/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.abstract-por-f0ea240 [2022-02-10 23:02:40,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:02:40,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:02:40,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:02:40,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 23:02:40,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 23:02:40,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 23:02:40,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 23:02:40,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 23:02:40,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 23:02:40,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 23:02:40,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 23:02:40,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 23:02:40,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 23:02:40,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 23:02:40,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 23:02:40,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 23:02:40,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 23:02:40,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 23:02:40,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 23:02:40,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 23:02:40,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:02:40,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:02:40,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:02:40,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:02:40,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:02:40,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:02:40,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:02:40,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:02:40,747 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:02:40,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:02:40,747 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:02:40,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:02:40,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:02:40,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:02:40,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:02:40,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:02:40,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:02:40,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:02:40,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:02:40,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:02:40,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:02:40,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:02:40,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:02:40,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:02:40,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:02:40,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:02:40,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:02:40,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:02:40,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 23:02:40,970 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 23:02:40,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-02-10 23:02:41,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec107c879/148611f6bb46446f8c60c3abcb1f09a6/FLAG21fe018d6 [2022-02-10 23:02:41,402 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 23:02:41,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-02-10 23:02:41,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec107c879/148611f6bb46446f8c60c3abcb1f09a6/FLAG21fe018d6 [2022-02-10 23:02:41,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec107c879/148611f6bb46446f8c60c3abcb1f09a6 [2022-02-10 23:02:41,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:02:41,817 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 23:02:41,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 23:02:41,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 23:02:41,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 23:02:41,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:02:41" (1/1) ... [2022-02-10 23:02:41,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6cca42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:41, skipping insertion in model container [2022-02-10 23:02:41,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:02:41" (1/1) ... [2022-02-10 23:02:41,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 23:02:41,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 23:02:41,993 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] [2022-02-10 23:02:41,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:02:42,003 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 23:02:42,016 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] [2022-02-10 23:02:42,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:02:42,027 INFO L208 MainTranslator]: Completed translation [2022-02-10 23:02:42,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42 WrapperNode [2022-02-10 23:02:42,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 23:02:42,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:02:42,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:02:42,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:02:42,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,084 INFO L137 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 154 [2022-02-10 23:02:42,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:02:42,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:02:42,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:02:42,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:02:42,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:02:42,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:02:42,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:02:42,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:02:42,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (1/1) ... [2022-02-10 23:02:42,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:02:42,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:42,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 23:02:42,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 23:02:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 23:02:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 23:02:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 23:02:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 23:02:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:02:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 23:02:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 23:02:42,183 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 23:02:42,270 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:02:42,271 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:02:42,505 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:02:42,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:02:42,582 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-10 23:02:42,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:02:42 BoogieIcfgContainer [2022-02-10 23:02:42,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:02:42,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:02:42,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:02:42,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:02:42,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 11:02:41" (1/3) ... [2022-02-10 23:02:42,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f07e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:02:42, skipping insertion in model container [2022-02-10 23:02:42,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:02:42" (2/3) ... [2022-02-10 23:02:42,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f07e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:02:42, skipping insertion in model container [2022-02-10 23:02:42,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:02:42" (3/3) ... [2022-02-10 23:02:42,593 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2022-02-10 23:02:42,600 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:02:42,600 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:02:42,600 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:02:42,600 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:02:42,641 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,641 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,641 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,642 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,643 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,645 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,645 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,645 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,645 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,645 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,646 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,646 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,646 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,646 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,647 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,647 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,647 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,647 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,648 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,648 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,648 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,648 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,649 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,650 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,650 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,650 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,650 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,651 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,651 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,651 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,651 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,651 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,652 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,653 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,653 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,653 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,653 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,653 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,654 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,654 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,654 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,654 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,655 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,655 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,658 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,658 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,658 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,659 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,659 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,659 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,659 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,660 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,661 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:02:42,664 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 23:02:42,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:02:42,693 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, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 23:02:42,694 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:02:42,700 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 136 transitions, 288 flow [2022-02-10 23:02:42,746 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) [2022-02-10 23:02:42,748 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) [2022-02-10 23:02:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-10 23:02:42,760 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:42,762 INFO L515 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] [2022-02-10 23:02:42,762 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:42,765 INFO L85 PathProgramCache]: Analyzing trace with hash -90218077, now seen corresponding path program 1 times [2022-02-10 23:02:42,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:42,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843395646] [2022-02-10 23:02:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:42,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:42,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843395646] [2022-02-10 23:02:42,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843395646] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:02:42,957 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:02:42,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 23:02:42,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20216490] [2022-02-10 23:02:42,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:02:42,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 23:02:42,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 23:02:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 23:02:42,986 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) [2022-02-10 23:02:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:43,030 INFO L93 Difference]: Finished difference Result 490 states and 1135 transitions. [2022-02-10 23:02:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 23:02:43,032 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 [2022-02-10 23:02:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:43,047 INFO L225 Difference]: With dead ends: 490 [2022-02-10 23:02:43,048 INFO L226 Difference]: Without dead ends: 486 [2022-02-10 23:02:43,049 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 23:02:43,052 INFO L934 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 [2022-02-10 23:02:43,052 INFO L935 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] [2022-02-10 23:02:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-02-10 23:02:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-02-10 23:02:43,155 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) [2022-02-10 23:02:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1131 transitions. [2022-02-10 23:02:43,157 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1131 transitions. Word has length 97 [2022-02-10 23:02:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:43,158 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1131 transitions. [2022-02-10 23:02:43,158 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) [2022-02-10 23:02:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1131 transitions. [2022-02-10 23:02:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 23:02:43,166 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:43,166 INFO L515 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] [2022-02-10 23:02:43,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:02:43,166 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash 751312825, now seen corresponding path program 1 times [2022-02-10 23:02:43,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:43,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742567678] [2022-02-10 23:02:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:43,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:43,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742567678] [2022-02-10 23:02:43,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742567678] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:02:43,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:02:43,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:02:43,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85716575] [2022-02-10 23:02:43,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:02:43,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:02:43,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:43,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:02:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:02:43,311 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) [2022-02-10 23:02:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:43,421 INFO L93 Difference]: Finished difference Result 579 states and 1299 transitions. [2022-02-10 23:02:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:02:43,422 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 [2022-02-10 23:02:43,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:43,424 INFO L225 Difference]: With dead ends: 579 [2022-02-10 23:02:43,424 INFO L226 Difference]: Without dead ends: 492 [2022-02-10 23:02:43,424 INFO L933 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 [2022-02-10 23:02:43,425 INFO L934 BasicCegarLoop]: 98 mSDtfsCounter, 226 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:43,426 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 333 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:02:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-02-10 23:02:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 487. [2022-02-10 23:02:43,435 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) [2022-02-10 23:02:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1132 transitions. [2022-02-10 23:02:43,437 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1132 transitions. Word has length 100 [2022-02-10 23:02:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:43,437 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 1132 transitions. [2022-02-10 23:02:43,437 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) [2022-02-10 23:02:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1132 transitions. [2022-02-10 23:02:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-10 23:02:43,439 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:43,439 INFO L515 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] [2022-02-10 23:02:43,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:02:43,440 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:43,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2074297026, now seen corresponding path program 1 times [2022-02-10 23:02:43,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:43,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931202791] [2022-02-10 23:02:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:02:43,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:43,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931202791] [2022-02-10 23:02:43,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931202791] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:02:43,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:02:43,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:02:43,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661064298] [2022-02-10 23:02:43,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:02:43,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:02:43,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:43,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:02:43,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:02:43,570 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) [2022-02-10 23:02:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:43,595 INFO L93 Difference]: Finished difference Result 521 states and 1214 transitions. [2022-02-10 23:02:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:02:43,595 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 [2022-02-10 23:02:43,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:43,598 INFO L225 Difference]: With dead ends: 521 [2022-02-10 23:02:43,598 INFO L226 Difference]: Without dead ends: 521 [2022-02-10 23:02:43,598 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:02:43,599 INFO L934 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 [2022-02-10 23:02:43,599 INFO L935 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] [2022-02-10 23:02:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-02-10 23:02:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-02-10 23:02:43,607 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) [2022-02-10 23:02:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1214 transitions. [2022-02-10 23:02:43,609 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1214 transitions. Word has length 107 [2022-02-10 23:02:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:43,609 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1214 transitions. [2022-02-10 23:02:43,609 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) [2022-02-10 23:02:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1214 transitions. [2022-02-10 23:02:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-10 23:02:43,611 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:43,611 INFO L515 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] [2022-02-10 23:02:43,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:02:43,611 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash -940192228, now seen corresponding path program 2 times [2022-02-10 23:02:43,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:43,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378615068] [2022-02-10 23:02:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:43,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:02:43,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:43,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378615068] [2022-02-10 23:02:43,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378615068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:02:43,842 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:02:43,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-10 23:02:43,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890132273] [2022-02-10 23:02:43,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:02:43,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:02:43,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:02:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:02:43,844 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) [2022-02-10 23:02:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:43,977 INFO L93 Difference]: Finished difference Result 856 states and 2027 transitions. [2022-02-10 23:02:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:02:43,978 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 [2022-02-10 23:02:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:43,984 INFO L225 Difference]: With dead ends: 856 [2022-02-10 23:02:43,984 INFO L226 Difference]: Without dead ends: 805 [2022-02-10 23:02:43,985 INFO L933 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 [2022-02-10 23:02:43,992 INFO L934 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 [2022-02-10 23:02:43,993 INFO L935 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] [2022-02-10 23:02:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-02-10 23:02:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 614. [2022-02-10 23:02:44,029 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) [2022-02-10 23:02:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1419 transitions. [2022-02-10 23:02:44,031 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1419 transitions. Word has length 107 [2022-02-10 23:02:44,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:44,033 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1419 transitions. [2022-02-10 23:02:44,033 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) [2022-02-10 23:02:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1419 transitions. [2022-02-10 23:02:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-10 23:02:44,035 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:44,035 INFO L515 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] [2022-02-10 23:02:44,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 23:02:44,035 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1596238760, now seen corresponding path program 1 times [2022-02-10 23:02:44,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:44,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457487655] [2022-02-10 23:02:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:44,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:02:44,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:44,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457487655] [2022-02-10 23:02:44,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457487655] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:44,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429606719] [2022-02-10 23:02:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:44,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:44,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:44,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:44,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 23:02:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:44,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:02:44,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:02:44,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 23:02:44,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429606719] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:02:44,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 23:02:44,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-02-10 23:02:44,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567915862] [2022-02-10 23:02:44,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:02:44,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 23:02:44,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 23:02:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:02:44,409 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) [2022-02-10 23:02:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:44,438 INFO L93 Difference]: Finished difference Result 1238 states and 3016 transitions. [2022-02-10 23:02:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 23:02:44,438 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 [2022-02-10 23:02:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:44,442 INFO L225 Difference]: With dead ends: 1238 [2022-02-10 23:02:44,442 INFO L226 Difference]: Without dead ends: 1097 [2022-02-10 23:02:44,443 INFO L933 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 [2022-02-10 23:02:44,443 INFO L934 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 [2022-02-10 23:02:44,443 INFO L935 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] [2022-02-10 23:02:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-02-10 23:02:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 837. [2022-02-10 23:02:44,457 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) [2022-02-10 23:02:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2094 transitions. [2022-02-10 23:02:44,460 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2094 transitions. Word has length 111 [2022-02-10 23:02:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:44,460 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2094 transitions. [2022-02-10 23:02:44,460 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) [2022-02-10 23:02:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2094 transitions. [2022-02-10 23:02:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-10 23:02:44,462 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:44,462 INFO L515 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] [2022-02-10 23:02:44,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:44,679 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 [2022-02-10 23:02:44,679 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash 891713281, now seen corresponding path program 1 times [2022-02-10 23:02:44,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:44,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41741081] [2022-02-10 23:02:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:44,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:44,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:44,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41741081] [2022-02-10 23:02:44,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41741081] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:44,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042145506] [2022-02-10 23:02:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:44,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:44,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:44,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:44,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 23:02:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:44,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 23:02:44,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:45,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:45,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042145506] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:45,476 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:45,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 23:02:45,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046573438] [2022-02-10 23:02:45,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:45,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 23:02:45,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 23:02:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-02-10 23:02:45,485 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) [2022-02-10 23:02:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:45,653 INFO L93 Difference]: Finished difference Result 1194 states and 2907 transitions. [2022-02-10 23:02:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 23:02:45,654 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 [2022-02-10 23:02:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:45,657 INFO L225 Difference]: With dead ends: 1194 [2022-02-10 23:02:45,657 INFO L226 Difference]: Without dead ends: 849 [2022-02-10 23:02:45,658 INFO L933 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 [2022-02-10 23:02:45,658 INFO L934 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 [2022-02-10 23:02:45,658 INFO L935 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] [2022-02-10 23:02:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-02-10 23:02:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 844. [2022-02-10 23:02:45,671 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) [2022-02-10 23:02:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2101 transitions. [2022-02-10 23:02:45,673 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2101 transitions. Word has length 112 [2022-02-10 23:02:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:45,673 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2101 transitions. [2022-02-10 23:02:45,673 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) [2022-02-10 23:02:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2101 transitions. [2022-02-10 23:02:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-10 23:02:45,675 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:45,675 INFO L515 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] [2022-02-10 23:02:45,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-10 23:02:45,891 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 [2022-02-10 23:02:45,891 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:45,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1610634378, now seen corresponding path program 2 times [2022-02-10 23:02:45,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:45,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97998205] [2022-02-10 23:02:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:45,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:46,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:46,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97998205] [2022-02-10 23:02:46,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97998205] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:46,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481784567] [2022-02-10 23:02:46,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:46,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:46,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:46,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:46,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 23:02:46,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:46,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:46,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:02:46,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:02:47,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:02:47,861 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 [2022-02-10 23:02:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:47,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:48,254 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:02:48,254 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 [2022-02-10 23:02:48,257 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 [2022-02-10 23:02:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:49,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481784567] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:49,666 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:49,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 21] total 61 [2022-02-10 23:02:49,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895115228] [2022-02-10 23:02:49,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:49,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:02:49,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:49,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:02:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3270, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 23:02:49,669 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) [2022-02-10 23:02:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:52,043 INFO L93 Difference]: Finished difference Result 2577 states and 6519 transitions. [2022-02-10 23:02:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 23:02:52,044 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 [2022-02-10 23:02:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:52,052 INFO L225 Difference]: With dead ends: 2577 [2022-02-10 23:02:52,052 INFO L226 Difference]: Without dead ends: 2051 [2022-02-10 23:02:52,054 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 206 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1361, Invalid=8145, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 23:02:52,055 INFO L934 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 [2022-02-10 23:02:52,055 INFO L935 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] [2022-02-10 23:02:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-02-10 23:02:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1455. [2022-02-10 23:02:52,090 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) [2022-02-10 23:02:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 3713 transitions. [2022-02-10 23:02:52,094 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 3713 transitions. Word has length 119 [2022-02-10 23:02:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:52,094 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 3713 transitions. [2022-02-10 23:02:52,094 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) [2022-02-10 23:02:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 3713 transitions. [2022-02-10 23:02:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-10 23:02:52,097 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:52,097 INFO L515 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] [2022-02-10 23:02:52,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:52,315 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 [2022-02-10 23:02:52,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1403854876, now seen corresponding path program 3 times [2022-02-10 23:02:52,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:52,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532711477] [2022-02-10 23:02:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:52,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:52,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532711477] [2022-02-10 23:02:52,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532711477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:52,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151596089] [2022-02-10 23:02:52,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:02:52,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:52,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:52,927 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:52,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 23:02:53,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:02:53,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:53,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 23:02:53,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:53,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:02:53,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:02:53,525 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 [2022-02-10 23:02:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:02:53,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:53,632 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 [2022-02-10 23:02:53,661 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:02:53,662 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 [2022-02-10 23:02:53,665 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 [2022-02-10 23:02:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-02-10 23:02:54,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151596089] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:54,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:54,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 43 [2022-02-10 23:02:54,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538527066] [2022-02-10 23:02:54,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:54,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 23:02:54,118 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 23:02:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1614, Unknown=1, NotChecked=80, Total=1806 [2022-02-10 23:02:54,119 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) [2022-02-10 23:02:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:56,119 INFO L93 Difference]: Finished difference Result 2095 states and 5291 transitions. [2022-02-10 23:02:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:02:56,119 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 [2022-02-10 23:02:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:56,126 INFO L225 Difference]: With dead ends: 2095 [2022-02-10 23:02:56,126 INFO L226 Difference]: Without dead ends: 2095 [2022-02-10 23:02:56,127 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=769, Invalid=5086, Unknown=1, NotChecked=150, Total=6006 [2022-02-10 23:02:56,127 INFO L934 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 [2022-02-10 23:02:56,127 INFO L935 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] [2022-02-10 23:02:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2022-02-10 23:02:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1394. [2022-02-10 23:02:56,151 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) [2022-02-10 23:02:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3515 transitions. [2022-02-10 23:02:56,154 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3515 transitions. Word has length 119 [2022-02-10 23:02:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:56,154 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 3515 transitions. [2022-02-10 23:02:56,154 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) [2022-02-10 23:02:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3515 transitions. [2022-02-10 23:02:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:02:56,157 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:56,157 INFO L515 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] [2022-02-10 23:02:56,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:56,373 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 [2022-02-10 23:02:56,373 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:56,373 INFO L85 PathProgramCache]: Analyzing trace with hash -871935768, now seen corresponding path program 1 times [2022-02-10 23:02:56,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:56,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002303892] [2022-02-10 23:02:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:57,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:57,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002303892] [2022-02-10 23:02:57,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002303892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:57,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873643160] [2022-02-10 23:02:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:57,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:57,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:57,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:57,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 23:02:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:57,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-10 23:02:57,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:57,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:02:57,962 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:02:57,962 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:02:59,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:02:59,386 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-10 23:02:59,387 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 [2022-02-10 23:02:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:59,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:00,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:03:00,462 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 [2022-02-10 23:03:00,466 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 [2022-02-10 23:03:02,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:03:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:02,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873643160] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:02,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:02,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-02-10 23:03:02,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630120113] [2022-02-10 23:03:02,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:02,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-10 23:03:02,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-10 23:03:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=6411, Unknown=5, NotChecked=0, Total=6972 [2022-02-10 23:03:02,551 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) [2022-02-10 23:03:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:06,305 INFO L93 Difference]: Finished difference Result 2175 states and 5407 transitions. [2022-02-10 23:03:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 23:03:06,305 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 [2022-02-10 23:03:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:06,313 INFO L225 Difference]: With dead ends: 2175 [2022-02-10 23:03:06,313 INFO L226 Difference]: Without dead ends: 1918 [2022-02-10 23:03:06,316 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5203 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1473, Invalid=15290, Unknown=7, NotChecked=0, Total=16770 [2022-02-10 23:03:06,316 INFO L934 BasicCegarLoop]: 168 mSDtfsCounter, 1640 mSDsluCounter, 6598 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:06,316 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 6177 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1720 Invalid, 0 Unknown, 1358 Unchecked, 0.8s Time] [2022-02-10 23:03:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2022-02-10 23:03:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1489. [2022-02-10 23:03:06,341 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) [2022-02-10 23:03:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 3760 transitions. [2022-02-10 23:03:06,344 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 3760 transitions. Word has length 123 [2022-02-10 23:03:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:06,344 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 3760 transitions. [2022-02-10 23:03:06,345 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) [2022-02-10 23:03:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 3760 transitions. [2022-02-10 23:03:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:03:06,347 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:06,347 INFO L515 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] [2022-02-10 23:03:06,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:06,563 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 [2022-02-10 23:03:06,564 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash 365129222, now seen corresponding path program 2 times [2022-02-10 23:03:06,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:06,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805577977] [2022-02-10 23:03:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:06,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:07,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:07,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805577977] [2022-02-10 23:03:07,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805577977] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:07,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197784536] [2022-02-10 23:03:07,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:03:07,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:07,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:07,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:07,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 23:03:07,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:03:07,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:07,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 59 conjunts are in the unsatisfiable core [2022-02-10 23:03:07,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:03:09,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:03:09,144 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 [2022-02-10 23:03:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:09,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:10,100 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:03:10,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 74 [2022-02-10 23:03:10,104 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 [2022-02-10 23:03:10,106 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 [2022-02-10 23:03:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:11,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197784536] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:11,862 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:11,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 31] total 84 [2022-02-10 23:03:11,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021057352] [2022-02-10 23:03:11,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:11,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-10 23:03:11,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:11,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-10 23:03:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=6532, Unknown=25, NotChecked=0, Total=6972 [2022-02-10 23:03:11,866 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) [2022-02-10 23:03:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:22,381 INFO L93 Difference]: Finished difference Result 2922 states and 7146 transitions. [2022-02-10 23:03:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 23:03:22,381 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 [2022-02-10 23:03:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:22,389 INFO L225 Difference]: With dead ends: 2922 [2022-02-10 23:03:22,390 INFO L226 Difference]: Without dead ends: 2467 [2022-02-10 23:03:22,393 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2495, Invalid=24201, Unknown=36, NotChecked=0, Total=26732 [2022-02-10 23:03:22,393 INFO L934 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 [2022-02-10 23:03:22,393 INFO L935 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] [2022-02-10 23:03:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-02-10 23:03:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 1664. [2022-02-10 23:03:22,424 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) [2022-02-10 23:03:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 4112 transitions. [2022-02-10 23:03:22,427 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 4112 transitions. Word has length 123 [2022-02-10 23:03:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:22,428 INFO L470 AbstractCegarLoop]: Abstraction has 1664 states and 4112 transitions. [2022-02-10 23:03:22,428 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) [2022-02-10 23:03:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 4112 transitions. [2022-02-10 23:03:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:03:22,431 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:22,431 INFO L515 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] [2022-02-10 23:03:22,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:22,661 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 [2022-02-10 23:03:22,661 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash -854331734, now seen corresponding path program 3 times [2022-02-10 23:03:22,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:22,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921300046] [2022-02-10 23:03:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:24,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:24,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921300046] [2022-02-10 23:03:24,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921300046] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:24,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931384605] [2022-02-10 23:03:24,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:03:24,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:24,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:24,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:24,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 23:03:24,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:03:24,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:24,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 23:03:24,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:24,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:03:24,358 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:03:24,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:03:24,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:03:24,958 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 [2022-02-10 23:03:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:03:25,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:25,902 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:03:25,902 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 [2022-02-10 23:03:25,906 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 [2022-02-10 23:03:26,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:03:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:03:26,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931384605] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:26,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:26,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 23, 23] total 67 [2022-02-10 23:03:26,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574267603] [2022-02-10 23:03:26,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:26,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-10 23:03:26,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-10 23:03:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=4170, Unknown=6, NotChecked=0, Total=4422 [2022-02-10 23:03:26,552 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) [2022-02-10 23:03:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:33,921 INFO L93 Difference]: Finished difference Result 3827 states and 9429 transitions. [2022-02-10 23:03:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-10 23:03:33,923 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 [2022-02-10 23:03:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:33,947 INFO L225 Difference]: With dead ends: 3827 [2022-02-10 23:03:33,948 INFO L226 Difference]: Without dead ends: 3431 [2022-02-10 23:03:33,950 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 219 SyntacticMatches, 7 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7229 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1937, Invalid=22859, Unknown=10, NotChecked=0, Total=24806 [2022-02-10 23:03:33,950 INFO L934 BasicCegarLoop]: 207 mSDtfsCounter, 3102 mSDsluCounter, 7902 mSDsCounter, 0 mSdLazyCounter, 4757 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:33,950 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3102 Valid, 7340 Invalid, 5961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 4757 Invalid, 0 Unknown, 913 Unchecked, 1.9s Time] [2022-02-10 23:03:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-02-10 23:03:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 1704. [2022-02-10 23:03:33,985 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) [2022-02-10 23:03:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 4210 transitions. [2022-02-10 23:03:33,988 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 4210 transitions. Word has length 123 [2022-02-10 23:03:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:33,988 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 4210 transitions. [2022-02-10 23:03:33,989 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) [2022-02-10 23:03:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 4210 transitions. [2022-02-10 23:03:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:03:33,991 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:33,992 INFO L515 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] [2022-02-10 23:03:34,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:34,207 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 [2022-02-10 23:03:34,208 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:34,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1340828470, now seen corresponding path program 4 times [2022-02-10 23:03:34,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:34,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282617602] [2022-02-10 23:03:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:34,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:35,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:35,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282617602] [2022-02-10 23:03:35,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282617602] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:35,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183811309] [2022-02-10 23:03:35,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:03:35,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:35,318 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:35,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 23:03:35,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:03:35,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:35,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 63 conjunts are in the unsatisfiable core [2022-02-10 23:03:35,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:37,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:03:37,013 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 [2022-02-10 23:03:37,130 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 [2022-02-10 23:03:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:37,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:37,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:03:37,935 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 [2022-02-10 23:03:37,938 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 [2022-02-10 23:03:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:39,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183811309] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:39,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:39,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36, 35] total 95 [2022-02-10 23:03:39,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067544535] [2022-02-10 23:03:39,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:39,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-10 23:03:39,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:39,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-10 23:03:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=8293, Unknown=4, NotChecked=0, Total=8930 [2022-02-10 23:03:39,466 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) [2022-02-10 23:03:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:55,240 INFO L93 Difference]: Finished difference Result 4357 states and 10954 transitions. [2022-02-10 23:03:55,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-10 23:03:55,240 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 [2022-02-10 23:03:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:55,253 INFO L225 Difference]: With dead ends: 4357 [2022-02-10 23:03:55,253 INFO L226 Difference]: Without dead ends: 4001 [2022-02-10 23:03:55,255 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15135 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=4776, Invalid=41225, Unknown=9, NotChecked=0, Total=46010 [2022-02-10 23:03:55,255 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 5560 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 5450 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:55,255 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [5560 Valid, 8549 Invalid, 7560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 5450 Invalid, 0 Unknown, 1346 Unchecked, 2.5s Time] [2022-02-10 23:03:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-02-10 23:03:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 1791. [2022-02-10 23:03:55,309 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) [2022-02-10 23:03:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 4444 transitions. [2022-02-10 23:03:55,312 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 4444 transitions. Word has length 123 [2022-02-10 23:03:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:55,312 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 4444 transitions. [2022-02-10 23:03:55,313 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) [2022-02-10 23:03:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 4444 transitions. [2022-02-10 23:03:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:03:55,315 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:55,315 INFO L515 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] [2022-02-10 23:03:55,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:55,532 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 [2022-02-10 23:03:55,532 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1076103478, now seen corresponding path program 5 times [2022-02-10 23:03:55,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:55,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082438652] [2022-02-10 23:03:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:55,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:56,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:56,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082438652] [2022-02-10 23:03:56,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082438652] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:56,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137266741] [2022-02-10 23:03:56,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:03:56,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:56,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:56,523 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:56,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 23:03:56,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:03:56,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:56,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-10 23:03:56,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:56,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:03:56,737 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:03:56,737 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 11 treesize of output 11 [2022-02-10 23:03:57,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:03:57,557 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:03:57,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:03:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:03:57,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:58,108 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:03:58,109 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 [2022-02-10 23:03:58,111 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 [2022-02-10 23:03:58,113 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 [2022-02-10 23:03:58,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:03:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:03:58,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137266741] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:58,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:58,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 61 [2022-02-10 23:03:58,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759124650] [2022-02-10 23:03:58,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:58,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:03:58,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:58,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:03:58,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3450, Unknown=2, NotChecked=0, Total=3660 [2022-02-10 23:03:58,825 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) [2022-02-10 23:04:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:01,170 INFO L93 Difference]: Finished difference Result 2502 states and 6221 transitions. [2022-02-10 23:04:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 23:04:01,171 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 [2022-02-10 23:04:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:01,185 INFO L225 Difference]: With dead ends: 2502 [2022-02-10 23:04:01,185 INFO L226 Difference]: Without dead ends: 2303 [2022-02-10 23:04:01,186 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2609 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=846, Invalid=9252, Unknown=2, NotChecked=0, Total=10100 [2022-02-10 23:04:01,186 INFO L934 BasicCegarLoop]: 165 mSDtfsCounter, 1289 mSDsluCounter, 6209 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-02-10 23:04:01,187 INFO L935 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] [2022-02-10 23:04:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2022-02-10 23:04:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1857. [2022-02-10 23:04:01,210 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) [2022-02-10 23:04:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 4634 transitions. [2022-02-10 23:04:01,213 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 4634 transitions. Word has length 123 [2022-02-10 23:04:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:01,214 INFO L470 AbstractCegarLoop]: Abstraction has 1857 states and 4634 transitions. [2022-02-10 23:04:01,214 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) [2022-02-10 23:04:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 4634 transitions. [2022-02-10 23:04:01,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:04:01,217 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:01,217 INFO L515 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] [2022-02-10 23:04:01,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:01,431 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 [2022-02-10 23:04:01,432 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:01,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1294464682, now seen corresponding path program 6 times [2022-02-10 23:04:01,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:01,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102491683] [2022-02-10 23:04:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:02,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:02,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102491683] [2022-02-10 23:04:02,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102491683] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:02,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066638386] [2022-02-10 23:04:02,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:04:02,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:02,372 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:02,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 23:04:02,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:04:02,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:02,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-10 23:04:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:02,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:04:02,875 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:04:02,875 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 [2022-02-10 23:04:03,041 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 [2022-02-10 23:04:03,204 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 [2022-02-10 23:04:03,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:04:04,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:04:04,144 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 [2022-02-10 23:04:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:04,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:04,754 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 [2022-02-10 23:04:04,790 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 [2022-02-10 23:04:04,804 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 [2022-02-10 23:04:04,813 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 [2022-02-10 23:04:06,215 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-02-10 23:04:06,215 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 [2022-02-10 23:04:06,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:04:06,241 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 [2022-02-10 23:04:06,251 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:04:06,251 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 [2022-02-10 23:04:06,262 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 [2022-02-10 23:04:06,269 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 [2022-02-10 23:04:09,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:04:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-02-10 23:04:09,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066638386] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:09,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:09,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 34] total 89 [2022-02-10 23:04:09,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579166087] [2022-02-10 23:04:09,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:09,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-10 23:04:09,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-10 23:04:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=6538, Unknown=60, NotChecked=676, Total=7832 [2022-02-10 23:04:09,079 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) [2022-02-10 23:04:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:22,030 INFO L93 Difference]: Finished difference Result 3181 states and 7939 transitions. [2022-02-10 23:04:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-10 23:04:22,040 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 [2022-02-10 23:04:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:22,046 INFO L225 Difference]: With dead ends: 3181 [2022-02-10 23:04:22,046 INFO L226 Difference]: Without dead ends: 2892 [2022-02-10 23:04:22,048 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 204 SyntacticMatches, 27 SemanticMatches, 156 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 8497 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=2383, Invalid=21079, Unknown=116, NotChecked=1228, Total=24806 [2022-02-10 23:04:22,048 INFO L934 BasicCegarLoop]: 163 mSDtfsCounter, 2219 mSDsluCounter, 6059 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:22,048 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 5781 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2418 Invalid, 0 Unknown, 2407 Unchecked, 1.0s Time] [2022-02-10 23:04:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2022-02-10 23:04:22,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2000. [2022-02-10 23:04:22,106 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) [2022-02-10 23:04:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 4960 transitions. [2022-02-10 23:04:22,109 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 4960 transitions. Word has length 123 [2022-02-10 23:04:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:22,110 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 4960 transitions. [2022-02-10 23:04:22,110 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) [2022-02-10 23:04:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 4960 transitions. [2022-02-10 23:04:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:04:22,113 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:22,113 INFO L515 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] [2022-02-10 23:04:22,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-02-10 23:04:22,329 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 [2022-02-10 23:04:22,329 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:22,330 INFO L85 PathProgramCache]: Analyzing trace with hash 581984166, now seen corresponding path program 7 times [2022-02-10 23:04:22,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:22,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682741795] [2022-02-10 23:04:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:23,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:23,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682741795] [2022-02-10 23:04:23,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682741795] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:23,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310530640] [2022-02-10 23:04:23,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:04:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:23,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:23,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 23:04:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:23,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-10 23:04:23,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:23,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:04:23,582 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:04:23,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:04:24,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:04:24,818 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-10 23:04:24,819 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 [2022-02-10 23:04:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:25,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:25,910 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:04:25,910 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 [2022-02-10 23:04:25,913 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 [2022-02-10 23:04:27,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:04:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:27,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310530640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:27,910 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:27,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-02-10 23:04:27,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049871417] [2022-02-10 23:04:27,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:27,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-10 23:04:27,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-10 23:04:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=6427, Unknown=4, NotChecked=0, Total=6972 [2022-02-10 23:04:27,912 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) [2022-02-10 23:04:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:33,647 INFO L93 Difference]: Finished difference Result 3455 states and 8490 transitions. [2022-02-10 23:04:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 23:04:33,648 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 [2022-02-10 23:04:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:33,654 INFO L225 Difference]: With dead ends: 3455 [2022-02-10 23:04:33,654 INFO L226 Difference]: Without dead ends: 3106 [2022-02-10 23:04:33,657 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 198 SyntacticMatches, 20 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7541 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2235, Invalid=20108, Unknown=7, NotChecked=0, Total=22350 [2022-02-10 23:04:33,658 INFO L934 BasicCegarLoop]: 178 mSDtfsCounter, 2383 mSDsluCounter, 8132 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2022-02-10 23:04:33,659 INFO L935 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] [2022-02-10 23:04:33,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-02-10 23:04:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 2033. [2022-02-10 23:04:33,689 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) [2022-02-10 23:04:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 5058 transitions. [2022-02-10 23:04:33,693 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 5058 transitions. Word has length 123 [2022-02-10 23:04:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:33,693 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 5058 transitions. [2022-02-10 23:04:33,693 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) [2022-02-10 23:04:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 5058 transitions. [2022-02-10 23:04:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:04:33,696 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:33,697 INFO L515 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] [2022-02-10 23:04:33,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:33,911 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 [2022-02-10 23:04:33,912 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash 807967946, now seen corresponding path program 8 times [2022-02-10 23:04:33,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:33,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635583770] [2022-02-10 23:04:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:33,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:34,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:34,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635583770] [2022-02-10 23:04:34,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635583770] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:34,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372237208] [2022-02-10 23:04:34,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:04:34,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:34,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:34,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 23:04:34,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:04:34,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:34,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 67 conjunts are in the unsatisfiable core [2022-02-10 23:04:34,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:34,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:04:35,054 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:04:35,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:04:35,164 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 [2022-02-10 23:04:35,339 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 [2022-02-10 23:04:35,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:04:36,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:04:36,125 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 [2022-02-10 23:04:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:36,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:39,335 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-02-10 23:04:39,336 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 [2022-02-10 23:04:39,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:04:39,347 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 [2022-02-10 23:04:39,356 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:04:39,356 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 [2022-02-10 23:04:39,362 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 [2022-02-10 23:04:41,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:04:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:41,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372237208] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:41,189 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:41,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 35] total 91 [2022-02-10 23:04:41,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217531606] [2022-02-10 23:04:41,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:41,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-10 23:04:41,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-10 23:04:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=7471, Unknown=86, NotChecked=0, Total=8190 [2022-02-10 23:04:41,190 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) [2022-02-10 23:04:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:46,673 INFO L93 Difference]: Finished difference Result 2999 states and 7384 transitions. [2022-02-10 23:04:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 23:04:46,675 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 [2022-02-10 23:04:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:46,708 INFO L225 Difference]: With dead ends: 2999 [2022-02-10 23:04:46,708 INFO L226 Difference]: Without dead ends: 2670 [2022-02-10 23:04:46,710 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7355 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2212, Invalid=20624, Unknown=116, NotChecked=0, Total=22952 [2022-02-10 23:04:46,710 INFO L934 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 [2022-02-10 23:04:46,710 INFO L935 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] [2022-02-10 23:04:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-02-10 23:04:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2031. [2022-02-10 23:04:46,756 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) [2022-02-10 23:04:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 5057 transitions. [2022-02-10 23:04:46,760 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 5057 transitions. Word has length 123 [2022-02-10 23:04:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:46,760 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 5057 transitions. [2022-02-10 23:04:46,760 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) [2022-02-10 23:04:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 5057 transitions. [2022-02-10 23:04:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:04:46,763 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:46,763 INFO L515 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] [2022-02-10 23:04:46,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:46,980 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 [2022-02-10 23:04:46,980 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2045032936, now seen corresponding path program 9 times [2022-02-10 23:04:46,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:46,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742925297] [2022-02-10 23:04:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:47,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:47,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742925297] [2022-02-10 23:04:47,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742925297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:47,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732039249] [2022-02-10 23:04:47,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:04:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:47,890 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:47,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 23:04:47,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:04:47,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:47,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-10 23:04:47,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:48,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:04:48,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:04:48,770 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 [2022-02-10 23:04:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:04:49,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:49,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:04:49,605 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 [2022-02-10 23:04:49,608 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 [2022-02-10 23:04:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:04:50,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732039249] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:50,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:50,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 23, 23] total 68 [2022-02-10 23:04:50,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820326078] [2022-02-10 23:04:50,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:50,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-10 23:04:50,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-10 23:04:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4297, Unknown=3, NotChecked=0, Total=4556 [2022-02-10 23:04:50,498 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) [2022-02-10 23:04:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:53,711 INFO L93 Difference]: Finished difference Result 2813 states and 7066 transitions. [2022-02-10 23:04:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 23:04:53,711 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 [2022-02-10 23:04:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:53,717 INFO L225 Difference]: With dead ends: 2813 [2022-02-10 23:04:53,717 INFO L226 Difference]: Without dead ends: 2561 [2022-02-10 23:04:53,718 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3882 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1386, Invalid=14361, Unknown=3, NotChecked=0, Total=15750 [2022-02-10 23:04:53,719 INFO L934 BasicCegarLoop]: 158 mSDtfsCounter, 1916 mSDsluCounter, 4781 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:53,719 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1916 Valid, 4567 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2482 Invalid, 0 Unknown, 288 Unchecked, 0.8s Time] [2022-02-10 23:04:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-02-10 23:04:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2045. [2022-02-10 23:04:53,747 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) [2022-02-10 23:04:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 5087 transitions. [2022-02-10 23:04:53,756 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 5087 transitions. Word has length 123 [2022-02-10 23:04:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:53,756 INFO L470 AbstractCegarLoop]: Abstraction has 2045 states and 5087 transitions. [2022-02-10 23:04:53,757 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) [2022-02-10 23:04:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 5087 transitions. [2022-02-10 23:04:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:04:53,760 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:53,760 INFO L515 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] [2022-02-10 23:04:53,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:53,979 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 [2022-02-10 23:04:53,980 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:53,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash 349498376, now seen corresponding path program 10 times [2022-02-10 23:04:53,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:53,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791888256] [2022-02-10 23:04:53,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:53,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:54,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:54,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791888256] [2022-02-10 23:04:54,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791888256] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:54,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318564794] [2022-02-10 23:04:54,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:04:54,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:54,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:54,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:54,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 23:04:55,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:04:55,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:55,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 63 conjunts are in the unsatisfiable core [2022-02-10 23:04:55,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:55,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:04:55,281 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:04:55,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:04:56,181 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 [2022-02-10 23:04:56,285 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-10 23:04:56,285 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 [2022-02-10 23:04:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:56,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:57,305 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:04:57,305 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 [2022-02-10 23:04:57,309 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 67 treesize of output 49 [2022-02-10 23:04:58,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:04:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:58,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318564794] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:58,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:58,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-02-10 23:04:58,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369455023] [2022-02-10 23:04:58,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:58,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-10 23:04:58,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-10 23:04:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=6415, Unknown=4, NotChecked=0, Total=6972 [2022-02-10 23:04:58,991 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) [2022-02-10 23:05:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:06,469 INFO L93 Difference]: Finished difference Result 3663 states and 9080 transitions. [2022-02-10 23:05:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-10 23:05:06,469 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 [2022-02-10 23:05:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:06,474 INFO L225 Difference]: With dead ends: 3663 [2022-02-10 23:05:06,474 INFO L226 Difference]: Without dead ends: 3254 [2022-02-10 23:05:06,476 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 202 SyntacticMatches, 18 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9526 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2340, Invalid=25037, Unknown=13, NotChecked=0, Total=27390 [2022-02-10 23:05:06,476 INFO L934 BasicCegarLoop]: 161 mSDtfsCounter, 2414 mSDsluCounter, 8085 mSDsCounter, 0 mSdLazyCounter, 3660 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:06,476 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2414 Valid, 7587 Invalid, 4954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 3660 Invalid, 0 Unknown, 1054 Unchecked, 1.4s Time] [2022-02-10 23:05:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2022-02-10 23:05:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 2144. [2022-02-10 23:05:06,500 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) [2022-02-10 23:05:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 5327 transitions. [2022-02-10 23:05:06,502 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 5327 transitions. Word has length 123 [2022-02-10 23:05:06,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:06,503 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 5327 transitions. [2022-02-10 23:05:06,503 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) [2022-02-10 23:05:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 5327 transitions. [2022-02-10 23:05:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:05:06,505 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:06,506 INFO L515 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] [2022-02-10 23:05:06,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:06,721 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 [2022-02-10 23:05:06,721 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash 277255470, now seen corresponding path program 11 times [2022-02-10 23:05:06,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:06,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904743510] [2022-02-10 23:05:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:07,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:07,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904743510] [2022-02-10 23:05:07,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904743510] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:07,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316224713] [2022-02-10 23:05:07,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:05:07,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:07,561 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:07,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 23:05:07,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:05:07,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:07,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 23:05:07,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:08,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:05:08,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:05:08,389 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 [2022-02-10 23:05:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:05:08,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:09,017 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:05:09,017 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 82 treesize of output 74 [2022-02-10 23:05:09,020 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 [2022-02-10 23:05:09,022 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 [2022-02-10 23:05:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:05:09,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316224713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:09,914 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:09,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22, 22] total 66 [2022-02-10 23:05:09,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39004266] [2022-02-10 23:05:09,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:09,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-10 23:05:09,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:09,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-10 23:05:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=4049, Unknown=4, NotChecked=0, Total=4290 [2022-02-10 23:05:09,916 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) [2022-02-10 23:05:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:14,398 INFO L93 Difference]: Finished difference Result 3117 states and 7802 transitions. [2022-02-10 23:05:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-10 23:05:14,398 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 [2022-02-10 23:05:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:14,402 INFO L225 Difference]: With dead ends: 3117 [2022-02-10 23:05:14,402 INFO L226 Difference]: Without dead ends: 2802 [2022-02-10 23:05:14,404 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 210 SyntacticMatches, 5 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5975 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1673, Invalid=19492, Unknown=5, NotChecked=0, Total=21170 [2022-02-10 23:05:14,404 INFO L934 BasicCegarLoop]: 188 mSDtfsCounter, 1800 mSDsluCounter, 6246 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:14,404 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 5943 Invalid, 3950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2707 Invalid, 0 Unknown, 1093 Unchecked, 1.0s Time] [2022-02-10 23:05:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2022-02-10 23:05:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1998. [2022-02-10 23:05:14,443 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) [2022-02-10 23:05:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 4994 transitions. [2022-02-10 23:05:14,447 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 4994 transitions. Word has length 123 [2022-02-10 23:05:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:14,447 INFO L470 AbstractCegarLoop]: Abstraction has 1998 states and 4994 transitions. [2022-02-10 23:05:14,448 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) [2022-02-10 23:05:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 4994 transitions. [2022-02-10 23:05:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:05:14,450 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:14,451 INFO L515 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] [2022-02-10 23:05:14,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:14,651 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 [2022-02-10 23:05:14,651 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:14,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash 241992788, now seen corresponding path program 12 times [2022-02-10 23:05:14,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:14,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287361345] [2022-02-10 23:05:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:15,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:15,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287361345] [2022-02-10 23:05:15,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287361345] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:15,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496783798] [2022-02-10 23:05:15,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:05:15,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:15,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:15,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:15,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 23:05:15,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:05:15,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:15,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-10 23:05:15,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:16,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:05:16,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:05:17,137 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 [2022-02-10 23:05:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:17,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:17,921 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:05:17,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 95 [2022-02-10 23:05:17,924 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 [2022-02-10 23:05:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:19,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496783798] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:19,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:19,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 87 [2022-02-10 23:05:19,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877719118] [2022-02-10 23:05:19,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:19,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-10 23:05:19,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:19,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-10 23:05:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=7021, Unknown=2, NotChecked=0, Total=7482 [2022-02-10 23:05:19,442 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) [2022-02-10 23:05:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:28,082 INFO L93 Difference]: Finished difference Result 3553 states and 8794 transitions. [2022-02-10 23:05:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 23:05:28,083 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 [2022-02-10 23:05:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:28,087 INFO L225 Difference]: With dead ends: 3553 [2022-02-10 23:05:28,087 INFO L226 Difference]: Without dead ends: 2952 [2022-02-10 23:05:28,088 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7193 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2604, Invalid=22514, Unknown=4, NotChecked=0, Total=25122 [2022-02-10 23:05:28,088 INFO L934 BasicCegarLoop]: 196 mSDtfsCounter, 3123 mSDsluCounter, 10420 mSDsCounter, 0 mSdLazyCounter, 5651 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:28,089 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3123 Valid, 9636 Invalid, 6442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 5651 Invalid, 0 Unknown, 457 Unchecked, 2.3s Time] [2022-02-10 23:05:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-02-10 23:05:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1906. [2022-02-10 23:05:28,127 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) [2022-02-10 23:05:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 4740 transitions. [2022-02-10 23:05:28,131 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 4740 transitions. Word has length 123 [2022-02-10 23:05:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:28,131 INFO L470 AbstractCegarLoop]: Abstraction has 1906 states and 4740 transitions. [2022-02-10 23:05:28,131 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) [2022-02-10 23:05:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 4740 transitions. [2022-02-10 23:05:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:05:28,134 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:28,134 INFO L515 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] [2022-02-10 23:05:28,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:28,351 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 [2022-02-10 23:05:28,351 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:28,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2101260580, now seen corresponding path program 13 times [2022-02-10 23:05:28,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:28,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560870502] [2022-02-10 23:05:28,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:28,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:29,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:29,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560870502] [2022-02-10 23:05:29,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560870502] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:29,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68328415] [2022-02-10 23:05:29,315 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:05:29,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:29,316 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:29,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 23:05:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:29,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 60 conjunts are in the unsatisfiable core [2022-02-10 23:05:29,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:29,408 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 [2022-02-10 23:05:29,638 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:05:29,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:05:30,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:05:30,559 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 [2022-02-10 23:05:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:30,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:31,376 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:05:31,376 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 [2022-02-10 23:05:31,378 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 [2022-02-10 23:05:33,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:05:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:33,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68328415] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:33,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:33,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 86 [2022-02-10 23:05:33,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122436267] [2022-02-10 23:05:33,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:33,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-10 23:05:33,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-10 23:05:33,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=6789, Unknown=3, NotChecked=0, Total=7310 [2022-02-10 23:05:33,041 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) [2022-02-10 23:05:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:42,676 INFO L93 Difference]: Finished difference Result 3336 states and 8329 transitions. [2022-02-10 23:05:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-10 23:05:42,676 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 [2022-02-10 23:05:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:42,680 INFO L225 Difference]: With dead ends: 3336 [2022-02-10 23:05:42,680 INFO L226 Difference]: Without dead ends: 2988 [2022-02-10 23:05:42,681 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 212 SyntacticMatches, 6 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7211 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=2936, Invalid=23466, Unknown=4, NotChecked=0, Total=26406 [2022-02-10 23:05:42,682 INFO L934 BasicCegarLoop]: 161 mSDtfsCounter, 3438 mSDsluCounter, 7921 mSDsCounter, 0 mSdLazyCounter, 4263 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:42,682 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3438 Valid, 7255 Invalid, 5441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 4263 Invalid, 0 Unknown, 813 Unchecked, 1.7s Time] [2022-02-10 23:05:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2022-02-10 23:05:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1858. [2022-02-10 23:05:42,706 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) [2022-02-10 23:05:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 4636 transitions. [2022-02-10 23:05:42,709 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 4636 transitions. Word has length 123 [2022-02-10 23:05:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:42,709 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 4636 transitions. [2022-02-10 23:05:42,709 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) [2022-02-10 23:05:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 4636 transitions. [2022-02-10 23:05:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:05:42,712 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:42,712 INFO L515 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] [2022-02-10 23:05:42,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-10 23:05:42,927 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 [2022-02-10 23:05:42,928 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1483855266, now seen corresponding path program 14 times [2022-02-10 23:05:42,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:42,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145384721] [2022-02-10 23:05:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:42,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:44,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:44,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145384721] [2022-02-10 23:05:44,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145384721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:44,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183500517] [2022-02-10 23:05:44,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:05:44,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:44,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:44,067 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:44,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 23:05:44,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:05:44,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:44,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-10 23:05:44,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:44,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:05:44,448 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:05:44,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:05:44,594 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 [2022-02-10 23:05:44,734 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 [2022-02-10 23:05:45,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:05:45,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:05:45,449 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 [2022-02-10 23:05:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:45,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:46,394 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 [2022-02-10 23:05:46,464 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 [2022-02-10 23:05:46,487 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 [2022-02-10 23:05:46,502 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 [2022-02-10 23:05:47,816 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-02-10 23:05:47,817 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 [2022-02-10 23:05:47,822 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:05:47,822 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 186 treesize of output 178 [2022-02-10 23:05:47,827 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:05:47,828 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 [2022-02-10 23:05:47,831 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 [2022-02-10 23:05:47,836 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 [2022-02-10 23:05:48,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:05:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-02-10 23:05:48,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183500517] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:48,954 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:48,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 34] total 90 [2022-02-10 23:05:48,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102955985] [2022-02-10 23:05:48,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:48,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-10 23:05:48,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-10 23:05:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=6733, Unknown=44, NotChecked=684, Total=8010 [2022-02-10 23:05:48,955 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) [2022-02-10 23:05:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:54,983 INFO L93 Difference]: Finished difference Result 2801 states and 6932 transitions. [2022-02-10 23:05:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 23:05:54,984 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 [2022-02-10 23:05:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:54,987 INFO L225 Difference]: With dead ends: 2801 [2022-02-10 23:05:54,987 INFO L226 Difference]: Without dead ends: 2485 [2022-02-10 23:05:54,988 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 201 SyntacticMatches, 14 SemanticMatches, 142 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 5638 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2202, Invalid=17212, Unknown=62, NotChecked=1116, Total=20592 [2022-02-10 23:05:54,988 INFO L934 BasicCegarLoop]: 146 mSDtfsCounter, 2638 mSDsluCounter, 5953 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-02-10 23:05:54,988 INFO L935 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] [2022-02-10 23:05:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2022-02-10 23:05:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 1891. [2022-02-10 23:05:55,010 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) [2022-02-10 23:05:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 4716 transitions. [2022-02-10 23:05:55,012 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 4716 transitions. Word has length 123 [2022-02-10 23:05:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:55,013 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 4716 transitions. [2022-02-10 23:05:55,013 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) [2022-02-10 23:05:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 4716 transitions. [2022-02-10 23:05:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:05:55,015 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:55,015 INFO L515 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] [2022-02-10 23:05:55,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:55,232 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 [2022-02-10 23:05:55,232 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:55,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:55,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1278814812, now seen corresponding path program 15 times [2022-02-10 23:05:55,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:55,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291054009] [2022-02-10 23:05:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:55,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:56,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:56,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291054009] [2022-02-10 23:05:56,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291054009] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:56,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883889887] [2022-02-10 23:05:56,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:05:56,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:56,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:56,207 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:56,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 23:05:56,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:05:56,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:56,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 23:05:56,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:56,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:05:56,433 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:05:56,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:05:56,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:05:56,818 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 [2022-02-10 23:05:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:05:57,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:57,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:05:57,365 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 [2022-02-10 23:05:57,368 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 [2022-02-10 23:05:57,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:05:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:05:57,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883889887] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:57,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:57,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 23, 23] total 62 [2022-02-10 23:05:57,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154486604] [2022-02-10 23:05:57,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:57,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-10 23:05:57,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-10 23:05:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3544, Unknown=4, NotChecked=0, Total=3782 [2022-02-10 23:05:57,988 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) [2022-02-10 23:06:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:00,085 INFO L93 Difference]: Finished difference Result 2837 states and 7111 transitions. [2022-02-10 23:06:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 23:06:00,085 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 [2022-02-10 23:06:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:00,089 INFO L225 Difference]: With dead ends: 2837 [2022-02-10 23:06:00,089 INFO L226 Difference]: Without dead ends: 2536 [2022-02-10 23:06:00,090 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=797, Invalid=10541, Unknown=4, NotChecked=0, Total=11342 [2022-02-10 23:06:00,090 INFO L934 BasicCegarLoop]: 153 mSDtfsCounter, 1267 mSDsluCounter, 5309 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:00,090 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 5055 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2685 Invalid, 0 Unknown, 216 Unchecked, 0.8s Time] [2022-02-10 23:06:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2022-02-10 23:06:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 1844. [2022-02-10 23:06:00,140 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) [2022-02-10 23:06:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 4607 transitions. [2022-02-10 23:06:00,142 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 4607 transitions. Word has length 123 [2022-02-10 23:06:00,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:00,156 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 4607 transitions. [2022-02-10 23:06:00,156 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) [2022-02-10 23:06:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 4607 transitions. [2022-02-10 23:06:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-10 23:06:00,159 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:00,159 INFO L515 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] [2022-02-10 23:06:00,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:00,372 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 [2022-02-10 23:06:00,373 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -577538978, now seen corresponding path program 16 times [2022-02-10 23:06:00,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:00,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634993441] [2022-02-10 23:06:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:01,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:01,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634993441] [2022-02-10 23:06:01,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634993441] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:01,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479585981] [2022-02-10 23:06:01,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:06:01,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:01,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:01,328 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:01,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 23:06:01,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:06:01,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:01,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 69 conjunts are in the unsatisfiable core [2022-02-10 23:06:01,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:01,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:06:01,495 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-10 23:06:01,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-02-10 23:06:01,855 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:06:01,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-02-10 23:06:01,969 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 [2022-02-10 23:06:02,075 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 [2022-02-10 23:06:02,337 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 [2022-02-10 23:06:02,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:06:02,593 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 [2022-02-10 23:06:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:02,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:04,733 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-02-10 23:06:04,733 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 [2022-02-10 23:06:04,749 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:04,749 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 [2022-02-10 23:06:04,760 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:04,760 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 [2022-02-10 23:06:04,771 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:04,771 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 [2022-02-10 23:06:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:08,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479585981] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:08,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:08,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33, 34] total 87 [2022-02-10 23:06:08,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55542991] [2022-02-10 23:06:08,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:08,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-10 23:06:08,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-10 23:06:08,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=973, Invalid=6400, Unknown=109, NotChecked=0, Total=7482 [2022-02-10 23:06:08,969 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) [2022-02-10 23:06:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:14,690 INFO L93 Difference]: Finished difference Result 3085 states and 7763 transitions. [2022-02-10 23:06:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 23:06:14,690 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 [2022-02-10 23:06:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:14,694 INFO L225 Difference]: With dead ends: 3085 [2022-02-10 23:06:14,694 INFO L226 Difference]: Without dead ends: 2704 [2022-02-10 23:06:14,695 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 202 SyntacticMatches, 5 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7283 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3004, Invalid=19720, Unknown=228, NotChecked=0, Total=22952 [2022-02-10 23:06:14,695 INFO L934 BasicCegarLoop]: 142 mSDtfsCounter, 2348 mSDsluCounter, 5681 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:14,695 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2348 Valid, 5211 Invalid, 4143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2130 Invalid, 0 Unknown, 1855 Unchecked, 1.0s Time] [2022-02-10 23:06:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2022-02-10 23:06:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1848. [2022-02-10 23:06:14,714 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) [2022-02-10 23:06:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4650 transitions. [2022-02-10 23:06:14,716 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4650 transitions. Word has length 123 [2022-02-10 23:06:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:14,717 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 4650 transitions. [2022-02-10 23:06:14,717 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) [2022-02-10 23:06:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4650 transitions. [2022-02-10 23:06:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-02-10 23:06:14,720 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:14,720 INFO L515 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] [2022-02-10 23:06:14,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:14,935 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 [2022-02-10 23:06:14,935 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2064524892, now seen corresponding path program 17 times [2022-02-10 23:06:14,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:14,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760662715] [2022-02-10 23:06:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:14,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:15,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:15,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760662715] [2022-02-10 23:06:15,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760662715] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:15,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906910401] [2022-02-10 23:06:15,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:06:15,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:15,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:15,048 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:15,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 23:06:15,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:06:15,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:15,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:06:15,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:15,384 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:06:15,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:06:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:06:15,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:15,545 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:06:15,546 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 [2022-02-10 23:06:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:06:15,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906910401] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:15,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:15,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 22 [2022-02-10 23:06:15,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248356632] [2022-02-10 23:06:15,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:15,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 23:06:15,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 23:06:15,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:06:15,819 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) [2022-02-10 23:06:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:16,217 INFO L93 Difference]: Finished difference Result 3304 states and 7718 transitions. [2022-02-10 23:06:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 23:06:16,218 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 [2022-02-10 23:06:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:16,221 INFO L225 Difference]: With dead ends: 3304 [2022-02-10 23:06:16,221 INFO L226 Difference]: Without dead ends: 3275 [2022-02-10 23:06:16,222 INFO L933 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 [2022-02-10 23:06:16,222 INFO L934 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 [2022-02-10 23:06:16,222 INFO L935 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] [2022-02-10 23:06:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2022-02-10 23:06:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2591. [2022-02-10 23:06:16,248 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) [2022-02-10 23:06:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 6403 transitions. [2022-02-10 23:06:16,252 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 6403 transitions. Word has length 127 [2022-02-10 23:06:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:16,252 INFO L470 AbstractCegarLoop]: Abstraction has 2591 states and 6403 transitions. [2022-02-10 23:06:16,252 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) [2022-02-10 23:06:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 6403 transitions. [2022-02-10 23:06:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-02-10 23:06:16,256 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:16,256 INFO L515 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] [2022-02-10 23:06:16,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:16,472 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 [2022-02-10 23:06:16,472 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash 945891334, now seen corresponding path program 18 times [2022-02-10 23:06:16,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:16,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342763522] [2022-02-10 23:06:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:16,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:16,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342763522] [2022-02-10 23:06:16,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342763522] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:16,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427745629] [2022-02-10 23:06:16,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:06:16,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:16,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:16,587 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:16,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 23:06:16,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:06:16,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:16,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 23:06:16,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-10 23:06:16,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:06:17,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427745629] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:17,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:17,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 7] total 21 [2022-02-10 23:06:17,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542282217] [2022-02-10 23:06:17,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:17,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:06:17,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:06:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:06:17,240 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) [2022-02-10 23:06:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:17,499 INFO L93 Difference]: Finished difference Result 3968 states and 9813 transitions. [2022-02-10 23:06:17,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 23:06:17,499 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 [2022-02-10 23:06:17,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:17,503 INFO L225 Difference]: With dead ends: 3968 [2022-02-10 23:06:17,503 INFO L226 Difference]: Without dead ends: 3138 [2022-02-10 23:06:17,503 INFO L933 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 [2022-02-10 23:06:17,504 INFO L934 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 [2022-02-10 23:06:17,505 INFO L935 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] [2022-02-10 23:06:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-02-10 23:06:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2079. [2022-02-10 23:06:17,529 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) [2022-02-10 23:06:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 5371 transitions. [2022-02-10 23:06:17,532 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 5371 transitions. Word has length 127 [2022-02-10 23:06:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:17,532 INFO L470 AbstractCegarLoop]: Abstraction has 2079 states and 5371 transitions. [2022-02-10 23:06:17,532 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) [2022-02-10 23:06:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 5371 transitions. [2022-02-10 23:06:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:06:17,535 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:17,535 INFO L515 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] [2022-02-10 23:06:17,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:17,751 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 [2022-02-10 23:06:17,751 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 53092897, now seen corresponding path program 19 times [2022-02-10 23:06:17,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:17,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749462339] [2022-02-10 23:06:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:17,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:18,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:18,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749462339] [2022-02-10 23:06:18,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749462339] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:18,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203642278] [2022-02-10 23:06:18,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:06:18,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:18,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:18,951 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:18,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 23:06:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:19,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-10 23:06:19,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:19,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:06:19,273 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:06:19,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:06:20,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:06:20,497 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 [2022-02-10 23:06:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:20,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:20,926 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 [2022-02-10 23:06:21,304 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:21,304 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 [2022-02-10 23:06:21,306 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 [2022-02-10 23:06:22,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:06:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:22,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203642278] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:22,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:22,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 90 [2022-02-10 23:06:22,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482329462] [2022-02-10 23:06:22,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:22,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-10 23:06:22,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-10 23:06:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=7327, Unknown=1, NotChecked=174, Total=8010 [2022-02-10 23:06:22,875 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) [2022-02-10 23:06:27,717 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_736 (Array Int Int))) (let ((.cse2 (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 ((.cse1 (+ c_~s~0 .cse2))) (and (<= .cse1 c_~N~0) (<= c_~N~0 .cse1))) (= .cse2 0)))))) (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1) (or (not (<= 0 c_~q_back~0)) (not (< c_~q_back~0 c_~n~0)) .cse0) (= c_~s~0 0) .cse0)) is different from false [2022-02-10 23:06:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:28,711 INFO L93 Difference]: Finished difference Result 4626 states and 12001 transitions. [2022-02-10 23:06:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 23:06:28,711 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 [2022-02-10 23:06:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:28,717 INFO L225 Difference]: With dead ends: 4626 [2022-02-10 23:06:28,717 INFO L226 Difference]: Without dead ends: 4162 [2022-02-10 23:06:28,718 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 221 SyntacticMatches, 12 SemanticMatches, 154 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 7937 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2114, Invalid=21444, Unknown=12, NotChecked=610, Total=24180 [2022-02-10 23:06:28,719 INFO L934 BasicCegarLoop]: 209 mSDtfsCounter, 2113 mSDsluCounter, 7794 mSDsCounter, 0 mSdLazyCounter, 3632 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 7239 SdHoareTripleChecker+Invalid, 5266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1483 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:28,720 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 7239 Invalid, 5266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3632 Invalid, 0 Unknown, 1483 Unchecked, 1.3s Time] [2022-02-10 23:06:28,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2022-02-10 23:06:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 2470. [2022-02-10 23:06:28,767 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) [2022-02-10 23:06:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 6342 transitions. [2022-02-10 23:06:28,771 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 6342 transitions. Word has length 130 [2022-02-10 23:06:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:28,771 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 6342 transitions. [2022-02-10 23:06:28,771 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) [2022-02-10 23:06:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 6342 transitions. [2022-02-10 23:06:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:06:28,774 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:28,775 INFO L515 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] [2022-02-10 23:06:28,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:28,992 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 [2022-02-10 23:06:28,992 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1694119649, now seen corresponding path program 20 times [2022-02-10 23:06:28,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:28,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662117302] [2022-02-10 23:06:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:30,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:30,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662117302] [2022-02-10 23:06:30,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662117302] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:30,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471367625] [2022-02-10 23:06:30,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:06:30,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:30,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:30,131 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:30,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 23:06:30,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:06:30,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:30,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-10 23:06:30,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:30,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:06:30,486 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:06:30,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:06:31,563 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 [2022-02-10 23:06:31,668 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 [2022-02-10 23:06:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:31,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:32,453 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:32,454 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 [2022-02-10 23:06:32,456 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 [2022-02-10 23:06:33,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:06:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:33,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471367625] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:33,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:33,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 89 [2022-02-10 23:06:33,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000495202] [2022-02-10 23:06:33,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:33,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-10 23:06:33,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-10 23:06:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=7327, Unknown=4, NotChecked=0, Total=7832 [2022-02-10 23:06:33,969 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) [2022-02-10 23:06:45,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:45,358 INFO L93 Difference]: Finished difference Result 5985 states and 15491 transitions. [2022-02-10 23:06:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-02-10 23:06:45,358 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 [2022-02-10 23:06:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:45,366 INFO L225 Difference]: With dead ends: 5985 [2022-02-10 23:06:45,366 INFO L226 Difference]: Without dead ends: 5556 [2022-02-10 23:06:45,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 210 SyntacticMatches, 24 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15394 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=3520, Invalid=37875, Unknown=17, NotChecked=0, Total=41412 [2022-02-10 23:06:45,369 INFO L934 BasicCegarLoop]: 213 mSDtfsCounter, 3295 mSDsluCounter, 9358 mSDsCounter, 0 mSdLazyCounter, 5381 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3295 SdHoareTripleChecker+Valid, 8834 SdHoareTripleChecker+Invalid, 7685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 5381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1947 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:45,369 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3295 Valid, 8834 Invalid, 7685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 5381 Invalid, 0 Unknown, 1947 Unchecked, 2.0s Time] [2022-02-10 23:06:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2022-02-10 23:06:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 2636. [2022-02-10 23:06:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 2.583681214421252) internal successors, (6808), 2635 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 6808 transitions. [2022-02-10 23:06:45,441 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 6808 transitions. Word has length 130 [2022-02-10 23:06:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:45,441 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 6808 transitions. [2022-02-10 23:06:45,442 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) [2022-02-10 23:06:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 6808 transitions. [2022-02-10 23:06:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:06:45,445 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:45,445 INFO L515 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] [2022-02-10 23:06:45,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:45,659 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 [2022-02-10 23:06:45,660 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash -910520801, now seen corresponding path program 21 times [2022-02-10 23:06:45,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:45,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967137106] [2022-02-10 23:06:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:46,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:46,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967137106] [2022-02-10 23:06:46,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967137106] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:46,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042126188] [2022-02-10 23:06:46,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:06:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:46,527 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:46,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 23:06:46,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:06:46,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-10 23:06:46,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:06:47,277 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 [2022-02-10 23:06:47,352 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 [2022-02-10 23:06:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:06:47,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:48,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:48,235 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 [2022-02-10 23:06:48,238 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 67 treesize of output 49 [2022-02-10 23:06:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:06:48,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042126188] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:48,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:48,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 23, 23] total 70 [2022-02-10 23:06:48,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182675656] [2022-02-10 23:06:48,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:48,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-10 23:06:48,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-10 23:06:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=4559, Unknown=4, NotChecked=0, Total=4830 [2022-02-10 23:06:48,985 INFO L87 Difference]: Start difference. First operand 2636 states and 6808 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) [2022-02-10 23:06:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:53,124 INFO L93 Difference]: Finished difference Result 3942 states and 10204 transitions. [2022-02-10 23:06:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 23:06:53,124 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 [2022-02-10 23:06:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:53,129 INFO L225 Difference]: With dead ends: 3942 [2022-02-10 23:06:53,129 INFO L226 Difference]: Without dead ends: 3724 [2022-02-10 23:06:53,131 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1386, Invalid=15122, Unknown=4, NotChecked=0, Total=16512 [2022-02-10 23:06:53,134 INFO L934 BasicCegarLoop]: 164 mSDtfsCounter, 1823 mSDsluCounter, 6755 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 6414 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:53,134 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 6414 Invalid, 4045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3712 Invalid, 0 Unknown, 222 Unchecked, 1.3s Time] [2022-02-10 23:06:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2022-02-10 23:06:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 2378. [2022-02-10 23:06:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 2.5797223390828776) internal successors, (6132), 2377 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6132 transitions. [2022-02-10 23:06:53,162 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6132 transitions. Word has length 130 [2022-02-10 23:06:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:53,163 INFO L470 AbstractCegarLoop]: Abstraction has 2378 states and 6132 transitions. [2022-02-10 23:06:53,163 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) [2022-02-10 23:06:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6132 transitions. [2022-02-10 23:06:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:06:53,166 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:53,166 INFO L515 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] [2022-02-10 23:06:53,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-10 23:06:53,378 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 [2022-02-10 23:06:53,379 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash 15567689, now seen corresponding path program 22 times [2022-02-10 23:06:53,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:53,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238467499] [2022-02-10 23:06:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:54,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:54,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238467499] [2022-02-10 23:06:54,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238467499] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:54,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647272640] [2022-02-10 23:06:54,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:06:54,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:54,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:54,642 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:54,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 23:06:54,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:06:54,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:54,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-10 23:06:54,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:54,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:06:54,895 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:06:54,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:06:55,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:06:55,523 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 [2022-02-10 23:06:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:06:55,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:56,029 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:56,029 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 [2022-02-10 23:06:56,031 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 [2022-02-10 23:06:56,033 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 [2022-02-10 23:06:56,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:06:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:06:56,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647272640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:56,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:56,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 61 [2022-02-10 23:06:56,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161609913] [2022-02-10 23:06:56,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:56,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:06:56,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:06:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=3429, Unknown=2, NotChecked=0, Total=3660 [2022-02-10 23:06:56,703 INFO L87 Difference]: Start difference. First operand 2378 states and 6132 transitions. Second operand has 61 states, 61 states have (on average 4.360655737704918) internal successors, (266), 61 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:00,119 INFO L93 Difference]: Finished difference Result 3637 states and 9416 transitions. [2022-02-10 23:07:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 23:07:00,120 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.360655737704918) internal successors, (266), 61 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have 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 [2022-02-10 23:07:00,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:00,124 INFO L225 Difference]: With dead ends: 3637 [2022-02-10 23:07:00,124 INFO L226 Difference]: Without dead ends: 3263 [2022-02-10 23:07:00,125 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 235 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3509 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1118, Invalid=11762, Unknown=2, NotChecked=0, Total=12882 [2022-02-10 23:07:00,127 INFO L934 BasicCegarLoop]: 172 mSDtfsCounter, 1425 mSDsluCounter, 5921 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 3447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:00,127 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 5599 Invalid, 3447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2820 Invalid, 0 Unknown, 533 Unchecked, 0.9s Time] [2022-02-10 23:07:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2022-02-10 23:07:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 2142. [2022-02-10 23:07:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 2141 states have (on average 2.535730966837926) internal successors, (5429), 2141 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 5429 transitions. [2022-02-10 23:07:00,157 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 5429 transitions. Word has length 130 [2022-02-10 23:07:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:00,157 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 5429 transitions. [2022-02-10 23:07:00,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.360655737704918) internal successors, (266), 61 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 5429 transitions. [2022-02-10 23:07:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:07:00,160 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:00,160 INFO L515 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] [2022-02-10 23:07:00,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:00,375 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 [2022-02-10 23:07:00,376 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1590563965, now seen corresponding path program 23 times [2022-02-10 23:07:00,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:00,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541284173] [2022-02-10 23:07:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:00,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:01,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:01,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541284173] [2022-02-10 23:07:01,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541284173] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:01,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762808993] [2022-02-10 23:07:01,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:07:01,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:01,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:01,603 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:01,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 23:07:01,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:07:01,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:01,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:07:01,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:01,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:07:01,853 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:01,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:07:02,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:07:02,370 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:07:02,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:07:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:07:02,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:02,788 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (and (forall ((v_ArrVal_871 (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_871) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_871 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_871) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (< c_~q_front~0 0) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-02-10 23:07:02,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:02,826 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 [2022-02-10 23:07:02,828 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 [2022-02-10 23:07:02,829 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 [2022-02-10 23:07:03,916 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 10 treesize of output 8 [2022-02-10 23:07:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:07:03,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762808993] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:03,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:03,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 22, 22] total 67 [2022-02-10 23:07:03,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895008891] [2022-02-10 23:07:03,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:03,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-10 23:07:03,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-10 23:07:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3961, Unknown=1, NotChecked=128, Total=4422 [2022-02-10 23:07:03,937 INFO L87 Difference]: Start difference. First operand 2142 states and 5429 transitions. Second operand has 67 states, 67 states have (on average 4.447761194029851) internal successors, (298), 67 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) [2022-02-10 23:07:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:07,029 INFO L93 Difference]: Finished difference Result 3243 states and 8286 transitions. [2022-02-10 23:07:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 23:07:07,029 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.447761194029851) internal successors, (298), 67 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 [2022-02-10 23:07:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:07,034 INFO L225 Difference]: With dead ends: 3243 [2022-02-10 23:07:07,034 INFO L226 Difference]: Without dead ends: 3048 [2022-02-10 23:07:07,035 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4116 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1333, Invalid=12242, Unknown=1, NotChecked=230, Total=13806 [2022-02-10 23:07:07,035 INFO L934 BasicCegarLoop]: 171 mSDtfsCounter, 1278 mSDsluCounter, 3797 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 765 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:07,035 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 3765 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1135 Invalid, 0 Unknown, 765 Unchecked, 0.5s Time] [2022-02-10 23:07:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2022-02-10 23:07:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 2160. [2022-02-10 23:07:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2159 states have (on average 2.539601667438629) internal successors, (5483), 2159 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 5483 transitions. [2022-02-10 23:07:07,064 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 5483 transitions. Word has length 130 [2022-02-10 23:07:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:07,064 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 5483 transitions. [2022-02-10 23:07:07,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.447761194029851) internal successors, (298), 67 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) [2022-02-10 23:07:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 5483 transitions. [2022-02-10 23:07:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:07:07,067 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:07,068 INFO L515 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] [2022-02-10 23:07:07,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-10 23:07:07,284 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 [2022-02-10 23:07:07,284 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1285835269, now seen corresponding path program 24 times [2022-02-10 23:07:07,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:07,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297767706] [2022-02-10 23:07:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:07,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:08,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:08,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297767706] [2022-02-10 23:07:08,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297767706] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:08,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900165518] [2022-02-10 23:07:08,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:07:08,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:08,455 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:08,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 23:07:08,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:07:08,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:08,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-10 23:07:08,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:08,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:07:08,687 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:08,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:07:09,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:07:09,173 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 [2022-02-10 23:07:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:07:09,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:09,645 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:09,646 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 82 treesize of output 74 [2022-02-10 23:07:09,652 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 [2022-02-10 23:07:09,654 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 [2022-02-10 23:07:10,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:07:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:07:10,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900165518] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:10,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:10,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 60 [2022-02-10 23:07:10,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691045509] [2022-02-10 23:07:10,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:10,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-10 23:07:10,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-10 23:07:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3320, Unknown=3, NotChecked=0, Total=3540 [2022-02-10 23:07:10,211 INFO L87 Difference]: Start difference. First operand 2160 states and 5483 transitions. Second operand has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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) [2022-02-10 23:07:12,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:12,988 INFO L93 Difference]: Finished difference Result 3184 states and 8182 transitions. [2022-02-10 23:07:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 23:07:12,988 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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 130 [2022-02-10 23:07:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:12,993 INFO L225 Difference]: With dead ends: 3184 [2022-02-10 23:07:12,993 INFO L226 Difference]: Without dead ends: 3046 [2022-02-10 23:07:12,994 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 233 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3664 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=923, Invalid=12183, Unknown=4, NotChecked=0, Total=13110 [2022-02-10 23:07:12,994 INFO L934 BasicCegarLoop]: 158 mSDtfsCounter, 1115 mSDsluCounter, 5408 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 5161 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 462 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:12,994 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 5161 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2752 Invalid, 0 Unknown, 462 Unchecked, 0.9s Time] [2022-02-10 23:07:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-02-10 23:07:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2070. [2022-02-10 23:07:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2069 states have (on average 2.527791203479942) internal successors, (5230), 2069 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5230 transitions. [2022-02-10 23:07:13,023 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5230 transitions. Word has length 130 [2022-02-10 23:07:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:13,023 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5230 transitions. [2022-02-10 23:07:13,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 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) [2022-02-10 23:07:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5230 transitions. [2022-02-10 23:07:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:07:13,026 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:13,026 INFO L515 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] [2022-02-10 23:07:13,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:13,239 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 [2022-02-10 23:07:13,240 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 4021751, now seen corresponding path program 25 times [2022-02-10 23:07:13,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:13,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819719099] [2022-02-10 23:07:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:14,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:14,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819719099] [2022-02-10 23:07:14,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819719099] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:14,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018283532] [2022-02-10 23:07:14,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:07:14,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:14,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:14,382 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:14,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 23:07:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:14,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-10 23:07:14,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:14,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:07:14,790 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:14,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:07:15,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:07:15,769 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 [2022-02-10 23:07:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:16,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:16,986 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:16,986 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 [2022-02-10 23:07:16,989 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 [2022-02-10 23:07:18,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:07:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:18,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018283532] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:18,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:18,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 90 [2022-02-10 23:07:18,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814738717] [2022-02-10 23:07:18,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:18,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-10 23:07:18,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:18,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-10 23:07:18,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=7510, Unknown=3, NotChecked=0, Total=8010 [2022-02-10 23:07:18,609 INFO L87 Difference]: Start difference. First operand 2070 states and 5230 transitions. Second operand has 90 states, 90 states have (on average 3.6) internal successors, (324), 90 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) [2022-02-10 23:07:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:24,524 INFO L93 Difference]: Finished difference Result 3349 states and 8498 transitions. [2022-02-10 23:07:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-10 23:07:24,524 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.6) internal successors, (324), 90 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 130 [2022-02-10 23:07:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:24,543 INFO L225 Difference]: With dead ends: 3349 [2022-02-10 23:07:24,544 INFO L226 Difference]: Without dead ends: 2947 [2022-02-10 23:07:24,545 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 202 SyntacticMatches, 10 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8496 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2360, Invalid=24043, Unknown=3, NotChecked=0, Total=26406 [2022-02-10 23:07:24,546 INFO L934 BasicCegarLoop]: 170 mSDtfsCounter, 2612 mSDsluCounter, 7315 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 6901 SdHoareTripleChecker+Invalid, 4697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 627 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:24,547 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2612 Valid, 6901 Invalid, 4697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 3864 Invalid, 0 Unknown, 627 Unchecked, 1.4s Time] [2022-02-10 23:07:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2022-02-10 23:07:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2090. [2022-02-10 23:07:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 2.5318334131163236) internal successors, (5289), 2089 states have internal predecessors, (5289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 5289 transitions. [2022-02-10 23:07:24,573 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 5289 transitions. Word has length 130 [2022-02-10 23:07:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:24,573 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 5289 transitions. [2022-02-10 23:07:24,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.6) internal successors, (324), 90 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) [2022-02-10 23:07:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 5289 transitions. [2022-02-10 23:07:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-10 23:07:24,576 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:24,576 INFO L515 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] [2022-02-10 23:07:24,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-10 23:07:24,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:24,792 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash -812757993, now seen corresponding path program 26 times [2022-02-10 23:07:24,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:24,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754669186] [2022-02-10 23:07:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:25,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:25,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754669186] [2022-02-10 23:07:25,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754669186] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:25,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28168947] [2022-02-10 23:07:25,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:07:25,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:25,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:25,861 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:25,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 23:07:25,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:07:25,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:25,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-10 23:07:25,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:26,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:07:26,232 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:26,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:07:27,280 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 [2022-02-10 23:07:27,409 INFO L353 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size [2022-02-10 23:07:27,409 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 25 treesize of output 10 [2022-02-10 23:07:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:27,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:28,411 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:28,411 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 [2022-02-10 23:07:28,414 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 67 treesize of output 49 [2022-02-10 23:07:30,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:07:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:30,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28168947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:30,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:30,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 88 [2022-02-10 23:07:30,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178537637] [2022-02-10 23:07:30,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:30,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-10 23:07:30,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-10 23:07:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=7138, Unknown=3, NotChecked=0, Total=7656 [2022-02-10 23:07:30,522 INFO L87 Difference]: Start difference. First operand 2090 states and 5289 transitions. Second operand has 88 states, 88 states have (on average 3.5) internal successors, (308), 88 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) [2022-02-10 23:07:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:37,471 INFO L93 Difference]: Finished difference Result 3832 states and 9827 transitions. [2022-02-10 23:07:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-10 23:07:37,471 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.5) internal successors, (308), 88 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 [2022-02-10 23:07:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:37,477 INFO L225 Difference]: With dead ends: 3832 [2022-02-10 23:07:37,477 INFO L226 Difference]: Without dead ends: 3575 [2022-02-10 23:07:37,478 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 202 SyntacticMatches, 12 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9650 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2406, Invalid=25972, Unknown=14, NotChecked=0, Total=28392 [2022-02-10 23:07:37,479 INFO L934 BasicCegarLoop]: 180 mSDtfsCounter, 2263 mSDsluCounter, 7885 mSDsCounter, 0 mSdLazyCounter, 4213 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 7519 SdHoareTripleChecker+Invalid, 5446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 4213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1042 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:37,479 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2263 Valid, 7519 Invalid, 5446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 4213 Invalid, 0 Unknown, 1042 Unchecked, 1.6s Time] [2022-02-10 23:07:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2022-02-10 23:07:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 2249. [2022-02-10 23:07:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 2248 states have (on average 2.5596085409252667) internal successors, (5754), 2248 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 5754 transitions. [2022-02-10 23:07:37,513 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 5754 transitions. Word has length 130 [2022-02-10 23:07:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:37,513 INFO L470 AbstractCegarLoop]: Abstraction has 2249 states and 5754 transitions. [2022-02-10 23:07:37,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.5) internal successors, (308), 88 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) [2022-02-10 23:07:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 5754 transitions. [2022-02-10 23:07:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-10 23:07:37,516 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:37,516 INFO L515 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] [2022-02-10 23:07:37,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:37,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-02-10 23:07:37,722 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:37,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash -491141122, now seen corresponding path program 27 times [2022-02-10 23:07:37,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:37,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066770186] [2022-02-10 23:07:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:38,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:38,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066770186] [2022-02-10 23:07:38,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066770186] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:38,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194926573] [2022-02-10 23:07:38,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:07:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:38,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:38,758 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:38,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 23:07:38,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:07:38,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:38,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 23:07:38,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:39,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:07:39,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:07:39,634 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:07:39,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:07:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:07:39,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:40,063 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:40,063 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 [2022-02-10 23:07:40,066 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 [2022-02-10 23:07:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:07:40,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194926573] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:40,860 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:40,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 14, 14] total 52 [2022-02-10 23:07:40,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886494595] [2022-02-10 23:07:40,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:40,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-10 23:07:40,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:40,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-10 23:07:40,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2461, Unknown=2, NotChecked=0, Total=2652 [2022-02-10 23:07:40,861 INFO L87 Difference]: Start difference. First operand 2249 states and 5754 transitions. Second operand has 52 states, 52 states have (on average 5.923076923076923) internal successors, (308), 52 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) [2022-02-10 23:07:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:45,507 INFO L93 Difference]: Finished difference Result 5867 states and 15611 transitions. [2022-02-10 23:07:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 23:07:45,507 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.923076923076923) internal successors, (308), 52 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 135 [2022-02-10 23:07:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:45,514 INFO L225 Difference]: With dead ends: 5867 [2022-02-10 23:07:45,515 INFO L226 Difference]: Without dead ends: 5795 [2022-02-10 23:07:45,516 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 257 SyntacticMatches, 8 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1448, Invalid=9676, Unknown=6, NotChecked=0, Total=11130 [2022-02-10 23:07:45,516 INFO L934 BasicCegarLoop]: 184 mSDtfsCounter, 1840 mSDsluCounter, 5889 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 5852 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:45,516 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 5852 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1253 Invalid, 0 Unknown, 475 Unchecked, 0.6s Time] [2022-02-10 23:07:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2022-02-10 23:07:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 3450. [2022-02-10 23:07:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 2.6485937953029866) internal successors, (9135), 3449 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 9135 transitions. [2022-02-10 23:07:45,608 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 9135 transitions. Word has length 135 [2022-02-10 23:07:45,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:45,608 INFO L470 AbstractCegarLoop]: Abstraction has 3450 states and 9135 transitions. [2022-02-10 23:07:45,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.923076923076923) internal successors, (308), 52 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) [2022-02-10 23:07:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 9135 transitions. [2022-02-10 23:07:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-10 23:07:45,614 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:45,614 INFO L515 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] [2022-02-10 23:07:45,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-10 23:07:45,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:45,823 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1444166304, now seen corresponding path program 28 times [2022-02-10 23:07:45,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:45,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916523862] [2022-02-10 23:07:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:46,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:46,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916523862] [2022-02-10 23:07:46,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916523862] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:46,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173000561] [2022-02-10 23:07:46,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:07:46,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:46,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:46,383 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:46,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 23:07:46,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:07:46,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:46,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:07:46,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:46,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:07:46,671 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:46,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:07:47,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:07:47,667 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:47,668 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 [2022-02-10 23:07:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:47,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:47,992 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:47,993 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 [2022-02-10 23:07:47,994 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 [2022-02-10 23:07:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:49,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173000561] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:49,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:49,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 68 [2022-02-10 23:07:49,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033943613] [2022-02-10 23:07:49,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:49,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-10 23:07:49,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-10 23:07:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=4126, Unknown=15, NotChecked=0, Total=4556 [2022-02-10 23:07:49,579 INFO L87 Difference]: Start difference. First operand 3450 states and 9135 transitions. Second operand has 68 states, 68 states have (on average 4.8088235294117645) internal successors, (327), 68 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) [2022-02-10 23:07:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:55,997 INFO L93 Difference]: Finished difference Result 12044 states and 33964 transitions. [2022-02-10 23:07:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 23:07:55,997 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.8088235294117645) internal successors, (327), 68 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 135 [2022-02-10 23:07:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:56,015 INFO L225 Difference]: With dead ends: 12044 [2022-02-10 23:07:56,016 INFO L226 Difference]: Without dead ends: 12044 [2022-02-10 23:07:56,016 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 238 SyntacticMatches, 31 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5962 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2420, Invalid=14857, Unknown=15, NotChecked=0, Total=17292 [2022-02-10 23:07:56,017 INFO L934 BasicCegarLoop]: 232 mSDtfsCounter, 2380 mSDsluCounter, 8036 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 7887 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:56,017 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2380 Valid, 7887 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2592 Invalid, 0 Unknown, 620 Unchecked, 1.0s Time] [2022-02-10 23:07:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12044 states. [2022-02-10 23:07:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12044 to 8341. [2022-02-10 23:07:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 8340 states have (on average 2.875779376498801) internal successors, (23984), 8340 states have internal predecessors, (23984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 23984 transitions. [2022-02-10 23:07:56,177 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 23984 transitions. Word has length 135 [2022-02-10 23:07:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:56,177 INFO L470 AbstractCegarLoop]: Abstraction has 8341 states and 23984 transitions. [2022-02-10 23:07:56,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.8088235294117645) internal successors, (327), 68 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) [2022-02-10 23:07:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 23984 transitions. [2022-02-10 23:07:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-10 23:07:56,188 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:56,188 INFO L515 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] [2022-02-10 23:07:56,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:56,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:56,394 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash 442989216, now seen corresponding path program 29 times [2022-02-10 23:07:56,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:56,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137134144] [2022-02-10 23:07:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:56,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:56,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137134144] [2022-02-10 23:07:56,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137134144] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:56,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835293288] [2022-02-10 23:07:56,930 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:07:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:56,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:56,931 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:56,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 23:07:57,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:07:57,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:57,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:07:57,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:57,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:07:57,214 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:57,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:07:57,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:07:58,232 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:07:58,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:07:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:58,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:58,517 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:58,517 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 [2022-02-10 23:07:58,519 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 [2022-02-10 23:08:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:00,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835293288] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:00,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:00,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 68 [2022-02-10 23:08:00,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987297088] [2022-02-10 23:08:00,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:00,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-10 23:08:00,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-10 23:08:00,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=4157, Unknown=10, NotChecked=0, Total=4556 [2022-02-10 23:08:00,767 INFO L87 Difference]: Start difference. First operand 8341 states and 23984 transitions. Second operand has 68 states, 68 states have (on average 4.867647058823529) internal successors, (331), 68 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:04,280 INFO L93 Difference]: Finished difference Result 16713 states and 47627 transitions. [2022-02-10 23:08:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 23:08:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.867647058823529) internal successors, (331), 68 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 [2022-02-10 23:08:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:04,308 INFO L225 Difference]: With dead ends: 16713 [2022-02-10 23:08:04,308 INFO L226 Difference]: Without dead ends: 16713 [2022-02-10 23:08:04,309 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 245 SyntacticMatches, 11 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1856, Invalid=12896, Unknown=10, NotChecked=0, Total=14762 [2022-02-10 23:08:04,310 INFO L934 BasicCegarLoop]: 194 mSDtfsCounter, 2050 mSDsluCounter, 6120 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 710 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:04,310 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 5930 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1947 Invalid, 0 Unknown, 710 Unchecked, 0.7s Time] [2022-02-10 23:08:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16713 states. [2022-02-10 23:08:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16713 to 12621. [2022-02-10 23:08:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12621 states, 12620 states have (on average 2.925515055467512) internal successors, (36920), 12620 states have internal predecessors, (36920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12621 states to 12621 states and 36920 transitions. [2022-02-10 23:08:04,542 INFO L78 Accepts]: Start accepts. Automaton has 12621 states and 36920 transitions. Word has length 135 [2022-02-10 23:08:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:04,542 INFO L470 AbstractCegarLoop]: Abstraction has 12621 states and 36920 transitions. [2022-02-10 23:08:04,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.867647058823529) internal successors, (331), 68 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 12621 states and 36920 transitions. [2022-02-10 23:08:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-10 23:08:04,557 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:04,558 INFO L515 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] [2022-02-10 23:08:04,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:04,774 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 [2022-02-10 23:08:04,775 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 367404166, now seen corresponding path program 30 times [2022-02-10 23:08:04,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:04,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833281660] [2022-02-10 23:08:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:04,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:05,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:05,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833281660] [2022-02-10 23:08:05,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833281660] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:05,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838383268] [2022-02-10 23:08:05,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:08:05,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:05,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:05,428 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:05,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 23:08:05,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:08:05,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:05,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 23:08:05,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:06,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:08:06,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:08:06,316 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:08:06,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:08:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:08:06,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:06,669 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:06,670 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 [2022-02-10 23:08:06,672 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 [2022-02-10 23:08:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:08:07,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838383268] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:07,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:07,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 49 [2022-02-10 23:08:07,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828474894] [2022-02-10 23:08:07,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:07,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 23:08:07,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 23:08:07,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 23:08:07,646 INFO L87 Difference]: Start difference. First operand 12621 states and 36920 transitions. Second operand has 49 states, 49 states have (on average 6.285714285714286) internal successors, (308), 49 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) [2022-02-10 23:08:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:09,619 INFO L93 Difference]: Finished difference Result 13362 states and 38806 transitions. [2022-02-10 23:08:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 23:08:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.285714285714286) internal successors, (308), 49 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 135 [2022-02-10 23:08:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:09,643 INFO L225 Difference]: With dead ends: 13362 [2022-02-10 23:08:09,643 INFO L226 Difference]: Without dead ends: 13359 [2022-02-10 23:08:09,644 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1024, Invalid=6458, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 23:08:09,644 INFO L934 BasicCegarLoop]: 160 mSDtfsCounter, 1397 mSDsluCounter, 4082 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:09,644 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 4141 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 670 Invalid, 0 Unknown, 231 Unchecked, 0.3s Time] [2022-02-10 23:08:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13359 states. [2022-02-10 23:08:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13359 to 12653. [2022-02-10 23:08:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12653 states, 12652 states have (on average 2.92349035725577) internal successors, (36988), 12652 states have internal predecessors, (36988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12653 states to 12653 states and 36988 transitions. [2022-02-10 23:08:09,826 INFO L78 Accepts]: Start accepts. Automaton has 12653 states and 36988 transitions. Word has length 135 [2022-02-10 23:08:09,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:09,827 INFO L470 AbstractCegarLoop]: Abstraction has 12653 states and 36988 transitions. [2022-02-10 23:08:09,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.285714285714286) internal successors, (308), 49 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) [2022-02-10 23:08:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand 12653 states and 36988 transitions. [2022-02-10 23:08:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-10 23:08:09,840 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:09,841 INFO L515 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] [2022-02-10 23:08:09,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:10,042 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 [2022-02-10 23:08:10,043 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash -212630346, now seen corresponding path program 31 times [2022-02-10 23:08:10,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:10,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591635483] [2022-02-10 23:08:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:10,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:10,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591635483] [2022-02-10 23:08:10,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591635483] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:10,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883736195] [2022-02-10 23:08:10,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:08:10,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:10,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:10,684 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:10,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 23:08:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:10,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 58 conjunts are in the unsatisfiable core [2022-02-10 23:08:10,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:10,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:08:11,215 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:08:11,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:08:12,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:08:12,328 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:12,328 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 [2022-02-10 23:08:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:12,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:12,731 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:12,732 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 [2022-02-10 23:08:12,734 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 [2022-02-10 23:08:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:14,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883736195] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:14,976 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:14,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29, 28] total 73 [2022-02-10 23:08:14,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231471905] [2022-02-10 23:08:14,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:14,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-10 23:08:14,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-10 23:08:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=4717, Unknown=11, NotChecked=0, Total=5256 [2022-02-10 23:08:14,978 INFO L87 Difference]: Start difference. First operand 12653 states and 36988 transitions. Second operand has 73 states, 73 states have (on average 4.410958904109589) internal successors, (322), 73 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) [2022-02-10 23:08:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:20,886 INFO L93 Difference]: Finished difference Result 28875 states and 84671 transitions. [2022-02-10 23:08:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 23:08:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.410958904109589) internal successors, (322), 73 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 135 [2022-02-10 23:08:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:20,956 INFO L225 Difference]: With dead ends: 28875 [2022-02-10 23:08:20,956 INFO L226 Difference]: Without dead ends: 28683 [2022-02-10 23:08:20,957 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 229 SyntacticMatches, 26 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5330 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2279, Invalid=14740, Unknown=11, NotChecked=0, Total=17030 [2022-02-10 23:08:20,958 INFO L934 BasicCegarLoop]: 178 mSDtfsCounter, 2062 mSDsluCounter, 6041 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 5963 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 693 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:20,958 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 5963 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2143 Invalid, 0 Unknown, 693 Unchecked, 0.9s Time] [2022-02-10 23:08:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28683 states. [2022-02-10 23:08:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28683 to 20424. [2022-02-10 23:08:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20424 states, 20423 states have (on average 2.9353669881995788) internal successors, (59949), 20423 states have internal predecessors, (59949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20424 states to 20424 states and 59949 transitions. [2022-02-10 23:08:21,408 INFO L78 Accepts]: Start accepts. Automaton has 20424 states and 59949 transitions. Word has length 135 [2022-02-10 23:08:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:21,408 INFO L470 AbstractCegarLoop]: Abstraction has 20424 states and 59949 transitions. [2022-02-10 23:08:21,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.410958904109589) internal successors, (322), 73 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) [2022-02-10 23:08:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20424 states and 59949 transitions. [2022-02-10 23:08:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-10 23:08:21,433 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:21,434 INFO L515 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] [2022-02-10 23:08:21,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:21,635 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 [2022-02-10 23:08:21,635 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1470786520, now seen corresponding path program 32 times [2022-02-10 23:08:21,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:21,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807069181] [2022-02-10 23:08:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:22,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:22,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807069181] [2022-02-10 23:08:22,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807069181] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:22,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420044297] [2022-02-10 23:08:22,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:08:22,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:22,393 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:22,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 23:08:22,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:08:22,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:22,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-10 23:08:22,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:23,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:08:23,351 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 19 treesize of output 21 [2022-02-10 23:08:23,575 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 [2022-02-10 23:08:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:23,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:23,874 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:23,874 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 [2022-02-10 23:08:23,876 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 [2022-02-10 23:08:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:25,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420044297] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:25,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:25,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 71 [2022-02-10 23:08:25,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409694629] [2022-02-10 23:08:25,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:25,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-10 23:08:25,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-10 23:08:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=4553, Unknown=13, NotChecked=0, Total=4970 [2022-02-10 23:08:25,587 INFO L87 Difference]: Start difference. First operand 20424 states and 59949 transitions. Second operand has 71 states, 71 states have (on average 4.830985915492958) internal successors, (343), 71 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:36,985 INFO L93 Difference]: Finished difference Result 49299 states and 139915 transitions. [2022-02-10 23:08:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-10 23:08:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.830985915492958) internal successors, (343), 71 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-02-10 23:08:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:37,100 INFO L225 Difference]: With dead ends: 49299 [2022-02-10 23:08:37,100 INFO L226 Difference]: Without dead ends: 49215 [2022-02-10 23:08:37,101 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6329 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4301, Invalid=21768, Unknown=13, NotChecked=0, Total=26082 [2022-02-10 23:08:37,115 INFO L934 BasicCegarLoop]: 367 mSDtfsCounter, 4742 mSDsluCounter, 12256 mSDsCounter, 0 mSdLazyCounter, 4830 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4742 SdHoareTripleChecker+Valid, 11707 SdHoareTripleChecker+Invalid, 5839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 4830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:37,115 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4742 Valid, 11707 Invalid, 5839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 4830 Invalid, 0 Unknown, 343 Unchecked, 2.0s Time] [2022-02-10 23:08:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49215 states. [2022-02-10 23:08:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49215 to 18822. [2022-02-10 23:08:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18822 states, 18821 states have (on average 2.9386323787258912) internal successors, (55308), 18821 states have internal predecessors, (55308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18822 states to 18822 states and 55308 transitions. [2022-02-10 23:08:37,633 INFO L78 Accepts]: Start accepts. Automaton has 18822 states and 55308 transitions. Word has length 135 [2022-02-10 23:08:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:37,634 INFO L470 AbstractCegarLoop]: Abstraction has 18822 states and 55308 transitions. [2022-02-10 23:08:37,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.830985915492958) internal successors, (343), 71 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 18822 states and 55308 transitions. [2022-02-10 23:08:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-10 23:08:37,657 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:37,657 INFO L515 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] [2022-02-10 23:08:37,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-10 23:08:37,871 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 [2022-02-10 23:08:37,871 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:37,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:37,872 INFO L85 PathProgramCache]: Analyzing trace with hash -585841728, now seen corresponding path program 33 times [2022-02-10 23:08:37,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:37,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332663001] [2022-02-10 23:08:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:37,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:39,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:39,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332663001] [2022-02-10 23:08:39,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332663001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:39,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424469443] [2022-02-10 23:08:39,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:08:39,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:39,404 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:39,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 23:08:39,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:08:39,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:39,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-10 23:08:39,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:40,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:08:40,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:08:40,693 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:08:40,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:08:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:08:40,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:41,115 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1211 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1211) 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))) (= 0 .cse1)))) is different from false [2022-02-10 23:08:41,373 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:41,374 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 [2022-02-10 23:08:41,376 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 67 treesize of output 49 [2022-02-10 23:08:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:08:42,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424469443] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:42,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:42,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 23, 23] total 68 [2022-02-10 23:08:42,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558215487] [2022-02-10 23:08:42,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:42,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-10 23:08:42,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:42,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-10 23:08:42,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=4149, Unknown=1, NotChecked=130, Total=4556 [2022-02-10 23:08:42,044 INFO L87 Difference]: Start difference. First operand 18822 states and 55308 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) [2022-02-10 23:08:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:45,624 INFO L93 Difference]: Finished difference Result 25442 states and 74107 transitions. [2022-02-10 23:08:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 23:08:45,624 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 137 [2022-02-10 23:08:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:45,679 INFO L225 Difference]: With dead ends: 25442 [2022-02-10 23:08:45,679 INFO L226 Difference]: Without dead ends: 25078 [2022-02-10 23:08:45,680 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 246 SyntacticMatches, 9 SemanticMatches, 115 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3757 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1302, Invalid=12041, Unknown=1, NotChecked=228, Total=13572 [2022-02-10 23:08:45,680 INFO L934 BasicCegarLoop]: 172 mSDtfsCounter, 1772 mSDsluCounter, 6470 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 6044 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1158 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:45,680 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1772 Valid, 6044 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2268 Invalid, 0 Unknown, 1158 Unchecked, 0.7s Time] [2022-02-10 23:08:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25078 states. [2022-02-10 23:08:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25078 to 18760. [2022-02-10 23:08:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18760 states, 18759 states have (on average 2.941094941094941) internal successors, (55172), 18759 states have internal predecessors, (55172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18760 states to 18760 states and 55172 transitions. [2022-02-10 23:08:46,090 INFO L78 Accepts]: Start accepts. Automaton has 18760 states and 55172 transitions. Word has length 137 [2022-02-10 23:08:46,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:46,090 INFO L470 AbstractCegarLoop]: Abstraction has 18760 states and 55172 transitions. [2022-02-10 23:08:46,090 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) [2022-02-10 23:08:46,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18760 states and 55172 transitions. [2022-02-10 23:08:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-10 23:08:46,114 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:46,114 INFO L515 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] [2022-02-10 23:08:46,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:46,315 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 [2022-02-10 23:08:46,315 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash -464051704, now seen corresponding path program 34 times [2022-02-10 23:08:46,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:46,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374330972] [2022-02-10 23:08:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:46,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:47,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:47,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374330972] [2022-02-10 23:08:47,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374330972] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:47,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640860575] [2022-02-10 23:08:47,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:08:47,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:47,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:47,777 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:47,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 23:08:47,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:08:47,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:47,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 23:08:47,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:47,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:08:48,042 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:08:48,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:08:48,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:08:48,506 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 [2022-02-10 23:08:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:08:48,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:49,120 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:49,120 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 [2022-02-10 23:08:49,123 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 [2022-02-10 23:08:49,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:08:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:08:49,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640860575] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:49,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:49,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 23, 23] total 65 [2022-02-10 23:08:49,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711186552] [2022-02-10 23:08:49,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:49,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-10 23:08:49,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-10 23:08:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3883, Unknown=4, NotChecked=0, Total=4160 [2022-02-10 23:08:49,728 INFO L87 Difference]: Start difference. First operand 18760 states and 55172 transitions. Second operand has 65 states, 65 states have (on average 4.338461538461538) internal successors, (282), 65 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:53,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:53,240 INFO L93 Difference]: Finished difference Result 27882 states and 80497 transitions. [2022-02-10 23:08:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 23:08:53,241 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.338461538461538) internal successors, (282), 65 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have 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 [2022-02-10 23:08:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:53,297 INFO L225 Difference]: With dead ends: 27882 [2022-02-10 23:08:53,297 INFO L226 Difference]: Without dead ends: 27717 [2022-02-10 23:08:53,298 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 255 SyntacticMatches, 5 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5055 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1734, Invalid=15552, Unknown=6, NotChecked=0, Total=17292 [2022-02-10 23:08:53,315 INFO L934 BasicCegarLoop]: 173 mSDtfsCounter, 2298 mSDsluCounter, 5200 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 4884 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 657 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:53,315 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 4884 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2687 Invalid, 0 Unknown, 657 Unchecked, 0.8s Time] [2022-02-10 23:08:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27717 states. [2022-02-10 23:08:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27717 to 18693. [2022-02-10 23:08:53,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18693 states, 18692 states have (on average 2.9414722876096726) internal successors, (54982), 18692 states have internal predecessors, (54982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18693 states to 18693 states and 54982 transitions. [2022-02-10 23:08:53,683 INFO L78 Accepts]: Start accepts. Automaton has 18693 states and 54982 transitions. Word has length 137 [2022-02-10 23:08:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:53,684 INFO L470 AbstractCegarLoop]: Abstraction has 18693 states and 54982 transitions. [2022-02-10 23:08:53,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.338461538461538) internal successors, (282), 65 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 18693 states and 54982 transitions. [2022-02-10 23:08:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-10 23:08:53,706 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:53,707 INFO L515 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] [2022-02-10 23:08:53,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:53,919 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 [2022-02-10 23:08:53,920 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1952880244, now seen corresponding path program 35 times [2022-02-10 23:08:53,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:53,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525784839] [2022-02-10 23:08:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:55,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:55,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525784839] [2022-02-10 23:08:55,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525784839] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:55,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882111649] [2022-02-10 23:08:55,434 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:08:55,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:55,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:55,435 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:55,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 23:08:55,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:08:55,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:55,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 55 conjunts are in the unsatisfiable core [2022-02-10 23:08:55,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:56,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:08:56,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:08:56,632 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 [2022-02-10 23:08:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:08:56,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:57,151 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:57,151 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 [2022-02-10 23:08:57,153 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 [2022-02-10 23:08:57,155 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 [2022-02-10 23:08:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:08:57,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882111649] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:57,988 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:57,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 28, 22] total 73 [2022-02-10 23:08:57,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459449082] [2022-02-10 23:08:57,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:57,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-10 23:08:57,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:57,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-10 23:08:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=4959, Unknown=2, NotChecked=0, Total=5256 [2022-02-10 23:08:57,990 INFO L87 Difference]: Start difference. First operand 18693 states and 54982 transitions. Second operand has 73 states, 73 states have (on average 4.3561643835616435) internal successors, (318), 73 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) [2022-02-10 23:09:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:02,221 INFO L93 Difference]: Finished difference Result 25712 states and 74561 transitions. [2022-02-10 23:09:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 23:09:02,222 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.3561643835616435) internal successors, (318), 73 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 137 [2022-02-10 23:09:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:02,290 INFO L225 Difference]: With dead ends: 25712 [2022-02-10 23:09:02,290 INFO L226 Difference]: Without dead ends: 25387 [2022-02-10 23:09:02,291 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 240 SyntacticMatches, 7 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1531, Invalid=15759, Unknown=2, NotChecked=0, Total=17292 [2022-02-10 23:09:02,292 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 1907 mSDsluCounter, 6599 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 6115 SdHoareTripleChecker+Invalid, 4526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1251 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:02,292 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1907 Valid, 6115 Invalid, 4526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3182 Invalid, 0 Unknown, 1251 Unchecked, 1.1s Time] [2022-02-10 23:09:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25387 states. [2022-02-10 23:09:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25387 to 18549. [2022-02-10 23:09:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18549 states, 18548 states have (on average 2.947164114729351) internal successors, (54664), 18548 states have internal predecessors, (54664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18549 states to 18549 states and 54664 transitions. [2022-02-10 23:09:02,632 INFO L78 Accepts]: Start accepts. Automaton has 18549 states and 54664 transitions. Word has length 137 [2022-02-10 23:09:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:02,632 INFO L470 AbstractCegarLoop]: Abstraction has 18549 states and 54664 transitions. [2022-02-10 23:09:02,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.3561643835616435) internal successors, (318), 73 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) [2022-02-10 23:09:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 18549 states and 54664 transitions. [2022-02-10 23:09:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-10 23:09:02,655 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:02,656 INFO L515 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] [2022-02-10 23:09:02,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-10 23:09:02,871 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 [2022-02-10 23:09:02,872 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash 619866752, now seen corresponding path program 36 times [2022-02-10 23:09:02,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:02,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258568749] [2022-02-10 23:09:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:03,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:03,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258568749] [2022-02-10 23:09:03,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258568749] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:03,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824572087] [2022-02-10 23:09:03,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:09:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:03,850 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:03,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 23:09:03,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:09:03,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:03,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-10 23:09:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:04,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:09:04,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:09:04,709 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:09:04,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:09:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:09:04,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:05,200 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:09:05,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 74 [2022-02-10 23:09:05,203 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 [2022-02-10 23:09:05,204 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 [2022-02-10 23:09:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:09:06,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824572087] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:06,203 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:06,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 22, 22] total 67 [2022-02-10 23:09:06,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376249975] [2022-02-10 23:09:06,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:06,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-10 23:09:06,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-10 23:09:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=4149, Unknown=3, NotChecked=0, Total=4422 [2022-02-10 23:09:06,205 INFO L87 Difference]: Start difference. First operand 18549 states and 54664 transitions. Second operand has 67 states, 67 states have (on average 4.492537313432836) internal successors, (301), 67 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) [2022-02-10 23:09:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:09,010 INFO L93 Difference]: Finished difference Result 29029 states and 84475 transitions. [2022-02-10 23:09:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 23:09:09,011 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.492537313432836) internal successors, (301), 67 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 137 [2022-02-10 23:09:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:09,074 INFO L225 Difference]: With dead ends: 29029 [2022-02-10 23:09:09,074 INFO L226 Difference]: Without dead ends: 28880 [2022-02-10 23:09:09,074 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3835 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1318, Invalid=12251, Unknown=3, NotChecked=0, Total=13572 [2022-02-10 23:09:09,075 INFO L934 BasicCegarLoop]: 162 mSDtfsCounter, 1796 mSDsluCounter, 5533 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 5299 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 622 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:09,075 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 5299 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1959 Invalid, 0 Unknown, 622 Unchecked, 0.6s Time] [2022-02-10 23:09:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28880 states. [2022-02-10 23:09:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28880 to 18540. [2022-02-10 23:09:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18540 states, 18539 states have (on average 2.9468148228059765) internal successors, (54631), 18539 states have internal predecessors, (54631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18540 states to 18540 states and 54631 transitions. [2022-02-10 23:09:09,464 INFO L78 Accepts]: Start accepts. Automaton has 18540 states and 54631 transitions. Word has length 137 [2022-02-10 23:09:09,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:09,464 INFO L470 AbstractCegarLoop]: Abstraction has 18540 states and 54631 transitions. [2022-02-10 23:09:09,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.492537313432836) internal successors, (301), 67 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) [2022-02-10 23:09:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 18540 states and 54631 transitions. [2022-02-10 23:09:09,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-10 23:09:09,488 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:09,488 INFO L515 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] [2022-02-10 23:09:09,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:09,704 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 [2022-02-10 23:09:09,705 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 37401216, now seen corresponding path program 37 times [2022-02-10 23:09:09,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:09,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847728230] [2022-02-10 23:09:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:11,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:11,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847728230] [2022-02-10 23:09:11,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847728230] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:11,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977975043] [2022-02-10 23:09:11,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:09:11,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:11,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:11,115 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:11,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 23:09:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:11,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 71 conjunts are in the unsatisfiable core [2022-02-10 23:09:11,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:11,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:09:11,557 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:09:11,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:09:12,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:09:12,562 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 [2022-02-10 23:09:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:12,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:13,376 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:09:13,376 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 [2022-02-10 23:09:13,379 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 [2022-02-10 23:09:15,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:09:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:15,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977975043] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:15,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:15,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 97 [2022-02-10 23:09:15,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055498167] [2022-02-10 23:09:15,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:15,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-10 23:09:15,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-10 23:09:15,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=8691, Unknown=3, NotChecked=0, Total=9312 [2022-02-10 23:09:15,116 INFO L87 Difference]: Start difference. First operand 18540 states and 54631 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) [2022-02-10 23:09:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:20,838 INFO L93 Difference]: Finished difference Result 25618 states and 74244 transitions. [2022-02-10 23:09:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 23:09:20,838 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 [2022-02-10 23:09:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:20,890 INFO L225 Difference]: With dead ends: 25618 [2022-02-10 23:09:20,890 INFO L226 Difference]: Without dead ends: 25501 [2022-02-10 23:09:20,892 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 213 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2878, Invalid=25849, Unknown=3, NotChecked=0, Total=28730 [2022-02-10 23:09:20,893 INFO L934 BasicCegarLoop]: 156 mSDtfsCounter, 2256 mSDsluCounter, 5703 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 427 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:20,893 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 5375 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3018 Invalid, 0 Unknown, 427 Unchecked, 1.2s Time] [2022-02-10 23:09:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25501 states. [2022-02-10 23:09:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25501 to 18664. [2022-02-10 23:09:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18664 states, 18663 states have (on average 2.9422386540213257) internal successors, (54911), 18663 states have internal predecessors, (54911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18664 states to 18664 states and 54911 transitions. [2022-02-10 23:09:21,283 INFO L78 Accepts]: Start accepts. Automaton has 18664 states and 54911 transitions. Word has length 137 [2022-02-10 23:09:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:21,284 INFO L470 AbstractCegarLoop]: Abstraction has 18664 states and 54911 transitions. [2022-02-10 23:09:21,284 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) [2022-02-10 23:09:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 18664 states and 54911 transitions. [2022-02-10 23:09:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-10 23:09:21,387 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:21,387 INFO L515 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] [2022-02-10 23:09:21,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:21,611 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 [2022-02-10 23:09:21,611 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:21,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash -196912992, now seen corresponding path program 38 times [2022-02-10 23:09:21,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:21,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079148843] [2022-02-10 23:09:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:22,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:22,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079148843] [2022-02-10 23:09:22,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079148843] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:22,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105620679] [2022-02-10 23:09:22,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:09:22,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:22,875 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:22,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 23:09:23,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:09:23,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:23,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 23:09:23,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:24,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:09:24,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:09:24,394 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-10 23:09:24,394 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 [2022-02-10 23:09:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:24,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:25,214 WARN L838 $PredicateComparison]: unable to prove that (or (< c_~q_back~0 0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (and (forall ((v_ArrVal_1398 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1398) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)) (forall ((v_ArrVal_1398 (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_1398) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) (<= c_~n~0 c_~q_back~0)) is different from false [2022-02-10 23:09:25,255 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:09:25,255 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 [2022-02-10 23:09:25,258 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 [2022-02-10 23:09:25,265 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 [2022-02-10 23:09:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:27,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105620679] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:27,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:27,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35, 35] total 92 [2022-02-10 23:09:27,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108613904] [2022-02-10 23:09:27,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:27,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-10 23:09:27,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-10 23:09:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=7677, Unknown=1, NotChecked=178, Total=8372 [2022-02-10 23:09:27,006 INFO L87 Difference]: Start difference. First operand 18664 states and 54911 transitions. Second operand has 92 states, 92 states have (on average 3.5760869565217392) internal successors, (329), 92 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:31,538 INFO L93 Difference]: Finished difference Result 28953 states and 84159 transitions. [2022-02-10 23:09:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 23:09:31,538 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.5760869565217392) internal successors, (329), 92 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have 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 [2022-02-10 23:09:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:31,737 INFO L225 Difference]: With dead ends: 28953 [2022-02-10 23:09:31,738 INFO L226 Difference]: Without dead ends: 28693 [2022-02-10 23:09:31,739 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 218 SyntacticMatches, 8 SemanticMatches, 156 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7617 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2052, Invalid=22441, Unknown=3, NotChecked=310, Total=24806 [2022-02-10 23:09:31,739 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 1786 mSDsluCounter, 7135 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 6842 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1146 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:31,739 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 6842 Invalid, 3877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2652 Invalid, 0 Unknown, 1146 Unchecked, 0.8s Time] [2022-02-10 23:09:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28693 states. [2022-02-10 23:09:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28693 to 18652. [2022-02-10 23:09:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18652 states, 18651 states have (on average 2.9420406412524795) internal successors, (54872), 18651 states have internal predecessors, (54872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18652 states to 18652 states and 54872 transitions. [2022-02-10 23:09:32,074 INFO L78 Accepts]: Start accepts. Automaton has 18652 states and 54872 transitions. Word has length 137 [2022-02-10 23:09:32,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:32,074 INFO L470 AbstractCegarLoop]: Abstraction has 18652 states and 54872 transitions. [2022-02-10 23:09:32,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.5760869565217392) internal successors, (329), 92 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 18652 states and 54872 transitions. [2022-02-10 23:09:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-10 23:09:32,097 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:32,097 INFO L515 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] [2022-02-10 23:09:32,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:32,311 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 [2022-02-10 23:09:32,312 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1236937888, now seen corresponding path program 39 times [2022-02-10 23:09:32,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:32,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132627059] [2022-02-10 23:09:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:33,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:33,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132627059] [2022-02-10 23:09:33,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132627059] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:33,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554616174] [2022-02-10 23:09:33,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:09:33,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:33,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:33,361 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:33,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 23:09:33,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:09:33,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:33,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-10 23:09:33,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:09:34,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:09:34,271 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:09:34,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:09:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:09:34,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:34,865 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:09:34,865 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 [2022-02-10 23:09:34,869 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 [2022-02-10 23:09:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:09:35,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554616174] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:35,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:35,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 23, 23] total 69 [2022-02-10 23:09:35,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287553771] [2022-02-10 23:09:35,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:35,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-10 23:09:35,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-10 23:09:35,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=4407, Unknown=3, NotChecked=0, Total=4692 [2022-02-10 23:09:35,684 INFO L87 Difference]: Start difference. First operand 18652 states and 54872 transitions. Second operand has 69 states, 69 states have (on average 4.36231884057971) internal successors, (301), 69 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) [2022-02-10 23:09:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:38,741 INFO L93 Difference]: Finished difference Result 27183 states and 78848 transitions. [2022-02-10 23:09:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 23:09:38,742 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.36231884057971) internal successors, (301), 69 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 137 [2022-02-10 23:09:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:38,796 INFO L225 Difference]: With dead ends: 27183 [2022-02-10 23:09:38,796 INFO L226 Difference]: Without dead ends: 27128 [2022-02-10 23:09:38,798 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 244 SyntacticMatches, 6 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1391, Invalid=13858, Unknown=3, NotChecked=0, Total=15252 [2022-02-10 23:09:38,798 INFO L934 BasicCegarLoop]: 166 mSDtfsCounter, 1781 mSDsluCounter, 5944 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:38,798 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 5660 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2659 Invalid, 0 Unknown, 269 Unchecked, 0.8s Time] [2022-02-10 23:09:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27128 states. [2022-02-10 23:09:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27128 to 18604. [2022-02-10 23:09:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18604 states, 18603 states have (on average 2.9433424716443586) internal successors, (54755), 18603 states have internal predecessors, (54755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18604 states to 18604 states and 54755 transitions. [2022-02-10 23:09:39,293 INFO L78 Accepts]: Start accepts. Automaton has 18604 states and 54755 transitions. Word has length 137 [2022-02-10 23:09:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:39,293 INFO L470 AbstractCegarLoop]: Abstraction has 18604 states and 54755 transitions. [2022-02-10 23:09:39,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.36231884057971) internal successors, (301), 69 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) [2022-02-10 23:09:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 18604 states and 54755 transitions. [2022-02-10 23:09:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:09:39,315 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:39,315 INFO L515 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] [2022-02-10 23:09:39,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:39,528 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 [2022-02-10 23:09:39,529 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1523455396, now seen corresponding path program 40 times [2022-02-10 23:09:39,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:39,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184655451] [2022-02-10 23:09:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:41,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:41,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184655451] [2022-02-10 23:09:41,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184655451] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:41,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927254034] [2022-02-10 23:09:41,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:09:41,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:41,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:41,474 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:41,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 23:09:41,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:09:41,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:41,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 84 conjunts are in the unsatisfiable core [2022-02-10 23:09:41,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:41,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:09:41,948 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:09:41,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:09:43,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-02-10 23:09:43,836 INFO L353 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-02-10 23:09:43,836 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 [2022-02-10 23:09:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:44,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:45,510 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-10 23:09:45,511 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 [2022-02-10 23:09:45,516 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 23:09:45,517 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 [2022-02-10 23:09:48,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:09:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:48,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927254034] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:48,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:48,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 39, 39] total 109 [2022-02-10 23:09:48,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318656164] [2022-02-10 23:09:48,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:48,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-02-10 23:09:48,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-02-10 23:09:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=10843, Unknown=24, NotChecked=0, Total=11772 [2022-02-10 23:09:48,393 INFO L87 Difference]: Start difference. First operand 18604 states and 54755 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) [2022-02-10 23:10:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:28,379 INFO L93 Difference]: Finished difference Result 35165 states and 103438 transitions. [2022-02-10 23:10:28,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-02-10 23:10:28,380 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 [2022-02-10 23:10:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:28,459 INFO L225 Difference]: With dead ends: 35165 [2022-02-10 23:10:28,460 INFO L226 Difference]: Without dead ends: 34916 [2022-02-10 23:10:28,463 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 228 SyntacticMatches, 55 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37407 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=9306, Invalid=88690, Unknown=286, NotChecked=0, Total=98282 [2022-02-10 23:10:28,464 INFO L934 BasicCegarLoop]: 341 mSDtfsCounter, 4507 mSDsluCounter, 16012 mSDsCounter, 0 mSdLazyCounter, 5778 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 15555 SdHoareTripleChecker+Invalid, 18136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 5778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11675 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:28,464 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4507 Valid, 15555 Invalid, 18136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 5778 Invalid, 0 Unknown, 11675 Unchecked, 2.7s Time] [2022-02-10 23:10:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34916 states. [2022-02-10 23:10:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34916 to 20026. [2022-02-10 23:10:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20026 states, 20025 states have (on average 2.9316354556803996) internal successors, (58706), 20025 states have internal predecessors, (58706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20026 states to 20026 states and 58706 transitions. [2022-02-10 23:10:28,872 INFO L78 Accepts]: Start accepts. Automaton has 20026 states and 58706 transitions. Word has length 139 [2022-02-10 23:10:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:28,872 INFO L470 AbstractCegarLoop]: Abstraction has 20026 states and 58706 transitions. [2022-02-10 23:10:28,872 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) [2022-02-10 23:10:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 20026 states and 58706 transitions. [2022-02-10 23:10:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:28,897 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:28,897 INFO L515 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] [2022-02-10 23:10:28,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 23:10:29,111 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 [2022-02-10 23:10:29,112 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash -286390406, now seen corresponding path program 41 times [2022-02-10 23:10:29,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:29,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040724646] [2022-02-10 23:10:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:30,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:30,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040724646] [2022-02-10 23:10:30,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040724646] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:30,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742027530] [2022-02-10 23:10:30,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:10:30,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:30,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:30,746 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:10:30,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 23:10:30,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:10:30,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:30,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-10 23:10:30,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:30,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:10:31,093 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:10:31,093 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:10:32,046 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 [2022-02-10 23:10:32,306 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 23:10:32,306 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 [2022-02-10 23:10:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:10:32,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:32,843 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1503 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1503) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset)) (select .cse0 (+ .cse1 c_~q~0.offset 4)))))) (forall ((v_ArrVal_1503 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1503) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset)) (select .cse2 (+ .cse3 c_~q~0.offset 4)))) c_~N~0))) is different from false [2022-02-10 23:10:33,385 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-10 23:10:33,385 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 [2022-02-10 23:10:33,390 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 23:10:33,390 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 [2022-02-10 23:10:33,395 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 23:10:33,395 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 [2022-02-10 23:10:34,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-10 23:10:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:10:34,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742027530] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:34,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:34,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 27, 27] total 80 [2022-02-10 23:10:34,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784914092] [2022-02-10 23:10:34,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:34,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-10 23:10:34,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-10 23:10:34,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=5882, Unknown=4, NotChecked=154, Total=6320 [2022-02-10 23:10:34,297 INFO L87 Difference]: Start difference. First operand 20026 states and 58706 transitions. Second operand has 80 states, 80 states have (on average 3.875) internal successors, (310), 80 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:41,814 INFO L93 Difference]: Finished difference Result 29886 states and 86007 transitions. [2022-02-10 23:10:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-10 23:10:41,815 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.875) internal successors, (310), 80 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have 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 [2022-02-10 23:10:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:41,954 INFO L225 Difference]: With dead ends: 29886 [2022-02-10 23:10:41,954 INFO L226 Difference]: Without dead ends: 29239 [2022-02-10 23:10:41,955 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 252 SyntacticMatches, 7 SemanticMatches, 161 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 7192 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1626, Invalid=24456, Unknown=4, NotChecked=320, Total=26406 [2022-02-10 23:10:41,955 INFO L934 BasicCegarLoop]: 234 mSDtfsCounter, 2534 mSDsluCounter, 10992 mSDsCounter, 0 mSdLazyCounter, 6468 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 10088 SdHoareTripleChecker+Invalid, 8852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 6468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2137 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:41,956 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2534 Valid, 10088 Invalid, 8852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 6468 Invalid, 0 Unknown, 2137 Unchecked, 2.6s Time] [2022-02-10 23:10:41,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29239 states. [2022-02-10 23:10:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29239 to 20948. [2022-02-10 23:10:42,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20948 states, 20947 states have (on average 2.9262901608822265) internal successors, (61297), 20947 states have internal predecessors, (61297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20948 states to 20948 states and 61297 transitions. [2022-02-10 23:10:42,330 INFO L78 Accepts]: Start accepts. Automaton has 20948 states and 61297 transitions. Word has length 139 [2022-02-10 23:10:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:42,330 INFO L470 AbstractCegarLoop]: Abstraction has 20948 states and 61297 transitions. [2022-02-10 23:10:42,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.875) internal successors, (310), 80 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20948 states and 61297 transitions. [2022-02-10 23:10:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:42,358 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:42,358 INFO L515 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] [2022-02-10 23:10:42,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 23:10:42,571 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 [2022-02-10 23:10:42,572 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -447564780, now seen corresponding path program 42 times [2022-02-10 23:10:42,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:42,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371498720] [2022-02-10 23:10:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:44,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:44,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371498720] [2022-02-10 23:10:44,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371498720] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:44,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841644054] [2022-02-10 23:10:44,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:10:44,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:44,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:44,247 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:10:44,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 23:10:44,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:10:44,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:44,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 88 conjunts are in the unsatisfiable core [2022-02-10 23:10:44,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:44,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 23:10:44,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 23:10:45,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-10 23:10:45,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-10 23:10:46,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:10:46,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-02-10 23:10:46,652 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-02-10 23:10:46,652 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 [2022-02-10 23:10:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:46,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:05,265 INFO L353 Elim1Store]: treesize reduction 96, result has 39.6 percent of original size [2022-02-10 23:11:05,265 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 301 treesize of output 181 [2022-02-10 23:11:05,368 INFO L353 Elim1Store]: treesize reduction 81, result has 67.1 percent of original size [2022-02-10 23:11:05,368 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 721 treesize of output 769 [2022-02-10 23:11:05,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 23:11:05,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 23:11:05,426 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:11:05,426 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 [2022-02-10 23:11:05,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 23:11:05,442 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 [2022-02-10 23:15:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:15:38,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841644054] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:15:38,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:15:38,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42, 44] total 116 [2022-02-10 23:15:38,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991362054] [2022-02-10 23:15:38,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:15:38,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-02-10 23:15:38,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:15:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-02-10 23:15:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1114, Invalid=12142, Unknown=84, NotChecked=0, Total=13340 [2022-02-10 23:15:38,637 INFO L87 Difference]: Start difference. First operand 20948 states and 61297 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) [2022-02-10 23:16:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:16:06,187 INFO L93 Difference]: Finished difference Result 30732 states and 89137 transitions. [2022-02-10 23:16:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-10 23:16:06,187 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 [2022-02-10 23:16:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:16:06,253 INFO L225 Difference]: With dead ends: 30732 [2022-02-10 23:16:06,253 INFO L226 Difference]: Without dead ends: 30673 [2022-02-10 23:16:06,256 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 228 SyntacticMatches, 22 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16807 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=3995, Invalid=45735, Unknown=222, NotChecked=0, Total=49952 [2022-02-10 23:16:06,256 INFO L934 BasicCegarLoop]: 292 mSDtfsCounter, 3944 mSDsluCounter, 14446 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3944 SdHoareTripleChecker+Valid, 13869 SdHoareTripleChecker+Invalid, 8404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5562 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:16:06,257 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3944 Valid, 13869 Invalid, 8404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2694 Invalid, 0 Unknown, 5562 Unchecked, 1.2s Time] [2022-02-10 23:16:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30673 states. [2022-02-10 23:16:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30673 to 21559. [2022-02-10 23:16:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21559 states, 21558 states have (on average 2.9177103627423695) internal successors, (62900), 21558 states have internal predecessors, (62900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:16:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21559 states to 21559 states and 62900 transitions. [2022-02-10 23:16:06,719 INFO L78 Accepts]: Start accepts. Automaton has 21559 states and 62900 transitions. Word has length 139 [2022-02-10 23:16:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:16:06,720 INFO L470 AbstractCegarLoop]: Abstraction has 21559 states and 62900 transitions. [2022-02-10 23:16:06,720 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) [2022-02-10 23:16:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 21559 states and 62900 transitions. [2022-02-10 23:16:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:16:06,747 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:16:06,747 INFO L515 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] [2022-02-10 23:16:06,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-10 23:16:06,955 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 [2022-02-10 23:16:06,955 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:16:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:16:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1566198338, now seen corresponding path program 43 times [2022-02-10 23:16:06,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:16:06,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495568850] [2022-02-10 23:16:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:16:06,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:16:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:16:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:16:09,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:16:09,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495568850] [2022-02-10 23:16:09,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495568850] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:16:09,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045866300] [2022-02-10 23:16:09,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:16:09,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:16:09,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:16:09,173 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:16:09,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 23:16:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:16:09,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 71 conjunts are in the unsatisfiable core [2022-02-10 23:16:09,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:16:11,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:16:11,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-02-10 23:16:11,634 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-02-10 23:16:11,634 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 [2022-02-10 23:16:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:16:11,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:16:13,210 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-10 23:16:13,211 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 [2022-02-10 23:16:13,217 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-10 23:16:13,217 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 94 treesize of output 61 [2022-02-10 23:16:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:16:16,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045866300] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:16:16,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:16:16,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 39, 39] total 112 [2022-02-10 23:16:16,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118435723] [2022-02-10 23:16:16,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:16:16,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-02-10 23:16:16,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:16:16,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-02-10 23:16:16,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=826, Invalid=11597, Unknown=9, NotChecked=0, Total=12432 [2022-02-10 23:16:16,655 INFO L87 Difference]: Start difference. First operand 21559 states and 62900 transitions. Second operand has 112 states, 112 states have (on average 3.25) internal successors, (364), 112 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... [2022-02-10 23:16:46,425 WARN L244 SmtUtils]: Removed 12 from assertion stack [2022-02-10 23:16:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-10 23:16:46,429 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 [2022-02-10 23:16:46,429 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 23:16:46,429 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 231 SyntacticMatches, 13 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30022 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=8414, Invalid=80636, Unknown=52, NotChecked=0, Total=89102 [2022-02-10 23:16:46,430 INFO L934 BasicCegarLoop]: 296 mSDtfsCounter, 4686 mSDsluCounter, 14256 mSDsCounter, 0 mSdLazyCounter, 6401 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 13947 SdHoareTripleChecker+Invalid, 10488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 6401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3336 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:16:46,430 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 13947 Invalid, 10488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 6401 Invalid, 0 Unknown, 3336 Unchecked, 3.2s Time] [2022-02-10 23:16:46,434 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 23:16:46,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 23:16:46,643 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 [2022-02-10 23:16:46,643 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (21559states) and FLOYD_HOARE automaton (currently 203 states, 112 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 88 for 19ms.. [2022-02-10 23:16:46,645 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 23:16:46,645 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 23:16:46,647 INFO L733 BasicCegarLoop]: Path program histogram: [43, 3, 2, 1, 1, 1] [2022-02-10 23:16:46,648 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:16:46,648 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:16:46,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:16:46 BasicIcfg [2022-02-10 23:16:46,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:16:46,651 INFO L158 Benchmark]: Toolchain (without parser) took 844833.85ms. Allocated memory was 192.9MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 139.3MB in the beginning and 285.6MB in the end (delta: -146.3MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-02-10 23:16:46,651 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:16:46,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.11ms. Allocated memory is still 192.9MB. Free memory was 139.2MB in the beginning and 166.4MB in the end (delta: -27.2MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2022-02-10 23:16:46,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.17ms. Allocated memory is still 192.9MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 23:16:46,651 INFO L158 Benchmark]: Boogie Preprocessor took 28.00ms. Allocated memory is still 192.9MB. Free memory was 164.3MB in the beginning and 163.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:16:46,651 INFO L158 Benchmark]: RCFGBuilder took 474.12ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 142.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-02-10 23:16:46,651 INFO L158 Benchmark]: TraceAbstraction took 844061.66ms. Allocated memory was 192.9MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 141.7MB in the beginning and 285.6MB in the end (delta: -143.9MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-02-10 23:16:46,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.11ms. Allocated memory is still 192.9MB. Free memory was 139.2MB in the beginning and 166.4MB in the end (delta: -27.2MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.17ms. Allocated memory is still 192.9MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.00ms. Allocated memory is still 192.9MB. Free memory was 164.3MB in the beginning and 163.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 474.12ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 142.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 844061.66ms. Allocated memory was 192.9MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 141.7MB in the beginning and 285.6MB in the end (delta: -143.9MB). Peak memory consumption was 1.4GB. 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 (21559states) and FLOYD_HOARE automaton (currently 203 states, 112 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 88 for 19ms.. - 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 (21559states) and FLOYD_HOARE automaton (currently 203 states, 112 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 88 for 19ms.. - 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 (21559states) and FLOYD_HOARE automaton (currently 203 states, 112 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 88 for 19ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 146 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 844.0s, OverallIterations: 51, TraceHistogramMax: 4, PathProgramHistogramMax: 43, EmptinessCheckTime: 0.5s, AutomataDifference: 328.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106904 SdHoareTripleChecker+Valid, 53.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106904 mSDsluCounter, 306440 SdHoareTripleChecker+Invalid, 45.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 57978 IncrementalHoareTripleChecker+Unchecked, 321387 mSDsCounter, 8769 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136326 IncrementalHoareTripleChecker+Invalid, 203073 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8769 mSolverCounterUnsat, 9019 mSDtfsCounter, 136326 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17297 GetRequests, 10367 SyntacticMatches, 461 SemanticMatches, 6468 ConstructedPredicates, 15 IntricatePredicates, 4 DeprecatedPredicates, 329430 ImplicationChecksByTransitivity, 359.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21559occurred in iteration=50, InterpolantAutomatonStates: 3558, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 50 MinimizatonAttempts, 169309 StatesRemovedByMinimization, 48 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 491.4s InterpolantComputationTime, 12507 NumberOfCodeBlocks, 12320 NumberOfCodeBlocksAsserted, 150 NumberOfCheckSat, 18300 ConstructedInterpolants, 1787 QuantifiedInterpolants, 368398 SizeOfPredicates, 1376 NumberOfNonLiveVariables, 13771 ConjunctsInSsa, 2378 ConjunctsInUnsatCore, 144 InterpolantComputations, 5 PerfectInterpolantSequences, 990/3795 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