/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:40:55,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:40:55,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:40:55,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:40:55,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:40:55,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:40:55,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:40:55,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:40:55,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:40:55,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:40:55,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:40:55,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:40:55,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:40:55,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:40:55,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:40:55,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:40:55,810 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:40:55,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:40:55,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:40:55,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:40:55,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:40:55,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:40:55,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:40:55,813 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:40:55,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:40:55,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:40:55,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:40:56,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:40:56,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:40:56,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:40:56,015 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:40:56,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-03-03 17:40:56,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b170049b/ce44b06fee7a42899d68454827381a21/FLAG63e1e3df0 [2022-03-03 17:40:56,459 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:40:56,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-03-03 17:40:56,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b170049b/ce44b06fee7a42899d68454827381a21/FLAG63e1e3df0 [2022-03-03 17:40:56,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b170049b/ce44b06fee7a42899d68454827381a21 [2022-03-03 17:40:56,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:40:56,487 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:40:56,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:40:56,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:40:56,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:40:56,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fba38da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56, skipping insertion in model container [2022-03-03 17:40:56,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:40:56,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:40:56,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2022-03-03 17:40:56,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:40:56,663 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:40:56,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2022-03-03 17:40:56,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:40:56,701 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:40:56,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56 WrapperNode [2022-03-03 17:40:56,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:40:56,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:40:56,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:40:56,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:40:56,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,753 INFO L137 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 154 [2022-03-03 17:40:56,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:40:56,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:40:56,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:40:56,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:40:56,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:40:56,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:40:56,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:40:56,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:40:56,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (1/1) ... [2022-03-03 17:40:56,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:40:56,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:56,832 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) [2022-03-03 17:40:56,850 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 [2022-03-03 17:40:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:40:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:40:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:40:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:40:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:40:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:40:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:40:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:40:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:40:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:40:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-03 17:40:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:40:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:40:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:40:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:40:56,868 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:40:56,965 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:40:56,966 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:40:57,206 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:40:57,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:40:57,293 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-03 17:40:57,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:40:57 BoogieIcfgContainer [2022-03-03 17:40:57,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:40:57,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:40:57,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:40:57,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:40:57,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:40:56" (1/3) ... [2022-03-03 17:40:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d4a0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:40:57, skipping insertion in model container [2022-03-03 17:40:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:40:56" (2/3) ... [2022-03-03 17:40:57,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d4a0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:40:57, skipping insertion in model container [2022-03-03 17:40:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:40:57" (3/3) ... [2022-03-03 17:40:57,311 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2022-03-03 17:40:57,314 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:40:57,314 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:40:57,314 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:40:57,315 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:40:57,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:40:57,383 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:40:57,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:40:57,417 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:40:57,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:40:57,424 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 136 transitions, 288 flow [2022-03-03 17:40:57,489 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-03 17:40:57,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:57,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:57,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash -90218077, now seen corresponding path program 1 times [2022-03-03 17:40:57,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:57,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226443862] [2022-03-03 17:40:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:57,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:57,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:57,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226443862] [2022-03-03 17:40:57,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226443862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:40:57,708 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:40:57,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:40:57,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906281741] [2022-03-03 17:40:57,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:40:57,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:40:57,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:40:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:40:57,739 INFO L87 Difference]: Start difference. First operand has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 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) [2022-03-03 17:40:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:57,786 INFO L93 Difference]: Finished difference Result 490 states and 1135 transitions. [2022-03-03 17:40:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:40:57,787 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 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 97 [2022-03-03 17:40:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:57,817 INFO L225 Difference]: With dead ends: 490 [2022-03-03 17:40:57,818 INFO L226 Difference]: Without dead ends: 486 [2022-03-03 17:40:57,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:40:57,821 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:57,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:40:57,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-03-03 17:40:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-03-03 17:40:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 2.331958762886598) internal successors, (1131), 485 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1131 transitions. [2022-03-03 17:40:57,877 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1131 transitions. Word has length 97 [2022-03-03 17:40:57,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:57,878 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1131 transitions. [2022-03-03 17:40:57,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 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) [2022-03-03 17:40:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1131 transitions. [2022-03-03 17:40:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:40:57,885 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:57,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:57,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:40:57,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash 751312825, now seen corresponding path program 1 times [2022-03-03 17:40:57,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:57,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184315238] [2022-03-03 17:40:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:58,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:58,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184315238] [2022-03-03 17:40:58,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184315238] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:40:58,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:40:58,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:40:58,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80905920] [2022-03-03 17:40:58,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:40:58,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:40:58,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:40:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:40:58,076 INFO L87 Difference]: Start difference. First operand 486 states and 1131 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2022-03-03 17:40:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:58,150 INFO L93 Difference]: Finished difference Result 579 states and 1299 transitions. [2022-03-03 17:40:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:40:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 100 [2022-03-03 17:40:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:58,153 INFO L225 Difference]: With dead ends: 579 [2022-03-03 17:40:58,153 INFO L226 Difference]: Without dead ends: 492 [2022-03-03 17:40:58,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:40:58,155 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 226 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:58,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 333 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:40:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-03-03 17:40:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 487. [2022-03-03 17:40:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 2.3292181069958846) internal successors, (1132), 486 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1132 transitions. [2022-03-03 17:40:58,172 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1132 transitions. Word has length 100 [2022-03-03 17:40:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:58,173 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 1132 transitions. [2022-03-03 17:40:58,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2022-03-03 17:40:58,173 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1132 transitions. [2022-03-03 17:40:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-03 17:40:58,175 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:58,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:58,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:40:58,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:58,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:58,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2074297026, now seen corresponding path program 1 times [2022-03-03 17:40:58,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:58,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794134089] [2022-03-03 17:40:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:58,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:58,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:58,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794134089] [2022-03-03 17:40:58,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794134089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:40:58,259 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:40:58,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:40:58,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132884790] [2022-03-03 17:40:58,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:40:58,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:40:58,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:58,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:40:58,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:40:58,260 INFO L87 Difference]: Start difference. First operand 487 states and 1132 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:58,281 INFO L93 Difference]: Finished difference Result 521 states and 1214 transitions. [2022-03-03 17:40:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:40:58,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-03-03 17:40:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:58,284 INFO L225 Difference]: With dead ends: 521 [2022-03-03 17:40:58,284 INFO L226 Difference]: Without dead ends: 521 [2022-03-03 17:40:58,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:40:58,285 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:58,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 164 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:40:58,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-03-03 17:40:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-03-03 17:40:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3346153846153848) internal successors, (1214), 520 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1214 transitions. [2022-03-03 17:40:58,306 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1214 transitions. Word has length 107 [2022-03-03 17:40:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:58,306 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1214 transitions. [2022-03-03 17:40:58,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1214 transitions. [2022-03-03 17:40:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-03 17:40:58,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:58,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:58,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:40:58,309 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:58,309 INFO L85 PathProgramCache]: Analyzing trace with hash -940192228, now seen corresponding path program 2 times [2022-03-03 17:40:58,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:58,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222427578] [2022-03-03 17:40:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:58,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:58,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:58,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222427578] [2022-03-03 17:40:58,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222427578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:40:58,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:40:58,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-03 17:40:58,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613840998] [2022-03-03 17:40:58,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:40:58,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:40:58,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:58,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:40:58,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:40:58,518 INFO L87 Difference]: Start difference. First operand 521 states and 1214 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:58,674 INFO L93 Difference]: Finished difference Result 856 states and 2027 transitions. [2022-03-03 17:40:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:40:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-03-03 17:40:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:58,680 INFO L225 Difference]: With dead ends: 856 [2022-03-03 17:40:58,680 INFO L226 Difference]: Without dead ends: 805 [2022-03-03 17:40:58,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:40:58,689 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 171 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:58,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 661 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:40:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-03-03 17:40:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 614. [2022-03-03 17:40:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 2.3148450244698204) internal successors, (1419), 613 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1419 transitions. [2022-03-03 17:40:58,706 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1419 transitions. Word has length 107 [2022-03-03 17:40:58,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:58,707 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1419 transitions. [2022-03-03 17:40:58,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1419 transitions. [2022-03-03 17:40:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-03 17:40:58,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:58,711 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:58,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:40:58,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:58,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1596238760, now seen corresponding path program 1 times [2022-03-03 17:40:58,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:58,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430443936] [2022-03-03 17:40:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:58,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:58,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430443936] [2022-03-03 17:40:58,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430443936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:58,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840561803] [2022-03-03 17:40:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:58,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:58,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:58,796 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) [2022-03-03 17:40:58,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:40:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:58,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:40:58,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:40:59,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:40:59,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840561803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:40:59,146 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:40:59,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-03-03 17:40:59,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242966017] [2022-03-03 17:40:59,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:40:59,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 17:40:59,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 17:40:59,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:40:59,150 INFO L87 Difference]: Start difference. First operand 614 states and 1419 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:59,187 INFO L93 Difference]: Finished difference Result 1238 states and 3016 transitions. [2022-03-03 17:40:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:40:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 111 [2022-03-03 17:40:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:59,191 INFO L225 Difference]: With dead ends: 1238 [2022-03-03 17:40:59,192 INFO L226 Difference]: Without dead ends: 1097 [2022-03-03 17:40:59,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:40:59,193 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 110 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:59,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 237 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:40:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-03-03 17:40:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 837. [2022-03-03 17:40:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.5047846889952154) internal successors, (2094), 836 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2094 transitions. [2022-03-03 17:40:59,211 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2094 transitions. Word has length 111 [2022-03-03 17:40:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:59,211 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2094 transitions. [2022-03-03 17:40:59,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2094 transitions. [2022-03-03 17:40:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-03 17:40:59,215 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:59,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:59,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-03 17:40:59,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:59,432 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:59,433 INFO L85 PathProgramCache]: Analyzing trace with hash 891713281, now seen corresponding path program 1 times [2022-03-03 17:40:59,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:59,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447633210] [2022-03-03 17:40:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:59,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:59,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447633210] [2022-03-03 17:40:59,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447633210] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:59,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696721387] [2022-03-03 17:40:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:59,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:59,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:59,567 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) [2022-03-03 17:40:59,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:40:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:59,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:40:59,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:59,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:00,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696721387] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:00,233 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:00,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:41:00,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069366858] [2022-03-03 17:41:00,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:00,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:41:00,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:00,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:41:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:41:00,235 INFO L87 Difference]: Start difference. First operand 837 states and 2094 transitions. Second operand has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:00,405 INFO L93 Difference]: Finished difference Result 1194 states and 2907 transitions. [2022-03-03 17:41:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:41:00,406 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-03-03 17:41:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:00,409 INFO L225 Difference]: With dead ends: 1194 [2022-03-03 17:41:00,409 INFO L226 Difference]: Without dead ends: 849 [2022-03-03 17:41:00,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:41:00,409 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 395 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:00,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 930 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:41:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-03-03 17:41:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 844. [2022-03-03 17:41:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.4922894424673783) internal successors, (2101), 843 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2101 transitions. [2022-03-03 17:41:00,424 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2101 transitions. Word has length 112 [2022-03-03 17:41:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:00,424 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2101 transitions. [2022-03-03 17:41:00,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2101 transitions. [2022-03-03 17:41:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-03 17:41:00,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:00,426 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:00,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:00,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-03 17:41:00,643 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:00,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1610634378, now seen corresponding path program 2 times [2022-03-03 17:41:00,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:00,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163659184] [2022-03-03 17:41:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:01,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:01,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163659184] [2022-03-03 17:41:01,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163659184] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:01,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053762259] [2022-03-03 17:41:01,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:41:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:01,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:01,417 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) [2022-03-03 17:41:01,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:41:01,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:41:01,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:01,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:41:01,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:02,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:41:02,630 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 [2022-03-03 17:41:02,717 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 23 treesize of output 7 [2022-03-03 17:41:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:02,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:03,141 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:41:03,142 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 [2022-03-03 17:41:03,145 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 24 treesize of output 18 [2022-03-03 17:41:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:04,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053762259] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:04,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:04,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 21] total 61 [2022-03-03 17:41:04,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223309805] [2022-03-03 17:41:04,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:04,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:41:04,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:41:04,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3270, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:41:04,657 INFO L87 Difference]: Start difference. First operand 844 states and 2101 transitions. Second operand has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 61 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:07,098 INFO L93 Difference]: Finished difference Result 2577 states and 6519 transitions. [2022-03-03 17:41:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:41:07,098 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 61 states have internal predecessors, (291), 0 states have call successors, (0), 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 119 [2022-03-03 17:41:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:07,105 INFO L225 Difference]: With dead ends: 2577 [2022-03-03 17:41:07,105 INFO L226 Difference]: Without dead ends: 2051 [2022-03-03 17:41:07,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 206 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1361, Invalid=8145, Unknown=0, NotChecked=0, Total=9506 [2022-03-03 17:41:07,107 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 2349 mSDsluCounter, 4251 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:07,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 4129 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1776 Invalid, 0 Unknown, 146 Unchecked, 0.8s Time] [2022-03-03 17:41:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-03-03 17:41:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1455. [2022-03-03 17:41:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 2.5536451169188448) internal successors, (3713), 1454 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 3713 transitions. [2022-03-03 17:41:07,136 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 3713 transitions. Word has length 119 [2022-03-03 17:41:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:07,137 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 3713 transitions. [2022-03-03 17:41:07,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 61 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 3713 transitions. [2022-03-03 17:41:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-03 17:41:07,139 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:07,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:07,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:07,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:07,357 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:07,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1403854876, now seen corresponding path program 3 times [2022-03-03 17:41:07,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:07,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637009215] [2022-03-03 17:41:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:07,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:08,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:08,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637009215] [2022-03-03 17:41:08,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637009215] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:08,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379608661] [2022-03-03 17:41:08,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:41:08,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:08,098 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) [2022-03-03 17:41:08,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:41:08,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:41:08,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:08,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:41:08,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:08,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:41:08,627 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 [2022-03-03 17:41:08,674 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 [2022-03-03 17:41:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:41:08,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:08,774 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_150 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_150) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 0))) is different from false [2022-03-03 17:41:08,814 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:41:08,814 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 [2022-03-03 17:41:08,817 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 24 treesize of output 18 [2022-03-03 17:41:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-03-03 17:41:09,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379608661] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:09,256 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:09,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 43 [2022-03-03 17:41:09,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565896310] [2022-03-03 17:41:09,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:09,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 17:41:09,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:09,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 17:41:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1614, Unknown=1, NotChecked=80, Total=1806 [2022-03-03 17:41:09,258 INFO L87 Difference]: Start difference. First operand 1455 states and 3713 transitions. Second operand has 43 states, 43 states have (on average 6.534883720930233) internal successors, (281), 43 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:11,426 INFO L93 Difference]: Finished difference Result 2095 states and 5291 transitions. [2022-03-03 17:41:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:41:11,426 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.534883720930233) internal successors, (281), 43 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-03-03 17:41:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:11,433 INFO L225 Difference]: With dead ends: 2095 [2022-03-03 17:41:11,433 INFO L226 Difference]: Without dead ends: 2095 [2022-03-03 17:41:11,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=769, Invalid=5086, Unknown=1, NotChecked=150, Total=6006 [2022-03-03 17:41:11,435 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 1345 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:11,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 3449 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1518 Invalid, 0 Unknown, 192 Unchecked, 0.6s Time] [2022-03-03 17:41:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2022-03-03 17:41:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1394. [2022-03-03 17:41:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 2.5233309404163675) internal successors, (3515), 1393 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3515 transitions. [2022-03-03 17:41:11,461 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3515 transitions. Word has length 119 [2022-03-03 17:41:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:11,462 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 3515 transitions. [2022-03-03 17:41:11,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.534883720930233) internal successors, (281), 43 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3515 transitions. [2022-03-03 17:41:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:41:11,464 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:11,464 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:11,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:11,681 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 [2022-03-03 17:41:11,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:11,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash -871935768, now seen corresponding path program 1 times [2022-03-03 17:41:11,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:11,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945446216] [2022-03-03 17:41:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:11,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:12,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:12,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945446216] [2022-03-03 17:41:12,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945446216] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:12,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119542711] [2022-03-03 17:41:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:12,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:12,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:12,846 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) [2022-03-03 17:41:12,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:41:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:12,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-03 17:41:12,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:12,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:41:13,192 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:41:13,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:41:14,457 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 [2022-03-03 17:41:14,645 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-03-03 17:41:14,646 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 24 treesize of output 10 [2022-03-03 17:41:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:14,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:15,649 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:41:15,649 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 111 treesize of output 95 [2022-03-03 17:41:15,670 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 67 treesize of output 49 [2022-03-03 17:41:17,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:41:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:17,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119542711] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:17,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:17,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-03-03 17:41:17,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710028959] [2022-03-03 17:41:17,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:17,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-03 17:41:17,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-03 17:41:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=6411, Unknown=5, NotChecked=0, Total=6972 [2022-03-03 17:41:17,789 INFO L87 Difference]: Start difference. First operand 1394 states and 3515 transitions. Second operand has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:21,487 INFO L93 Difference]: Finished difference Result 2175 states and 5407 transitions. [2022-03-03 17:41:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:41:21,488 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 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 123 [2022-03-03 17:41:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:21,494 INFO L225 Difference]: With dead ends: 2175 [2022-03-03 17:41:21,494 INFO L226 Difference]: Without dead ends: 1918 [2022-03-03 17:41:21,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5203 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1473, Invalid=15290, Unknown=7, NotChecked=0, Total=16770 [2022-03-03 17:41:21,497 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1640 mSDsluCounter, 6598 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1358 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:21,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 6177 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1720 Invalid, 0 Unknown, 1358 Unchecked, 0.7s Time] [2022-03-03 17:41:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2022-03-03 17:41:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1489. [2022-03-03 17:41:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 2.5268817204301075) internal successors, (3760), 1488 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 3760 transitions. [2022-03-03 17:41:21,522 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 3760 transitions. Word has length 123 [2022-03-03 17:41:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:21,522 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 3760 transitions. [2022-03-03 17:41:21,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 3760 transitions. [2022-03-03 17:41:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:41:21,525 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:21,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:21,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-03 17:41:21,739 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 [2022-03-03 17:41:21,739 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:21,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash 365129222, now seen corresponding path program 2 times [2022-03-03 17:41:21,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:21,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950838804] [2022-03-03 17:41:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:21,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:22,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:22,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950838804] [2022-03-03 17:41:22,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950838804] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:22,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672268625] [2022-03-03 17:41:22,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:41:22,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:22,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:22,684 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) [2022-03-03 17:41:22,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:41:22,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:41:22,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:22,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 17:41:22,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:23,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:41:23,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:41:23,998 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 25 treesize of output 7 [2022-03-03 17:41:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:24,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:24,913 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:41:24,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 74 [2022-03-03 17:41:24,916 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 53 treesize of output 47 [2022-03-03 17:41:24,919 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 47 treesize of output 41 [2022-03-03 17:41:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:26,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672268625] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:26,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:26,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 31] total 84 [2022-03-03 17:41:26,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788185000] [2022-03-03 17:41:26,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:26,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-03 17:41:26,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-03 17:41:26,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=6532, Unknown=25, NotChecked=0, Total=6972 [2022-03-03 17:41:26,858 INFO L87 Difference]: Start difference. First operand 1489 states and 3760 transitions. Second operand has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:37,041 INFO L93 Difference]: Finished difference Result 2922 states and 7146 transitions. [2022-03-03 17:41:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-03 17:41:37,042 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 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 123 [2022-03-03 17:41:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:37,057 INFO L225 Difference]: With dead ends: 2922 [2022-03-03 17:41:37,057 INFO L226 Difference]: Without dead ends: 2467 [2022-03-03 17:41:37,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2495, Invalid=24201, Unknown=36, NotChecked=0, Total=26732 [2022-03-03 17:41:37,062 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 3703 mSDsluCounter, 8620 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 7911 SdHoareTripleChecker+Invalid, 5072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1286 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:37,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3703 Valid, 7911 Invalid, 5072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 3535 Invalid, 0 Unknown, 1286 Unchecked, 1.5s Time] [2022-03-03 17:41:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-03-03 17:41:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 1664. [2022-03-03 17:41:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1663 states have (on average 2.4726398075766687) internal successors, (4112), 1663 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 4112 transitions. [2022-03-03 17:41:37,090 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 4112 transitions. Word has length 123 [2022-03-03 17:41:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:37,090 INFO L470 AbstractCegarLoop]: Abstraction has 1664 states and 4112 transitions. [2022-03-03 17:41:37,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 4112 transitions. [2022-03-03 17:41:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:41:37,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:37,094 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:37,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:37,323 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 [2022-03-03 17:41:37,323 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash -854331734, now seen corresponding path program 3 times [2022-03-03 17:41:37,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:37,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859026590] [2022-03-03 17:41:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:38,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:38,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859026590] [2022-03-03 17:41:38,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859026590] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:38,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601522497] [2022-03-03 17:41:38,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:41:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:38,623 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) [2022-03-03 17:41:38,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:41:38,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:41:38,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:38,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:41:38,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:38,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:41:38,924 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:41:38,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:41:39,582 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 [2022-03-03 17:41:39,666 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 [2022-03-03 17:41:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:41:39,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:40,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:41:40,599 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 111 treesize of output 95 [2022-03-03 17:41:40,601 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 67 treesize of output 49 [2022-03-03 17:41:41,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:41:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:41:41,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601522497] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:41,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:41,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 23, 23] total 67 [2022-03-03 17:41:41,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024485917] [2022-03-03 17:41:41,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:41,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-03-03 17:41:41,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-03-03 17:41:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=4170, Unknown=6, NotChecked=0, Total=4422 [2022-03-03 17:41:41,437 INFO L87 Difference]: Start difference. First operand 1664 states and 4112 transitions. Second operand has 67 states, 67 states have (on average 4.119402985074627) internal successors, (276), 67 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) [2022-03-03 17:41:49,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:49,655 INFO L93 Difference]: Finished difference Result 3827 states and 9429 transitions. [2022-03-03 17:41:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-03 17:41:49,655 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.119402985074627) internal successors, (276), 67 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) Word has length 123 [2022-03-03 17:41:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:49,665 INFO L225 Difference]: With dead ends: 3827 [2022-03-03 17:41:49,666 INFO L226 Difference]: Without dead ends: 3431 [2022-03-03 17:41:49,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 219 SyntacticMatches, 7 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7229 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1937, Invalid=22859, Unknown=10, NotChecked=0, Total=24806 [2022-03-03 17:41:49,668 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 3102 mSDsluCounter, 7902 mSDsCounter, 0 mSdLazyCounter, 4757 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 7340 SdHoareTripleChecker+Invalid, 5961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 4757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 913 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:49,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3102 Valid, 7340 Invalid, 5961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 4757 Invalid, 0 Unknown, 913 Unchecked, 2.1s Time] [2022-03-03 17:41:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-03-03 17:41:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 1704. [2022-03-03 17:41:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 2.4721080446271286) internal successors, (4210), 1703 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 4210 transitions. [2022-03-03 17:41:49,698 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 4210 transitions. Word has length 123 [2022-03-03 17:41:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:49,699 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 4210 transitions. [2022-03-03 17:41:49,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.119402985074627) internal successors, (276), 67 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) [2022-03-03 17:41:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 4210 transitions. [2022-03-03 17:41:49,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:41:49,702 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:49,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:49,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:49,915 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 [2022-03-03 17:41:49,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1340828470, now seen corresponding path program 4 times [2022-03-03 17:41:49,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:49,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187978827] [2022-03-03 17:41:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:49,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:51,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:51,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187978827] [2022-03-03 17:41:51,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187978827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:51,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017065680] [2022-03-03 17:41:51,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:41:51,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:51,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:51,239 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) [2022-03-03 17:41:51,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:41:51,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:41:51,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:51,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 63 conjunts are in the unsatisfiable core [2022-03-03 17:41:51,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:52,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:41:52,508 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 [2022-03-03 17:41:52,602 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 25 treesize of output 7 [2022-03-03 17:41:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:52,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:53,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:41:53,468 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 111 treesize of output 95 [2022-03-03 17:41:53,471 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 67 treesize of output 49 [2022-03-03 17:41:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:55,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017065680] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:55,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:55,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36, 35] total 95 [2022-03-03 17:41:55,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941938991] [2022-03-03 17:41:55,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:55,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-03-03 17:41:55,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:55,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-03-03 17:41:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=8293, Unknown=4, NotChecked=0, Total=8930 [2022-03-03 17:41:55,458 INFO L87 Difference]: Start difference. First operand 1704 states and 4210 transitions. Second operand has 95 states, 95 states have (on average 3.3263157894736843) internal successors, (316), 95 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:10,244 INFO L93 Difference]: Finished difference Result 4357 states and 10954 transitions. [2022-03-03 17:42:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-03-03 17:42:10,244 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.3263157894736843) internal successors, (316), 95 states have internal predecessors, (316), 0 states have call successors, (0), 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 123 [2022-03-03 17:42:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:10,256 INFO L225 Difference]: With dead ends: 4357 [2022-03-03 17:42:10,256 INFO L226 Difference]: Without dead ends: 4001 [2022-03-03 17:42:10,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15135 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=4776, Invalid=41225, Unknown=9, NotChecked=0, Total=46010 [2022-03-03 17:42:10,259 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 5560 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 5450 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5560 SdHoareTripleChecker+Valid, 8549 SdHoareTripleChecker+Invalid, 7560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 5450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1346 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:10,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5560 Valid, 8549 Invalid, 7560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 5450 Invalid, 0 Unknown, 1346 Unchecked, 2.3s Time] [2022-03-03 17:42:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-03-03 17:42:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 1791. [2022-03-03 17:42:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1790 states have (on average 2.48268156424581) internal successors, (4444), 1790 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 4444 transitions. [2022-03-03 17:42:10,293 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 4444 transitions. Word has length 123 [2022-03-03 17:42:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:10,293 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 4444 transitions. [2022-03-03 17:42:10,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.3263157894736843) internal successors, (316), 95 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 4444 transitions. [2022-03-03 17:42:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:42:10,297 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:10,297 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:10,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-03 17:42:10,513 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 [2022-03-03 17:42:10,513 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:10,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1076103478, now seen corresponding path program 5 times [2022-03-03 17:42:10,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:10,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144708236] [2022-03-03 17:42:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:11,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:11,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144708236] [2022-03-03 17:42:11,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144708236] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:11,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546653018] [2022-03-03 17:42:11,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:42:11,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:11,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:11,541 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) [2022-03-03 17:42:11,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:42:11,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:42:11,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:11,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-03 17:42:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:11,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:42:11,855 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:42:11,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:42:12,598 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 [2022-03-03 17:42:12,784 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:42:12,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:42:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:42:12,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:13,454 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:42:13,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 74 [2022-03-03 17:42:13,457 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 53 treesize of output 47 [2022-03-03 17:42:13,460 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 47 treesize of output 41 [2022-03-03 17:42:14,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:42:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:42:14,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546653018] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:14,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:14,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 61 [2022-03-03 17:42:14,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548683655] [2022-03-03 17:42:14,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:14,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:42:14,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:14,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:42:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3450, Unknown=2, NotChecked=0, Total=3660 [2022-03-03 17:42:14,322 INFO L87 Difference]: Start difference. First operand 1791 states and 4444 transitions. Second operand has 61 states, 61 states have (on average 4.327868852459017) internal successors, (264), 61 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:16,568 INFO L93 Difference]: Finished difference Result 2502 states and 6221 transitions. [2022-03-03 17:42:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:42:16,569 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.327868852459017) internal successors, (264), 61 states have internal predecessors, (264), 0 states have call successors, (0), 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 123 [2022-03-03 17:42:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:16,578 INFO L225 Difference]: With dead ends: 2502 [2022-03-03 17:42:16,578 INFO L226 Difference]: Without dead ends: 2303 [2022-03-03 17:42:16,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2609 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=846, Invalid=9252, Unknown=2, NotChecked=0, Total=10100 [2022-03-03 17:42:16,583 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1289 mSDsluCounter, 6209 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 5954 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 745 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:16,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 5954 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1679 Invalid, 0 Unknown, 745 Unchecked, 0.6s Time] [2022-03-03 17:42:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2022-03-03 17:42:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1857. [2022-03-03 17:42:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 2.4967672413793105) internal successors, (4634), 1856 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 4634 transitions. [2022-03-03 17:42:16,654 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 4634 transitions. Word has length 123 [2022-03-03 17:42:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:16,654 INFO L470 AbstractCegarLoop]: Abstraction has 1857 states and 4634 transitions. [2022-03-03 17:42:16,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.327868852459017) internal successors, (264), 61 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 4634 transitions. [2022-03-03 17:42:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:42:16,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:16,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:16,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:16,879 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 [2022-03-03 17:42:16,880 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1294464682, now seen corresponding path program 6 times [2022-03-03 17:42:16,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:16,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954075595] [2022-03-03 17:42:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:17,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:17,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954075595] [2022-03-03 17:42:17,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954075595] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:17,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788236003] [2022-03-03 17:42:17,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:42:17,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:17,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:17,840 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) [2022-03-03 17:42:17,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:42:17,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:42:17,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:17,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-03 17:42:17,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:17,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:42:18,218 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:42:18,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:42:18,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:42:18,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:42:18,736 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 [2022-03-03 17:42:18,986 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 [2022-03-03 17:42:19,074 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 [2022-03-03 17:42:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:19,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:19,701 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (and (forall ((v_ArrVal_333 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_333 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)))) is different from false [2022-03-03 17:42:19,715 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (< c_~q_back~0 0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_back~0 1)) (and (forall ((v_ArrVal_333 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_333 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)))) is different from false [2022-03-03 17:42:19,729 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (and (forall ((v_ArrVal_333 (Array Int Int))) (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_333 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1)))) (< c_~q_back~0 0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:42:19,738 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_333 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) 1)) (forall ((v_ArrVal_333 (Array Int Int))) (<= 1 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (< c_~q_back~0 0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:42:21,162 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-03-03 17:42:21,162 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 2 case distinctions, treesize of input 112 treesize of output 88 [2022-03-03 17:42:21,186 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:42:21,187 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 305 treesize of output 353 [2022-03-03 17:42:21,196 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:42:21,196 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 353 treesize of output 345 [2022-03-03 17:42:21,206 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 197 treesize of output 185 [2022-03-03 17:42:21,212 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 185 treesize of output 161 [2022-03-03 17:42:24,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:42:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-03 17:42:24,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788236003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:24,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:24,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 34] total 89 [2022-03-03 17:42:24,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081491653] [2022-03-03 17:42:24,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:24,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-03 17:42:24,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:24,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-03 17:42:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=6538, Unknown=60, NotChecked=676, Total=7832 [2022-03-03 17:42:24,076 INFO L87 Difference]: Start difference. First operand 1857 states and 4634 transitions. Second operand has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:37,917 INFO L93 Difference]: Finished difference Result 3181 states and 7939 transitions. [2022-03-03 17:42:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-03 17:42:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 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 123 [2022-03-03 17:42:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:37,923 INFO L225 Difference]: With dead ends: 3181 [2022-03-03 17:42:37,923 INFO L226 Difference]: Without dead ends: 2892 [2022-03-03 17:42:37,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 204 SyntacticMatches, 27 SemanticMatches, 156 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 8497 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=2383, Invalid=21079, Unknown=116, NotChecked=1228, Total=24806 [2022-03-03 17:42:37,925 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 2219 mSDsluCounter, 6059 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 5781 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2407 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:37,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 5781 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2418 Invalid, 0 Unknown, 2407 Unchecked, 1.1s Time] [2022-03-03 17:42:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2022-03-03 17:42:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2000. [2022-03-03 17:42:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.481240620310155) internal successors, (4960), 1999 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 4960 transitions. [2022-03-03 17:42:37,962 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 4960 transitions. Word has length 123 [2022-03-03 17:42:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:37,962 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 4960 transitions. [2022-03-03 17:42:37,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 4960 transitions. [2022-03-03 17:42:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:42:37,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:37,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:37,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:38,183 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 [2022-03-03 17:42:38,183 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash 581984166, now seen corresponding path program 7 times [2022-03-03 17:42:38,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:38,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576997734] [2022-03-03 17:42:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:38,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:39,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:39,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576997734] [2022-03-03 17:42:39,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576997734] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:39,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105965065] [2022-03-03 17:42:39,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:42:39,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:39,127 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) [2022-03-03 17:42:39,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:42:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:39,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-03 17:42:39,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:39,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:42:39,523 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:42:39,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:42:40,459 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 [2022-03-03 17:42:40,631 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-03-03 17:42:40,631 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 24 treesize of output 10 [2022-03-03 17:42:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:41,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:41,584 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:42:41,584 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 111 treesize of output 95 [2022-03-03 17:42:41,587 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 67 treesize of output 49 [2022-03-03 17:42:43,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:42:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:43,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105965065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:43,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:43,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-03-03 17:42:43,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887224921] [2022-03-03 17:42:43,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:43,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-03 17:42:43,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-03 17:42:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=6427, Unknown=4, NotChecked=0, Total=6972 [2022-03-03 17:42:43,173 INFO L87 Difference]: Start difference. First operand 2000 states and 4960 transitions. Second operand has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:48,820 INFO L93 Difference]: Finished difference Result 3455 states and 8490 transitions. [2022-03-03 17:42:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:42:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 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 123 [2022-03-03 17:42:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:48,832 INFO L225 Difference]: With dead ends: 3455 [2022-03-03 17:42:48,832 INFO L226 Difference]: Without dead ends: 3106 [2022-03-03 17:42:48,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 198 SyntacticMatches, 20 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7541 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2235, Invalid=20108, Unknown=7, NotChecked=0, Total=22350 [2022-03-03 17:42:48,834 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 2383 mSDsluCounter, 8132 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 7772 SdHoareTripleChecker+Invalid, 4387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 894 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:48,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2383 Valid, 7772 Invalid, 4387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3317 Invalid, 0 Unknown, 894 Unchecked, 1.2s Time] [2022-03-03 17:42:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-03-03 17:42:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 2033. [2022-03-03 17:42:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 2.4891732283464565) internal successors, (5058), 2032 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 5058 transitions. [2022-03-03 17:42:48,865 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 5058 transitions. Word has length 123 [2022-03-03 17:42:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:48,866 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 5058 transitions. [2022-03-03 17:42:48,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 5058 transitions. [2022-03-03 17:42:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:42:48,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:48,869 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:48,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:49,086 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 [2022-03-03 17:42:49,086 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash 807967946, now seen corresponding path program 8 times [2022-03-03 17:42:49,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:49,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447008205] [2022-03-03 17:42:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:49,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:49,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447008205] [2022-03-03 17:42:49,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447008205] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:49,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489972781] [2022-03-03 17:42:49,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:42:49,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:49,968 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) [2022-03-03 17:42:49,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:42:50,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:42:50,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:50,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-03 17:42:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:50,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:42:50,321 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:42:50,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:42:50,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:42:50,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:42:51,099 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 [2022-03-03 17:42:51,485 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 [2022-03-03 17:42:51,581 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 [2022-03-03 17:42:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:51,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:55,844 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-03-03 17:42:55,844 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 2 case distinctions, treesize of input 148 treesize of output 105 [2022-03-03 17:42:55,860 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:42:55,860 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 274 treesize of output 282 [2022-03-03 17:42:55,872 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:42:55,872 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 194 treesize of output 186 [2022-03-03 17:42:55,880 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 179 treesize of output 143 [2022-03-03 17:42:57,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:42:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:57,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489972781] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:57,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:57,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 35] total 91 [2022-03-03 17:42:57,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113321601] [2022-03-03 17:42:57,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:57,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-03-03 17:42:57,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:57,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-03-03 17:42:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=7471, Unknown=86, NotChecked=0, Total=8190 [2022-03-03 17:42:57,790 INFO L87 Difference]: Start difference. First operand 2033 states and 5058 transitions. Second operand has 91 states, 91 states have (on average 3.4725274725274726) internal successors, (316), 91 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:03,242 INFO L93 Difference]: Finished difference Result 2999 states and 7384 transitions. [2022-03-03 17:43:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 17:43:03,242 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.4725274725274726) internal successors, (316), 91 states have internal predecessors, (316), 0 states have call successors, (0), 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 123 [2022-03-03 17:43:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:03,247 INFO L225 Difference]: With dead ends: 2999 [2022-03-03 17:43:03,247 INFO L226 Difference]: Without dead ends: 2670 [2022-03-03 17:43:03,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7355 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2212, Invalid=20624, Unknown=116, NotChecked=0, Total=22952 [2022-03-03 17:43:03,249 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 2143 mSDsluCounter, 6307 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 6021 SdHoareTripleChecker+Invalid, 4279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1872 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:03,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2143 Valid, 6021 Invalid, 4279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2290 Invalid, 0 Unknown, 1872 Unchecked, 0.8s Time] [2022-03-03 17:43:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-03-03 17:43:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2031. [2022-03-03 17:43:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2030 states have (on average 2.4911330049261085) internal successors, (5057), 2030 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 5057 transitions. [2022-03-03 17:43:03,278 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 5057 transitions. Word has length 123 [2022-03-03 17:43:03,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:03,278 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 5057 transitions. [2022-03-03 17:43:03,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.4725274725274726) internal successors, (316), 91 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 5057 transitions. [2022-03-03 17:43:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:43:03,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:03,281 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:03,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-03 17:43:03,497 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 [2022-03-03 17:43:03,497 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:03,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash 2045032936, now seen corresponding path program 9 times [2022-03-03 17:43:03,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:03,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780568516] [2022-03-03 17:43:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:03,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:04,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:04,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780568516] [2022-03-03 17:43:04,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780568516] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:04,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657815727] [2022-03-03 17:43:04,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:43:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:04,276 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) [2022-03-03 17:43:04,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:43:04,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:43:04,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:04,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-03 17:43:04,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:04,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:43:04,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:43:05,047 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 [2022-03-03 17:43:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:43:05,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:05,822 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:05,822 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 111 treesize of output 95 [2022-03-03 17:43:05,824 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 67 treesize of output 49 [2022-03-03 17:43:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:43:06,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657815727] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:06,561 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:06,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 23, 23] total 68 [2022-03-03 17:43:06,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005437872] [2022-03-03 17:43:06,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:06,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-03-03 17:43:06,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-03-03 17:43:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4297, Unknown=3, NotChecked=0, Total=4556 [2022-03-03 17:43:06,563 INFO L87 Difference]: Start difference. First operand 2031 states and 5057 transitions. Second operand has 68 states, 68 states have (on average 4.426470588235294) internal successors, (301), 68 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:10,158 INFO L93 Difference]: Finished difference Result 2813 states and 7066 transitions. [2022-03-03 17:43:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:43:10,158 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.426470588235294) internal successors, (301), 68 states have internal predecessors, (301), 0 states have call successors, (0), 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 123 [2022-03-03 17:43:10,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:10,182 INFO L225 Difference]: With dead ends: 2813 [2022-03-03 17:43:10,182 INFO L226 Difference]: Without dead ends: 2561 [2022-03-03 17:43:10,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3882 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1386, Invalid=14361, Unknown=3, NotChecked=0, Total=15750 [2022-03-03 17:43:10,185 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 1916 mSDsluCounter, 4781 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:10,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1916 Valid, 4567 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2482 Invalid, 0 Unknown, 288 Unchecked, 0.9s Time] [2022-03-03 17:43:10,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-03-03 17:43:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2045. [2022-03-03 17:43:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2044 states have (on average 2.488747553816047) internal successors, (5087), 2044 states have internal predecessors, (5087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 5087 transitions. [2022-03-03 17:43:10,220 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 5087 transitions. Word has length 123 [2022-03-03 17:43:10,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:10,221 INFO L470 AbstractCegarLoop]: Abstraction has 2045 states and 5087 transitions. [2022-03-03 17:43:10,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.426470588235294) internal successors, (301), 68 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 5087 transitions. [2022-03-03 17:43:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:43:10,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:10,224 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:10,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:10,458 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 [2022-03-03 17:43:10,459 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 349498376, now seen corresponding path program 10 times [2022-03-03 17:43:10,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:10,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003004458] [2022-03-03 17:43:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:11,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:11,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003004458] [2022-03-03 17:43:11,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003004458] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:11,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367960930] [2022-03-03 17:43:11,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:43:11,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:11,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:11,393 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) [2022-03-03 17:43:11,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:43:11,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:43:11,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:11,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 63 conjunts are in the unsatisfiable core [2022-03-03 17:43:11,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:11,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:43:11,765 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:43:11,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:43:12,524 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 [2022-03-03 17:43:12,642 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-03-03 17:43:12,642 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 24 treesize of output 10 [2022-03-03 17:43:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:12,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:13,459 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:13,460 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 111 treesize of output 95 [2022-03-03 17:43:13,462 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 67 treesize of output 49 [2022-03-03 17:43:15,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:43:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:15,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367960930] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:15,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:15,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-03-03 17:43:15,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053791621] [2022-03-03 17:43:15,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:15,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-03 17:43:15,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:15,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-03 17:43:15,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=6415, Unknown=4, NotChecked=0, Total=6972 [2022-03-03 17:43:15,079 INFO L87 Difference]: Start difference. First operand 2045 states and 5087 transitions. Second operand has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:21,777 INFO L93 Difference]: Finished difference Result 3663 states and 9080 transitions. [2022-03-03 17:43:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-03 17:43:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 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 123 [2022-03-03 17:43:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:21,783 INFO L225 Difference]: With dead ends: 3663 [2022-03-03 17:43:21,783 INFO L226 Difference]: Without dead ends: 3254 [2022-03-03 17:43:21,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 202 SyntacticMatches, 18 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9526 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2340, Invalid=25037, Unknown=13, NotChecked=0, Total=27390 [2022-03-03 17:43:21,786 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 2414 mSDsluCounter, 8085 mSDsCounter, 0 mSdLazyCounter, 3660 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 7587 SdHoareTripleChecker+Invalid, 4954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 3660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1054 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:21,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2414 Valid, 7587 Invalid, 4954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 3660 Invalid, 0 Unknown, 1054 Unchecked, 1.3s Time] [2022-03-03 17:43:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2022-03-03 17:43:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 2144. [2022-03-03 17:43:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 2.4857676154923003) internal successors, (5327), 2143 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 5327 transitions. [2022-03-03 17:43:21,824 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 5327 transitions. Word has length 123 [2022-03-03 17:43:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:21,824 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 5327 transitions. [2022-03-03 17:43:21,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 5327 transitions. [2022-03-03 17:43:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:43:21,827 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:21,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:21,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:22,043 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 [2022-03-03 17:43:22,043 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:22,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 277255470, now seen corresponding path program 11 times [2022-03-03 17:43:22,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:22,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562311827] [2022-03-03 17:43:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:22,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:22,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562311827] [2022-03-03 17:43:22,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562311827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:22,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575734932] [2022-03-03 17:43:22,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:43:22,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:22,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:22,903 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) [2022-03-03 17:43:22,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:43:22,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:43:22,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:22,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-03 17:43:22,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:23,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:43:23,629 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 [2022-03-03 17:43:23,695 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 [2022-03-03 17:43:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:43:23,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:24,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:24,178 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 82 treesize of output 74 [2022-03-03 17:43:24,181 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 53 treesize of output 47 [2022-03-03 17:43:24,183 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 47 treesize of output 41 [2022-03-03 17:43:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:43:25,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575734932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:25,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:25,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22, 22] total 66 [2022-03-03 17:43:25,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327245983] [2022-03-03 17:43:25,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:25,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-03 17:43:25,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-03 17:43:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=4049, Unknown=4, NotChecked=0, Total=4290 [2022-03-03 17:43:25,124 INFO L87 Difference]: Start difference. First operand 2144 states and 5327 transitions. Second operand has 66 states, 66 states have (on average 4.5606060606060606) internal successors, (301), 66 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:30,131 INFO L93 Difference]: Finished difference Result 3117 states and 7802 transitions. [2022-03-03 17:43:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-03 17:43:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.5606060606060606) internal successors, (301), 66 states have internal predecessors, (301), 0 states have call successors, (0), 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 123 [2022-03-03 17:43:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:30,137 INFO L225 Difference]: With dead ends: 3117 [2022-03-03 17:43:30,137 INFO L226 Difference]: Without dead ends: 2802 [2022-03-03 17:43:30,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 210 SyntacticMatches, 5 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5975 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1673, Invalid=19492, Unknown=5, NotChecked=0, Total=21170 [2022-03-03 17:43:30,138 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1800 mSDsluCounter, 6246 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 5943 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1093 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:30,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 5943 Invalid, 3950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2707 Invalid, 0 Unknown, 1093 Unchecked, 1.1s Time] [2022-03-03 17:43:30,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2022-03-03 17:43:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1998. [2022-03-03 17:43:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1997 states have (on average 2.500751126690035) internal successors, (4994), 1997 states have internal predecessors, (4994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 4994 transitions. [2022-03-03 17:43:30,178 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 4994 transitions. Word has length 123 [2022-03-03 17:43:30,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:30,179 INFO L470 AbstractCegarLoop]: Abstraction has 1998 states and 4994 transitions. [2022-03-03 17:43:30,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.5606060606060606) internal successors, (301), 66 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:30,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 4994 transitions. [2022-03-03 17:43:30,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:43:30,181 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:30,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:30,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:30,398 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 [2022-03-03 17:43:30,398 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash 241992788, now seen corresponding path program 12 times [2022-03-03 17:43:30,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:30,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785683154] [2022-03-03 17:43:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:31,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:31,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785683154] [2022-03-03 17:43:31,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785683154] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:31,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149635114] [2022-03-03 17:43:31,291 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:43:31,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:31,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:31,292 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) [2022-03-03 17:43:31,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:43:31,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:43:31,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:31,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-03 17:43:31,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:32,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:43:32,645 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 [2022-03-03 17:43:32,924 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 25 treesize of output 7 [2022-03-03 17:43:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:33,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:33,877 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:33,877 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 111 treesize of output 95 [2022-03-03 17:43:33,880 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 67 treesize of output 49 [2022-03-03 17:43:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:35,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149635114] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:35,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:35,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 87 [2022-03-03 17:43:35,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213005552] [2022-03-03 17:43:35,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:35,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-03 17:43:35,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-03 17:43:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=7021, Unknown=2, NotChecked=0, Total=7482 [2022-03-03 17:43:35,307 INFO L87 Difference]: Start difference. First operand 1998 states and 4994 transitions. Second operand has 87 states, 87 states have (on average 3.6206896551724137) internal successors, (315), 87 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:43,389 INFO L93 Difference]: Finished difference Result 3553 states and 8794 transitions. [2022-03-03 17:43:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 17:43:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.6206896551724137) internal successors, (315), 87 states have internal predecessors, (315), 0 states have call successors, (0), 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 123 [2022-03-03 17:43:43,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:43,393 INFO L225 Difference]: With dead ends: 3553 [2022-03-03 17:43:43,394 INFO L226 Difference]: Without dead ends: 2952 [2022-03-03 17:43:43,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7193 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2604, Invalid=22514, Unknown=4, NotChecked=0, Total=25122 [2022-03-03 17:43:43,395 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 3123 mSDsluCounter, 10420 mSDsCounter, 0 mSdLazyCounter, 5651 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 9636 SdHoareTripleChecker+Invalid, 6442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:43,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3123 Valid, 9636 Invalid, 6442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 5651 Invalid, 0 Unknown, 457 Unchecked, 2.2s Time] [2022-03-03 17:43:43,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-03-03 17:43:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1906. [2022-03-03 17:43:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 2.4881889763779528) internal successors, (4740), 1905 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 4740 transitions. [2022-03-03 17:43:43,422 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 4740 transitions. Word has length 123 [2022-03-03 17:43:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:43,422 INFO L470 AbstractCegarLoop]: Abstraction has 1906 states and 4740 transitions. [2022-03-03 17:43:43,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.6206896551724137) internal successors, (315), 87 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 4740 transitions. [2022-03-03 17:43:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:43:43,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:43,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:43,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-03 17:43:43,641 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 [2022-03-03 17:43:43,642 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:43,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2101260580, now seen corresponding path program 13 times [2022-03-03 17:43:43,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:43,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280172334] [2022-03-03 17:43:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:44,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:44,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280172334] [2022-03-03 17:43:44,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280172334] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:44,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089751788] [2022-03-03 17:43:44,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:43:44,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:44,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:44,857 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) [2022-03-03 17:43:44,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:43:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:44,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-03 17:43:44,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:44,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:43:45,230 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:43:45,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:43:46,144 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 [2022-03-03 17:43:46,430 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 [2022-03-03 17:43:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:46,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:47,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:47,625 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 111 treesize of output 95 [2022-03-03 17:43:47,628 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 67 treesize of output 49 [2022-03-03 17:43:49,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:43:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:49,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089751788] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:49,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:49,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 86 [2022-03-03 17:43:49,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801215479] [2022-03-03 17:43:49,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:49,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-03-03 17:43:49,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-03-03 17:43:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=6789, Unknown=3, NotChecked=0, Total=7310 [2022-03-03 17:43:49,071 INFO L87 Difference]: Start difference. First operand 1906 states and 4740 transitions. Second operand has 86 states, 86 states have (on average 3.5697674418604652) internal successors, (307), 86 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:58,049 INFO L93 Difference]: Finished difference Result 3336 states and 8329 transitions. [2022-03-03 17:43:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-03 17:43:58,056 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.5697674418604652) internal successors, (307), 86 states have internal predecessors, (307), 0 states have call successors, (0), 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 123 [2022-03-03 17:43:58,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:58,060 INFO L225 Difference]: With dead ends: 3336 [2022-03-03 17:43:58,060 INFO L226 Difference]: Without dead ends: 2988 [2022-03-03 17:43:58,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 212 SyntacticMatches, 6 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7211 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=2936, Invalid=23466, Unknown=4, NotChecked=0, Total=26406 [2022-03-03 17:43:58,062 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 3438 mSDsluCounter, 7921 mSDsCounter, 0 mSdLazyCounter, 4263 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 7255 SdHoareTripleChecker+Invalid, 5441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 4263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 813 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:58,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3438 Valid, 7255 Invalid, 5441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 4263 Invalid, 0 Unknown, 813 Unchecked, 1.6s Time] [2022-03-03 17:43:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2022-03-03 17:43:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1858. [2022-03-03 17:43:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 2.496499730748519) internal successors, (4636), 1857 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 4636 transitions. [2022-03-03 17:43:58,085 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 4636 transitions. Word has length 123 [2022-03-03 17:43:58,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:58,085 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 4636 transitions. [2022-03-03 17:43:58,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.5697674418604652) internal successors, (307), 86 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:58,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 4636 transitions. [2022-03-03 17:43:58,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:43:58,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:58,089 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:58,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-03 17:43:58,303 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 [2022-03-03 17:43:58,304 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1483855266, now seen corresponding path program 14 times [2022-03-03 17:43:58,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:58,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006088968] [2022-03-03 17:43:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:59,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:59,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006088968] [2022-03-03 17:43:59,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006088968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:59,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474672683] [2022-03-03 17:43:59,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:43:59,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:59,583 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) [2022-03-03 17:43:59,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:43:59,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:43:59,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:59,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-03 17:43:59,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:59,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:44:00,073 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:44:00,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:44:00,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:44:00,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:44:00,571 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 [2022-03-03 17:44:00,771 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 [2022-03-03 17:44:00,868 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 25 treesize of output 7 [2022-03-03 17:44:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:01,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:01,772 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_580 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)) (forall ((v_ArrVal_580 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) (< c_~q_back~0 0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (<= c_~n~0 c_~q_back~0)) is different from false [2022-03-03 17:44:01,837 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (and (forall ((v_ArrVal_580 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)) (forall ((v_ArrVal_580 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) (< c_~q_back~0 0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:44:01,858 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (and (forall ((v_ArrVal_580 (Array Int Int))) (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_580 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1)))) (< c_~q_back~0 0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:44:01,872 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (and (forall ((v_ArrVal_580 (Array Int Int))) (<= 1 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_580 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_580) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) 1))) (< c_~q_back~0 0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:44:03,223 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-03-03 17:44:03,223 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 80 [2022-03-03 17:44:03,229 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:03,229 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 186 treesize of output 178 [2022-03-03 17:44:03,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:03,235 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 162 treesize of output 160 [2022-03-03 17:44:03,238 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 125 treesize of output 113 [2022-03-03 17:44:03,243 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 113 treesize of output 101 [2022-03-03 17:44:04,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:44:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-03 17:44:04,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474672683] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:04,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:04,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 34] total 90 [2022-03-03 17:44:04,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680777244] [2022-03-03 17:44:04,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:04,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-03 17:44:04,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-03 17:44:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=6733, Unknown=44, NotChecked=684, Total=8010 [2022-03-03 17:44:04,435 INFO L87 Difference]: Start difference. First operand 1858 states and 4636 transitions. Second operand has 90 states, 90 states have (on average 3.511111111111111) internal successors, (316), 90 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:10,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:10,452 INFO L93 Difference]: Finished difference Result 2801 states and 6932 transitions. [2022-03-03 17:44:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:44:10,460 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.511111111111111) internal successors, (316), 90 states have internal predecessors, (316), 0 states have call successors, (0), 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 123 [2022-03-03 17:44:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:10,464 INFO L225 Difference]: With dead ends: 2801 [2022-03-03 17:44:10,464 INFO L226 Difference]: Without dead ends: 2485 [2022-03-03 17:44:10,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 201 SyntacticMatches, 14 SemanticMatches, 142 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 5638 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2202, Invalid=17212, Unknown=62, NotChecked=1116, Total=20592 [2022-03-03 17:44:10,466 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2638 mSDsluCounter, 5953 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 5602 SdHoareTripleChecker+Invalid, 5193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2472 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:10,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2638 Valid, 5602 Invalid, 5193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2557 Invalid, 0 Unknown, 2472 Unchecked, 1.0s Time] [2022-03-03 17:44:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2022-03-03 17:44:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 1891. [2022-03-03 17:44:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 2.4952380952380953) internal successors, (4716), 1890 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 4716 transitions. [2022-03-03 17:44:10,490 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 4716 transitions. Word has length 123 [2022-03-03 17:44:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:10,490 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 4716 transitions. [2022-03-03 17:44:10,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.511111111111111) internal successors, (316), 90 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 4716 transitions. [2022-03-03 17:44:10,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:44:10,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:10,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:10,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:10,707 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 [2022-03-03 17:44:10,707 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1278814812, now seen corresponding path program 15 times [2022-03-03 17:44:10,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:10,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562951358] [2022-03-03 17:44:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:11,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:11,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562951358] [2022-03-03 17:44:11,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562951358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:11,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330738127] [2022-03-03 17:44:11,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:44:11,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:11,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:11,672 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) [2022-03-03 17:44:11,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:44:11,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:44:11,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:11,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 17:44:11,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:11,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:44:11,880 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:44:11,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:44:12,359 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 [2022-03-03 17:44:12,432 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 [2022-03-03 17:44:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:44:12,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:13,268 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:13,268 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 111 treesize of output 95 [2022-03-03 17:44:13,271 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 67 treesize of output 49 [2022-03-03 17:44:14,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:44:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:44:14,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330738127] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:14,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:14,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 23, 23] total 62 [2022-03-03 17:44:14,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624303997] [2022-03-03 17:44:14,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:14,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-03 17:44:14,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-03 17:44:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3544, Unknown=4, NotChecked=0, Total=3782 [2022-03-03 17:44:14,042 INFO L87 Difference]: Start difference. First operand 1891 states and 4716 transitions. Second operand has 62 states, 62 states have (on average 4.274193548387097) internal successors, (265), 62 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:16,975 INFO L93 Difference]: Finished difference Result 2837 states and 7111 transitions. [2022-03-03 17:44:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:44:16,976 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.274193548387097) internal successors, (265), 62 states have internal predecessors, (265), 0 states have call successors, (0), 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 123 [2022-03-03 17:44:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:16,979 INFO L225 Difference]: With dead ends: 2837 [2022-03-03 17:44:16,979 INFO L226 Difference]: Without dead ends: 2536 [2022-03-03 17:44:16,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=797, Invalid=10541, Unknown=4, NotChecked=0, Total=11342 [2022-03-03 17:44:16,980 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1267 mSDsluCounter, 5309 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 5055 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:16,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 5055 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2685 Invalid, 0 Unknown, 216 Unchecked, 1.1s Time] [2022-03-03 17:44:16,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2022-03-03 17:44:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 1844. [2022-03-03 17:44:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 2.4997287032013022) internal successors, (4607), 1843 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 4607 transitions. [2022-03-03 17:44:17,016 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 4607 transitions. Word has length 123 [2022-03-03 17:44:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:17,022 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 4607 transitions. [2022-03-03 17:44:17,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.274193548387097) internal successors, (265), 62 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:17,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 4607 transitions. [2022-03-03 17:44:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-03 17:44:17,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:17,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:17,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:17,225 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 [2022-03-03 17:44:17,226 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -577538978, now seen corresponding path program 16 times [2022-03-03 17:44:17,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:17,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453504530] [2022-03-03 17:44:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:18,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:18,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453504530] [2022-03-03 17:44:18,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453504530] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:18,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523207189] [2022-03-03 17:44:18,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:44:18,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:18,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:18,068 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) [2022-03-03 17:44:18,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:44:18,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:44:18,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:18,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 69 conjunts are in the unsatisfiable core [2022-03-03 17:44:18,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:18,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:44:18,207 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-03 17:44:18,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-03-03 17:44:18,567 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:44:18,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-03-03 17:44:18,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:44:18,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:44:19,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:44:19,160 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 [2022-03-03 17:44:19,379 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 25 treesize of output 7 [2022-03-03 17:44:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:19,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:21,809 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-03-03 17:44:21,810 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 2 case distinctions, treesize of input 115 treesize of output 91 [2022-03-03 17:44:21,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:21,825 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 247 treesize of output 263 [2022-03-03 17:44:21,836 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:21,836 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 202 treesize of output 182 [2022-03-03 17:44:21,847 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:21,847 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 166 treesize of output 164 [2022-03-03 17:44:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:25,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523207189] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:25,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:25,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33, 34] total 87 [2022-03-03 17:44:25,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575441155] [2022-03-03 17:44:25,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:25,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-03 17:44:25,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-03 17:44:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=973, Invalid=6400, Unknown=109, NotChecked=0, Total=7482 [2022-03-03 17:44:25,857 INFO L87 Difference]: Start difference. First operand 1844 states and 4607 transitions. Second operand has 87 states, 87 states have (on average 3.6436781609195403) internal successors, (317), 87 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:30,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:30,849 INFO L93 Difference]: Finished difference Result 3085 states and 7763 transitions. [2022-03-03 17:44:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 17:44:30,849 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.6436781609195403) internal successors, (317), 87 states have internal predecessors, (317), 0 states have call successors, (0), 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 123 [2022-03-03 17:44:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:30,853 INFO L225 Difference]: With dead ends: 3085 [2022-03-03 17:44:30,853 INFO L226 Difference]: Without dead ends: 2704 [2022-03-03 17:44:30,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 202 SyntacticMatches, 5 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7283 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=3004, Invalid=19726, Unknown=222, NotChecked=0, Total=22952 [2022-03-03 17:44:30,856 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2348 mSDsluCounter, 5681 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 5211 SdHoareTripleChecker+Invalid, 4143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1855 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:30,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2348 Valid, 5211 Invalid, 4143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2130 Invalid, 0 Unknown, 1855 Unchecked, 0.8s Time] [2022-03-03 17:44:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2022-03-03 17:44:30,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1848. [2022-03-03 17:44:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 2.517596101786681) internal successors, (4650), 1847 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4650 transitions. [2022-03-03 17:44:30,881 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4650 transitions. Word has length 123 [2022-03-03 17:44:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:30,881 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 4650 transitions. [2022-03-03 17:44:30,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.6436781609195403) internal successors, (317), 87 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4650 transitions. [2022-03-03 17:44:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-03 17:44:30,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:30,884 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:30,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:31,100 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 [2022-03-03 17:44:31,101 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:31,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2064524892, now seen corresponding path program 17 times [2022-03-03 17:44:31,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:31,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904721663] [2022-03-03 17:44:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:31,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:31,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:31,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904721663] [2022-03-03 17:44:31,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904721663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:31,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338408812] [2022-03-03 17:44:31,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:44:31,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:31,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:31,210 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) [2022-03-03 17:44:31,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:44:31,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:44:31,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:31,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 17:44:31,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:31,497 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:44:31,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:44:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:44:31,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:31,613 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-03 17:44:31,613 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 24 treesize of output 15 [2022-03-03 17:44:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:44:31,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338408812] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:31,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:31,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 22 [2022-03-03 17:44:31,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152726762] [2022-03-03 17:44:31,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:31,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:44:31,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:44:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:44:31,862 INFO L87 Difference]: Start difference. First operand 1848 states and 4650 transitions. Second operand has 22 states, 22 states have (on average 12.590909090909092) internal successors, (277), 22 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:32,276 INFO L93 Difference]: Finished difference Result 3304 states and 7718 transitions. [2022-03-03 17:44:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:44:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.590909090909092) internal successors, (277), 22 states have internal predecessors, (277), 0 states have call successors, (0), 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 127 [2022-03-03 17:44:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:32,296 INFO L225 Difference]: With dead ends: 3304 [2022-03-03 17:44:32,296 INFO L226 Difference]: Without dead ends: 3275 [2022-03-03 17:44:32,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:44:32,297 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 781 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:32,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 2255 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 315 Invalid, 0 Unknown, 178 Unchecked, 0.1s Time] [2022-03-03 17:44:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2022-03-03 17:44:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2591. [2022-03-03 17:44:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2590 states have (on average 2.472200772200772) internal successors, (6403), 2590 states have internal predecessors, (6403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 6403 transitions. [2022-03-03 17:44:32,341 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 6403 transitions. Word has length 127 [2022-03-03 17:44:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:32,341 INFO L470 AbstractCegarLoop]: Abstraction has 2591 states and 6403 transitions. [2022-03-03 17:44:32,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.590909090909092) internal successors, (277), 22 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 6403 transitions. [2022-03-03 17:44:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-03 17:44:32,358 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:32,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:32,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:32,559 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 [2022-03-03 17:44:32,559 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash 945891334, now seen corresponding path program 18 times [2022-03-03 17:44:32,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:32,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984984634] [2022-03-03 17:44:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:32,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:32,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984984634] [2022-03-03 17:44:32,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984984634] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:32,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031161607] [2022-03-03 17:44:32,675 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:44:32,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:32,676 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) [2022-03-03 17:44:32,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:44:32,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:44:32,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:32,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:44:32,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:44:32,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:44:33,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031161607] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:33,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:33,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 7] total 21 [2022-03-03 17:44:33,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591176238] [2022-03-03 17:44:33,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:33,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:44:33,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:33,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:44:33,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:44:33,332 INFO L87 Difference]: Start difference. First operand 2591 states and 6403 transitions. Second operand has 21 states, 21 states have (on average 13.333333333333334) internal successors, (280), 21 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:33,591 INFO L93 Difference]: Finished difference Result 3968 states and 9813 transitions. [2022-03-03 17:44:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:44:33,591 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.333333333333334) internal successors, (280), 21 states have internal predecessors, (280), 0 states have call successors, (0), 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 127 [2022-03-03 17:44:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:33,595 INFO L225 Difference]: With dead ends: 3968 [2022-03-03 17:44:33,595 INFO L226 Difference]: Without dead ends: 3138 [2022-03-03 17:44:33,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:44:33,596 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 879 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:33,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1221 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:44:33,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-03-03 17:44:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2079. [2022-03-03 17:44:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2078 states have (on average 2.584696823869105) internal successors, (5371), 2078 states have internal predecessors, (5371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 5371 transitions. [2022-03-03 17:44:33,651 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 5371 transitions. Word has length 127 [2022-03-03 17:44:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:33,652 INFO L470 AbstractCegarLoop]: Abstraction has 2079 states and 5371 transitions. [2022-03-03 17:44:33,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.333333333333334) internal successors, (280), 21 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 5371 transitions. [2022-03-03 17:44:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:44:33,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:33,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:33,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-03 17:44:33,860 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 [2022-03-03 17:44:33,860 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash 53092897, now seen corresponding path program 19 times [2022-03-03 17:44:33,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:33,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268979900] [2022-03-03 17:44:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:34,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:34,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268979900] [2022-03-03 17:44:34,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268979900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:34,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497707265] [2022-03-03 17:44:34,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:44:34,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:34,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:34,919 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) [2022-03-03 17:44:34,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:44:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:35,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-03 17:44:35,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:35,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:44:35,193 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:44:35,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:44:36,131 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 [2022-03-03 17:44:36,203 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 [2022-03-03 17:44:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:36,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:36,524 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_736) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) (or (let ((.cse0 (+ c_~s~0 .cse1))) (and (<= .cse0 c_~N~0) (<= c_~N~0 .cse0))) (= .cse1 0)))) is different from false [2022-03-03 17:44:36,824 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:36,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 95 [2022-03-03 17:44:36,827 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 67 treesize of output 49 [2022-03-03 17:44:38,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:44:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:38,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497707265] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:38,327 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:38,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 90 [2022-03-03 17:44:38,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188367719] [2022-03-03 17:44:38,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:38,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-03 17:44:38,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:38,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-03 17:44:38,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=7327, Unknown=1, NotChecked=174, Total=8010 [2022-03-03 17:44:38,329 INFO L87 Difference]: Start difference. First operand 2079 states and 5371 transitions. Second operand has 90 states, 90 states have (on average 3.566666666666667) internal successors, (321), 90 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:42,971 WARN L838 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1) (= c_~s~0 0) (forall ((v_ArrVal_736 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_736) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) (or (let ((.cse0 (+ c_~s~0 .cse1))) (and (<= .cse0 c_~N~0) (<= c_~N~0 .cse0))) (= .cse1 0))))) is different from false [2022-03-03 17:44:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:44,155 INFO L93 Difference]: Finished difference Result 4536 states and 11791 transitions. [2022-03-03 17:44:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 17:44:44,159 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.566666666666667) internal successors, (321), 90 states have internal predecessors, (321), 0 states have call successors, (0), 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 130 [2022-03-03 17:44:44,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:44,164 INFO L225 Difference]: With dead ends: 4536 [2022-03-03 17:44:44,165 INFO L226 Difference]: Without dead ends: 4072 [2022-03-03 17:44:44,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 221 SyntacticMatches, 12 SemanticMatches, 153 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 7821 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2096, Invalid=21166, Unknown=2, NotChecked=606, Total=23870 [2022-03-03 17:44:44,175 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 2088 mSDsluCounter, 7745 mSDsCounter, 0 mSdLazyCounter, 3622 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 7214 SdHoareTripleChecker+Invalid, 4877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1104 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:44,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2088 Valid, 7214 Invalid, 4877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3622 Invalid, 0 Unknown, 1104 Unchecked, 1.3s Time] [2022-03-03 17:44:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2022-03-03 17:44:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2470. [2022-03-03 17:44:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2469 states have (on average 2.5686512758201703) internal successors, (6342), 2469 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 6342 transitions. [2022-03-03 17:44:44,206 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 6342 transitions. Word has length 130 [2022-03-03 17:44:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:44,206 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 6342 transitions. [2022-03-03 17:44:44,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.566666666666667) internal successors, (321), 90 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 6342 transitions. [2022-03-03 17:44:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:44:44,209 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:44,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:44,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:44,418 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 [2022-03-03 17:44:44,418 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1694119649, now seen corresponding path program 20 times [2022-03-03 17:44:44,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:44,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274686730] [2022-03-03 17:44:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:45,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:45,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274686730] [2022-03-03 17:44:45,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274686730] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:45,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859663901] [2022-03-03 17:44:45,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:44:45,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:45,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:45,497 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) [2022-03-03 17:44:45,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:44:45,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:44:45,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:45,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-03 17:44:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:45,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:44:45,874 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:44:45,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:44:47,104 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 [2022-03-03 17:44:47,243 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 25 treesize of output 7 [2022-03-03 17:44:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:47,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:48,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:44:48,325 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 111 treesize of output 95 [2022-03-03 17:44:48,328 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 67 treesize of output 49 [2022-03-03 17:44:50,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:44:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:50,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859663901] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:50,016 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:50,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 89 [2022-03-03 17:44:50,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646305964] [2022-03-03 17:44:50,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:50,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-03 17:44:50,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-03 17:44:50,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=7327, Unknown=4, NotChecked=0, Total=7832 [2022-03-03 17:44:50,018 INFO L87 Difference]: Start difference. First operand 2470 states and 6342 transitions. Second operand has 89 states, 89 states have (on average 3.6179775280898876) internal successors, (322), 89 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:58,888 INFO L93 Difference]: Finished difference Result 5592 states and 14506 transitions. [2022-03-03 17:44:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:44:58,888 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.6179775280898876) internal successors, (322), 89 states have internal predecessors, (322), 0 states have call successors, (0), 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 130 [2022-03-03 17:44:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:58,895 INFO L225 Difference]: With dead ends: 5592 [2022-03-03 17:44:58,896 INFO L226 Difference]: Without dead ends: 5163 [2022-03-03 17:44:58,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 211 SyntacticMatches, 14 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11871 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2825, Invalid=31548, Unknown=37, NotChecked=0, Total=34410 [2022-03-03 17:44:58,897 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 3320 mSDsluCounter, 8811 mSDsCounter, 0 mSdLazyCounter, 4817 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 8299 SdHoareTripleChecker+Invalid, 6640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 4817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1497 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:58,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3320 Valid, 8299 Invalid, 6640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 4817 Invalid, 0 Unknown, 1497 Unchecked, 2.0s Time] [2022-03-03 17:44:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2022-03-03 17:44:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 2680. [2022-03-03 17:44:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2679 states have (on average 2.58454647256439) internal successors, (6924), 2679 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 6924 transitions. [2022-03-03 17:44:58,937 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 6924 transitions. Word has length 130 [2022-03-03 17:44:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:58,938 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 6924 transitions. [2022-03-03 17:44:58,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.6179775280898876) internal successors, (322), 89 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 6924 transitions. [2022-03-03 17:44:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:44:58,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:58,942 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:58,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:59,147 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 [2022-03-03 17:44:59,147 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1738019113, now seen corresponding path program 21 times [2022-03-03 17:44:59,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:59,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142589051] [2022-03-03 17:44:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:59,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:00,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:00,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142589051] [2022-03-03 17:45:00,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142589051] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:00,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587758477] [2022-03-03 17:45:00,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:45:00,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:00,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:00,604 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) [2022-03-03 17:45:00,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:45:00,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:45:00,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:00,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:45:00,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:00,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:00,830 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:00,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:01,397 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 [2022-03-03 17:45:01,479 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 [2022-03-03 17:45:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:45:01,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:02,352 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:02,353 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 111 treesize of output 95 [2022-03-03 17:45:02,355 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 67 treesize of output 49 [2022-03-03 17:45:03,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:45:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:45:03,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587758477] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:03,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:03,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 23, 24] total 70 [2022-03-03 17:45:03,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964328456] [2022-03-03 17:45:03,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:03,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-03 17:45:03,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-03 17:45:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4551, Unknown=4, NotChecked=0, Total=4830 [2022-03-03 17:45:03,991 INFO L87 Difference]: Start difference. First operand 2680 states and 6924 transitions. Second operand has 70 states, 70 states have (on average 4.257142857142857) internal successors, (298), 70 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:09,457 INFO L93 Difference]: Finished difference Result 4398 states and 11452 transitions. [2022-03-03 17:45:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:45:09,457 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.257142857142857) internal successors, (298), 70 states have internal predecessors, (298), 0 states have call successors, (0), 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 130 [2022-03-03 17:45:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:09,462 INFO L225 Difference]: With dead ends: 4398 [2022-03-03 17:45:09,463 INFO L226 Difference]: Without dead ends: 4152 [2022-03-03 17:45:09,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 227 SyntacticMatches, 8 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6438 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1748, Invalid=20298, Unknown=6, NotChecked=0, Total=22052 [2022-03-03 17:45:09,467 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1921 mSDsluCounter, 6910 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 6530 SdHoareTripleChecker+Invalid, 4537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 993 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:09,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1921 Valid, 6530 Invalid, 4537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3393 Invalid, 0 Unknown, 993 Unchecked, 1.3s Time] [2022-03-03 17:45:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2022-03-03 17:45:09,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 2411. [2022-03-03 17:45:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2410 states have (on average 2.5580912863070537) internal successors, (6165), 2410 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 6165 transitions. [2022-03-03 17:45:09,499 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 6165 transitions. Word has length 130 [2022-03-03 17:45:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:09,499 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 6165 transitions. [2022-03-03 17:45:09,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.257142857142857) internal successors, (298), 70 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 6165 transitions. [2022-03-03 17:45:09,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:45:09,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:09,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:09,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:09,718 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 [2022-03-03 17:45:09,718 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:09,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash -910520801, now seen corresponding path program 22 times [2022-03-03 17:45:09,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:09,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269407033] [2022-03-03 17:45:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:09,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:10,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:10,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269407033] [2022-03-03 17:45:10,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269407033] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:10,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297179412] [2022-03-03 17:45:10,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:45:10,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:10,755 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) [2022-03-03 17:45:10,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:45:10,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:45:10,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:10,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-03 17:45:10,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:10,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:11,070 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:11,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:11,897 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 [2022-03-03 17:45:12,016 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-03-03 17:45:12,017 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 24 treesize of output 10 [2022-03-03 17:45:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:12,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:12,816 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:12,817 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 111 treesize of output 95 [2022-03-03 17:45:12,819 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 67 treesize of output 49 [2022-03-03 17:45:14,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:45:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:14,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297179412] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:14,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:14,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 87 [2022-03-03 17:45:14,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444701263] [2022-03-03 17:45:14,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:14,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-03 17:45:14,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-03 17:45:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=6927, Unknown=4, NotChecked=0, Total=7482 [2022-03-03 17:45:14,641 INFO L87 Difference]: Start difference. First operand 2411 states and 6165 transitions. Second operand has 87 states, 87 states have (on average 3.5172413793103448) internal successors, (306), 87 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:18,900 INFO L93 Difference]: Finished difference Result 3816 states and 9678 transitions. [2022-03-03 17:45:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 17:45:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.5172413793103448) internal successors, (306), 87 states have internal predecessors, (306), 0 states have call successors, (0), 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 130 [2022-03-03 17:45:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:18,905 INFO L225 Difference]: With dead ends: 3816 [2022-03-03 17:45:18,905 INFO L226 Difference]: Without dead ends: 3544 [2022-03-03 17:45:18,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 205 SyntacticMatches, 15 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7146 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1941, Invalid=17790, Unknown=9, NotChecked=0, Total=19740 [2022-03-03 17:45:18,907 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1869 mSDsluCounter, 6372 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 6008 SdHoareTripleChecker+Invalid, 3766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1179 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:18,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1869 Valid, 6008 Invalid, 3766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2452 Invalid, 0 Unknown, 1179 Unchecked, 0.9s Time] [2022-03-03 17:45:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2022-03-03 17:45:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 2316. [2022-03-03 17:45:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 2.5542116630669547) internal successors, (5913), 2315 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 5913 transitions. [2022-03-03 17:45:18,952 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 5913 transitions. Word has length 130 [2022-03-03 17:45:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:18,952 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 5913 transitions. [2022-03-03 17:45:18,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.5172413793103448) internal successors, (306), 87 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 5913 transitions. [2022-03-03 17:45:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:45:18,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:18,955 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:18,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:19,177 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 [2022-03-03 17:45:19,178 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash 15567689, now seen corresponding path program 23 times [2022-03-03 17:45:19,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:19,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126260450] [2022-03-03 17:45:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:19,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:20,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:20,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126260450] [2022-03-03 17:45:20,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126260450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:20,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571554254] [2022-03-03 17:45:20,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:45:20,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:20,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:20,083 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) [2022-03-03 17:45:20,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:45:20,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:45:20,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:20,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:45:20,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:20,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:20,369 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:20,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:20,865 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 [2022-03-03 17:45:21,118 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:45:21,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:45:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:45:21,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:21,533 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_872 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_872) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_872 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_872) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (< c_~q_front~0 0) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-03-03 17:45:21,572 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:21,572 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 82 treesize of output 74 [2022-03-03 17:45:21,575 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 53 treesize of output 47 [2022-03-03 17:45:21,577 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 47 treesize of output 41 [2022-03-03 17:45:22,538 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:45:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:45:22,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571554254] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:22,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:22,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 66 [2022-03-03 17:45:22,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894501688] [2022-03-03 17:45:22,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:22,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-03 17:45:22,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-03 17:45:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=3771, Unknown=1, NotChecked=126, Total=4290 [2022-03-03 17:45:22,554 INFO L87 Difference]: Start difference. First operand 2316 states and 5913 transitions. Second operand has 66 states, 66 states have (on average 4.424242424242424) internal successors, (292), 66 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:24,526 INFO L93 Difference]: Finished difference Result 3475 states and 8950 transitions. [2022-03-03 17:45:24,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 17:45:24,526 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.424242424242424) internal successors, (292), 66 states have internal predecessors, (292), 0 states have call successors, (0), 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 130 [2022-03-03 17:45:24,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:24,531 INFO L225 Difference]: With dead ends: 3475 [2022-03-03 17:45:24,531 INFO L226 Difference]: Without dead ends: 3153 [2022-03-03 17:45:24,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 236 SyntacticMatches, 7 SemanticMatches, 107 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3713 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1266, Invalid=10293, Unknown=1, NotChecked=212, Total=11772 [2022-03-03 17:45:24,533 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 1452 mSDsluCounter, 4312 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 938 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:24,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 4208 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1173 Invalid, 0 Unknown, 938 Unchecked, 0.4s Time] [2022-03-03 17:45:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-03-03 17:45:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2463. [2022-03-03 17:45:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2462 states have (on average 2.576360682372055) internal successors, (6343), 2462 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 6343 transitions. [2022-03-03 17:45:24,584 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 6343 transitions. Word has length 130 [2022-03-03 17:45:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:24,585 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 6343 transitions. [2022-03-03 17:45:24,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.424242424242424) internal successors, (292), 66 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 6343 transitions. [2022-03-03 17:45:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:45:24,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:24,589 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:24,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-03 17:45:24,794 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 [2022-03-03 17:45:24,795 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash 764854217, now seen corresponding path program 24 times [2022-03-03 17:45:24,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:24,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393610304] [2022-03-03 17:45:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:25,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:25,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393610304] [2022-03-03 17:45:25,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393610304] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:25,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700552588] [2022-03-03 17:45:25,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:45:25,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:25,920 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) [2022-03-03 17:45:25,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:45:26,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:45:26,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:26,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-03 17:45:26,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:26,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:26,596 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 [2022-03-03 17:45:26,902 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 [2022-03-03 17:45:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:45:27,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:27,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:27,603 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 111 treesize of output 95 [2022-03-03 17:45:27,606 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 67 treesize of output 49 [2022-03-03 17:45:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:45:28,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700552588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:28,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:28,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 23, 23] total 70 [2022-03-03 17:45:28,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13850285] [2022-03-03 17:45:28,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:28,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-03 17:45:28,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:28,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-03 17:45:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=4546, Unknown=2, NotChecked=0, Total=4830 [2022-03-03 17:45:28,659 INFO L87 Difference]: Start difference. First operand 2463 states and 6343 transitions. Second operand has 70 states, 70 states have (on average 4.4) internal successors, (308), 70 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:32,529 INFO L93 Difference]: Finished difference Result 3824 states and 9905 transitions. [2022-03-03 17:45:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:45:32,530 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.4) internal successors, (308), 70 states have internal predecessors, (308), 0 states have call successors, (0), 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 130 [2022-03-03 17:45:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:32,534 INFO L225 Difference]: With dead ends: 3824 [2022-03-03 17:45:32,534 INFO L226 Difference]: Without dead ends: 3341 [2022-03-03 17:45:32,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4091 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1344, Invalid=14154, Unknown=2, NotChecked=0, Total=15500 [2022-03-03 17:45:32,535 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 1563 mSDsluCounter, 5771 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 5531 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:32,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 5531 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3063 Invalid, 0 Unknown, 161 Unchecked, 1.3s Time] [2022-03-03 17:45:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2022-03-03 17:45:32,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 2089. [2022-03-03 17:45:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 2.5301724137931036) internal successors, (5283), 2088 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 5283 transitions. [2022-03-03 17:45:32,559 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 5283 transitions. Word has length 130 [2022-03-03 17:45:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:32,559 INFO L470 AbstractCegarLoop]: Abstraction has 2089 states and 5283 transitions. [2022-03-03 17:45:32,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.4) internal successors, (308), 70 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 5283 transitions. [2022-03-03 17:45:32,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:45:32,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:32,562 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:32,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:32,774 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 [2022-03-03 17:45:32,774 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:32,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1590563965, now seen corresponding path program 25 times [2022-03-03 17:45:32,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:32,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015861966] [2022-03-03 17:45:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:32,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:33,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:33,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015861966] [2022-03-03 17:45:33,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015861966] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:33,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958342000] [2022-03-03 17:45:33,821 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:45:33,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:33,822 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) [2022-03-03 17:45:33,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:45:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:33,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-03 17:45:33,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:33,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:34,217 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:34,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:35,200 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 [2022-03-03 17:45:35,385 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 25 treesize of output 7 [2022-03-03 17:45:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:35,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:36,438 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:36,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 95 [2022-03-03 17:45:36,441 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 67 treesize of output 49 [2022-03-03 17:45:38,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:45:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:38,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958342000] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:38,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:38,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 89 [2022-03-03 17:45:38,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302249524] [2022-03-03 17:45:38,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:38,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-03 17:45:38,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-03 17:45:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=7330, Unknown=3, NotChecked=0, Total=7832 [2022-03-03 17:45:38,584 INFO L87 Difference]: Start difference. First operand 2089 states and 5283 transitions. Second operand has 89 states, 89 states have (on average 3.5730337078651684) internal successors, (318), 89 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:48,603 INFO L93 Difference]: Finished difference Result 4112 states and 10535 transitions. [2022-03-03 17:45:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-03 17:45:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.5730337078651684) internal successors, (318), 89 states have internal predecessors, (318), 0 states have call successors, (0), 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 130 [2022-03-03 17:45:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:48,609 INFO L225 Difference]: With dead ends: 4112 [2022-03-03 17:45:48,609 INFO L226 Difference]: Without dead ends: 3855 [2022-03-03 17:45:48,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 205 SyntacticMatches, 18 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13370 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3082, Invalid=33584, Unknown=6, NotChecked=0, Total=36672 [2022-03-03 17:45:48,611 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 3149 mSDsluCounter, 8538 mSDsCounter, 0 mSdLazyCounter, 4829 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3149 SdHoareTripleChecker+Valid, 8082 SdHoareTripleChecker+Invalid, 6530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 4829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1413 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:48,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3149 Valid, 8082 Invalid, 6530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 4829 Invalid, 0 Unknown, 1413 Unchecked, 1.9s Time] [2022-03-03 17:45:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-03-03 17:45:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 2191. [2022-03-03 17:45:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2190 states have (on average 2.534703196347032) internal successors, (5551), 2190 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 5551 transitions. [2022-03-03 17:45:48,679 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 5551 transitions. Word has length 130 [2022-03-03 17:45:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:48,679 INFO L470 AbstractCegarLoop]: Abstraction has 2191 states and 5551 transitions. [2022-03-03 17:45:48,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.5730337078651684) internal successors, (318), 89 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 5551 transitions. [2022-03-03 17:45:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:45:48,683 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:48,683 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:48,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:48,898 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 [2022-03-03 17:45:48,899 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:48,899 INFO L85 PathProgramCache]: Analyzing trace with hash 645597659, now seen corresponding path program 26 times [2022-03-03 17:45:48,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:48,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430906788] [2022-03-03 17:45:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:48,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:50,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:50,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430906788] [2022-03-03 17:45:50,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430906788] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:50,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123780540] [2022-03-03 17:45:50,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:45:50,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:50,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:50,087 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) [2022-03-03 17:45:50,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:45:50,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:45:50,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:50,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-03 17:45:50,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:50,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:45:50,473 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:45:50,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:45:51,302 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 [2022-03-03 17:45:51,493 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 25 treesize of output 7 [2022-03-03 17:45:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:51,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:52,321 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:52,322 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 111 treesize of output 95 [2022-03-03 17:45:52,327 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 67 treesize of output 49 [2022-03-03 17:45:53,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:45:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:53,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123780540] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:53,832 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:53,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 90 [2022-03-03 17:45:53,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126840849] [2022-03-03 17:45:53,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:53,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-03 17:45:53,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:53,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-03 17:45:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=7496, Unknown=2, NotChecked=0, Total=8010 [2022-03-03 17:45:53,834 INFO L87 Difference]: Start difference. First operand 2191 states and 5551 transitions. Second operand has 90 states, 90 states have (on average 3.5555555555555554) internal successors, (320), 90 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:00,679 INFO L93 Difference]: Finished difference Result 3960 states and 10121 transitions. [2022-03-03 17:46:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-03 17:46:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.5555555555555554) internal successors, (320), 90 states have internal predecessors, (320), 0 states have call successors, (0), 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 130 [2022-03-03 17:46:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:00,684 INFO L225 Difference]: With dead ends: 3960 [2022-03-03 17:46:00,684 INFO L226 Difference]: Without dead ends: 3646 [2022-03-03 17:46:00,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 207 SyntacticMatches, 12 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11350 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2702, Invalid=29514, Unknown=4, NotChecked=0, Total=32220 [2022-03-03 17:46:00,687 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 3273 mSDsluCounter, 6500 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3273 SdHoareTripleChecker+Valid, 6262 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1114 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:00,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3273 Valid, 6262 Invalid, 4920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 3551 Invalid, 0 Unknown, 1114 Unchecked, 1.3s Time] [2022-03-03 17:46:00,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2022-03-03 17:46:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 2157. [2022-03-03 17:46:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 2156 states have (on average 2.533395176252319) internal successors, (5462), 2156 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 5462 transitions. [2022-03-03 17:46:00,723 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 5462 transitions. Word has length 130 [2022-03-03 17:46:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:00,723 INFO L470 AbstractCegarLoop]: Abstraction has 2157 states and 5462 transitions. [2022-03-03 17:46:00,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.5555555555555554) internal successors, (320), 90 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 5462 transitions. [2022-03-03 17:46:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:46:00,726 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:00,727 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:00,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:00,939 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 [2022-03-03 17:46:00,940 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash 4021751, now seen corresponding path program 27 times [2022-03-03 17:46:00,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:00,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522135057] [2022-03-03 17:46:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:00,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:02,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:02,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522135057] [2022-03-03 17:46:02,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522135057] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:02,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148571028] [2022-03-03 17:46:02,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:46:02,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:02,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:02,017 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) [2022-03-03 17:46:02,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:46:02,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:46:02,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:02,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:46:02,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:02,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:46:02,294 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:46:02,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:46:02,845 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 [2022-03-03 17:46:02,922 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 [2022-03-03 17:46:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:03,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:03,803 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:03,804 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 111 treesize of output 95 [2022-03-03 17:46:03,807 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 67 treesize of output 49 [2022-03-03 17:46:04,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:46:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:04,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148571028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:04,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:04,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 23, 23] total 63 [2022-03-03 17:46:04,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418113913] [2022-03-03 17:46:04,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:04,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-03 17:46:04,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-03 17:46:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3667, Unknown=3, NotChecked=0, Total=3906 [2022-03-03 17:46:04,624 INFO L87 Difference]: Start difference. First operand 2157 states and 5462 transitions. Second operand has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:07,970 INFO L93 Difference]: Finished difference Result 3069 states and 7873 transitions. [2022-03-03 17:46:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:46:07,970 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 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 130 [2022-03-03 17:46:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:07,974 INFO L225 Difference]: With dead ends: 3069 [2022-03-03 17:46:07,974 INFO L226 Difference]: Without dead ends: 2821 [2022-03-03 17:46:07,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 229 SyntacticMatches, 6 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1078, Invalid=11351, Unknown=3, NotChecked=0, Total=12432 [2022-03-03 17:46:07,976 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1436 mSDsluCounter, 5655 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 5417 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:07,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 5417 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2747 Invalid, 0 Unknown, 256 Unchecked, 1.1s Time] [2022-03-03 17:46:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2022-03-03 17:46:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 2153. [2022-03-03 17:46:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.5311338289962824) internal successors, (5447), 2152 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 5447 transitions. [2022-03-03 17:46:08,031 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 5447 transitions. Word has length 130 [2022-03-03 17:46:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:08,032 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 5447 transitions. [2022-03-03 17:46:08,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 5447 transitions. [2022-03-03 17:46:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:46:08,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:08,034 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:08,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:08,247 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 [2022-03-03 17:46:08,247 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash -491141122, now seen corresponding path program 28 times [2022-03-03 17:46:08,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:08,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871142792] [2022-03-03 17:46:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:08,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:08,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:08,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871142792] [2022-03-03 17:46:08,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871142792] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:08,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210595006] [2022-03-03 17:46:08,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:46:08,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:08,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:08,847 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) [2022-03-03 17:46:08,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:46:08,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:46:08,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:08,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:46:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:08,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:46:09,133 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:46:09,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:46:10,018 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 [2022-03-03 17:46:10,193 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:10,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2022-03-03 17:46:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:10,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:10,500 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:10,500 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 [2022-03-03 17:46:10,502 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 25 treesize of output 18 [2022-03-03 17:46:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:12,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210595006] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:12,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:12,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 67 [2022-03-03 17:46:12,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409225498] [2022-03-03 17:46:12,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:12,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-03-03 17:46:12,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-03-03 17:46:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=3919, Unknown=15, NotChecked=0, Total=4422 [2022-03-03 17:46:12,126 INFO L87 Difference]: Start difference. First operand 2153 states and 5447 transitions. Second operand has 67 states, 67 states have (on average 4.641791044776119) internal successors, (311), 67 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:16,546 INFO L93 Difference]: Finished difference Result 10298 states and 28778 transitions. [2022-03-03 17:46:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-03 17:46:16,546 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.641791044776119) internal successors, (311), 67 states have internal predecessors, (311), 0 states have call successors, (0), 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 135 [2022-03-03 17:46:16,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:16,563 INFO L225 Difference]: With dead ends: 10298 [2022-03-03 17:46:16,564 INFO L226 Difference]: Without dead ends: 9390 [2022-03-03 17:46:16,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 242 SyntacticMatches, 18 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5047 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2204, Invalid=14037, Unknown=15, NotChecked=0, Total=16256 [2022-03-03 17:46:16,565 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 1886 mSDsluCounter, 6029 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 5939 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 950 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:16,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 5939 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1687 Invalid, 0 Unknown, 950 Unchecked, 0.6s Time] [2022-03-03 17:46:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2022-03-03 17:46:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 4831. [2022-03-03 17:46:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4831 states, 4830 states have (on average 2.741821946169772) internal successors, (13243), 4830 states have internal predecessors, (13243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4831 states to 4831 states and 13243 transitions. [2022-03-03 17:46:16,735 INFO L78 Accepts]: Start accepts. Automaton has 4831 states and 13243 transitions. Word has length 135 [2022-03-03 17:46:16,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:16,735 INFO L470 AbstractCegarLoop]: Abstraction has 4831 states and 13243 transitions. [2022-03-03 17:46:16,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.641791044776119) internal successors, (311), 67 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4831 states and 13243 transitions. [2022-03-03 17:46:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:46:16,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:16,741 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:16,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:16,958 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 [2022-03-03 17:46:16,958 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:16,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1444166304, now seen corresponding path program 29 times [2022-03-03 17:46:16,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:16,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194488750] [2022-03-03 17:46:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:16,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:17,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:17,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194488750] [2022-03-03 17:46:17,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194488750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:17,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475903134] [2022-03-03 17:46:17,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:46:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:17,540 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) [2022-03-03 17:46:17,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:46:17,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:46:17,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:17,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 17:46:17,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:18,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:46:18,221 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 [2022-03-03 17:46:18,306 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 [2022-03-03 17:46:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:46:18,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:18,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:18,533 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 [2022-03-03 17:46:18,536 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 25 treesize of output 18 [2022-03-03 17:46:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:19,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475903134] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:19,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:19,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 14] total 52 [2022-03-03 17:46:19,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230887048] [2022-03-03 17:46:19,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:19,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 17:46:19,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:19,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 17:46:19,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2445, Unknown=2, NotChecked=0, Total=2652 [2022-03-03 17:46:19,207 INFO L87 Difference]: Start difference. First operand 4831 states and 13243 transitions. Second operand has 52 states, 52 states have (on average 6.230769230769231) internal successors, (324), 52 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:21,501 INFO L93 Difference]: Finished difference Result 9184 states and 23961 transitions. [2022-03-03 17:46:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 17:46:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.230769230769231) internal successors, (324), 52 states have internal predecessors, (324), 0 states have call successors, (0), 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 135 [2022-03-03 17:46:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:21,509 INFO L225 Difference]: With dead ends: 9184 [2022-03-03 17:46:21,509 INFO L226 Difference]: Without dead ends: 6489 [2022-03-03 17:46:21,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2687 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1048, Invalid=10292, Unknown=2, NotChecked=0, Total=11342 [2022-03-03 17:46:21,510 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1512 mSDsluCounter, 4233 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 4272 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:21,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 4272 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1860 Invalid, 0 Unknown, 129 Unchecked, 0.6s Time] [2022-03-03 17:46:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6489 states. [2022-03-03 17:46:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6489 to 3415. [2022-03-03 17:46:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3414 states have (on average 2.6083772700644405) internal successors, (8905), 3414 states have internal predecessors, (8905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 8905 transitions. [2022-03-03 17:46:21,560 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 8905 transitions. Word has length 135 [2022-03-03 17:46:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:21,560 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 8905 transitions. [2022-03-03 17:46:21,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.230769230769231) internal successors, (324), 52 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 8905 transitions. [2022-03-03 17:46:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:46:21,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:21,564 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:21,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:21,780 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 [2022-03-03 17:46:21,781 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1470786520, now seen corresponding path program 30 times [2022-03-03 17:46:21,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:21,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35898172] [2022-03-03 17:46:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:22,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:22,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35898172] [2022-03-03 17:46:22,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35898172] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:22,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858928785] [2022-03-03 17:46:22,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:46:22,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:22,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:22,336 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) [2022-03-03 17:46:22,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:46:22,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:46:22,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:22,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-03 17:46:22,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:22,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:46:22,996 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 [2022-03-03 17:46:23,110 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:46:23,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:46:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:23,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:23,197 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1107 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1107) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 0))) is different from false [2022-03-03 17:46:23,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:23,214 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 [2022-03-03 17:46:23,215 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 25 treesize of output 18 [2022-03-03 17:46:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 5 not checked. [2022-03-03 17:46:23,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858928785] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:23,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:23,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 46 [2022-03-03 17:46:23,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126740461] [2022-03-03 17:46:23,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:23,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 17:46:23,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 17:46:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1856, Unknown=1, NotChecked=86, Total=2070 [2022-03-03 17:46:23,566 INFO L87 Difference]: Start difference. First operand 3415 states and 8905 transitions. Second operand has 46 states, 46 states have (on average 6.586956521739131) internal successors, (303), 46 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:25,767 INFO L93 Difference]: Finished difference Result 7846 states and 20395 transitions. [2022-03-03 17:46:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:46:25,768 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.586956521739131) internal successors, (303), 46 states have internal predecessors, (303), 0 states have call successors, (0), 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 135 [2022-03-03 17:46:25,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:25,779 INFO L225 Difference]: With dead ends: 7846 [2022-03-03 17:46:25,779 INFO L226 Difference]: Without dead ends: 7846 [2022-03-03 17:46:25,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=764, Invalid=6895, Unknown=1, NotChecked=172, Total=7832 [2022-03-03 17:46:25,780 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 1439 mSDsluCounter, 7367 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 7223 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 753 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:25,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1439 Valid, 7223 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1619 Invalid, 0 Unknown, 753 Unchecked, 0.5s Time] [2022-03-03 17:46:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7846 states. [2022-03-03 17:46:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7846 to 4147. [2022-03-03 17:46:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4146 states have (on average 2.657501205981669) internal successors, (11018), 4146 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 11018 transitions. [2022-03-03 17:46:25,850 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 11018 transitions. Word has length 135 [2022-03-03 17:46:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:25,850 INFO L470 AbstractCegarLoop]: Abstraction has 4147 states and 11018 transitions. [2022-03-03 17:46:25,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.586956521739131) internal successors, (303), 46 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 11018 transitions. [2022-03-03 17:46:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:46:25,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:25,857 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:25,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:26,074 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 [2022-03-03 17:46:26,074 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -884682110, now seen corresponding path program 31 times [2022-03-03 17:46:26,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:26,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855854157] [2022-03-03 17:46:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:26,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:26,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:26,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855854157] [2022-03-03 17:46:26,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855854157] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:26,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539752601] [2022-03-03 17:46:26,757 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:46:26,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:26,758 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) [2022-03-03 17:46:26,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:46:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:26,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:46:26,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:26,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:46:27,116 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:46:27,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:46:28,060 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 [2022-03-03 17:46:28,272 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-03 17:46:28,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-03 17:46:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:28,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:28,502 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:28,502 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 [2022-03-03 17:46:28,504 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 25 treesize of output 18 [2022-03-03 17:46:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:30,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539752601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:30,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:30,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 72 [2022-03-03 17:46:30,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229261576] [2022-03-03 17:46:30,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:30,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-03 17:46:30,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-03 17:46:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=4721, Unknown=12, NotChecked=0, Total=5112 [2022-03-03 17:46:30,888 INFO L87 Difference]: Start difference. First operand 4147 states and 11018 transitions. Second operand has 72 states, 72 states have (on average 4.597222222222222) internal successors, (331), 72 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:35,305 INFO L93 Difference]: Finished difference Result 8875 states and 24381 transitions. [2022-03-03 17:46:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:46:35,306 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.597222222222222) internal successors, (331), 72 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-03-03 17:46:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:35,321 INFO L225 Difference]: With dead ends: 8875 [2022-03-03 17:46:35,322 INFO L226 Difference]: Without dead ends: 8875 [2022-03-03 17:46:35,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 235 SyntacticMatches, 12 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3671 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1618, Invalid=13131, Unknown=13, NotChecked=0, Total=14762 [2022-03-03 17:46:35,323 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1684 mSDsluCounter, 7968 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 7933 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 609 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:35,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 7933 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2057 Invalid, 0 Unknown, 609 Unchecked, 0.8s Time] [2022-03-03 17:46:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2022-03-03 17:46:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 6419. [2022-03-03 17:46:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6419 states, 6418 states have (on average 2.7863820504830166) internal successors, (17883), 6418 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 17883 transitions. [2022-03-03 17:46:35,449 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 17883 transitions. Word has length 135 [2022-03-03 17:46:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:35,449 INFO L470 AbstractCegarLoop]: Abstraction has 6419 states and 17883 transitions. [2022-03-03 17:46:35,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.597222222222222) internal successors, (331), 72 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 17883 transitions. [2022-03-03 17:46:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:46:35,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:35,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:35,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-03 17:46:35,678 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 [2022-03-03 17:46:35,678 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:35,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1428097590, now seen corresponding path program 32 times [2022-03-03 17:46:35,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:35,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724115919] [2022-03-03 17:46:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:35,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:36,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:36,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724115919] [2022-03-03 17:46:36,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724115919] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:36,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388949059] [2022-03-03 17:46:36,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:46:36,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:36,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:36,377 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) [2022-03-03 17:46:36,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:46:36,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:46:36,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-03 17:46:36,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:46:37,727 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 [2022-03-03 17:46:38,022 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-03-03 17:46:38,022 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 24 treesize of output 10 [2022-03-03 17:46:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:38,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:38,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:38,471 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 [2022-03-03 17:46:38,473 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 25 treesize of output 18 [2022-03-03 17:46:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:40,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388949059] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:40,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:40,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 71 [2022-03-03 17:46:40,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83768448] [2022-03-03 17:46:40,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:40,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-03 17:46:40,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:40,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-03 17:46:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4613, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:46:40,872 INFO L87 Difference]: Start difference. First operand 6419 states and 17883 transitions. Second operand has 71 states, 71 states have (on average 4.661971830985915) internal successors, (331), 71 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:46,707 INFO L93 Difference]: Finished difference Result 10291 states and 28094 transitions. [2022-03-03 17:46:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 17:46:46,708 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.661971830985915) internal successors, (331), 71 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-03-03 17:46:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:46,721 INFO L225 Difference]: With dead ends: 10291 [2022-03-03 17:46:46,721 INFO L226 Difference]: Without dead ends: 10291 [2022-03-03 17:46:46,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 236 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3953 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1837, Invalid=15192, Unknown=1, NotChecked=0, Total=17030 [2022-03-03 17:46:46,735 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 2270 mSDsluCounter, 7061 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 6993 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 657 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:46,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2270 Valid, 6993 Invalid, 3428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2490 Invalid, 0 Unknown, 657 Unchecked, 1.1s Time] [2022-03-03 17:46:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10291 states. [2022-03-03 17:46:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10291 to 7291. [2022-03-03 17:46:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7291 states, 7290 states have (on average 2.797668038408779) internal successors, (20395), 7290 states have internal predecessors, (20395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7291 states to 7291 states and 20395 transitions. [2022-03-03 17:46:46,863 INFO L78 Accepts]: Start accepts. Automaton has 7291 states and 20395 transitions. Word has length 135 [2022-03-03 17:46:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:46,863 INFO L470 AbstractCegarLoop]: Abstraction has 7291 states and 20395 transitions. [2022-03-03 17:46:46,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.661971830985915) internal successors, (331), 71 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 7291 states and 20395 transitions. [2022-03-03 17:46:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:46:46,872 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:46,872 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:46,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:47,085 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 [2022-03-03 17:46:47,085 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash 171756722, now seen corresponding path program 33 times [2022-03-03 17:46:47,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:47,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429028813] [2022-03-03 17:46:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:47,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:47,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429028813] [2022-03-03 17:46:47,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429028813] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:47,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054251550] [2022-03-03 17:46:47,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:46:47,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:47,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:47,581 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) [2022-03-03 17:46:47,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:46:47,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:46:47,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:47,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-03 17:46:47,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:48,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:46:48,125 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 [2022-03-03 17:46:48,182 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 [2022-03-03 17:46:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:48,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:48,302 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1207 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1207) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 0))) is different from false [2022-03-03 17:46:48,331 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:48,331 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 [2022-03-03 17:46:48,333 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 25 treesize of output 18 [2022-03-03 17:46:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 5 not checked. [2022-03-03 17:46:48,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054251550] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:48,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:48,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 48 [2022-03-03 17:46:48,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262113714] [2022-03-03 17:46:48,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:48,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-03 17:46:48,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-03 17:46:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=2037, Unknown=1, NotChecked=90, Total=2256 [2022-03-03 17:46:48,765 INFO L87 Difference]: Start difference. First operand 7291 states and 20395 transitions. Second operand has 48 states, 48 states have (on average 6.5625) internal successors, (315), 48 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:51,014 INFO L93 Difference]: Finished difference Result 12698 states and 34630 transitions. [2022-03-03 17:46:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:46:51,015 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.5625) internal successors, (315), 48 states have internal predecessors, (315), 0 states have call successors, (0), 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 135 [2022-03-03 17:46:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:51,034 INFO L225 Difference]: With dead ends: 12698 [2022-03-03 17:46:51,035 INFO L226 Difference]: Without dead ends: 12698 [2022-03-03 17:46:51,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=904, Invalid=6581, Unknown=1, NotChecked=170, Total=7656 [2022-03-03 17:46:51,035 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1797 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:51,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1797 Valid, 4693 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2116 Invalid, 0 Unknown, 266 Unchecked, 0.8s Time] [2022-03-03 17:46:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2022-03-03 17:46:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 6941. [2022-03-03 17:46:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6941 states, 6940 states have (on average 2.7737752161383287) internal successors, (19250), 6940 states have internal predecessors, (19250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 19250 transitions. [2022-03-03 17:46:51,162 INFO L78 Accepts]: Start accepts. Automaton has 6941 states and 19250 transitions. Word has length 135 [2022-03-03 17:46:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:51,162 INFO L470 AbstractCegarLoop]: Abstraction has 6941 states and 19250 transitions. [2022-03-03 17:46:51,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.5625) internal successors, (315), 48 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6941 states and 19250 transitions. [2022-03-03 17:46:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-03 17:46:51,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:51,170 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:51,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:51,379 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 [2022-03-03 17:46:51,379 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -585841728, now seen corresponding path program 34 times [2022-03-03 17:46:51,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:51,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575246503] [2022-03-03 17:46:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:51,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:52,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:52,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575246503] [2022-03-03 17:46:52,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575246503] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:52,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971776996] [2022-03-03 17:46:52,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:46:52,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:52,364 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) [2022-03-03 17:46:52,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:46:52,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:46:52,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:52,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 75 conjunts are in the unsatisfiable core [2022-03-03 17:46:52,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:52,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:46:52,641 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:46:52,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:46:53,642 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 [2022-03-03 17:46:53,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:46:53,802 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:53,802 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 21 treesize of output 10 [2022-03-03 17:46:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:53,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:54,122 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1245 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1245) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) (or (let ((.cse0 (+ c_~s~0 .cse1))) (and (<= c_~N~0 .cse0) (<= .cse0 c_~N~0))) (= .cse1 0)))) is different from false [2022-03-03 17:46:54,481 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:46:54,487 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 111 treesize of output 95 [2022-03-03 17:46:54,491 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 67 treesize of output 49 [2022-03-03 17:46:56,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:46:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:56,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971776996] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:56,877 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:56,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 86 [2022-03-03 17:46:56,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013921952] [2022-03-03 17:46:56,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:56,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-03-03 17:46:56,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-03-03 17:46:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=6602, Unknown=1, NotChecked=166, Total=7310 [2022-03-03 17:46:56,878 INFO L87 Difference]: Start difference. First operand 6941 states and 19250 transitions. Second operand has 86 states, 86 states have (on average 3.7906976744186047) internal successors, (326), 86 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:00,231 INFO L93 Difference]: Finished difference Result 9400 states and 25742 transitions. [2022-03-03 17:47:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 17:47:00,231 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.7906976744186047) internal successors, (326), 86 states have internal predecessors, (326), 0 states have call successors, (0), 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 137 [2022-03-03 17:47:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:00,246 INFO L225 Difference]: With dead ends: 9400 [2022-03-03 17:47:00,246 INFO L226 Difference]: Without dead ends: 9065 [2022-03-03 17:47:00,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 224 SyntacticMatches, 13 SemanticMatches, 143 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6729 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2334, Invalid=18261, Unknown=1, NotChecked=284, Total=20880 [2022-03-03 17:47:00,248 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 2239 mSDsluCounter, 6143 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 5627 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1774 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:00,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2239 Valid, 5627 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1961 Invalid, 0 Unknown, 1774 Unchecked, 0.7s Time] [2022-03-03 17:47:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2022-03-03 17:47:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 6894. [2022-03-03 17:47:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6894 states, 6893 states have (on average 2.7777455389525607) internal successors, (19147), 6893 states have internal predecessors, (19147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 19147 transitions. [2022-03-03 17:47:00,386 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 19147 transitions. Word has length 137 [2022-03-03 17:47:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:00,387 INFO L470 AbstractCegarLoop]: Abstraction has 6894 states and 19147 transitions. [2022-03-03 17:47:00,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.7906976744186047) internal successors, (326), 86 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 19147 transitions. [2022-03-03 17:47:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-03 17:47:00,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:00,395 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:00,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-03 17:47:00,611 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 [2022-03-03 17:47:00,612 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1952880244, now seen corresponding path program 35 times [2022-03-03 17:47:00,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:00,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276551688] [2022-03-03 17:47:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:01,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:01,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276551688] [2022-03-03 17:47:01,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276551688] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:01,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835274404] [2022-03-03 17:47:01,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:47:01,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:01,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:01,983 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) [2022-03-03 17:47:01,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:47:02,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:47:02,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:02,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 17:47:02,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:02,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:47:02,442 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:47:02,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:47:03,277 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 [2022-03-03 17:47:03,412 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 [2022-03-03 17:47:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:47:03,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:04,199 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:47:04,199 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 111 treesize of output 95 [2022-03-03 17:47:04,202 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 67 treesize of output 49 [2022-03-03 17:47:05,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:47:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:47:05,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835274404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:05,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:05,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 27, 23] total 70 [2022-03-03 17:47:05,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400735810] [2022-03-03 17:47:05,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:05,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-03 17:47:05,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-03 17:47:05,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=4545, Unknown=2, NotChecked=0, Total=4830 [2022-03-03 17:47:05,094 INFO L87 Difference]: Start difference. First operand 6894 states and 19147 transitions. Second operand has 70 states, 70 states have (on average 4.242857142857143) internal successors, (297), 70 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:10,070 INFO L93 Difference]: Finished difference Result 10078 states and 27814 transitions. [2022-03-03 17:47:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 17:47:10,071 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.242857142857143) internal successors, (297), 70 states have internal predecessors, (297), 0 states have call successors, (0), 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 137 [2022-03-03 17:47:10,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:10,084 INFO L225 Difference]: With dead ends: 10078 [2022-03-03 17:47:10,084 INFO L226 Difference]: Without dead ends: 9730 [2022-03-03 17:47:10,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 243 SyntacticMatches, 8 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5120 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1624, Invalid=15666, Unknown=2, NotChecked=0, Total=17292 [2022-03-03 17:47:10,087 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2288 mSDsluCounter, 6386 mSDsCounter, 0 mSdLazyCounter, 3385 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 4079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 3385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 560 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:10,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 5972 Invalid, 4079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 3385 Invalid, 0 Unknown, 560 Unchecked, 1.3s Time] [2022-03-03 17:47:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9730 states. [2022-03-03 17:47:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9730 to 6758. [2022-03-03 17:47:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6758 states, 6757 states have (on average 2.784963741305313) internal successors, (18818), 6757 states have internal predecessors, (18818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6758 states to 6758 states and 18818 transitions. [2022-03-03 17:47:10,185 INFO L78 Accepts]: Start accepts. Automaton has 6758 states and 18818 transitions. Word has length 137 [2022-03-03 17:47:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:10,185 INFO L470 AbstractCegarLoop]: Abstraction has 6758 states and 18818 transitions. [2022-03-03 17:47:10,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.242857142857143) internal successors, (297), 70 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6758 states and 18818 transitions. [2022-03-03 17:47:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-03 17:47:10,193 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:10,193 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:10,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:10,410 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 [2022-03-03 17:47:10,410 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1237215530, now seen corresponding path program 36 times [2022-03-03 17:47:10,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:10,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944860579] [2022-03-03 17:47:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:11,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:11,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944860579] [2022-03-03 17:47:11,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944860579] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:11,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452048996] [2022-03-03 17:47:11,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:47:11,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:11,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:11,734 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) [2022-03-03 17:47:11,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:47:11,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:47:11,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:11,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-03 17:47:11,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:11,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:47:12,000 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:47:12,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:47:12,549 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 [2022-03-03 17:47:12,682 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 [2022-03-03 17:47:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-03-03 17:47:12,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:13,371 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:47:13,371 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 82 treesize of output 74 [2022-03-03 17:47:13,374 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 53 treesize of output 47 [2022-03-03 17:47:13,376 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 47 treesize of output 41 [2022-03-03 17:47:14,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:47:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:47:14,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452048996] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:14,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:14,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 24, 22] total 69 [2022-03-03 17:47:14,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211863896] [2022-03-03 17:47:14,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:14,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-03 17:47:14,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-03 17:47:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4439, Unknown=3, NotChecked=0, Total=4692 [2022-03-03 17:47:14,165 INFO L87 Difference]: Start difference. First operand 6758 states and 18818 transitions. Second operand has 69 states, 69 states have (on average 4.304347826086956) internal successors, (297), 69 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:18,901 INFO L93 Difference]: Finished difference Result 11235 states and 30989 transitions. [2022-03-03 17:47:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 17:47:18,901 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.304347826086956) internal successors, (297), 69 states have internal predecessors, (297), 0 states have call successors, (0), 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 137 [2022-03-03 17:47:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:18,919 INFO L225 Difference]: With dead ends: 11235 [2022-03-03 17:47:18,919 INFO L226 Difference]: Without dead ends: 10987 [2022-03-03 17:47:18,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 245 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5418 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1417, Invalid=18039, Unknown=4, NotChecked=0, Total=19460 [2022-03-03 17:47:18,921 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1921 mSDsluCounter, 6497 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 6115 SdHoareTripleChecker+Invalid, 4037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 775 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:18,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1921 Valid, 6115 Invalid, 4037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3157 Invalid, 0 Unknown, 775 Unchecked, 1.1s Time] [2022-03-03 17:47:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2022-03-03 17:47:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 6711. [2022-03-03 17:47:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6711 states, 6710 states have (on average 2.7849478390462) internal successors, (18687), 6710 states have internal predecessors, (18687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6711 states to 6711 states and 18687 transitions. [2022-03-03 17:47:19,088 INFO L78 Accepts]: Start accepts. Automaton has 6711 states and 18687 transitions. Word has length 137 [2022-03-03 17:47:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:19,088 INFO L470 AbstractCegarLoop]: Abstraction has 6711 states and 18687 transitions. [2022-03-03 17:47:19,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.304347826086956) internal successors, (297), 69 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:19,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6711 states and 18687 transitions. [2022-03-03 17:47:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-03 17:47:19,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:19,105 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:19,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-03 17:47:19,321 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 [2022-03-03 17:47:19,322 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2088558330, now seen corresponding path program 37 times [2022-03-03 17:47:19,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:19,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219037548] [2022-03-03 17:47:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:19,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:20,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:20,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219037548] [2022-03-03 17:47:20,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219037548] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:20,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608978528] [2022-03-03 17:47:20,585 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:47:20,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:20,587 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) [2022-03-03 17:47:20,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:47:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:20,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-03 17:47:20,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:20,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:47:21,021 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:47:21,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:47:21,904 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 [2022-03-03 17:47:22,046 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 25 treesize of output 7 [2022-03-03 17:47:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:22,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:22,849 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:47:22,849 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 111 treesize of output 95 [2022-03-03 17:47:22,852 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 67 treesize of output 49 [2022-03-03 17:47:24,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:47:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:24,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608978528] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:24,659 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:24,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 97 [2022-03-03 17:47:24,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554316758] [2022-03-03 17:47:24,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:24,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-03-03 17:47:24,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-03-03 17:47:24,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=8694, Unknown=3, NotChecked=0, Total=9312 [2022-03-03 17:47:24,666 INFO L87 Difference]: Start difference. First operand 6711 states and 18687 transitions. Second operand has 97 states, 97 states have (on average 3.6597938144329896) internal successors, (355), 97 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:31,043 INFO L93 Difference]: Finished difference Result 10067 states and 27646 transitions. [2022-03-03 17:47:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-03 17:47:31,043 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.6597938144329896) internal successors, (355), 97 states have internal predecessors, (355), 0 states have call successors, (0), 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 137 [2022-03-03 17:47:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:31,058 INFO L225 Difference]: With dead ends: 10067 [2022-03-03 17:47:31,058 INFO L226 Difference]: Without dead ends: 9795 [2022-03-03 17:47:31,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 217 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10139 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3111, Invalid=29827, Unknown=4, NotChecked=0, Total=32942 [2022-03-03 17:47:31,062 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 2555 mSDsluCounter, 6100 mSDsCounter, 0 mSdLazyCounter, 3473 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 5820 SdHoareTripleChecker+Invalid, 4308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 626 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:31,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2555 Valid, 5820 Invalid, 4308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3473 Invalid, 0 Unknown, 626 Unchecked, 1.2s Time] [2022-03-03 17:47:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2022-03-03 17:47:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 6728. [2022-03-03 17:47:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6728 states, 6727 states have (on average 2.7813289727961945) internal successors, (18710), 6727 states have internal predecessors, (18710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6728 states to 6728 states and 18710 transitions. [2022-03-03 17:47:31,169 INFO L78 Accepts]: Start accepts. Automaton has 6728 states and 18710 transitions. Word has length 137 [2022-03-03 17:47:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:31,169 INFO L470 AbstractCegarLoop]: Abstraction has 6728 states and 18710 transitions. [2022-03-03 17:47:31,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.6597938144329896) internal successors, (355), 97 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6728 states and 18710 transitions. [2022-03-03 17:47:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-03 17:47:31,177 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:31,178 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:31,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:31,394 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 [2022-03-03 17:47:31,395 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1261442660, now seen corresponding path program 38 times [2022-03-03 17:47:31,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:31,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791581924] [2022-03-03 17:47:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:32,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:32,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791581924] [2022-03-03 17:47:32,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791581924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:32,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149958127] [2022-03-03 17:47:32,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:47:32,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:32,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:32,943 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) [2022-03-03 17:47:32,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:47:33,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:47:33,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:33,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-03 17:47:33,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:47:34,172 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 [2022-03-03 17:47:34,306 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 25 treesize of output 7 [2022-03-03 17:47:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:34,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:35,118 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:47:35,119 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 111 treesize of output 95 [2022-03-03 17:47:35,122 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 67 treesize of output 49 [2022-03-03 17:47:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:36,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149958127] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:36,804 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:36,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 93 [2022-03-03 17:47:36,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910807407] [2022-03-03 17:47:36,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:36,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-03-03 17:47:36,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:36,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-03-03 17:47:36,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=8019, Unknown=2, NotChecked=0, Total=8556 [2022-03-03 17:47:36,806 INFO L87 Difference]: Start difference. First operand 6728 states and 18710 transitions. Second operand has 93 states, 93 states have (on average 3.5161290322580645) internal successors, (327), 93 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:43,643 INFO L93 Difference]: Finished difference Result 10196 states and 28016 transitions. [2022-03-03 17:47:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-03 17:47:43,643 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.5161290322580645) internal successors, (327), 93 states have internal predecessors, (327), 0 states have call successors, (0), 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 137 [2022-03-03 17:47:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:43,658 INFO L225 Difference]: With dead ends: 10196 [2022-03-03 17:47:43,659 INFO L226 Difference]: Without dead ends: 9936 [2022-03-03 17:47:43,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 213 SyntacticMatches, 7 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8561 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2438, Invalid=25274, Unknown=10, NotChecked=0, Total=27722 [2022-03-03 17:47:43,660 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 2221 mSDsluCounter, 7143 mSDsCounter, 0 mSdLazyCounter, 4401 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 6804 SdHoareTripleChecker+Invalid, 4769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:43,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 6804 Invalid, 4769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 4401 Invalid, 0 Unknown, 205 Unchecked, 1.7s Time] [2022-03-03 17:47:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9936 states. [2022-03-03 17:47:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9936 to 6656. [2022-03-03 17:47:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 2.7833208114199848) internal successors, (18523), 6655 states have internal predecessors, (18523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 18523 transitions. [2022-03-03 17:47:43,775 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 18523 transitions. Word has length 137 [2022-03-03 17:47:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:43,775 INFO L470 AbstractCegarLoop]: Abstraction has 6656 states and 18523 transitions. [2022-03-03 17:47:43,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.5161290322580645) internal successors, (327), 93 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 18523 transitions. [2022-03-03 17:47:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-03 17:47:43,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:43,782 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:43,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-03 17:47:44,001 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 [2022-03-03 17:47:44,001 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:44,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2092513632, now seen corresponding path program 39 times [2022-03-03 17:47:44,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:44,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259945119] [2022-03-03 17:47:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:44,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:45,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:45,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259945119] [2022-03-03 17:47:45,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259945119] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:45,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264851905] [2022-03-03 17:47:45,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:47:45,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:45,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:45,167 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) [2022-03-03 17:47:45,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:47:45,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:47:45,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:45,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-03 17:47:45,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:45,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:47:45,457 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:47:45,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:47:45,828 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 [2022-03-03 17:47:45,887 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 [2022-03-03 17:47:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:47:46,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:46,615 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:47:46,615 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 111 treesize of output 95 [2022-03-03 17:47:46,618 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 67 treesize of output 49 [2022-03-03 17:47:47,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:47:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:47:47,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264851905] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:47,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:47,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 23, 23] total 66 [2022-03-03 17:47:47,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200300158] [2022-03-03 17:47:47,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:47,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-03 17:47:47,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-03 17:47:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=4029, Unknown=3, NotChecked=0, Total=4290 [2022-03-03 17:47:47,448 INFO L87 Difference]: Start difference. First operand 6656 states and 18523 transitions. Second operand has 66 states, 66 states have (on average 4.287878787878788) internal successors, (283), 66 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:51,070 INFO L93 Difference]: Finished difference Result 9920 states and 27359 transitions. [2022-03-03 17:47:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:47:51,071 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.287878787878788) internal successors, (283), 66 states have internal predecessors, (283), 0 states have call successors, (0), 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 137 [2022-03-03 17:47:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:51,086 INFO L225 Difference]: With dead ends: 9920 [2022-03-03 17:47:51,086 INFO L226 Difference]: Without dead ends: 9782 [2022-03-03 17:47:51,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 250 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4400 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1570, Invalid=14177, Unknown=3, NotChecked=0, Total=15750 [2022-03-03 17:47:51,087 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1982 mSDsluCounter, 5323 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 5045 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:51,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 5045 Invalid, 3119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2816 Invalid, 0 Unknown, 209 Unchecked, 1.0s Time] [2022-03-03 17:47:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2022-03-03 17:47:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 6606. [2022-03-03 17:47:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6606 states, 6605 states have (on average 2.7847085541256624) internal successors, (18393), 6605 states have internal predecessors, (18393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 18393 transitions. [2022-03-03 17:47:51,188 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 18393 transitions. Word has length 137 [2022-03-03 17:47:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:51,188 INFO L470 AbstractCegarLoop]: Abstraction has 6606 states and 18393 transitions. [2022-03-03 17:47:51,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.287878787878788) internal successors, (283), 66 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:47:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 18393 transitions. [2022-03-03 17:47:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:47:51,195 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:51,196 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:51,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:51,411 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 [2022-03-03 17:47:51,414 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:51,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1523455396, now seen corresponding path program 40 times [2022-03-03 17:47:51,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:51,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283868793] [2022-03-03 17:47:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:53,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:53,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283868793] [2022-03-03 17:47:53,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283868793] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:53,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951354783] [2022-03-03 17:47:53,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:47:53,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:53,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:53,326 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) [2022-03-03 17:47:53,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:47:53,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:47:53,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:53,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-03 17:47:53,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:53,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:47:53,753 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:47:53,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:47:55,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:47:55,615 INFO L353 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-03-03 17:47:55,615 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 48 treesize of output 27 [2022-03-03 17:47:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:55,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:57,529 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:47:57,529 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 169 treesize of output 162 [2022-03-03 17:47:57,536 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:47:57,536 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 94 treesize of output 61 [2022-03-03 17:48:01,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:48:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:01,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951354783] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:01,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:01,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 39, 39] total 111 [2022-03-03 17:48:01,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554082666] [2022-03-03 17:48:01,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:01,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-03-03 17:48:01,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-03-03 17:48:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=914, Invalid=11273, Unknown=23, NotChecked=0, Total=12210 [2022-03-03 17:48:01,183 INFO L87 Difference]: Start difference. First operand 6606 states and 18393 transitions. Second operand has 111 states, 111 states have (on average 3.279279279279279) internal successors, (364), 111 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:10,668 INFO L93 Difference]: Finished difference Result 7856 states and 21550 transitions. [2022-03-03 17:48:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-03 17:48:10,669 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 3.279279279279279) internal successors, (364), 111 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-03-03 17:48:10,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:10,682 INFO L225 Difference]: With dead ends: 7856 [2022-03-03 17:48:10,682 INFO L226 Difference]: Without dead ends: 7607 [2022-03-03 17:48:10,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 228 SyntacticMatches, 5 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8266 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2429, Invalid=28690, Unknown=33, NotChecked=0, Total=31152 [2022-03-03 17:48:10,684 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2880 mSDsluCounter, 10084 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2880 SdHoareTripleChecker+Valid, 9581 SdHoareTripleChecker+Invalid, 6834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3193 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:10,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2880 Valid, 9581 Invalid, 6834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3402 Invalid, 0 Unknown, 3193 Unchecked, 1.5s Time] [2022-03-03 17:48:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2022-03-03 17:48:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 6740. [2022-03-03 17:48:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6740 states, 6739 states have (on average 2.784537765247069) internal successors, (18765), 6739 states have internal predecessors, (18765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6740 states to 6740 states and 18765 transitions. [2022-03-03 17:48:10,790 INFO L78 Accepts]: Start accepts. Automaton has 6740 states and 18765 transitions. Word has length 139 [2022-03-03 17:48:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:10,790 INFO L470 AbstractCegarLoop]: Abstraction has 6740 states and 18765 transitions. [2022-03-03 17:48:10,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 3.279279279279279) internal successors, (364), 111 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6740 states and 18765 transitions. [2022-03-03 17:48:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:48:10,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:10,799 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:10,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:11,019 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 [2022-03-03 17:48:11,020 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -286390406, now seen corresponding path program 41 times [2022-03-03 17:48:11,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:11,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221893047] [2022-03-03 17:48:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:11,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:12,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:12,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221893047] [2022-03-03 17:48:12,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221893047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:12,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355696066] [2022-03-03 17:48:12,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:48:12,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:12,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:12,255 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) [2022-03-03 17:48:12,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 17:48:12,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:48:12,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:12,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 108 conjunts are in the unsatisfiable core [2022-03-03 17:48:12,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:12,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:48:12,439 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:48:12,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-03 17:48:12,706 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-03-03 17:48:12,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-03-03 17:48:12,849 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-03-03 17:48:12,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-03-03 17:48:13,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-03-03 17:48:13,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:48:14,106 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 30 treesize of output 30 [2022-03-03 17:48:14,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:48:14,508 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:48:14,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 13 [2022-03-03 17:48:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:14,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:19,731 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-03 17:48:19,732 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 3 case distinctions, treesize of input 317 treesize of output 159 [2022-03-03 17:48:19,771 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:48:19,771 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 681 treesize of output 630 [2022-03-03 17:48:19,807 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:48:19,807 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 578 treesize of output 551 [2022-03-03 17:48:19,863 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:48:19,864 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 463 treesize of output 331 [2022-03-03 17:48:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:23,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355696066] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:23,356 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:23,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 44] total 115 [2022-03-03 17:48:23,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617787221] [2022-03-03 17:48:23,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:23,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-03-03 17:48:23,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-03-03 17:48:23,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1318, Invalid=11742, Unknown=50, NotChecked=0, Total=13110 [2022-03-03 17:48:23,358 INFO L87 Difference]: Start difference. First operand 6740 states and 18765 transitions. Second operand has 115 states, 115 states have (on average 3.1739130434782608) internal successors, (365), 115 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:45,507 INFO L93 Difference]: Finished difference Result 9292 states and 25053 transitions. [2022-03-03 17:48:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-03 17:48:45,507 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 3.1739130434782608) internal successors, (365), 115 states have internal predecessors, (365), 0 states have call successors, (0), 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 139 [2022-03-03 17:48:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:45,519 INFO L225 Difference]: With dead ends: 9292 [2022-03-03 17:48:45,519 INFO L226 Difference]: Without dead ends: 8669 [2022-03-03 17:48:45,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 228 SyntacticMatches, 44 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20926 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=5307, Invalid=45450, Unknown=93, NotChecked=0, Total=50850 [2022-03-03 17:48:45,521 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 5461 mSDsluCounter, 11878 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5461 SdHoareTripleChecker+Valid, 10610 SdHoareTripleChecker+Invalid, 10827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5703 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:45,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5461 Valid, 10610 Invalid, 10827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 4807 Invalid, 0 Unknown, 5703 Unchecked, 1.9s Time] [2022-03-03 17:48:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2022-03-03 17:48:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 6887. [2022-03-03 17:48:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 6886 states have (on average 2.784199825733372) internal successors, (19172), 6886 states have internal predecessors, (19172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 19172 transitions. [2022-03-03 17:48:45,622 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 19172 transitions. Word has length 139 [2022-03-03 17:48:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:45,622 INFO L470 AbstractCegarLoop]: Abstraction has 6887 states and 19172 transitions. [2022-03-03 17:48:45,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 3.1739130434782608) internal successors, (365), 115 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:48:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 19172 transitions. [2022-03-03 17:48:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:48:45,630 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:45,630 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:48:45,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-03 17:48:45,851 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 [2022-03-03 17:48:45,851 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash -774168868, now seen corresponding path program 42 times [2022-03-03 17:48:45,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:45,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046510471] [2022-03-03 17:48:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:45,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:47,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:47,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046510471] [2022-03-03 17:48:47,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046510471] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:47,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626591995] [2022-03-03 17:48:47,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:48:47,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:47,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:47,648 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) [2022-03-03 17:48:47,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 17:48:47,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:48:47,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:47,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-03 17:48:47,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:49,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:48:49,503 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 30 treesize of output 30 [2022-03-03 17:48:50,263 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-03-03 17:48:50,263 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 46 treesize of output 53 [2022-03-03 17:48:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:50,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:53,739 INFO L353 Elim1Store]: treesize reduction 60, result has 38.1 percent of original size [2022-03-03 17:48:53,740 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 163 treesize of output 143 [2022-03-03 17:48:53,747 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-03 17:48:53,748 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 91 treesize of output 61 [2022-03-03 17:48:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:57,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626591995] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:57,089 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:57,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 40, 40] total 113 [2022-03-03 17:48:57,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148905009] [2022-03-03 17:48:57,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:57,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-03-03 17:48:57,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-03-03 17:48:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=851, Invalid=11801, Unknown=4, NotChecked=0, Total=12656 [2022-03-03 17:48:57,091 INFO L87 Difference]: Start difference. First operand 6887 states and 19172 transitions. Second operand has 113 states, 113 states have (on average 3.2212389380530975) internal successors, (364), 113 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:06,962 INFO L93 Difference]: Finished difference Result 10068 states and 27584 transitions. [2022-03-03 17:49:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 17:49:06,962 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.2212389380530975) internal successors, (364), 113 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-03-03 17:49:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:06,977 INFO L225 Difference]: With dead ends: 10068 [2022-03-03 17:49:06,977 INFO L226 Difference]: Without dead ends: 9729 [2022-03-03 17:49:06,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 221 SyntacticMatches, 16 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10286 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=3213, Invalid=29363, Unknown=4, NotChecked=0, Total=32580 [2022-03-03 17:49:06,979 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 5070 mSDsluCounter, 11062 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5070 SdHoareTripleChecker+Valid, 9991 SdHoareTripleChecker+Invalid, 6367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3194 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:06,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5070 Valid, 9991 Invalid, 6367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 2976 Invalid, 0 Unknown, 3194 Unchecked, 1.3s Time] [2022-03-03 17:49:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2022-03-03 17:49:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 7092. [2022-03-03 17:49:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 7091 states have (on average 2.779015653645466) internal successors, (19706), 7091 states have internal predecessors, (19706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 19706 transitions. [2022-03-03 17:49:07,163 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 19706 transitions. Word has length 139 [2022-03-03 17:49:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:07,164 INFO L470 AbstractCegarLoop]: Abstraction has 7092 states and 19706 transitions. [2022-03-03 17:49:07,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.2212389380530975) internal successors, (364), 113 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 19706 transitions. [2022-03-03 17:49:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:49:07,173 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:07,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:07,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:07,378 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 [2022-03-03 17:49:07,379 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash 895450302, now seen corresponding path program 43 times [2022-03-03 17:49:07,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:07,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883751188] [2022-03-03 17:49:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:09,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:09,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883751188] [2022-03-03 17:49:09,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883751188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:09,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365106252] [2022-03-03 17:49:09,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:49:09,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:09,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:09,086 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) [2022-03-03 17:49:09,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 17:49:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:09,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-03 17:49:09,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:09,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:49:09,285 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-03 17:49:09,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-03-03 17:49:09,681 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:49:09,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-03-03 17:49:09,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:49:10,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:49:10,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:49:10,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-03-03 17:49:11,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:49:11,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:49:12,123 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-03-03 17:49:12,124 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 47 treesize of output 16 [2022-03-03 17:49:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:12,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:33,150 INFO L353 Elim1Store]: treesize reduction 96, result has 39.6 percent of original size [2022-03-03 17:49:33,150 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 3 case distinctions, treesize of input 345 treesize of output 199 [2022-03-03 17:49:33,267 INFO L353 Elim1Store]: treesize reduction 81, result has 67.1 percent of original size [2022-03-03 17:49:33,268 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 874 treesize of output 904 [2022-03-03 17:49:33,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:49:33,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:49:33,318 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:33,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 575 treesize of output 551 [2022-03-03 17:49:33,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:49:33,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 580 treesize of output 424 [2022-03-03 17:49:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:42,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365106252] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:42,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:42,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42, 45] total 117 [2022-03-03 17:49:42,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602404760] [2022-03-03 17:49:42,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:42,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-03-03 17:49:42,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-03-03 17:49:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1100, Invalid=12388, Unknown=84, NotChecked=0, Total=13572 [2022-03-03 17:49:42,284 INFO L87 Difference]: Start difference. First operand 7092 states and 19706 transitions. Second operand has 117 states, 117 states have (on average 3.0854700854700856) internal successors, (361), 117 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:52,354 INFO L93 Difference]: Finished difference Result 9714 states and 26713 transitions. [2022-03-03 17:49:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:49:52,355 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 3.0854700854700856) internal successors, (361), 117 states have internal predecessors, (361), 0 states have call successors, (0), 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 139 [2022-03-03 17:49:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:52,370 INFO L225 Difference]: With dead ends: 9714 [2022-03-03 17:49:52,370 INFO L226 Difference]: Without dead ends: 9444 [2022-03-03 17:49:52,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 225 SyntacticMatches, 18 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11305 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=2520, Invalid=30301, Unknown=121, NotChecked=0, Total=32942 [2022-03-03 17:49:52,372 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 2476 mSDsluCounter, 11646 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 11312 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2316 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:52,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2476 Valid, 11312 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1873 Invalid, 0 Unknown, 2316 Unchecked, 0.7s Time] [2022-03-03 17:49:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9444 states. [2022-03-03 17:49:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9444 to 7240. [2022-03-03 17:49:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 7239 states have (on average 2.784362481005664) internal successors, (20156), 7239 states have internal predecessors, (20156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 20156 transitions. [2022-03-03 17:49:52,498 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 20156 transitions. Word has length 139 [2022-03-03 17:49:52,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:52,498 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 20156 transitions. [2022-03-03 17:49:52,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 3.0854700854700856) internal successors, (361), 117 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 20156 transitions. [2022-03-03 17:49:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:49:52,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:52,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:52,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:52,723 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 [2022-03-03 17:49:52,723 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:52,724 INFO L85 PathProgramCache]: Analyzing trace with hash -447564780, now seen corresponding path program 44 times [2022-03-03 17:49:52,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:52,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816908715] [2022-03-03 17:49:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:54,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:54,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816908715] [2022-03-03 17:49:54,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816908715] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:54,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592778297] [2022-03-03 17:49:54,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:49:54,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:54,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:54,637 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) [2022-03-03 17:49:54,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 17:49:54,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:49:54,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:54,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 94 conjunts are in the unsatisfiable core [2022-03-03 17:49:54,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:55,586 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 [2022-03-03 17:49:55,782 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 [2022-03-03 17:49:56,298 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 [2022-03-03 17:49:57,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:49:57,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:49:58,428 INFO L353 Elim1Store]: treesize reduction 96, result has 6.8 percent of original size [2022-03-03 17:49:58,428 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 47 treesize of output 19 [2022-03-03 17:49:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:58,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:59,520 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1623 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1623 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (<= c_~n~0 (+ c_~q_front~0 2)) (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< c_~q_front~0 0)) is different from false [2022-03-03 17:49:59,591 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1623 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1623 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (<= c_~n~0 (+ c_~q_front~0 2)) (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0) (< c_~q_front~0 0)) is different from false [2022-03-03 17:49:59,625 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1623 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1623 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (<= c_~n~0 (+ c_~q_front~0 2)) (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0) (< c_~q_front~0 0)) is different from false [2022-03-03 17:49:59,644 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1623 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1623 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1623) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (<= c_~n~0 (+ c_~q_front~0 2)) (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (< c_~q_front~0 0)) is different from false [2022-03-03 17:50:05,321 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-03-03 17:50:05,321 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 2 case distinctions, treesize of input 222 treesize of output 127 [2022-03-03 17:50:05,428 INFO L353 Elim1Store]: treesize reduction 94, result has 62.5 percent of original size [2022-03-03 17:50:05,428 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 551 treesize of output 606 [2022-03-03 17:50:05,475 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:50:05,475 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 606 treesize of output 594 [2022-03-03 17:50:05,499 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:50:05,499 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 341 treesize of output 289 [2022-03-03 17:50:05,517 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:50:05,518 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 289 treesize of output 237 [2022-03-03 17:50:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 37 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2022-03-03 17:50:12,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592778297] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:12,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:12,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 41, 42] total 116 [2022-03-03 17:50:12,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948104683] [2022-03-03 17:50:12,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:12,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-03-03 17:50:12,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-03-03 17:50:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=945, Invalid=11448, Unknown=55, NotChecked=892, Total=13340 [2022-03-03 17:50:12,640 INFO L87 Difference]: Start difference. First operand 7240 states and 20156 transitions. Second operand has 116 states, 116 states have (on average 3.1379310344827585) internal successors, (364), 116 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:26,178 INFO L93 Difference]: Finished difference Result 10918 states and 29837 transitions. [2022-03-03 17:50:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-03 17:50:26,179 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 3.1379310344827585) internal successors, (364), 116 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-03-03 17:50:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:26,192 INFO L225 Difference]: With dead ends: 10918 [2022-03-03 17:50:26,192 INFO L226 Difference]: Without dead ends: 10874 [2022-03-03 17:50:26,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 233 SyntacticMatches, 24 SemanticMatches, 197 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 11878 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=3903, Invalid=33879, Unknown=64, NotChecked=1556, Total=39402 [2022-03-03 17:50:26,195 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 4155 mSDsluCounter, 13263 mSDsCounter, 0 mSdLazyCounter, 3498 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 12714 SdHoareTripleChecker+Invalid, 7699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3988 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:26,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4155 Valid, 12714 Invalid, 7699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3498 Invalid, 0 Unknown, 3988 Unchecked, 1.6s Time] [2022-03-03 17:50:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2022-03-03 17:50:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 7669. [2022-03-03 17:50:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7669 states, 7668 states have (on average 2.769040166927491) internal successors, (21233), 7668 states have internal predecessors, (21233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7669 states to 7669 states and 21233 transitions. [2022-03-03 17:50:26,311 INFO L78 Accepts]: Start accepts. Automaton has 7669 states and 21233 transitions. Word has length 139 [2022-03-03 17:50:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:26,312 INFO L470 AbstractCegarLoop]: Abstraction has 7669 states and 21233 transitions. [2022-03-03 17:50:26,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 3.1379310344827585) internal successors, (364), 116 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7669 states and 21233 transitions. [2022-03-03 17:50:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:50:26,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:26,321 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:26,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:26,524 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 [2022-03-03 17:50:26,524 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1566198338, now seen corresponding path program 45 times [2022-03-03 17:50:26,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:26,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675768065] [2022-03-03 17:50:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:28,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:28,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675768065] [2022-03-03 17:50:28,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675768065] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:28,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997173795] [2022-03-03 17:50:28,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:50:28,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:28,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:28,486 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) [2022-03-03 17:50:28,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 17:50:28,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:50:28,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:28,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-03 17:50:28,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:29,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:50:29,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:50:30,399 INFO L353 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2022-03-03 17:50:30,399 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 45 treesize of output 25 [2022-03-03 17:50:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:50:30,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:32,483 INFO L353 Elim1Store]: treesize reduction 60, result has 38.1 percent of original size [2022-03-03 17:50:32,484 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 134 treesize of output 122 [2022-03-03 17:50:32,491 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-03 17:50:32,491 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 77 treesize of output 65 [2022-03-03 17:50:32,497 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-03 17:50:32,497 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 65 treesize of output 53 [2022-03-03 17:50:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:50:33,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997173795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:33,959 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:33,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 29, 29] total 93 [2022-03-03 17:50:33,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947705750] [2022-03-03 17:50:33,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:33,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-03-03 17:50:33,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:33,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-03-03 17:50:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=7868, Unknown=5, NotChecked=0, Total=8556 [2022-03-03 17:50:33,960 INFO L87 Difference]: Start difference. First operand 7669 states and 21233 transitions. Second operand has 93 states, 93 states have (on average 3.6129032258064515) internal successors, (336), 93 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:48,711 INFO L93 Difference]: Finished difference Result 11181 states and 29588 transitions. [2022-03-03 17:50:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-03 17:50:48,711 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.6129032258064515) internal successors, (336), 93 states have internal predecessors, (336), 0 states have call successors, (0), 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 139 [2022-03-03 17:50:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:48,727 INFO L225 Difference]: With dead ends: 11181 [2022-03-03 17:50:48,727 INFO L226 Difference]: Without dead ends: 11142 [2022-03-03 17:50:48,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 279 SyntacticMatches, 12 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14740 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=3883, Invalid=40833, Unknown=16, NotChecked=0, Total=44732 [2022-03-03 17:50:48,730 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 2894 mSDsluCounter, 10433 mSDsCounter, 0 mSdLazyCounter, 3076 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 10466 SdHoareTripleChecker+Invalid, 5308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2110 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:48,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2894 Valid, 10466 Invalid, 5308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3076 Invalid, 0 Unknown, 2110 Unchecked, 1.4s Time] [2022-03-03 17:50:48,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11142 states. [2022-03-03 17:50:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11142 to 8507. [2022-03-03 17:50:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 8506 states have (on average 2.736421349635551) internal successors, (23276), 8506 states have internal predecessors, (23276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 23276 transitions. [2022-03-03 17:50:48,867 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 23276 transitions. Word has length 139 [2022-03-03 17:50:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:48,867 INFO L470 AbstractCegarLoop]: Abstraction has 8507 states and 23276 transitions. [2022-03-03 17:50:48,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.6129032258064515) internal successors, (336), 93 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 23276 transitions. [2022-03-03 17:50:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:50:48,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:48,878 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:48,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:49,094 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 [2022-03-03 17:50:49,097 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:49,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1025912262, now seen corresponding path program 46 times [2022-03-03 17:50:49,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:49,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289056774] [2022-03-03 17:50:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:49,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:50,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:50,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289056774] [2022-03-03 17:50:50,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289056774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:50,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788025445] [2022-03-03 17:50:50,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:50:50,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:50,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:50,579 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) [2022-03-03 17:50:50,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 17:50:50,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:50:50,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:50,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 94 conjunts are in the unsatisfiable core [2022-03-03 17:50:50,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:51,360 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 [2022-03-03 17:50:51,577 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 [2022-03-03 17:50:51,822 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 [2022-03-03 17:50:52,313 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 [2022-03-03 17:50:53,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:50:53,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:50:53,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:50:53,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:50:53,806 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:50:53,806 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 41 treesize of output 16 [2022-03-03 17:50:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:53,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:03,302 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-03 17:51:03,302 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 3 case distinctions, treesize of input 315 treesize of output 157 [2022-03-03 17:51:03,334 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:51:03,334 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 671 treesize of output 623 [2022-03-03 17:51:03,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:51:03,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:51:03,354 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:51:03,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 507 treesize of output 497 [2022-03-03 17:51:03,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:51:03,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 459 treesize of output 331 [2022-03-03 17:51:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:05,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788025445] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:05,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:05,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 43] total 113 [2022-03-03 17:51:05,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334725929] [2022-03-03 17:51:05,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:05,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-03-03 17:51:05,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-03-03 17:51:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1004, Invalid=11594, Unknown=58, NotChecked=0, Total=12656 [2022-03-03 17:51:05,663 INFO L87 Difference]: Start difference. First operand 8507 states and 23276 transitions. Second operand has 113 states, 113 states have (on average 3.185840707964602) internal successors, (360), 113 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:08,996 INFO L93 Difference]: Finished difference Result 11342 states and 30378 transitions. [2022-03-03 17:51:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:51:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.185840707964602) internal successors, (360), 113 states have internal predecessors, (360), 0 states have call successors, (0), 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 139 [2022-03-03 17:51:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:09,013 INFO L225 Difference]: With dead ends: 11342 [2022-03-03 17:51:09,013 INFO L226 Difference]: Without dead ends: 11240 [2022-03-03 17:51:09,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 213 SyntacticMatches, 9 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8576 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1961, Invalid=21235, Unknown=60, NotChecked=0, Total=23256 [2022-03-03 17:51:09,014 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1852 mSDsluCounter, 9011 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 8519 SdHoareTripleChecker+Invalid, 4441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1620 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:09,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 8519 Invalid, 4441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2742 Invalid, 0 Unknown, 1620 Unchecked, 1.1s Time] [2022-03-03 17:51:09,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2022-03-03 17:51:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 9269. [2022-03-03 17:51:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9269 states, 9268 states have (on average 2.733491583944756) internal successors, (25334), 9268 states have internal predecessors, (25334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9269 states to 9269 states and 25334 transitions. [2022-03-03 17:51:09,148 INFO L78 Accepts]: Start accepts. Automaton has 9269 states and 25334 transitions. Word has length 139 [2022-03-03 17:51:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:09,148 INFO L470 AbstractCegarLoop]: Abstraction has 9269 states and 25334 transitions. [2022-03-03 17:51:09,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.185840707964602) internal successors, (360), 113 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9269 states and 25334 transitions. [2022-03-03 17:51:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:51:09,158 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:09,159 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:09,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:09,375 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 [2022-03-03 17:51:09,375 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:09,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash -525308866, now seen corresponding path program 47 times [2022-03-03 17:51:09,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:09,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845471694] [2022-03-03 17:51:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:09,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:11,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:11,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845471694] [2022-03-03 17:51:11,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845471694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:11,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717629388] [2022-03-03 17:51:11,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:51:11,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:11,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:11,242 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) [2022-03-03 17:51:11,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 17:51:11,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:51:11,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:11,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-03 17:51:11,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:11,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:51:11,718 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:51:11,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:51:13,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:51:14,209 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-03-03 17:51:14,210 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 46 treesize of output 19 [2022-03-03 17:51:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:14,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:14,840 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (and (forall ((v_ArrVal_1730 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1730 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ (select .cse2 (+ .cse3 c_~q~0.offset 4)) c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset))))))) (< c_~q_front~0 0) (<= c_~n~0 c_~q_front~0)) is different from false [2022-03-03 17:51:14,912 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0) (and (forall ((v_ArrVal_1730 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1730 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ (select .cse2 (+ .cse3 c_~q~0.offset 4)) c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset))))))) (< c_~q_front~0 0) (<= c_~n~0 c_~q_front~0)) is different from false [2022-03-03 17:51:14,946 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0) (and (forall ((v_ArrVal_1730 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1730 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ (select .cse2 (+ .cse3 c_~q~0.offset 4)) c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset))))))) (< c_~q_front~0 0) (<= c_~n~0 c_~q_front~0)) is different from false [2022-03-03 17:51:14,965 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (and (forall ((v_ArrVal_1730 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1730 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1730) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ (select .cse2 (+ .cse3 c_~q~0.offset 4)) c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset))))))) (< c_~q_front~0 0) (<= c_~n~0 c_~q_front~0)) is different from false [2022-03-03 17:51:15,400 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:51:15,401 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 138 treesize of output 140 [2022-03-03 17:51:15,408 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:51:15,408 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 79 treesize of output 66 [2022-03-03 17:51:15,414 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:51:15,414 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 66 treesize of output 53 [2022-03-03 17:51:19,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:51:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 37 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2022-03-03 17:51:19,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717629388] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:19,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:19,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 106 [2022-03-03 17:51:19,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28284543] [2022-03-03 17:51:19,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:19,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-03-03 17:51:19,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:19,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-03-03 17:51:19,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=9527, Unknown=51, NotChecked=812, Total=11130 [2022-03-03 17:51:19,322 INFO L87 Difference]: Start difference. First operand 9269 states and 25334 transitions. Second operand has 106 states, 106 states have (on average 3.4245283018867925) internal successors, (363), 106 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:23,646 INFO L93 Difference]: Finished difference Result 12139 states and 32829 transitions. [2022-03-03 17:51:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:51:23,646 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.4245283018867925) internal successors, (363), 106 states have internal predecessors, (363), 0 states have call successors, (0), 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 139 [2022-03-03 17:51:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:23,665 INFO L225 Difference]: With dead ends: 12139 [2022-03-03 17:51:23,665 INFO L226 Difference]: Without dead ends: 12130 [2022-03-03 17:51:23,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 224 SyntacticMatches, 14 SemanticMatches, 153 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 7554 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1967, Invalid=20648, Unknown=51, NotChecked=1204, Total=23870 [2022-03-03 17:51:23,667 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 2119 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 8746 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2257 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:23,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2119 Valid, 8746 Invalid, 3956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1623 Invalid, 0 Unknown, 2257 Unchecked, 0.6s Time] [2022-03-03 17:51:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12130 states. [2022-03-03 17:51:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12130 to 9610. [2022-03-03 17:51:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 9609 states have (on average 2.7272348839629514) internal successors, (26206), 9609 states have internal predecessors, (26206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 26206 transitions. [2022-03-03 17:51:23,828 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 26206 transitions. Word has length 139 [2022-03-03 17:51:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:23,828 INFO L470 AbstractCegarLoop]: Abstraction has 9610 states and 26206 transitions. [2022-03-03 17:51:23,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.4245283018867925) internal successors, (363), 106 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 26206 transitions. [2022-03-03 17:51:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:51:23,840 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:23,840 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:23,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:24,055 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 [2022-03-03 17:51:24,056 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1319430256, now seen corresponding path program 48 times [2022-03-03 17:51:24,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:24,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193208036] [2022-03-03 17:51:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:24,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:25,885 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:25,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193208036] [2022-03-03 17:51:25,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193208036] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:25,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948963127] [2022-03-03 17:51:25,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:51:25,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:25,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:25,888 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) [2022-03-03 17:51:25,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 17:51:26,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:51:26,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:26,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-03 17:51:26,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:28,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:51:28,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:51:28,915 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-03-03 17:51:28,916 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 47 treesize of output 16 [2022-03-03 17:51:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:29,480 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1763 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) is different from false [2022-03-03 17:51:29,501 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1763 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))))))) is different from false [2022-03-03 17:51:29,551 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1763 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) is different from false [2022-03-03 17:51:29,577 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0) (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1763 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))))))) is different from false [2022-03-03 17:51:29,592 WARN L838 $PredicateComparison]: unable to prove that (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1763 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0)) is different from false [2022-03-03 17:51:29,611 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) c_~N~0)) (forall ((v_ArrVal_1763 (Array Int Int))) (<= c_~N~0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (<= c_~n~0 0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:51:29,633 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1))) (forall ((v_ArrVal_1763 (Array Int Int))) (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset))))))) (<= c_~n~0 0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:51:29,661 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (+ 2 |c_thread1Thread1of1ForFork1_#t~post1#1|) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) (+ 2 |c_thread1Thread1of1ForFork1_#t~post1#1|)))) (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (<= c_~n~0 0) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:51:29,678 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (<= c_~n~0 0) (and (forall ((v_ArrVal_1763 (Array Int Int))) (<= (+ 2 |c_thread1Thread1of1ForFork1_~i~0#1|) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1763 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1763) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) (+ 2 |c_thread1Thread1of1ForFork1_~i~0#1|)))) (<= c_~n~0 (+ c_~q_back~0 1))) is different from false [2022-03-03 17:51:29,723 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:51:29,724 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 138 treesize of output 140 [2022-03-03 17:51:29,731 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:51:29,731 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 79 treesize of output 66 [2022-03-03 17:51:29,737 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:51:29,737 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 66 treesize of output 53 [2022-03-03 17:51:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-03-03 17:51:32,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948963127] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:32,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:32,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 38, 38] total 111 [2022-03-03 17:51:32,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909120385] [2022-03-03 17:51:32,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:32,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-03-03 17:51:32,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-03-03 17:51:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=9680, Unknown=9, NotChecked=1872, Total=12210 [2022-03-03 17:51:32,897 INFO L87 Difference]: Start difference. First operand 9610 states and 26206 transitions. Second operand has 111 states, 111 states have (on average 3.279279279279279) internal successors, (364), 111 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:50,371 INFO L93 Difference]: Finished difference Result 14031 states and 37726 transitions. [2022-03-03 17:51:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-03 17:51:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 3.279279279279279) internal successors, (364), 111 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-03-03 17:51:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:50,418 INFO L225 Difference]: With dead ends: 14031 [2022-03-03 17:51:50,419 INFO L226 Difference]: Without dead ends: 13797 [2022-03-03 17:51:50,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 214 SyntacticMatches, 18 SemanticMatches, 215 ConstructedPredicates, 9 IntricatePredicates, 2 DeprecatedPredicates, 13388 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=3655, Invalid=39428, Unknown=9, NotChecked=3780, Total=46872 [2022-03-03 17:51:50,421 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 2779 mSDsluCounter, 12625 mSDsCounter, 0 mSdLazyCounter, 6035 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 11867 SdHoareTripleChecker+Invalid, 9774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 6035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3300 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:50,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2779 Valid, 11867 Invalid, 9774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 6035 Invalid, 0 Unknown, 3300 Unchecked, 3.0s Time] [2022-03-03 17:51:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13797 states. [2022-03-03 17:51:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13797 to 9397. [2022-03-03 17:51:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9397 states, 9396 states have (on average 2.73690932311622) internal successors, (25716), 9396 states have internal predecessors, (25716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 25716 transitions. [2022-03-03 17:51:50,610 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 25716 transitions. Word has length 139 [2022-03-03 17:51:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:50,610 INFO L470 AbstractCegarLoop]: Abstraction has 9397 states and 25716 transitions. [2022-03-03 17:51:50,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 3.279279279279279) internal successors, (364), 111 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 25716 transitions. [2022-03-03 17:51:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:51:50,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:50,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:50,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:50,830 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 [2022-03-03 17:51:50,830 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:50,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:50,830 INFO L85 PathProgramCache]: Analyzing trace with hash -279587042, now seen corresponding path program 49 times [2022-03-03 17:51:50,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:50,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790386745] [2022-03-03 17:51:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:50,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:52,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:52,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790386745] [2022-03-03 17:51:52,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790386745] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:52,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127723835] [2022-03-03 17:51:52,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:51:52,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:52,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:52,841 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) [2022-03-03 17:51:52,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 17:51:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:53,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-03 17:51:53,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:55,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:51:55,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:51:55,774 INFO L353 Elim1Store]: treesize reduction 39, result has 23.5 percent of original size [2022-03-03 17:51:55,774 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 47 treesize of output 25 [2022-03-03 17:51:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:56,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:58,325 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:51:58,348 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 198 treesize of output 183 [2022-03-03 17:51:58,358 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:51:58,358 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 107 treesize of output 68 [2022-03-03 17:52:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:02,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127723835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:02,321 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:02,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 40, 40] total 114 [2022-03-03 17:52:02,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340098198] [2022-03-03 17:52:02,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:02,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-03-03 17:52:02,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-03-03 17:52:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=952, Invalid=11925, Unknown=5, NotChecked=0, Total=12882 [2022-03-03 17:52:02,323 INFO L87 Difference]: Start difference. First operand 9397 states and 25716 transitions. Second operand has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:24,431 INFO L93 Difference]: Finished difference Result 28207 states and 78159 transitions. [2022-03-03 17:53:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 406 states. [2022-03-03 17:53:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-03-03 17:53:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:24,492 INFO L225 Difference]: With dead ends: 28207 [2022-03-03 17:53:24,493 INFO L226 Difference]: Without dead ends: 27643 [2022-03-03 17:53:24,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 271 SyntacticMatches, 63 SemanticMatches, 494 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101607 ImplicationChecksByTransitivity, 80.7s TimeCoverageRelationStatistics Valid=22317, Invalid=222758, Unknown=445, NotChecked=0, Total=245520 [2022-03-03 17:53:24,502 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 5119 mSDsluCounter, 18624 mSDsCounter, 0 mSdLazyCounter, 9229 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5119 SdHoareTripleChecker+Valid, 17845 SdHoareTripleChecker+Invalid, 20262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 9229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10151 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:24,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5119 Valid, 17845 Invalid, 20262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [882 Valid, 9229 Invalid, 0 Unknown, 10151 Unchecked, 5.1s Time] [2022-03-03 17:53:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27643 states. [2022-03-03 17:53:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27643 to 12421. [2022-03-03 17:53:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12421 states, 12420 states have (on average 2.790901771336554) internal successors, (34663), 12420 states have internal predecessors, (34663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12421 states to 12421 states and 34663 transitions. [2022-03-03 17:53:24,848 INFO L78 Accepts]: Start accepts. Automaton has 12421 states and 34663 transitions. Word has length 139 [2022-03-03 17:53:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:24,848 INFO L470 AbstractCegarLoop]: Abstraction has 12421 states and 34663 transitions. [2022-03-03 17:53:24,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 12421 states and 34663 transitions. [2022-03-03 17:53:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:53:24,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:24,862 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:24,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:25,065 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 [2022-03-03 17:53:25,065 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:25,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash 957477948, now seen corresponding path program 50 times [2022-03-03 17:53:25,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:25,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933224265] [2022-03-03 17:53:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:26,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:26,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933224265] [2022-03-03 17:53:26,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933224265] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:26,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543229855] [2022-03-03 17:53:26,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:53:26,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:26,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:26,765 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) [2022-03-03 17:53:26,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 17:53:26,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:53:26,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:26,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-03 17:53:26,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:26,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:53:27,160 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:53:27,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:53:28,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-03-03 17:53:28,871 INFO L353 Elim1Store]: treesize reduction 39, result has 23.5 percent of original size [2022-03-03 17:53:28,871 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 47 treesize of output 25 [2022-03-03 17:53:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:29,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:31,001 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:53:31,001 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 169 treesize of output 162 [2022-03-03 17:53:31,009 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:53:31,009 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 94 treesize of output 61 [2022-03-03 17:53:35,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:53:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:35,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543229855] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:35,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:35,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 39, 39] total 109 [2022-03-03 17:53:35,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571247215] [2022-03-03 17:53:35,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:35,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-03-03 17:53:35,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-03-03 17:53:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=856, Invalid=10909, Unknown=7, NotChecked=0, Total=11772 [2022-03-03 17:53:35,171 INFO L87 Difference]: Start difference. First operand 12421 states and 34663 transitions. Second operand has 109 states, 109 states have (on average 3.330275229357798) internal successors, (363), 109 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:04,060 INFO L93 Difference]: Finished difference Result 20625 states and 56702 transitions. [2022-03-03 17:54:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-03 17:54:04,061 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.330275229357798) internal successors, (363), 109 states have internal predecessors, (363), 0 states have call successors, (0), 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 139 [2022-03-03 17:54:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:04,130 INFO L225 Difference]: With dead ends: 20625 [2022-03-03 17:54:04,131 INFO L226 Difference]: Without dead ends: 20256 [2022-03-03 17:54:04,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 223 SyntacticMatches, 54 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20228 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=5284, Invalid=52064, Unknown=12, NotChecked=0, Total=57360 [2022-03-03 17:54:04,132 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 4316 mSDsluCounter, 11655 mSDsCounter, 0 mSdLazyCounter, 4527 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 10917 SdHoareTripleChecker+Invalid, 9151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 4527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4228 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:04,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 10917 Invalid, 9151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 4527 Invalid, 0 Unknown, 4228 Unchecked, 2.1s Time] [2022-03-03 17:54:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20256 states. [2022-03-03 17:54:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20256 to 12644. [2022-03-03 17:54:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12644 states, 12643 states have (on average 2.7919797516412244) internal successors, (35299), 12643 states have internal predecessors, (35299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12644 states to 12644 states and 35299 transitions. [2022-03-03 17:54:04,334 INFO L78 Accepts]: Start accepts. Automaton has 12644 states and 35299 transitions. Word has length 139 [2022-03-03 17:54:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:04,334 INFO L470 AbstractCegarLoop]: Abstraction has 12644 states and 35299 transitions. [2022-03-03 17:54:04,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.330275229357798) internal successors, (363), 109 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12644 states and 35299 transitions. [2022-03-03 17:54:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:54:04,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:04,349 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:04,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:04,566 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 [2022-03-03 17:54:04,566 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash 469699486, now seen corresponding path program 51 times [2022-03-03 17:54:04,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:04,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517133628] [2022-03-03 17:54:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:04,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:06,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:06,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517133628] [2022-03-03 17:54:06,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517133628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:06,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198108942] [2022-03-03 17:54:06,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:54:06,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:06,158 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) [2022-03-03 17:54:06,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 17:54:06,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:54:06,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:06,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 17:54:06,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:06,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:54:06,615 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:54:06,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:54:07,547 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 30 treesize of output 30 [2022-03-03 17:54:07,922 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:54:07,922 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 13 [2022-03-03 17:54:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:54:08,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:09,076 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:54:09,077 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 139 treesize of output 140 [2022-03-03 17:54:09,083 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:54:09,083 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 79 treesize of output 66 [2022-03-03 17:54:09,088 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:54:09,088 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 66 treesize of output 53 [2022-03-03 17:54:09,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:54:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:54:09,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198108942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:09,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:09,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 27, 27] total 79 [2022-03-03 17:54:09,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390757553] [2022-03-03 17:54:09,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:09,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-03-03 17:54:09,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-03-03 17:54:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=5871, Unknown=5, NotChecked=0, Total=6162 [2022-03-03 17:54:09,896 INFO L87 Difference]: Start difference. First operand 12644 states and 35299 transitions. Second operand has 79 states, 79 states have (on average 3.911392405063291) internal successors, (309), 79 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:25,184 INFO L93 Difference]: Finished difference Result 18850 states and 51588 transitions. [2022-03-03 17:54:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-03 17:54:25,185 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.911392405063291) internal successors, (309), 79 states have internal predecessors, (309), 0 states have call successors, (0), 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 139 [2022-03-03 17:54:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:25,216 INFO L225 Difference]: With dead ends: 18850 [2022-03-03 17:54:25,216 INFO L226 Difference]: Without dead ends: 18111 [2022-03-03 17:54:25,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 266 SyntacticMatches, 26 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15551 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3001, Invalid=41726, Unknown=5, NotChecked=0, Total=44732 [2022-03-03 17:54:25,219 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 3275 mSDsluCounter, 12409 mSDsCounter, 0 mSdLazyCounter, 7020 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3275 SdHoareTripleChecker+Valid, 11463 SdHoareTripleChecker+Invalid, 10024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 7020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2578 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:25,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3275 Valid, 11463 Invalid, 10024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 7020 Invalid, 0 Unknown, 2578 Unchecked, 3.0s Time] [2022-03-03 17:54:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18111 states. [2022-03-03 17:54:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18111 to 12778. [2022-03-03 17:54:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12778 states, 12777 states have (on average 2.7857086953118886) internal successors, (35593), 12777 states have internal predecessors, (35593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12778 states to 12778 states and 35593 transitions. [2022-03-03 17:54:25,492 INFO L78 Accepts]: Start accepts. Automaton has 12778 states and 35593 transitions. Word has length 139 [2022-03-03 17:54:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:25,492 INFO L470 AbstractCegarLoop]: Abstraction has 12778 states and 35593 transitions. [2022-03-03 17:54:25,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.911392405063291) internal successors, (309), 79 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 12778 states and 35593 transitions. [2022-03-03 17:54:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:54:25,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:25,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:25,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:25,709 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 [2022-03-03 17:54:25,709 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1228617126, now seen corresponding path program 52 times [2022-03-03 17:54:25,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:25,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306585964] [2022-03-03 17:54:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:27,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:27,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306585964] [2022-03-03 17:54:27,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306585964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:27,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749215605] [2022-03-03 17:54:27,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:54:27,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:27,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:27,232 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) [2022-03-03 17:54:27,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 17:54:27,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:54:27,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:27,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-03 17:54:27,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:27,875 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 [2022-03-03 17:54:28,006 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 [2022-03-03 17:54:28,136 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 [2022-03-03 17:54:28,525 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 [2022-03-03 17:54:29,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:54:29,351 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 30 treesize of output 30 [2022-03-03 17:54:29,828 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-03-03 17:54:29,828 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 49 treesize of output 13 [2022-03-03 17:54:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:30,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:37,769 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-03 17:54:37,769 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 3 case distinctions, treesize of input 316 treesize of output 158 [2022-03-03 17:54:37,807 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:54:37,808 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 673 treesize of output 624 [2022-03-03 17:54:37,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:54:37,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:54:37,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:54:37,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 508 treesize of output 499 [2022-03-03 17:54:37,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:54:37,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 459 treesize of output 331 [2022-03-03 17:54:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:40,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749215605] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:40,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:40,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 43] total 114 [2022-03-03 17:54:40,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544073256] [2022-03-03 17:54:40,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:40,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-03-03 17:54:40,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:40,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-03-03 17:54:40,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1134, Invalid=11671, Unknown=77, NotChecked=0, Total=12882 [2022-03-03 17:54:40,226 INFO L87 Difference]: Start difference. First operand 12778 states and 35593 transitions. Second operand has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 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... [2022-03-03 17:55:18,231 WARN L244 SmtUtils]: Removed 18 from assertion stack [2022-03-03 17:55:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-03-03 17:55:18,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 222 SyntacticMatches, 75 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36557 ImplicationChecksByTransitivity, 40.7s TimeCoverageRelationStatistics Valid=9405, Invalid=73679, Unknown=148, NotChecked=0, Total=83232 [2022-03-03 17:55:18,234 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 5827 mSDsluCounter, 16899 mSDsCounter, 0 mSdLazyCounter, 7666 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5827 SdHoareTripleChecker+Valid, 15516 SdHoareTripleChecker+Invalid, 16113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 7666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7758 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:18,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5827 Valid, 15516 Invalid, 16113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 7666 Invalid, 0 Unknown, 7758 Unchecked, 3.8s Time] [2022-03-03 17:55:18,235 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:55:18,243 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 [2022-03-03 17:55:18,243 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:55:18,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:18,443 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 [2022-03-03 17:55:18,444 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (12778states) and FLOYD_HOARE automaton (currently 193 states, 114 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 112 for 40ms.. [2022-03-03 17:55:18,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:55:18,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:55:18,447 INFO L732 BasicCegarLoop]: Path program histogram: [52, 3, 2, 1, 1, 1] [2022-03-03 17:55:18,448 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:55:18,448 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:55:18,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:55:18 BasicIcfg [2022-03-03 17:55:18,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:55:18,450 INFO L158 Benchmark]: Toolchain (without parser) took 861963.78ms. Allocated memory was 180.4MB in the beginning and 822.1MB in the end (delta: 641.7MB). Free memory was 156.8MB in the beginning and 425.9MB in the end (delta: -269.0MB). Peak memory consumption was 372.5MB. Max. memory is 8.0GB. [2022-03-03 17:55:18,450 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:55:18,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.25ms. Allocated memory is still 180.4MB. Free memory was 156.8MB in the beginning and 152.7MB in the end (delta: 4.2MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. [2022-03-03 17:55:18,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.51ms. Allocated memory is still 180.4MB. Free memory was 152.7MB in the beginning and 150.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:55:18,450 INFO L158 Benchmark]: Boogie Preprocessor took 26.54ms. Allocated memory is still 180.4MB. Free memory was 150.8MB in the beginning and 149.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:55:18,450 INFO L158 Benchmark]: RCFGBuilder took 523.90ms. Allocated memory is still 180.4MB. Free memory was 149.1MB in the beginning and 128.5MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-03-03 17:55:18,450 INFO L158 Benchmark]: TraceAbstraction took 861143.11ms. Allocated memory was 180.4MB in the beginning and 822.1MB in the end (delta: 641.7MB). Free memory was 128.2MB in the beginning and 425.9MB in the end (delta: -297.7MB). Peak memory consumption was 344.4MB. Max. memory is 8.0GB. [2022-03-03 17:55:18,450 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 180.4MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.25ms. Allocated memory is still 180.4MB. Free memory was 156.8MB in the beginning and 152.7MB in the end (delta: 4.2MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.51ms. Allocated memory is still 180.4MB. Free memory was 152.7MB in the beginning and 150.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.54ms. Allocated memory is still 180.4MB. Free memory was 150.8MB in the beginning and 149.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 523.90ms. Allocated memory is still 180.4MB. Free memory was 149.1MB in the beginning and 128.5MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 861143.11ms. Allocated memory was 180.4MB in the beginning and 822.1MB in the end (delta: 641.7MB). Free memory was 128.2MB in the beginning and 425.9MB in the end (delta: -297.7MB). Peak memory consumption was 344.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (12778states) and FLOYD_HOARE automaton (currently 193 states, 114 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 112 for 40ms.. - TimeoutResultAtElement [Line: 93]: 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 (12778states) and FLOYD_HOARE automaton (currently 193 states, 114 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 112 for 40ms.. - TimeoutResultAtElement [Line: 92]: 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 (12778states) and FLOYD_HOARE automaton (currently 193 states, 114 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 112 for 40ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 146 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 861.0s, OverallIterations: 60, TraceHistogramMax: 4, PathProgramHistogramMax: 52, EmptinessCheckTime: 0.3s, AutomataDifference: 488.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139330 SdHoareTripleChecker+Valid, 72.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139330 mSDsluCounter, 399384 SdHoareTripleChecker+Invalid, 62.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 88149 IncrementalHoareTripleChecker+Unchecked, 420821 mSDsCounter, 11111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 174759 IncrementalHoareTripleChecker+Invalid, 274019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11111 mSolverCounterUnsat, 10952 mSDtfsCounter, 174759 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21579 GetRequests, 12424 SyntacticMatches, 717 SemanticMatches, 8437 ConstructedPredicates, 32 IntricatePredicates, 4 DeprecatedPredicates, 525633 ImplicationChecksByTransitivity, 549.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12778occurred in iteration=59, InterpolantAutomatonStates: 4709, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 59 MinimizatonAttempts, 123160 StatesRemovedByMinimization, 57 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 347.1s InterpolantComputationTime, 14995 NumberOfCodeBlocks, 14779 NumberOfCodeBlocksAsserted, 180 NumberOfCheckSat, 22005 ConstructedInterpolants, 2219 QuantifiedInterpolants, 495126 SizeOfPredicates, 1796 NumberOfNonLiveVariables, 16655 ConjunctsInSsa, 3197 ConjunctsInUnsatCore, 171 InterpolantComputations, 5 PerfectInterpolantSequences, 874/4890 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