/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-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:06:23,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:06:23,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:06:23,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:06:23,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 23:06:23,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 23:06:23,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 23:06:23,115 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 23:06:23,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:06:23,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:06:23,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:06:23,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:06:23,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:06:23,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:06:23,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:06:23,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:06:23,134 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:06:23,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:06:23,134 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:06:23,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:06:23,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:06:23,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:06:23,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:06:23,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:06:23,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:06:23,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:06:23,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:06:23,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:06:23,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:06:23,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:06:23,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:06:23,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:06:23,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:06:23,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:06:23,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:06:23,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:06:23,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 23:06:23,323 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 23:06:23,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-02-10 23:06:23,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b91e1d79/df2b99255cd84bfab79bc4d596b5d502/FLAG8f97b4292 [2022-02-10 23:06:23,736 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 23:06:23,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-02-10 23:06:23,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b91e1d79/df2b99255cd84bfab79bc4d596b5d502/FLAG8f97b4292 [2022-02-10 23:06:23,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b91e1d79/df2b99255cd84bfab79bc4d596b5d502 [2022-02-10 23:06:23,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:06:23,762 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 23:06:23,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 23:06:23,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 23:06:23,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 23:06:23,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:23,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae08ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23, skipping insertion in model container [2022-02-10 23:06:23,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:23,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 23:06:23,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 23:06:23,948 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-simple-queue.wvr.c[2438,2451] [2022-02-10 23:06:23,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:06:23,962 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 23:06:23,980 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-simple-queue.wvr.c[2438,2451] [2022-02-10 23:06:23,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:06:23,990 INFO L208 MainTranslator]: Completed translation [2022-02-10 23:06:23,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23 WrapperNode [2022-02-10 23:06:23,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 23:06:23,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:06:23,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:06:23,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:06:23,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,031 INFO L137 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 128 [2022-02-10 23:06:24,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:06:24,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:06:24,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:06:24,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:06:24,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:06:24,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:06:24,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:06:24,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:06:24,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (1/1) ... [2022-02-10 23:06:24,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:06:24,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:24,082 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 23:06:24,088 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 23:06:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 23:06:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 23:06:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 23:06:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 23:06:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 23:06:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:06:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 23:06:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 23:06:24,115 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 23:06:24,191 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:06:24,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:06:24,380 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:06:24,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:06:24,429 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-10 23:06:24,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:06:24 BoogieIcfgContainer [2022-02-10 23:06:24,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:06:24,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:06:24,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:06:24,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:06:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 11:06:23" (1/3) ... [2022-02-10 23:06:24,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298dc789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:06:24, skipping insertion in model container [2022-02-10 23:06:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:06:23" (2/3) ... [2022-02-10 23:06:24,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298dc789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:06:24, skipping insertion in model container [2022-02-10 23:06:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:06:24" (3/3) ... [2022-02-10 23:06:24,436 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-02-10 23:06:24,439 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:06:24,439 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:06:24,439 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:06:24,439 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:06:24,462 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,462 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,462 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,462 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,463 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,464 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,464 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,464 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,464 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,464 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,464 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,464 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,465 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,465 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,465 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,465 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,465 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,465 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,466 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,467 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,467 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,467 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,467 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,469 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,469 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,469 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,469 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,470 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,470 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,470 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,470 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,470 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,470 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,471 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,471 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,471 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,471 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:06:24,480 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 23:06:24,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:06:24,529 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 23:06:24,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:06:24,540 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 118 places, 120 transitions, 256 flow [2022-02-10 23:06:24,587 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 23:06:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 23:06:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 23:06:24,608 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:24,608 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] [2022-02-10 23:06:24,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash -571534812, now seen corresponding path program 1 times [2022-02-10 23:06:24,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:24,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575414055] [2022-02-10 23:06:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:24,828 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 23:06:24,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:24,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575414055] [2022-02-10 23:06:24,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575414055] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:06:24,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:06:24,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 23:06:24,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752858947] [2022-02-10 23:06:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:06:24,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 23:06:24,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 23:06:24,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 23:06:24,857 INFO L87 Difference]: Start difference. First operand has 335 states, 334 states have (on average 2.42814371257485) internal successors, (811), 334 states have internal predecessors, (811), 0 states have call successors, (0), 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 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:24,888 INFO L93 Difference]: Finished difference Result 335 states and 742 transitions. [2022-02-10 23:06:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 23:06:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-02-10 23:06:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:24,898 INFO L225 Difference]: With dead ends: 335 [2022-02-10 23:06:24,898 INFO L226 Difference]: Without dead ends: 332 [2022-02-10 23:06:24,899 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 23:06:24,901 INFO L934 BasicCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:24,902 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:06:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-02-10 23:06:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-02-10 23:06:24,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.2326283987915407) internal successors, (739), 331 states have internal predecessors, (739), 0 states have call successors, (0), 0 states 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 23:06:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 739 transitions. [2022-02-10 23:06:24,941 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 739 transitions. Word has length 85 [2022-02-10 23:06:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:24,941 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 739 transitions. [2022-02-10 23:06:24,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 739 transitions. [2022-02-10 23:06:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-10 23:06:24,944 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:24,944 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] [2022-02-10 23:06:24,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:06:24,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash -839991221, now seen corresponding path program 1 times [2022-02-10 23:06:24,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:24,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825583734] [2022-02-10 23:06:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:24,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:25,128 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 23:06:25,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:25,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825583734] [2022-02-10 23:06:25,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825583734] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:06:25,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:06:25,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:06:25,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397572054] [2022-02-10 23:06:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:06:25,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:06:25,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:06:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:06:25,131 INFO L87 Difference]: Start difference. First operand 332 states and 739 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:25,198 INFO L93 Difference]: Finished difference Result 555 states and 1326 transitions. [2022-02-10 23:06:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 23:06:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-02-10 23:06:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:25,204 INFO L225 Difference]: With dead ends: 555 [2022-02-10 23:06:25,204 INFO L226 Difference]: Without dead ends: 425 [2022-02-10 23:06:25,204 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:06:25,207 INFO L934 BasicCegarLoop]: 92 mSDtfsCounter, 16 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:25,207 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 306 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:06:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-02-10 23:06:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 363. [2022-02-10 23:06:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.270718232044199) internal successors, (822), 362 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 23:06:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 822 transitions. [2022-02-10 23:06:25,232 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 822 transitions. Word has length 87 [2022-02-10 23:06:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:25,232 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 822 transitions. [2022-02-10 23:06:25,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 822 transitions. [2022-02-10 23:06:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-10 23:06:25,235 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:25,235 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] [2022-02-10 23:06:25,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:06:25,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1523956765, now seen corresponding path program 1 times [2022-02-10 23:06:25,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:25,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724385825] [2022-02-10 23:06:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:25,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:25,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:25,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724385825] [2022-02-10 23:06:25,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724385825] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:06:25,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:06:25,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:06:25,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299214115] [2022-02-10 23:06:25,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:06:25,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:06:25,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:06:25,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:06:25,311 INFO L87 Difference]: Start difference. First operand 363 states and 822 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:25,329 INFO L93 Difference]: Finished difference Result 498 states and 1124 transitions. [2022-02-10 23:06:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:06:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-02-10 23:06:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:25,331 INFO L225 Difference]: With dead ends: 498 [2022-02-10 23:06:25,331 INFO L226 Difference]: Without dead ends: 417 [2022-02-10 23:06:25,332 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 23:06:25,333 INFO L934 BasicCegarLoop]: 94 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:25,333 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 147 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:06:25,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-10 23:06:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-02-10 23:06:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 2.2716346153846154) internal successors, (945), 416 states have internal predecessors, (945), 0 states have call successors, (0), 0 states 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 23:06:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 945 transitions. [2022-02-10 23:06:25,343 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 945 transitions. Word has length 90 [2022-02-10 23:06:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:25,344 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 945 transitions. [2022-02-10 23:06:25,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 945 transitions. [2022-02-10 23:06:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 23:06:25,346 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:25,346 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] [2022-02-10 23:06:25,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:06:25,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash 764156185, now seen corresponding path program 1 times [2022-02-10 23:06:25,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:25,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523302172] [2022-02-10 23:06:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:25,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:06:25,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:25,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523302172] [2022-02-10 23:06:25,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523302172] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:06:25,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:06:25,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:06:25,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371874659] [2022-02-10 23:06:25,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:06:25,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:06:25,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:25,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:06:25,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:06:25,452 INFO L87 Difference]: Start difference. First operand 417 states and 945 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:25,533 INFO L93 Difference]: Finished difference Result 486 states and 1066 transitions. [2022-02-10 23:06:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:06:25,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-10 23:06:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:25,538 INFO L225 Difference]: With dead ends: 486 [2022-02-10 23:06:25,538 INFO L226 Difference]: Without dead ends: 423 [2022-02-10 23:06:25,539 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 23:06:25,539 INFO L934 BasicCegarLoop]: 86 mSDtfsCounter, 226 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:25,540 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 267 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:06:25,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-02-10 23:06:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2022-02-10 23:06:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.2685851318944845) internal successors, (946), 417 states have internal predecessors, (946), 0 states have call successors, (0), 0 states 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 23:06:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 946 transitions. [2022-02-10 23:06:25,549 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 946 transitions. Word has length 93 [2022-02-10 23:06:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:25,549 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 946 transitions. [2022-02-10 23:06:25,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 946 transitions. [2022-02-10 23:06:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 23:06:25,551 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:25,551 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 23:06:25,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 23:06:25,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1391817806, now seen corresponding path program 1 times [2022-02-10 23:06:25,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:25,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177073012] [2022-02-10 23:06:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:26,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:26,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177073012] [2022-02-10 23:06:26,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177073012] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:26,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614308785] [2022-02-10 23:06:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:26,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:26,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:26,310 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 23:06:26,313 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 23:06:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:26,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-10 23:06:26,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:26,926 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 23:06:27,227 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 23:06:27,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:06:27,402 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 23:06:27,505 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 23:06:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:27,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:27,609 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_68 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_68) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-02-10 23:06:28,345 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:28,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-02-10 23:06:28,352 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:28,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 178 treesize of output 170 [2022-02-10 23:06:28,360 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:28,360 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 154 treesize of output 152 [2022-02-10 23:06:28,364 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 118 treesize of output 94 [2022-02-10 23:06:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-02-10 23:06:29,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614308785] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:29,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:29,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 55 [2022-02-10 23:06:29,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906433136] [2022-02-10 23:06:29,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:29,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 23:06:29,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:29,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 23:06:29,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2642, Unknown=9, NotChecked=104, Total=2970 [2022-02-10 23:06:29,042 INFO L87 Difference]: Start difference. First operand 418 states and 946 transitions. Second operand has 55 states, 55 states have (on average 4.345454545454546) internal successors, (239), 55 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 23:06:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:32,779 INFO L93 Difference]: Finished difference Result 2793 states and 7009 transitions. [2022-02-10 23:06:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 23:06:32,779 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.345454545454546) internal successors, (239), 55 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have 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 23:06:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:32,791 INFO L225 Difference]: With dead ends: 2793 [2022-02-10 23:06:32,791 INFO L226 Difference]: Without dead ends: 2757 [2022-02-10 23:06:32,792 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 168 SyntacticMatches, 5 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1309, Invalid=6872, Unknown=13, NotChecked=178, Total=8372 [2022-02-10 23:06:32,793 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 2477 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:32,793 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2477 Valid, 3391 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 923 Invalid, 0 Unknown, 594 Unchecked, 0.5s Time] [2022-02-10 23:06:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-02-10 23:06:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 781. [2022-02-10 23:06:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 2.5294871794871794) internal successors, (1973), 780 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states 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 23:06:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1973 transitions. [2022-02-10 23:06:32,819 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1973 transitions. Word has length 100 [2022-02-10 23:06:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:32,820 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 1973 transitions. [2022-02-10 23:06:32,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.345454545454546) internal successors, (239), 55 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 23:06:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1973 transitions. [2022-02-10 23:06:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 23:06:32,822 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:32,822 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 23:06:32,838 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 23:06:33,036 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 23:06:33,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:33,037 INFO L85 PathProgramCache]: Analyzing trace with hash -161344104, now seen corresponding path program 2 times [2022-02-10 23:06:33,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:33,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001957066] [2022-02-10 23:06:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:33,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:33,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001957066] [2022-02-10 23:06:33,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001957066] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:33,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124972738] [2022-02-10 23:06:33,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:06:33,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:33,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:33,466 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 23:06:33,467 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 23:06:33,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:06:33,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:33,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-10 23:06:33,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:33,576 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 23:06:33,851 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:06:33,852 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 23:06:33,978 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 23:06:34,253 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 23:06:34,404 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 23:06:34,485 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 23:06:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:34,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:34,569 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_97 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_97) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-02-10 23:06:35,176 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:35,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-02-10 23:06:35,185 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:35,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 100 treesize of output 100 [2022-02-10 23:06:35,190 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 60 treesize of output 48 [2022-02-10 23:06:35,198 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:35,198 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 51 treesize of output 55 [2022-02-10 23:06:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-02-10 23:06:36,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124972738] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:36,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:36,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 54 [2022-02-10 23:06:36,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324199969] [2022-02-10 23:06:36,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:36,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 23:06:36,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:36,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 23:06:36,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2523, Unknown=8, NotChecked=102, Total=2862 [2022-02-10 23:06:36,149 INFO L87 Difference]: Start difference. First operand 781 states and 1973 transitions. Second operand has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 23:06:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:37,857 INFO L93 Difference]: Finished difference Result 1622 states and 4236 transitions. [2022-02-10 23:06:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 23:06:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have 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 23:06:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:37,863 INFO L225 Difference]: With dead ends: 1622 [2022-02-10 23:06:37,863 INFO L226 Difference]: Without dead ends: 1492 [2022-02-10 23:06:37,864 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=884, Invalid=4962, Unknown=10, NotChecked=150, Total=6006 [2022-02-10 23:06:37,864 INFO L934 BasicCegarLoop]: 90 mSDtfsCounter, 1060 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 759 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:37,865 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 1902 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 506 Invalid, 0 Unknown, 759 Unchecked, 0.2s Time] [2022-02-10 23:06:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-02-10 23:06:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 996. [2022-02-10 23:06:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 2.577889447236181) internal successors, (2565), 995 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 23:06:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2565 transitions. [2022-02-10 23:06:37,884 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2565 transitions. Word has length 100 [2022-02-10 23:06:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:37,884 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 2565 transitions. [2022-02-10 23:06:37,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 23:06:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2565 transitions. [2022-02-10 23:06:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 23:06:37,887 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:37,887 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] [2022-02-10 23:06:37,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:38,103 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 23:06:38,103 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 205024512, now seen corresponding path program 3 times [2022-02-10 23:06:38,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:38,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538314600] [2022-02-10 23:06:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:38,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:06:38,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:38,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538314600] [2022-02-10 23:06:38,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538314600] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:38,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954214585] [2022-02-10 23:06:38,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:06:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:38,185 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 23:06:38,186 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 23:06:38,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:06:38,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:38,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 23:06:38,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:38,521 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 23:06:38,673 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 23:06:38,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:06:38,834 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 23:06:38,983 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:06:38,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:06:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 23:06:39,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:40,176 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:40,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-02-10 23:06:40,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:40,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 100 [2022-02-10 23:06:40,188 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 60 treesize of output 48 [2022-02-10 23:06:40,195 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:40,195 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 51 treesize of output 55 [2022-02-10 23:06:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 23:06:40,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954214585] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:40,717 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:40,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 21, 21] total 39 [2022-02-10 23:06:40,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868045513] [2022-02-10 23:06:40,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:40,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:06:40,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:40,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:06:40,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1316, Unknown=38, NotChecked=0, Total=1482 [2022-02-10 23:06:40,720 INFO L87 Difference]: Start difference. First operand 996 states and 2565 transitions. Second operand has 39 states, 39 states have (on average 6.538461538461538) internal successors, (255), 39 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 23:06:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:41,519 INFO L93 Difference]: Finished difference Result 3138 states and 8154 transitions. [2022-02-10 23:06:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 23:06:41,519 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.538461538461538) internal successors, (255), 39 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-02-10 23:06:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:41,530 INFO L225 Difference]: With dead ends: 3138 [2022-02-10 23:06:41,530 INFO L226 Difference]: Without dead ends: 3086 [2022-02-10 23:06:41,531 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=582, Invalid=3285, Unknown=39, NotChecked=0, Total=3906 [2022-02-10 23:06:41,532 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 1036 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:41,532 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 2277 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 293 Invalid, 0 Unknown, 387 Unchecked, 0.2s Time] [2022-02-10 23:06:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2022-02-10 23:06:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2049. [2022-02-10 23:06:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 2.67138671875) internal successors, (5471), 2048 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 5471 transitions. [2022-02-10 23:06:41,577 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 5471 transitions. Word has length 103 [2022-02-10 23:06:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:41,577 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 5471 transitions. [2022-02-10 23:06:41,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.538461538461538) internal successors, (255), 39 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 23:06:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 5471 transitions. [2022-02-10 23:06:41,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 23:06:41,581 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:41,581 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] [2022-02-10 23:06:41,599 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 23:06:41,795 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 23:06:41,795 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1265215916, now seen corresponding path program 4 times [2022-02-10 23:06:41,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:41,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412622851] [2022-02-10 23:06:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:41,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:06:41,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:41,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412622851] [2022-02-10 23:06:41,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412622851] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:41,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6312673] [2022-02-10 23:06:41,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:06:41,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:41,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:41,868 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 23:06:41,869 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 23:06:41,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:06:41,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:41,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:06:41,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:42,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:42,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6312673] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:42,732 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:42,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 21 [2022-02-10 23:06:42,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16027253] [2022-02-10 23:06:42,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:42,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 23:06:42,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 23:06:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:06:42,733 INFO L87 Difference]: Start difference. First operand 2049 states and 5471 transitions. Second operand has 21 states, 21 states have (on average 10.80952380952381) internal successors, (227), 21 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:43,062 INFO L93 Difference]: Finished difference Result 2742 states and 6843 transitions. [2022-02-10 23:06:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 23:06:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.80952380952381) internal successors, (227), 21 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-02-10 23:06:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:43,069 INFO L225 Difference]: With dead ends: 2742 [2022-02-10 23:06:43,069 INFO L226 Difference]: Without dead ends: 1693 [2022-02-10 23:06:43,069 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=818, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:06:43,070 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 889 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:43,070 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 1004 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:06:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2022-02-10 23:06:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1024. [2022-02-10 23:06:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1023 states have (on average 2.4271749755620724) internal successors, (2483), 1023 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states 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 23:06:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 2483 transitions. [2022-02-10 23:06:43,090 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 2483 transitions. Word has length 103 [2022-02-10 23:06:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:43,090 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 2483 transitions. [2022-02-10 23:06:43,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.80952380952381) internal successors, (227), 21 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 2483 transitions. [2022-02-10 23:06:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 23:06:43,092 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:43,092 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] [2022-02-10 23:06:43,110 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 23:06:43,308 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 23:06:43,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1557416788, now seen corresponding path program 5 times [2022-02-10 23:06:43,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:43,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771466267] [2022-02-10 23:06:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:06:43,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:43,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771466267] [2022-02-10 23:06:43,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771466267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:43,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412519550] [2022-02-10 23:06:43,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:06:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:43,382 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 23:06:43,383 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 23:06:43,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:06:43,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:43,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 23:06:43,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:06:43,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:06:43,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412519550] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:43,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:43,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 23:06:43,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929477768] [2022-02-10 23:06:43,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:43,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 23:06:43,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 23:06:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-02-10 23:06:43,916 INFO L87 Difference]: Start difference. First operand 1024 states and 2483 transitions. Second operand has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 23:06:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:44,059 INFO L93 Difference]: Finished difference Result 887 states and 2111 transitions. [2022-02-10 23:06:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 23:06:44,065 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-02-10 23:06:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:44,067 INFO L225 Difference]: With dead ends: 887 [2022-02-10 23:06:44,067 INFO L226 Difference]: Without dead ends: 770 [2022-02-10 23:06:44,068 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 196 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 23:06:44,068 INFO L934 BasicCegarLoop]: 96 mSDtfsCounter, 406 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:44,068 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 798 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:06:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-02-10 23:06:44,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 765. [2022-02-10 23:06:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 2.4489528795811517) internal successors, (1871), 764 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states 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 23:06:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1871 transitions. [2022-02-10 23:06:44,079 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1871 transitions. Word has length 103 [2022-02-10 23:06:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:44,079 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1871 transitions. [2022-02-10 23:06:44,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 23:06:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1871 transitions. [2022-02-10 23:06:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-10 23:06:44,081 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:44,081 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] [2022-02-10 23:06:44,101 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 23:06:44,301 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 23:06:44,302 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1676131039, now seen corresponding path program 6 times [2022-02-10 23:06:44,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:44,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377003204] [2022-02-10 23:06:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:44,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:44,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377003204] [2022-02-10 23:06:44,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377003204] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:44,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962747113] [2022-02-10 23:06:44,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:06:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:44,965 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 23:06:44,965 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 23:06:45,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:06:45,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:45,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:06:45,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:45,566 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 23:06:45,835 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 23:06:45,905 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 23:06:46,045 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 23:06:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:46,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:46,700 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:46,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-02-10 23:06:46,708 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:06:46,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 300 treesize of output 275 [2022-02-10 23:06:46,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 23:06:46,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 180 [2022-02-10 23:06:46,726 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-02-10 23:06:46,727 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 244 treesize of output 196 [2022-02-10 23:06:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:47,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962747113] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:47,166 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:47,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 21] total 55 [2022-02-10 23:06:47,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249700415] [2022-02-10 23:06:47,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:47,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 23:06:47,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:47,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 23:06:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=2414, Unknown=36, NotChecked=0, Total=2970 [2022-02-10 23:06:47,168 INFO L87 Difference]: Start difference. First operand 765 states and 1871 transitions. Second operand has 55 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 23:06:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:49,341 INFO L93 Difference]: Finished difference Result 2494 states and 6290 transitions. [2022-02-10 23:06:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 23:06:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have 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 23:06:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:49,348 INFO L225 Difference]: With dead ends: 2494 [2022-02-10 23:06:49,348 INFO L226 Difference]: Without dead ends: 2093 [2022-02-10 23:06:49,350 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1459, Invalid=6487, Unknown=64, NotChecked=0, Total=8010 [2022-02-10 23:06:49,350 INFO L934 BasicCegarLoop]: 90 mSDtfsCounter, 905 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 523 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:49,350 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 2214 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 700 Invalid, 0 Unknown, 523 Unchecked, 0.3s Time] [2022-02-10 23:06:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2022-02-10 23:06:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 849. [2022-02-10 23:06:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.390330188679245) internal successors, (2027), 848 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states 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 23:06:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2027 transitions. [2022-02-10 23:06:49,367 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2027 transitions. Word has length 107 [2022-02-10 23:06:49,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:49,368 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2027 transitions. [2022-02-10 23:06:49,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 23:06:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2027 transitions. [2022-02-10 23:06:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-10 23:06:49,370 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:49,370 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] [2022-02-10 23:06:49,387 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 23:06:49,586 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 23:06:49,586 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:49,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash 570372965, now seen corresponding path program 7 times [2022-02-10 23:06:49,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:49,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488267011] [2022-02-10 23:06:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:50,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:50,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488267011] [2022-02-10 23:06:50,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488267011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:50,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124322366] [2022-02-10 23:06:50,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:06:50,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:50,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:50,171 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 23:06:50,172 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 23:06:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:50,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-10 23:06:50,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:50,292 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 23:06:50,471 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:06:50,472 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 23:06:51,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-10 23:06:51,236 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:06:51,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:06:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:51,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:51,335 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_235 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_235) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2022-02-10 23:06:51,364 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:51,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-10 23:06:51,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-02-10 23:06:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-02-10 23:06:52,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124322366] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:52,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:52,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 54 [2022-02-10 23:06:52,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209391404] [2022-02-10 23:06:52,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:52,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 23:06:52,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 23:06:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2518, Unknown=1, NotChecked=102, Total=2862 [2022-02-10 23:06:52,495 INFO L87 Difference]: Start difference. First operand 849 states and 2027 transitions. Second operand has 54 states, 54 states have (on average 4.611111111111111) internal successors, (249), 54 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 23:06:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:54,335 INFO L93 Difference]: Finished difference Result 3432 states and 8817 transitions. [2022-02-10 23:06:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 23:06:54,336 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.611111111111111) internal successors, (249), 54 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have 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 23:06:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:54,348 INFO L225 Difference]: With dead ends: 3432 [2022-02-10 23:06:54,348 INFO L226 Difference]: Without dead ends: 2850 [2022-02-10 23:06:54,350 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1024, Invalid=6289, Unknown=1, NotChecked=168, Total=7482 [2022-02-10 23:06:54,350 INFO L934 BasicCegarLoop]: 111 mSDtfsCounter, 1381 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:54,350 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 2902 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 390 Unchecked, 0.5s Time] [2022-02-10 23:06:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2022-02-10 23:06:54,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 853. [2022-02-10 23:06:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.402582159624413) internal successors, (2047), 852 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states 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 23:06:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2047 transitions. [2022-02-10 23:06:54,370 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2047 transitions. Word has length 107 [2022-02-10 23:06:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:54,370 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 2047 transitions. [2022-02-10 23:06:54,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.611111111111111) internal successors, (249), 54 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 23:06:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2047 transitions. [2022-02-10 23:06:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-10 23:06:54,372 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:54,372 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2022-02-10 23:06:54,393 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 23:06:54,591 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 23:06:54,591 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1977634385, now seen corresponding path program 8 times [2022-02-10 23:06:54,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:54,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417413561] [2022-02-10 23:06:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:55,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:55,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417413561] [2022-02-10 23:06:55,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417413561] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:55,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15611483] [2022-02-10 23:06:55,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:06:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:55,017 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 23:06:55,018 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 23:06:55,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:06:55,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:55,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 52 conjunts are in the unsatisfiable core [2022-02-10 23:06:55,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:55,129 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 23:06:55,385 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:06:55,385 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 23:06:55,614 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 23:06:55,860 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 23:06:56,095 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 23:06:56,281 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:06:56,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:06:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:56,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:56,390 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_268 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_268) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-02-10 23:06:57,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:57,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2022-02-10 23:06:57,331 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:57,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 104 [2022-02-10 23:06:57,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 49 [2022-02-10 23:06:57,341 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:06:57,342 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 52 treesize of output 56 [2022-02-10 23:06:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-02-10 23:06:58,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15611483] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:58,914 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:58,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 66 [2022-02-10 23:06:58,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344841555] [2022-02-10 23:06:58,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:58,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-10 23:06:58,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:58,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-10 23:06:58,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=3856, Unknown=7, NotChecked=126, Total=4290 [2022-02-10 23:06:58,917 INFO L87 Difference]: Start difference. First operand 853 states and 2047 transitions. Second operand has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 23:07:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:01,502 INFO L93 Difference]: Finished difference Result 1853 states and 4669 transitions. [2022-02-10 23:07:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 23:07:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-02-10 23:07:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:01,509 INFO L225 Difference]: With dead ends: 1853 [2022-02-10 23:07:01,509 INFO L226 Difference]: Without dead ends: 1723 [2022-02-10 23:07:01,511 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 189 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1149, Invalid=7967, Unknown=8, NotChecked=188, Total=9312 [2022-02-10 23:07:01,511 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 2025 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:01,511 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 3191 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1098 Invalid, 0 Unknown, 806 Unchecked, 0.5s Time] [2022-02-10 23:07:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2022-02-10 23:07:01,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1031. [2022-02-10 23:07:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 2.4349514563106798) internal successors, (2508), 1030 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 23:07:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2508 transitions. [2022-02-10 23:07:01,528 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2508 transitions. Word has length 113 [2022-02-10 23:07:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:01,528 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 2508 transitions. [2022-02-10 23:07:01,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.212121212121212) internal successors, (278), 66 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 23:07:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2508 transitions. [2022-02-10 23:07:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-10 23:07:01,530 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:01,530 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2022-02-10 23:07:01,549 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 23:07:01,748 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 23:07:01,749 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 561755483, now seen corresponding path program 9 times [2022-02-10 23:07:01,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:01,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228699492] [2022-02-10 23:07:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:02,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:02,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228699492] [2022-02-10 23:07:02,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228699492] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:02,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408850998] [2022-02-10 23:07:02,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:07:02,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:02,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:02,318 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 23:07:02,318 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 23:07:02,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:07:02,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:02,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-10 23:07:02,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:02,857 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:07:02,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:07:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:07:02,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:02,936 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:07:02,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-02-10 23:07:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:07:03,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408850998] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:03,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:03,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 41 [2022-02-10 23:07:03,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905156597] [2022-02-10 23:07:03,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:03,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:07:03,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:03,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:07:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:07:03,281 INFO L87 Difference]: Start difference. First operand 1031 states and 2508 transitions. Second operand has 41 states, 41 states have (on average 5.658536585365853) internal successors, (232), 41 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 23:07:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:06,033 INFO L93 Difference]: Finished difference Result 2498 states and 6137 transitions. [2022-02-10 23:07:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 23:07:06,041 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.658536585365853) internal successors, (232), 41 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-02-10 23:07:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:06,045 INFO L225 Difference]: With dead ends: 2498 [2022-02-10 23:07:06,045 INFO L226 Difference]: Without dead ends: 1909 [2022-02-10 23:07:06,046 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1190, Invalid=4816, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 23:07:06,046 INFO L934 BasicCegarLoop]: 171 mSDtfsCounter, 1976 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:06,046 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1976 Valid, 3301 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1047 Invalid, 0 Unknown, 18 Unchecked, 0.5s Time] [2022-02-10 23:07:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2022-02-10 23:07:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1145. [2022-02-10 23:07:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1144 states have (on average 2.4283216783216783) internal successors, (2778), 1144 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states 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 23:07:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 2778 transitions. [2022-02-10 23:07:06,065 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 2778 transitions. Word has length 113 [2022-02-10 23:07:06,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:06,065 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 2778 transitions. [2022-02-10 23:07:06,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.658536585365853) internal successors, (232), 41 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 23:07:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 2778 transitions. [2022-02-10 23:07:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-10 23:07:06,069 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:06,069 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2022-02-10 23:07:06,092 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 23:07:06,287 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 23:07:06,287 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:06,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1201808707, now seen corresponding path program 10 times [2022-02-10 23:07:06,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:06,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632193313] [2022-02-10 23:07:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:06,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:06,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:06,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632193313] [2022-02-10 23:07:06,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632193313] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:06,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049847094] [2022-02-10 23:07:06,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:07:06,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:06,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:06,661 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 23:07:06,664 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 23:07:06,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:07:06,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:06,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-10 23:07:06,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:07,360 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 23:07:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:07,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:07,437 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:07:07,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-02-10 23:07:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:08,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049847094] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:08,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:08,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 45 [2022-02-10 23:07:08,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992105240] [2022-02-10 23:07:08,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:08,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-10 23:07:08,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-10 23:07:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 23:07:08,073 INFO L87 Difference]: Start difference. First operand 1145 states and 2778 transitions. Second operand has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 23:07:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:09,974 INFO L93 Difference]: Finished difference Result 3699 states and 9237 transitions. [2022-02-10 23:07:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 23:07:09,974 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-02-10 23:07:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:09,980 INFO L225 Difference]: With dead ends: 3699 [2022-02-10 23:07:09,980 INFO L226 Difference]: Without dead ends: 2885 [2022-02-10 23:07:09,981 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2291 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1454, Invalid=7476, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 23:07:09,981 INFO L934 BasicCegarLoop]: 156 mSDtfsCounter, 1692 mSDsluCounter, 3319 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:09,982 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 3192 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:07:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-02-10 23:07:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 942. [2022-02-10 23:07:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.4112646121147714) internal successors, (2269), 941 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states 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 23:07:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2269 transitions. [2022-02-10 23:07:10,001 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2269 transitions. Word has length 113 [2022-02-10 23:07:10,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:10,001 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2269 transitions. [2022-02-10 23:07:10,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 23:07:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2269 transitions. [2022-02-10 23:07:10,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-10 23:07:10,003 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:10,003 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-02-10 23:07:10,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:10,219 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 23:07:10,219 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1464522753, now seen corresponding path program 11 times [2022-02-10 23:07:10,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:10,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890030797] [2022-02-10 23:07:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:07:10,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:10,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890030797] [2022-02-10 23:07:10,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890030797] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:10,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506334396] [2022-02-10 23:07:10,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:07:10,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:10,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:10,272 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 23:07:10,273 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 23:07:10,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:07:10,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:10,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 23:07:10,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:07:10,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:07:10,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506334396] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:10,793 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:10,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-02-10 23:07:10,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014085788] [2022-02-10 23:07:10,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:10,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:07:10,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:10,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:07:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:07:10,794 INFO L87 Difference]: Start difference. First operand 942 states and 2269 transitions. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:07:10,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:10,848 INFO L93 Difference]: Finished difference Result 1911 states and 4760 transitions. [2022-02-10 23:07:10,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:07:10,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-02-10 23:07:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:10,851 INFO L225 Difference]: With dead ends: 1911 [2022-02-10 23:07:10,851 INFO L226 Difference]: Without dead ends: 1557 [2022-02-10 23:07:10,851 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:07:10,852 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 356 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:10,852 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 377 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:07:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-02-10 23:07:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1139. [2022-02-10 23:07:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5984182776801408) internal successors, (2957), 1138 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states 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 23:07:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2957 transitions. [2022-02-10 23:07:10,867 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2957 transitions. Word has length 116 [2022-02-10 23:07:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:10,867 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2957 transitions. [2022-02-10 23:07:10,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:07:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2957 transitions. [2022-02-10 23:07:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-10 23:07:10,870 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:10,870 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] [2022-02-10 23:07:10,887 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 23:07:11,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 23:07:11,087 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:11,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:11,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1169480554, now seen corresponding path program 12 times [2022-02-10 23:07:11,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:11,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909142252] [2022-02-10 23:07:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:11,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:11,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:11,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909142252] [2022-02-10 23:07:11,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909142252] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:11,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648055562] [2022-02-10 23:07:11,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:07:11,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:11,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:11,815 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 23:07:11,816 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 23:07:11,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:07:11,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:11,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-10 23:07:11,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:11,911 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 23:07:12,010 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:12,010 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 23:07:12,281 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 23:07:12,323 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 23:07:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-10 23:07:12,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:12,378 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_386 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_386) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-02-10 23:07:12,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:12,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-10 23:07:12,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-02-10 23:07:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 4 not checked. [2022-02-10 23:07:12,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648055562] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:12,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:12,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 37 [2022-02-10 23:07:12,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275100029] [2022-02-10 23:07:12,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:12,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 23:07:12,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 23:07:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1167, Unknown=1, NotChecked=68, Total=1332 [2022-02-10 23:07:12,788 INFO L87 Difference]: Start difference. First operand 1139 states and 2957 transitions. Second operand has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 23:07:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:14,723 INFO L93 Difference]: Finished difference Result 2987 states and 7807 transitions. [2022-02-10 23:07:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 23:07:14,724 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-02-10 23:07:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:14,729 INFO L225 Difference]: With dead ends: 2987 [2022-02-10 23:07:14,729 INFO L226 Difference]: Without dead ends: 2838 [2022-02-10 23:07:14,729 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=745, Invalid=3680, Unknown=1, NotChecked=130, Total=4556 [2022-02-10 23:07:14,729 INFO L934 BasicCegarLoop]: 87 mSDtfsCounter, 1143 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:14,730 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1802 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 784 Invalid, 0 Unknown, 144 Unchecked, 0.3s Time] [2022-02-10 23:07:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2022-02-10 23:07:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 1017. [2022-02-10 23:07:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 2.5118110236220472) internal successors, (2552), 1016 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 23:07:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2552 transitions. [2022-02-10 23:07:14,749 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2552 transitions. Word has length 117 [2022-02-10 23:07:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:14,749 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2552 transitions. [2022-02-10 23:07:14,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 23:07:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2552 transitions. [2022-02-10 23:07:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-10 23:07:14,751 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:14,751 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 23:07:14,768 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 23:07:14,968 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 23:07:14,968 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash -604479388, now seen corresponding path program 13 times [2022-02-10 23:07:14,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:14,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939504467] [2022-02-10 23:07:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:15,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:15,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939504467] [2022-02-10 23:07:15,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939504467] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:15,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593955776] [2022-02-10 23:07:15,595 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:07:15,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:15,596 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 23:07:15,597 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 23:07:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:15,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-10 23:07:15,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:16,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:07:16,574 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 23:07:16,697 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 23:07:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:16,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:16,809 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_419 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-02-10 23:07:16,834 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:16,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:07:16,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:07:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-02-10 23:07:18,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593955776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:18,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:18,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 68 [2022-02-10 23:07:18,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502953407] [2022-02-10 23:07:18,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:18,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-10 23:07:18,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-10 23:07:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=4126, Unknown=1, NotChecked=130, Total=4556 [2022-02-10 23:07:18,083 INFO L87 Difference]: Start difference. First operand 1017 states and 2552 transitions. Second operand has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 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 23:07:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:24,545 INFO L93 Difference]: Finished difference Result 12039 states and 32138 transitions. [2022-02-10 23:07:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-10 23:07:24,545 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 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 120 [2022-02-10 23:07:24,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:24,567 INFO L225 Difference]: With dead ends: 12039 [2022-02-10 23:07:24,567 INFO L226 Difference]: Without dead ends: 10238 [2022-02-10 23:07:24,568 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 6455 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2641, Invalid=22168, Unknown=1, NotChecked=312, Total=25122 [2022-02-10 23:07:24,569 INFO L934 BasicCegarLoop]: 203 mSDtfsCounter, 3746 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 605 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:24,569 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 7002 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2840 Invalid, 0 Unknown, 605 Unchecked, 1.2s Time] [2022-02-10 23:07:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10238 states. [2022-02-10 23:07:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10238 to 2854. [2022-02-10 23:07:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2854 states, 2853 states have (on average 2.734665264633719) internal successors, (7802), 2853 states have internal predecessors, (7802), 0 states have call successors, (0), 0 states 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 23:07:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 7802 transitions. [2022-02-10 23:07:24,671 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 7802 transitions. Word has length 120 [2022-02-10 23:07:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:24,671 INFO L470 AbstractCegarLoop]: Abstraction has 2854 states and 7802 transitions. [2022-02-10 23:07:24,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 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 23:07:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 7802 transitions. [2022-02-10 23:07:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-10 23:07:24,678 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:24,678 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 23:07:24,700 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 23:07:24,900 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 23:07:24,901 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:24,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1573544996, now seen corresponding path program 14 times [2022-02-10 23:07:24,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:24,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993715609] [2022-02-10 23:07:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:24,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:25,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:25,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993715609] [2022-02-10 23:07:25,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993715609] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:25,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787403177] [2022-02-10 23:07:25,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:07:25,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:25,652 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 23:07:25,652 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 23:07:25,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:07:25,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:25,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 23:07:25,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:25,755 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 23:07:25,933 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:25,934 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 23:07:26,777 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 23:07:26,990 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:07:26,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:07:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:27,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:27,115 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_453 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_453) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-02-10 23:07:27,141 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:27,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:07:27,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:07:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-02-10 23:07:28,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787403177] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:28,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:28,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 66 [2022-02-10 23:07:28,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501775105] [2022-02-10 23:07:28,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:28,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-10 23:07:28,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-10 23:07:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3838, Unknown=1, NotChecked=126, Total=4290 [2022-02-10 23:07:28,511 INFO L87 Difference]: Start difference. First operand 2854 states and 7802 transitions. Second operand has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 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 23:07:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:31,864 INFO L93 Difference]: Finished difference Result 6507 states and 17204 transitions. [2022-02-10 23:07:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 23:07:31,864 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 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 120 [2022-02-10 23:07:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:31,876 INFO L225 Difference]: With dead ends: 6507 [2022-02-10 23:07:31,876 INFO L226 Difference]: Without dead ends: 6243 [2022-02-10 23:07:31,877 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3053 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1525, Invalid=12041, Unknown=10, NotChecked=230, Total=13806 [2022-02-10 23:07:31,878 INFO L934 BasicCegarLoop]: 200 mSDtfsCounter, 1617 mSDsluCounter, 6405 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 6204 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 515 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:31,878 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 6204 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1453 Invalid, 0 Unknown, 515 Unchecked, 0.6s Time] [2022-02-10 23:07:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6243 states. [2022-02-10 23:07:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6243 to 2970. [2022-02-10 23:07:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2969 states have (on average 2.7443583698214886) internal successors, (8148), 2969 states have internal predecessors, (8148), 0 states have call successors, (0), 0 states 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 23:07:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 8148 transitions. [2022-02-10 23:07:31,934 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 8148 transitions. Word has length 120 [2022-02-10 23:07:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:31,935 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 8148 transitions. [2022-02-10 23:07:31,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 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 23:07:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 8148 transitions. [2022-02-10 23:07:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-10 23:07:31,940 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:31,940 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 23:07:31,969 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 23:07:32,156 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 23:07:32,156 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash 654844462, now seen corresponding path program 15 times [2022-02-10 23:07:32,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:32,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444807904] [2022-02-10 23:07:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:32,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:32,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:32,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444807904] [2022-02-10 23:07:32,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444807904] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:32,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706176787] [2022-02-10 23:07:32,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:07:32,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:32,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:32,727 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 23:07:32,727 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 23:07:32,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:07:32,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:32,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-10 23:07:32,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:32,913 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 23:07:33,013 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:33,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:07:33,410 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 23:07:33,528 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:07:33,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:07:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:07:33,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:33,644 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_487) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-02-10 23:07:33,666 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:33,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:07:33,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:07:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 2 not checked. [2022-02-10 23:07:34,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706176787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:34,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:34,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 16] total 40 [2022-02-10 23:07:34,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987400725] [2022-02-10 23:07:34,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:34,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:07:34,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:34,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:07:34,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1366, Unknown=1, NotChecked=74, Total=1560 [2022-02-10 23:07:34,198 INFO L87 Difference]: Start difference. First operand 2970 states and 8148 transitions. Second operand has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 23:07:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:36,055 INFO L93 Difference]: Finished difference Result 10487 states and 28918 transitions. [2022-02-10 23:07:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 23:07:36,055 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-02-10 23:07:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:36,071 INFO L225 Difference]: With dead ends: 10487 [2022-02-10 23:07:36,071 INFO L226 Difference]: Without dead ends: 9631 [2022-02-10 23:07:36,072 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 225 SyntacticMatches, 6 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=824, Invalid=5821, Unknown=1, NotChecked=160, Total=6806 [2022-02-10 23:07:36,072 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 1204 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:36,072 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 2569 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 999 Invalid, 0 Unknown, 513 Unchecked, 0.4s Time] [2022-02-10 23:07:36,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2022-02-10 23:07:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 2188. [2022-02-10 23:07:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.7736625514403292) internal successors, (6066), 2187 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states 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 23:07:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6066 transitions. [2022-02-10 23:07:36,140 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6066 transitions. Word has length 120 [2022-02-10 23:07:36,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:36,140 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6066 transitions. [2022-02-10 23:07:36,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 23:07:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6066 transitions. [2022-02-10 23:07:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-10 23:07:36,145 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:36,145 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:36,165 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 23:07:36,359 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 23:07:36,359 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1491316526, now seen corresponding path program 16 times [2022-02-10 23:07:36,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:36,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210716061] [2022-02-10 23:07:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:36,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:37,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:37,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210716061] [2022-02-10 23:07:37,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210716061] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:37,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906823171] [2022-02-10 23:07:37,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:07:37,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:37,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:37,112 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 23:07:37,113 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 23:07:37,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:07:37,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:37,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 23:07:37,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:38,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:07:38,207 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 23:07:38,443 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:07:38,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:07:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:38,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:38,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_520 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_520) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-02-10 23:07:38,621 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:38,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:07:38,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:07:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-02-10 23:07:40,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906823171] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:40,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:40,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 74 [2022-02-10 23:07:40,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105775570] [2022-02-10 23:07:40,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:40,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-10 23:07:40,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-10 23:07:40,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=4891, Unknown=1, NotChecked=142, Total=5402 [2022-02-10 23:07:40,590 INFO L87 Difference]: Start difference. First operand 2188 states and 6066 transitions. Second operand has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 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 23:07:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:49,560 INFO L93 Difference]: Finished difference Result 14888 states and 41225 transitions. [2022-02-10 23:07:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-10 23:07:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 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 126 [2022-02-10 23:07:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:49,583 INFO L225 Difference]: With dead ends: 14888 [2022-02-10 23:07:49,583 INFO L226 Difference]: Without dead ends: 14878 [2022-02-10 23:07:49,584 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 206 SyntacticMatches, 7 SemanticMatches, 152 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 5691 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3272, Invalid=19980, Unknown=8, NotChecked=302, Total=23562 [2022-02-10 23:07:49,585 INFO L934 BasicCegarLoop]: 285 mSDtfsCounter, 2870 mSDsluCounter, 11633 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 11302 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 928 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:49,585 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 11302 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2364 Invalid, 0 Unknown, 928 Unchecked, 1.1s Time] [2022-02-10 23:07:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2022-02-10 23:07:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 4272. [2022-02-10 23:07:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4271 states have (on average 2.9370170920159215) internal successors, (12544), 4271 states have internal predecessors, (12544), 0 states have call successors, (0), 0 states 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 23:07:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 12544 transitions. [2022-02-10 23:07:49,729 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 12544 transitions. Word has length 126 [2022-02-10 23:07:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:49,729 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 12544 transitions. [2022-02-10 23:07:49,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.1891891891891895) internal successors, (310), 74 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 23:07:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 12544 transitions. [2022-02-10 23:07:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-10 23:07:49,736 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:49,737 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:49,767 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 23:07:49,951 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 23:07:49,951 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash -327907100, now seen corresponding path program 17 times [2022-02-10 23:07:49,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:49,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760735696] [2022-02-10 23:07:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:50,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:50,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760735696] [2022-02-10 23:07:50,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760735696] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:50,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600866956] [2022-02-10 23:07:50,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:07:50,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:50,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:50,503 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 23:07:50,504 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 23:07:50,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:07:50,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:50,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 58 conjunts are in the unsatisfiable core [2022-02-10 23:07:50,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:50,613 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 23:07:50,795 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:07:50,795 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 23:07:51,576 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 23:07:51,777 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 23:07:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:51,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:52,050 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:07:52,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:07:52,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:07:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:53,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600866956] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:53,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:53,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 74 [2022-02-10 23:07:53,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667361394] [2022-02-10 23:07:53,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:53,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-10 23:07:53,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-10 23:07:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=5016, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 23:07:53,865 INFO L87 Difference]: Start difference. First operand 4272 states and 12544 transitions. Second operand has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 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 23:08:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:08,025 INFO L93 Difference]: Finished difference Result 31139 states and 87632 transitions. [2022-02-10 23:08:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-02-10 23:08:08,026 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 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 126 [2022-02-10 23:08:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:08,075 INFO L225 Difference]: With dead ends: 31139 [2022-02-10 23:08:08,076 INFO L226 Difference]: Without dead ends: 25597 [2022-02-10 23:08:08,079 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 212 SyntacticMatches, 11 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20292 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=8182, Invalid=57606, Unknown=4, NotChecked=0, Total=65792 [2022-02-10 23:08:08,079 INFO L934 BasicCegarLoop]: 414 mSDtfsCounter, 4728 mSDsluCounter, 17851 mSDsCounter, 0 mSdLazyCounter, 5769 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 16444 SdHoareTripleChecker+Invalid, 7751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1612 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:08,079 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 16444 Invalid, 7751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 5769 Invalid, 0 Unknown, 1612 Unchecked, 2.3s Time] [2022-02-10 23:08:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25597 states. [2022-02-10 23:08:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25597 to 7898. [2022-02-10 23:08:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7898 states, 7897 states have (on average 3.071039635304546) internal successors, (24252), 7897 states have internal predecessors, (24252), 0 states have call successors, (0), 0 states 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 23:08:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 24252 transitions. [2022-02-10 23:08:08,362 INFO L78 Accepts]: Start accepts. Automaton has 7898 states and 24252 transitions. Word has length 126 [2022-02-10 23:08:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:08,362 INFO L470 AbstractCegarLoop]: Abstraction has 7898 states and 24252 transitions. [2022-02-10 23:08:08,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.27027027027027) internal successors, (316), 74 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 23:08:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states and 24252 transitions. [2022-02-10 23:08:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-10 23:08:08,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:08,375 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:08,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:08,591 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 23:08:08,591 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 843957792, now seen corresponding path program 18 times [2022-02-10 23:08:08,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:08,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106922491] [2022-02-10 23:08:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-10 23:08:08,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:08,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106922491] [2022-02-10 23:08:08,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106922491] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:08,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831929664] [2022-02-10 23:08:08,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:08:08,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:08,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:08,832 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 23:08:08,833 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 23:08:08,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:08:08,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:08,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 23:08:08,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:08:09,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-10 23:08:09,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831929664] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:09,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:09,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 9] total 28 [2022-02-10 23:08:09,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414404074] [2022-02-10 23:08:09,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:09,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 23:08:09,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:09,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 23:08:09,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2022-02-10 23:08:09,518 INFO L87 Difference]: Start difference. First operand 7898 states and 24252 transitions. Second operand has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 23:08:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:10,380 INFO L93 Difference]: Finished difference Result 12208 states and 35369 transitions. [2022-02-10 23:08:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:08:10,381 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-02-10 23:08:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:10,400 INFO L225 Difference]: With dead ends: 12208 [2022-02-10 23:08:10,401 INFO L226 Difference]: Without dead ends: 11197 [2022-02-10 23:08:10,401 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=743, Invalid=2119, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 23:08:10,401 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 1675 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:10,402 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 1207 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:08:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11197 states. [2022-02-10 23:08:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11197 to 6266. [2022-02-10 23:08:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 6265 states have (on average 2.8221867517956905) internal successors, (17681), 6265 states have internal predecessors, (17681), 0 states have call successors, (0), 0 states 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 23:08:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 17681 transitions. [2022-02-10 23:08:10,525 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 17681 transitions. Word has length 129 [2022-02-10 23:08:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:10,525 INFO L470 AbstractCegarLoop]: Abstraction has 6266 states and 17681 transitions. [2022-02-10 23:08:10,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 23:08:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 17681 transitions. [2022-02-10 23:08:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-10 23:08:10,535 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:10,535 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:10,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-10 23:08:10,735 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 23:08:10,735 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1221205168, now seen corresponding path program 19 times [2022-02-10 23:08:10,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:10,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884419777] [2022-02-10 23:08:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 25 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-10 23:08:10,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:10,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884419777] [2022-02-10 23:08:10,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884419777] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:10,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455609351] [2022-02-10 23:08:10,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:08:10,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:10,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:10,838 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 23:08:10,841 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 23:08:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:10,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:08:10,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-10 23:08:11,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 19 proven. 39 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-10 23:08:11,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455609351] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:11,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:11,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-02-10 23:08:11,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042983655] [2022-02-10 23:08:11,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:11,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 23:08:11,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:11,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 23:08:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 23:08:11,720 INFO L87 Difference]: Start difference. First operand 6266 states and 17681 transitions. Second operand has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 23:08:12,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:12,049 INFO L93 Difference]: Finished difference Result 3904 states and 10523 transitions. [2022-02-10 23:08:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 23:08:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-02-10 23:08:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:12,053 INFO L225 Difference]: With dead ends: 3904 [2022-02-10 23:08:12,053 INFO L226 Difference]: Without dead ends: 2989 [2022-02-10 23:08:12,054 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=2269, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 23:08:12,054 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 611 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:12,054 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1418 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:08:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2022-02-10 23:08:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2984. [2022-02-10 23:08:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2983 states have (on average 2.7978545088836744) internal successors, (8346), 2983 states have internal predecessors, (8346), 0 states have call successors, (0), 0 states 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 23:08:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 8346 transitions. [2022-02-10 23:08:12,086 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 8346 transitions. Word has length 132 [2022-02-10 23:08:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:12,087 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 8346 transitions. [2022-02-10 23:08:12,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.297297297297297) internal successors, (233), 37 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 23:08:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 8346 transitions. [2022-02-10 23:08:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-10 23:08:12,091 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:12,091 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:12,107 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 23:08:12,291 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 23:08:12,291 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:12,292 INFO L85 PathProgramCache]: Analyzing trace with hash 330603373, now seen corresponding path program 20 times [2022-02-10 23:08:12,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:12,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548442468] [2022-02-10 23:08:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:12,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:12,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:12,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548442468] [2022-02-10 23:08:12,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548442468] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:12,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110705005] [2022-02-10 23:08:12,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:08:12,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:12,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:12,975 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 23:08:12,976 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 23:08:13,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:08:13,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:13,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:08:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:14,107 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:08:14,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:08:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:14,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:14,237 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:08:14,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 17 [2022-02-10 23:08:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:15,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110705005] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:15,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:15,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 61 [2022-02-10 23:08:15,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163086144] [2022-02-10 23:08:15,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:15,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:08:15,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:08:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=3080, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 23:08:15,177 INFO L87 Difference]: Start difference. First operand 2984 states and 8346 transitions. Second operand has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 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 23:08:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:24,606 INFO L93 Difference]: Finished difference Result 38735 states and 104507 transitions. [2022-02-10 23:08:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2022-02-10 23:08:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 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 133 [2022-02-10 23:08:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:24,667 INFO L225 Difference]: With dead ends: 38735 [2022-02-10 23:08:24,667 INFO L226 Difference]: Without dead ends: 30296 [2022-02-10 23:08:24,671 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 233 SyntacticMatches, 5 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26941 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=7614, Invalid=63942, Unknown=0, NotChecked=0, Total=71556 [2022-02-10 23:08:24,671 INFO L934 BasicCegarLoop]: 371 mSDtfsCounter, 4233 mSDsluCounter, 12958 mSDsCounter, 0 mSdLazyCounter, 4365 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4233 SdHoareTripleChecker+Valid, 11907 SdHoareTripleChecker+Invalid, 5949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1256 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:24,671 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4233 Valid, 11907 Invalid, 5949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4365 Invalid, 0 Unknown, 1256 Unchecked, 1.8s Time] [2022-02-10 23:08:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30296 states. [2022-02-10 23:08:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30296 to 7090. [2022-02-10 23:08:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 2.9136690647482015) internal successors, (20655), 7089 states have internal predecessors, (20655), 0 states have call successors, (0), 0 states 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 23:08:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 20655 transitions. [2022-02-10 23:08:24,929 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 20655 transitions. Word has length 133 [2022-02-10 23:08:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:24,929 INFO L470 AbstractCegarLoop]: Abstraction has 7090 states and 20655 transitions. [2022-02-10 23:08:24,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.967213114754099) internal successors, (303), 61 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 23:08:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 20655 transitions. [2022-02-10 23:08:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-10 23:08:24,940 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:24,940 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:24,956 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 23:08:25,143 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 23:08:25,144 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1970216245, now seen corresponding path program 21 times [2022-02-10 23:08:25,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:25,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437034748] [2022-02-10 23:08:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:26,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:26,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437034748] [2022-02-10 23:08:26,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437034748] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:26,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881877393] [2022-02-10 23:08:26,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:08:26,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:26,117 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 23:08:26,117 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 23:08:26,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:08:26,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:26,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:08:26,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:26,746 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:08:26,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:08:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-02-10 23:08:26,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:26,939 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:08:26,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:08:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:08:27,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881877393] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:27,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:27,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 10, 11] total 39 [2022-02-10 23:08:27,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461994200] [2022-02-10 23:08:27,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:27,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:08:27,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:08:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1244, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:08:27,278 INFO L87 Difference]: Start difference. First operand 7090 states and 20655 transitions. Second operand has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 23:08:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:29,702 INFO L93 Difference]: Finished difference Result 10488 states and 29597 transitions. [2022-02-10 23:08:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 23:08:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-10 23:08:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:29,719 INFO L225 Difference]: With dead ends: 10488 [2022-02-10 23:08:29,719 INFO L226 Difference]: Without dead ends: 10469 [2022-02-10 23:08:29,720 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1344, Invalid=6138, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 23:08:29,720 INFO L934 BasicCegarLoop]: 138 mSDtfsCounter, 1095 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:29,720 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 2843 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 673 Invalid, 0 Unknown, 236 Unchecked, 0.4s Time] [2022-02-10 23:08:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2022-02-10 23:08:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 7732. [2022-02-10 23:08:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7732 states, 7731 states have (on average 2.91178372784892) internal successors, (22511), 7731 states have internal predecessors, (22511), 0 states have call successors, (0), 0 states 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 23:08:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7732 states to 7732 states and 22511 transitions. [2022-02-10 23:08:29,836 INFO L78 Accepts]: Start accepts. Automaton has 7732 states and 22511 transitions. Word has length 133 [2022-02-10 23:08:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:29,837 INFO L470 AbstractCegarLoop]: Abstraction has 7732 states and 22511 transitions. [2022-02-10 23:08:29,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.153846153846154) internal successors, (279), 39 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 23:08:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7732 states and 22511 transitions. [2022-02-10 23:08:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-10 23:08:29,849 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:29,849 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:29,864 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 23:08:30,049 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 23:08:30,049 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash 904081163, now seen corresponding path program 22 times [2022-02-10 23:08:30,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:30,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246697453] [2022-02-10 23:08:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:30,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:30,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246697453] [2022-02-10 23:08:30,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246697453] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:30,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086182943] [2022-02-10 23:08:30,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:08:30,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:30,807 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 23:08:30,808 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 23:08:30,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:08:30,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:30,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:08:30,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:31,947 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:08:31,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:08:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:31,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:32,065 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:08:32,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 17 [2022-02-10 23:08:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:33,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086182943] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:33,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:33,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 61 [2022-02-10 23:08:33,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492962882] [2022-02-10 23:08:33,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:33,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:08:33,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:33,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:08:33,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=3081, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 23:08:33,026 INFO L87 Difference]: Start difference. First operand 7732 states and 22511 transitions. Second operand has 61 states, 61 states have (on average 4.934426229508197) internal successors, (301), 61 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 23:08:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:37,557 INFO L93 Difference]: Finished difference Result 21496 states and 57560 transitions. [2022-02-10 23:08:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-10 23:08:37,557 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.934426229508197) internal successors, (301), 61 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 133 [2022-02-10 23:08:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:37,598 INFO L225 Difference]: With dead ends: 21496 [2022-02-10 23:08:37,598 INFO L226 Difference]: Without dead ends: 21076 [2022-02-10 23:08:37,600 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 230 SyntacticMatches, 5 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7059 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2736, Invalid=20216, Unknown=0, NotChecked=0, Total=22952 [2022-02-10 23:08:37,600 INFO L934 BasicCegarLoop]: 330 mSDtfsCounter, 2542 mSDsluCounter, 9314 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 8949 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 521 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:37,600 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2542 Valid, 8949 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2567 Invalid, 0 Unknown, 521 Unchecked, 1.1s Time] [2022-02-10 23:08:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21076 states. [2022-02-10 23:08:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21076 to 7871. [2022-02-10 23:08:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7871 states, 7870 states have (on average 2.903939008894536) internal successors, (22854), 7870 states have internal predecessors, (22854), 0 states have call successors, (0), 0 states 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 23:08:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7871 states to 7871 states and 22854 transitions. [2022-02-10 23:08:37,823 INFO L78 Accepts]: Start accepts. Automaton has 7871 states and 22854 transitions. Word has length 133 [2022-02-10 23:08:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:37,823 INFO L470 AbstractCegarLoop]: Abstraction has 7871 states and 22854 transitions. [2022-02-10 23:08:37,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.934426229508197) internal successors, (301), 61 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 23:08:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7871 states and 22854 transitions. [2022-02-10 23:08:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-10 23:08:37,836 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:37,836 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:37,852 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 23:08:38,036 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 23:08:38,037 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:38,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash -910024841, now seen corresponding path program 23 times [2022-02-10 23:08:38,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:38,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505548164] [2022-02-10 23:08:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:39,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:39,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505548164] [2022-02-10 23:08:39,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505548164] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:39,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052318555] [2022-02-10 23:08:39,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:08:39,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:39,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:39,013 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 23:08:39,014 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 23:08:39,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:08:39,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:39,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-10 23:08:39,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:39,597 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 23:08:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 23:08:39,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:39,663 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:08:39,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 17 [2022-02-10 23:08:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-02-10 23:08:39,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052318555] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:39,855 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:39,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 17, 10] total 40 [2022-02-10 23:08:39,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488358301] [2022-02-10 23:08:39,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:39,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:08:39,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:08:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:08:39,857 INFO L87 Difference]: Start difference. First operand 7871 states and 22854 transitions. Second operand has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 23:08:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:43,116 INFO L93 Difference]: Finished difference Result 16025 states and 44363 transitions. [2022-02-10 23:08:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-10 23:08:43,116 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-10 23:08:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:43,145 INFO L225 Difference]: With dead ends: 16025 [2022-02-10 23:08:43,145 INFO L226 Difference]: Without dead ends: 13420 [2022-02-10 23:08:43,147 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3652 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1128, Invalid=11082, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 23:08:43,147 INFO L934 BasicCegarLoop]: 173 mSDtfsCounter, 1170 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:43,147 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 4339 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 23:08:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13420 states. [2022-02-10 23:08:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13420 to 5522. [2022-02-10 23:08:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 5521 states have (on average 2.857634486506068) internal successors, (15777), 5521 states have internal predecessors, (15777), 0 states have call successors, (0), 0 states 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 23:08:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 15777 transitions. [2022-02-10 23:08:43,274 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 15777 transitions. Word has length 133 [2022-02-10 23:08:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:43,274 INFO L470 AbstractCegarLoop]: Abstraction has 5522 states and 15777 transitions. [2022-02-10 23:08:43,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.7) internal successors, (228), 40 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 23:08:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 15777 transitions. [2022-02-10 23:08:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-10 23:08:43,282 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:43,282 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:43,299 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 23:08:43,482 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 23:08:43,483 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2069477215, now seen corresponding path program 24 times [2022-02-10 23:08:43,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:43,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546791262] [2022-02-10 23:08:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:44,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:44,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546791262] [2022-02-10 23:08:44,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546791262] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:44,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305205623] [2022-02-10 23:08:44,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:08:44,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:44,167 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 23:08:44,167 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 23:08:44,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:08:44,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:44,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 23:08:44,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:45,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:08:45,924 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 23:08:46,117 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 23:08:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:46,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:46,285 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_799) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-02-10 23:08:46,379 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:08:46,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:08:46,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:08:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-02-10 23:08:48,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305205623] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:48,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:48,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 83 [2022-02-10 23:08:48,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461854731] [2022-02-10 23:08:48,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:48,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-10 23:08:48,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-10 23:08:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=6137, Unknown=1, NotChecked=160, Total=6806 [2022-02-10 23:08:48,073 INFO L87 Difference]: Start difference. First operand 5522 states and 15777 transitions. Second operand has 83 states, 83 states have (on average 4.168674698795181) internal successors, (346), 83 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 23:09:05,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:05,907 INFO L93 Difference]: Finished difference Result 38272 states and 104555 transitions. [2022-02-10 23:09:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-02-10 23:09:05,907 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 4.168674698795181) internal successors, (346), 83 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-02-10 23:09:05,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:05,980 INFO L225 Difference]: With dead ends: 38272 [2022-02-10 23:09:05,980 INFO L226 Difference]: Without dead ends: 34864 [2022-02-10 23:09:05,983 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 220 SyntacticMatches, 6 SemanticMatches, 257 ConstructedPredicates, 1 IntricatePredicates, 11 DeprecatedPredicates, 20211 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=9147, Invalid=57084, Unknown=79, NotChecked=512, Total=66822 [2022-02-10 23:09:05,983 INFO L934 BasicCegarLoop]: 438 mSDtfsCounter, 5996 mSDsluCounter, 20375 mSDsCounter, 0 mSdLazyCounter, 6167 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5996 SdHoareTripleChecker+Valid, 18735 SdHoareTripleChecker+Invalid, 9622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 6167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2870 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:05,984 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [5996 Valid, 18735 Invalid, 9622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 6167 Invalid, 0 Unknown, 2870 Unchecked, 2.7s Time] [2022-02-10 23:09:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34864 states. [2022-02-10 23:09:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34864 to 9871. [2022-02-10 23:09:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9871 states, 9870 states have (on average 3.024316109422492) internal successors, (29850), 9870 states have internal predecessors, (29850), 0 states have call successors, (0), 0 states 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 23:09:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 29850 transitions. [2022-02-10 23:09:06,300 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 29850 transitions. Word has length 136 [2022-02-10 23:09:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:06,300 INFO L470 AbstractCegarLoop]: Abstraction has 9871 states and 29850 transitions. [2022-02-10 23:09:06,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 4.168674698795181) internal successors, (346), 83 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 23:09:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 29850 transitions. [2022-02-10 23:09:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:09:06,314 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:06,314 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:06,330 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 23:09:06,516 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 23:09:06,516 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2010186831, now seen corresponding path program 25 times [2022-02-10 23:09:06,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:06,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289738747] [2022-02-10 23:09:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:06,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:07,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:07,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289738747] [2022-02-10 23:09:07,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289738747] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:07,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935013405] [2022-02-10 23:09:07,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:09:07,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:07,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:07,251 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 23:09:07,253 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 23:09:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:07,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 23:09:07,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:07,370 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 23:09:07,565 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:09:07,566 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 23:09:08,667 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 23:09:08,970 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:09:08,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:09:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:08,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:09,167 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_837 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_837) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2022-02-10 23:09:09,192 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:09:09,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-02-10 23:09:09,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:09:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-02-10 23:09:12,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935013405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:12,000 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:12,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 84 [2022-02-10 23:09:12,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381860551] [2022-02-10 23:09:12,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:12,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-10 23:09:12,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:12,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-10 23:09:12,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=6290, Unknown=1, NotChecked=162, Total=6972 [2022-02-10 23:09:12,003 INFO L87 Difference]: Start difference. First operand 9871 states and 29850 transitions. Second operand has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 23:09:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:29,774 INFO L93 Difference]: Finished difference Result 76582 states and 223009 transitions. [2022-02-10 23:09:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-02-10 23:09:29,774 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have 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 23:09:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:29,976 INFO L225 Difference]: With dead ends: 76582 [2022-02-10 23:09:29,977 INFO L226 Difference]: Without dead ends: 76572 [2022-02-10 23:09:29,980 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 276 SyntacticMatches, 12 SemanticMatches, 277 ConstructedPredicates, 1 IntricatePredicates, 17 DeprecatedPredicates, 22762 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=10283, Invalid=66717, Unknown=10, NotChecked=552, Total=77562 [2022-02-10 23:09:29,980 INFO L934 BasicCegarLoop]: 860 mSDtfsCounter, 2060 mSDsluCounter, 31563 mSDsCounter, 0 mSdLazyCounter, 6219 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 31967 SdHoareTripleChecker+Invalid, 10434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 6219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4023 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:29,980 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2060 Valid, 31967 Invalid, 10434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 6219 Invalid, 0 Unknown, 4023 Unchecked, 2.5s Time] [2022-02-10 23:09:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76572 states. [2022-02-10 23:09:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76572 to 12960. [2022-02-10 23:09:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12960 states, 12959 states have (on average 3.0635851531753993) internal successors, (39701), 12959 states have internal predecessors, (39701), 0 states have call successors, (0), 0 states 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 23:09:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12960 states to 12960 states and 39701 transitions. [2022-02-10 23:09:30,726 INFO L78 Accepts]: Start accepts. Automaton has 12960 states and 39701 transitions. Word has length 139 [2022-02-10 23:09:30,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:30,727 INFO L470 AbstractCegarLoop]: Abstraction has 12960 states and 39701 transitions. [2022-02-10 23:09:30,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.107142857142857) internal successors, (345), 84 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 23:09:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12960 states and 39701 transitions. [2022-02-10 23:09:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:09:30,744 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:30,745 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:30,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:30,945 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 23:09:30,946 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:30,946 INFO L85 PathProgramCache]: Analyzing trace with hash -583514407, now seen corresponding path program 26 times [2022-02-10 23:09:30,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:30,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244914029] [2022-02-10 23:09:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:31,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:31,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244914029] [2022-02-10 23:09:31,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244914029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:31,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483952606] [2022-02-10 23:09:31,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:09:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:31,640 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 23:09:31,641 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 23:09:31,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:09:31,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:31,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 23:09:31,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:33,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:09:33,189 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 23:09:33,460 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 23:09:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:33,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:33,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_874) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)) 5)) is different from false [2022-02-10 23:09:33,699 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:09:33,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:09:33,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:09:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-02-10 23:09:35,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483952606] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:35,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:35,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 86 [2022-02-10 23:09:35,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346174480] [2022-02-10 23:09:35,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:35,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-10 23:09:35,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:35,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-10 23:09:35,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=6610, Unknown=1, NotChecked=166, Total=7310 [2022-02-10 23:09:35,608 INFO L87 Difference]: Start difference. First operand 12960 states and 39701 transitions. Second operand has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 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 23:10:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:05,259 INFO L93 Difference]: Finished difference Result 70015 states and 196984 transitions. [2022-02-10 23:10:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2022-02-10 23:10:05,259 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 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 139 [2022-02-10 23:10:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:05,461 INFO L225 Difference]: With dead ends: 70015 [2022-02-10 23:10:05,461 INFO L226 Difference]: Without dead ends: 64281 [2022-02-10 23:10:05,466 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 224 SyntacticMatches, 24 SemanticMatches, 347 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42063 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=16627, Invalid=104132, Unknown=1, NotChecked=692, Total=121452 [2022-02-10 23:10:05,467 INFO L934 BasicCegarLoop]: 888 mSDtfsCounter, 8178 mSDsluCounter, 44018 mSDsCounter, 0 mSdLazyCounter, 12487 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8178 SdHoareTripleChecker+Valid, 40805 SdHoareTripleChecker+Invalid, 15343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 12487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2058 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:05,467 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [8178 Valid, 40805 Invalid, 15343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [798 Valid, 12487 Invalid, 0 Unknown, 2058 Unchecked, 5.4s Time] [2022-02-10 23:10:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64281 states. [2022-02-10 23:10:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64281 to 17905. [2022-02-10 23:10:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17905 states, 17904 states have (on average 3.1076854334226987) internal successors, (55640), 17904 states have internal predecessors, (55640), 0 states have call successors, (0), 0 states 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 23:10:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17905 states to 17905 states and 55640 transitions. [2022-02-10 23:10:06,208 INFO L78 Accepts]: Start accepts. Automaton has 17905 states and 55640 transitions. Word has length 139 [2022-02-10 23:10:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:06,208 INFO L470 AbstractCegarLoop]: Abstraction has 17905 states and 55640 transitions. [2022-02-10 23:10:06,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.127906976744186) internal successors, (355), 86 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 23:10:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 17905 states and 55640 transitions. [2022-02-10 23:10:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:06,233 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:06,234 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:06,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 23:10:06,435 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 23:10:06,436 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:06,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1468962555, now seen corresponding path program 27 times [2022-02-10 23:10:06,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:06,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895566385] [2022-02-10 23:10:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:07,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:07,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895566385] [2022-02-10 23:10:07,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895566385] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:07,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48275662] [2022-02-10 23:10:07,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:10:07,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:07,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:07,161 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 23:10:07,162 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 23:10:07,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:10:07,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:07,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 23:10:07,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:08,334 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:10:08,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:10:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-10 23:10:08,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:08,637 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:10:08,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:10:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-10 23:10:09,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48275662] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:09,155 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:09,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 21] total 61 [2022-02-10 23:10:09,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154283348] [2022-02-10 23:10:09,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:09,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:10:09,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:10:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3216, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 23:10:09,156 INFO L87 Difference]: Start difference. First operand 17905 states and 55640 transitions. Second operand has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 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 23:10:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:12,913 INFO L93 Difference]: Finished difference Result 37055 states and 105551 transitions. [2022-02-10 23:10:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 23:10:12,913 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 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 139 [2022-02-10 23:10:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:12,992 INFO L225 Difference]: With dead ends: 37055 [2022-02-10 23:10:12,993 INFO L226 Difference]: Without dead ends: 35156 [2022-02-10 23:10:12,994 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5172 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2650, Invalid=16256, Unknown=0, NotChecked=0, Total=18906 [2022-02-10 23:10:12,995 INFO L934 BasicCegarLoop]: 236 mSDtfsCounter, 1950 mSDsluCounter, 5620 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 5541 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1212 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:12,995 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 5541 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 963 Invalid, 0 Unknown, 1212 Unchecked, 0.4s Time] [2022-02-10 23:10:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35156 states. [2022-02-10 23:10:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35156 to 17657. [2022-02-10 23:10:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17657 states, 17656 states have (on average 2.942852288173992) internal successors, (51959), 17656 states have internal predecessors, (51959), 0 states have call successors, (0), 0 states 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 23:10:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17657 states to 17657 states and 51959 transitions. [2022-02-10 23:10:13,506 INFO L78 Accepts]: Start accepts. Automaton has 17657 states and 51959 transitions. Word has length 139 [2022-02-10 23:10:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:13,506 INFO L470 AbstractCegarLoop]: Abstraction has 17657 states and 51959 transitions. [2022-02-10 23:10:13,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 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 23:10:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 17657 states and 51959 transitions. [2022-02-10 23:10:13,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:13,525 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:13,525 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:13,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 23:10:13,733 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 23:10:13,733 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash 900063931, now seen corresponding path program 28 times [2022-02-10 23:10:13,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:13,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999847156] [2022-02-10 23:10:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:13,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:14,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:14,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999847156] [2022-02-10 23:10:14,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999847156] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:14,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476315266] [2022-02-10 23:10:14,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:10:14,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:14,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:14,353 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 23:10:14,356 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 23:10:14,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:10:14,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:14,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 23:10:14,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:15,651 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:10:15,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:10:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:15,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:15,810 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:10:15,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 17 [2022-02-10 23:10:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:17,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476315266] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:17,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:17,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-02-10 23:10:17,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422697653] [2022-02-10 23:10:17,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:17,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-10 23:10:17,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-10 23:10:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=4163, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 23:10:17,446 INFO L87 Difference]: Start difference. First operand 17657 states and 51959 transitions. Second operand has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:22,197 INFO L93 Difference]: Finished difference Result 21153 states and 56447 transitions. [2022-02-10 23:10:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 23:10:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-02-10 23:10:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:22,228 INFO L225 Difference]: With dead ends: 21153 [2022-02-10 23:10:22,228 INFO L226 Difference]: Without dead ends: 18122 [2022-02-10 23:10:22,229 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2980, Invalid=19072, Unknown=0, NotChecked=0, Total=22052 [2022-02-10 23:10:22,230 INFO L934 BasicCegarLoop]: 269 mSDtfsCounter, 2373 mSDsluCounter, 8299 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 7957 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:22,230 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2373 Valid, 7957 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1994 Invalid, 0 Unknown, 429 Unchecked, 0.8s Time] [2022-02-10 23:10:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18122 states. [2022-02-10 23:10:22,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18122 to 10708. [2022-02-10 23:10:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10708 states, 10707 states have (on average 2.767535257308303) internal successors, (29632), 10707 states have internal predecessors, (29632), 0 states have call successors, (0), 0 states 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 23:10:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 29632 transitions. [2022-02-10 23:10:22,443 INFO L78 Accepts]: Start accepts. Automaton has 10708 states and 29632 transitions. Word has length 139 [2022-02-10 23:10:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:22,444 INFO L470 AbstractCegarLoop]: Abstraction has 10708 states and 29632 transitions. [2022-02-10 23:10:22,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 10708 states and 29632 transitions. [2022-02-10 23:10:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:22,457 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:22,457 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:22,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-10 23:10:22,658 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 23:10:22,658 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash 441584335, now seen corresponding path program 29 times [2022-02-10 23:10:22,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:22,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976763472] [2022-02-10 23:10:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:23,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:23,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976763472] [2022-02-10 23:10:23,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976763472] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:23,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169302563] [2022-02-10 23:10:23,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:10:23,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:23,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:23,257 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 23:10:23,258 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 23:10:23,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:10:23,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:23,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 23:10:23,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:24,598 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:10:24,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:10:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:24,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:24,751 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:10:24,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 17 [2022-02-10 23:10:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:26,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169302563] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:26,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:26,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-02-10 23:10:26,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300586038] [2022-02-10 23:10:26,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:26,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-10 23:10:26,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-10 23:10:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=4163, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 23:10:26,390 INFO L87 Difference]: Start difference. First operand 10708 states and 29632 transitions. Second operand has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:35,175 INFO L93 Difference]: Finished difference Result 27059 states and 70480 transitions. [2022-02-10 23:10:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-10 23:10:35,175 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-02-10 23:10:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:35,224 INFO L225 Difference]: With dead ends: 27059 [2022-02-10 23:10:35,224 INFO L226 Difference]: Without dead ends: 24478 [2022-02-10 23:10:35,227 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10390 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=4997, Invalid=31675, Unknown=0, NotChecked=0, Total=36672 [2022-02-10 23:10:35,227 INFO L934 BasicCegarLoop]: 402 mSDtfsCounter, 2345 mSDsluCounter, 12591 mSDsCounter, 0 mSdLazyCounter, 4091 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 11939 SdHoareTripleChecker+Invalid, 4554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:35,228 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2345 Valid, 11939 Invalid, 4554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 4091 Invalid, 0 Unknown, 317 Unchecked, 1.6s Time] [2022-02-10 23:10:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24478 states. [2022-02-10 23:10:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24478 to 11641. [2022-02-10 23:10:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11641 states, 11640 states have (on average 2.777319587628866) internal successors, (32328), 11640 states have internal predecessors, (32328), 0 states have call successors, (0), 0 states 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 23:10:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11641 states to 11641 states and 32328 transitions. [2022-02-10 23:10:35,608 INFO L78 Accepts]: Start accepts. Automaton has 11641 states and 32328 transitions. Word has length 139 [2022-02-10 23:10:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:35,609 INFO L470 AbstractCegarLoop]: Abstraction has 11641 states and 32328 transitions. [2022-02-10 23:10:35,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 11641 states and 32328 transitions. [2022-02-10 23:10:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:35,622 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:35,623 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:35,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 23:10:35,823 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 23:10:35,823 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1372521669, now seen corresponding path program 30 times [2022-02-10 23:10:35,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:35,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78888841] [2022-02-10 23:10:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:36,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:36,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78888841] [2022-02-10 23:10:36,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78888841] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:36,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114394950] [2022-02-10 23:10:36,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:10:36,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:36,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:36,436 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 23:10:36,437 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 23:10:36,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:10:36,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:36,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-10 23:10:36,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:37,721 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:10:37,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:10:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-10 23:10:37,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:38,009 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:10:38,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:10:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-10 23:10:38,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114394950] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:38,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:38,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 21] total 61 [2022-02-10 23:10:38,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750572931] [2022-02-10 23:10:38,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:38,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:10:38,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:38,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:10:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3216, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 23:10:38,555 INFO L87 Difference]: Start difference. First operand 11641 states and 32328 transitions. Second operand has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 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 23:10:41,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:41,345 INFO L93 Difference]: Finished difference Result 18034 states and 48010 transitions. [2022-02-10 23:10:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 23:10:41,345 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 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 139 [2022-02-10 23:10:41,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:41,375 INFO L225 Difference]: With dead ends: 18034 [2022-02-10 23:10:41,375 INFO L226 Difference]: Without dead ends: 17742 [2022-02-10 23:10:41,376 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 271 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3675 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2180, Invalid=12100, Unknown=0, NotChecked=0, Total=14280 [2022-02-10 23:10:41,377 INFO L934 BasicCegarLoop]: 220 mSDtfsCounter, 1376 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 5254 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:41,377 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 5254 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 861 Invalid, 0 Unknown, 1107 Unchecked, 0.3s Time] [2022-02-10 23:10:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17742 states. [2022-02-10 23:10:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17742 to 13319. [2022-02-10 23:10:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 13318 states have (on average 2.7597987685838716) internal successors, (36755), 13318 states have internal predecessors, (36755), 0 states have call successors, (0), 0 states 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 23:10:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 36755 transitions. [2022-02-10 23:10:41,633 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 36755 transitions. Word has length 139 [2022-02-10 23:10:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:41,633 INFO L470 AbstractCegarLoop]: Abstraction has 13319 states and 36755 transitions. [2022-02-10 23:10:41,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.885245901639344) internal successors, (298), 61 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 23:10:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 36755 transitions. [2022-02-10 23:10:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:41,646 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:41,646 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:41,663 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 23:10:41,847 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 23:10:41,847 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1772191783, now seen corresponding path program 31 times [2022-02-10 23:10:41,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:41,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286577477] [2022-02-10 23:10:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:41,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:42,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:42,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286577477] [2022-02-10 23:10:42,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286577477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:42,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877401723] [2022-02-10 23:10:42,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:10:42,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:42,468 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 23:10:42,469 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 23:10:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:42,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:10:42,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:43,718 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:10:43,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:10:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:43,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:43,838 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:10:43,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-02-10 23:10:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:45,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877401723] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:45,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:45,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-02-10 23:10:45,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951543193] [2022-02-10 23:10:45,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:45,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-10 23:10:45,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-10 23:10:45,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=4133, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 23:10:45,500 INFO L87 Difference]: Start difference. First operand 13319 states and 36755 transitions. Second operand has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:59,046 INFO L93 Difference]: Finished difference Result 35422 states and 92942 transitions. [2022-02-10 23:10:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2022-02-10 23:10:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-02-10 23:10:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:59,114 INFO L225 Difference]: With dead ends: 35422 [2022-02-10 23:10:59,115 INFO L226 Difference]: Without dead ends: 29969 [2022-02-10 23:10:59,118 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23324 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=7636, Invalid=61796, Unknown=0, NotChecked=0, Total=69432 [2022-02-10 23:10:59,119 INFO L934 BasicCegarLoop]: 556 mSDtfsCounter, 3920 mSDsluCounter, 17731 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3920 SdHoareTripleChecker+Valid, 16543 SdHoareTripleChecker+Invalid, 6167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 792 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:59,119 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3920 Valid, 16543 Invalid, 6167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 4952 Invalid, 0 Unknown, 792 Unchecked, 2.2s Time] [2022-02-10 23:10:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29969 states. [2022-02-10 23:10:59,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29969 to 11715. [2022-02-10 23:10:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11715 states, 11714 states have (on average 2.768396790165614) internal successors, (32429), 11714 states have internal predecessors, (32429), 0 states have call successors, (0), 0 states 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 23:10:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11715 states to 11715 states and 32429 transitions. [2022-02-10 23:10:59,428 INFO L78 Accepts]: Start accepts. Automaton has 11715 states and 32429 transitions. Word has length 139 [2022-02-10 23:10:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:59,428 INFO L470 AbstractCegarLoop]: Abstraction has 11715 states and 32429 transitions. [2022-02-10 23:10:59,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.884057971014493) internal successors, (337), 69 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 11715 states and 32429 transitions. [2022-02-10 23:10:59,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:10:59,438 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:59,438 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:59,455 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 23:10:59,638 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 23:10:59,639 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:59,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1803486843, now seen corresponding path program 32 times [2022-02-10 23:10:59,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:59,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712966549] [2022-02-10 23:10:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:00,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:00,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712966549] [2022-02-10 23:11:00,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712966549] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:00,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279243756] [2022-02-10 23:11:00,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:11:00,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:00,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:00,480 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 23:11:00,482 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 23:11:00,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:11:00,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:00,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 23:11:00,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:01,610 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:11:01,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:11:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:01,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:01,698 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:11:01,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:11:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:03,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279243756] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:03,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:03,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 70 [2022-02-10 23:11:03,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369877233] [2022-02-10 23:11:03,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:03,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-10 23:11:03,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:03,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-10 23:11:03,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=623, Invalid=4207, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 23:11:03,373 INFO L87 Difference]: Start difference. First operand 11715 states and 32429 transitions. Second operand has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 23:11:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:11,522 INFO L93 Difference]: Finished difference Result 13485 states and 35220 transitions. [2022-02-10 23:11:11,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-10 23:11:11,522 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have 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 23:11:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:11,540 INFO L225 Difference]: With dead ends: 13485 [2022-02-10 23:11:11,540 INFO L226 Difference]: Without dead ends: 11254 [2022-02-10 23:11:11,543 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8981 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=4193, Invalid=26959, Unknown=0, NotChecked=0, Total=31152 [2022-02-10 23:11:11,544 INFO L934 BasicCegarLoop]: 362 mSDtfsCounter, 3815 mSDsluCounter, 8913 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3815 SdHoareTripleChecker+Valid, 8491 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:11,544 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3815 Valid, 8491 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2360 Invalid, 0 Unknown, 235 Unchecked, 1.2s Time] [2022-02-10 23:11:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11254 states. [2022-02-10 23:11:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11254 to 5657. [2022-02-10 23:11:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5657 states, 5656 states have (on average 2.6865275813295617) internal successors, (15195), 5656 states have internal predecessors, (15195), 0 states have call successors, (0), 0 states 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 23:11:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5657 states to 5657 states and 15195 transitions. [2022-02-10 23:11:11,689 INFO L78 Accepts]: Start accepts. Automaton has 5657 states and 15195 transitions. Word has length 139 [2022-02-10 23:11:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:11,690 INFO L470 AbstractCegarLoop]: Abstraction has 5657 states and 15195 transitions. [2022-02-10 23:11:11,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 23:11:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5657 states and 15195 transitions. [2022-02-10 23:11:11,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:11:11,696 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:11,696 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:11,712 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 23:11:11,896 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 23:11:11,896 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:11,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1731393767, now seen corresponding path program 33 times [2022-02-10 23:11:11,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:11,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645413253] [2022-02-10 23:11:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:11,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:12,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:12,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645413253] [2022-02-10 23:11:12,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645413253] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:12,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878217793] [2022-02-10 23:11:12,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:11:12,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:12,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:12,683 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 23:11:12,683 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 23:11:13,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:11:13,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:13,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 23:11:13,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:13,871 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:11:13,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:11:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-10 23:11:13,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:14,174 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:11:14,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:11:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 78 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-10 23:11:14,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878217793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:14,765 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:14,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21, 22] total 62 [2022-02-10 23:11:14,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501910231] [2022-02-10 23:11:14,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:14,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-10 23:11:14,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-10 23:11:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=3472, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 23:11:14,767 INFO L87 Difference]: Start difference. First operand 5657 states and 15195 transitions. Second operand has 62 states, 62 states have (on average 4.983870967741935) internal successors, (309), 62 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:24,408 INFO L93 Difference]: Finished difference Result 12678 states and 30468 transitions. [2022-02-10 23:11:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-10 23:11:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.983870967741935) internal successors, (309), 62 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-02-10 23:11:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:24,424 INFO L225 Difference]: With dead ends: 12678 [2022-02-10 23:11:24,424 INFO L226 Difference]: Without dead ends: 11433 [2022-02-10 23:11:24,426 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 289 SyntacticMatches, 31 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9585 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=4334, Invalid=24058, Unknown=0, NotChecked=0, Total=28392 [2022-02-10 23:11:24,426 INFO L934 BasicCegarLoop]: 264 mSDtfsCounter, 3321 mSDsluCounter, 8672 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 8057 SdHoareTripleChecker+Invalid, 3820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2147 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:24,427 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3321 Valid, 8057 Invalid, 3820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1458 Invalid, 0 Unknown, 2147 Unchecked, 0.7s Time] [2022-02-10 23:11:24,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2022-02-10 23:11:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 6609. [2022-02-10 23:11:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6609 states, 6608 states have (on average 2.6331719128329296) internal successors, (17400), 6608 states have internal predecessors, (17400), 0 states have call successors, (0), 0 states 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 23:11:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6609 states to 6609 states and 17400 transitions. [2022-02-10 23:11:24,542 INFO L78 Accepts]: Start accepts. Automaton has 6609 states and 17400 transitions. Word has length 139 [2022-02-10 23:11:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:24,543 INFO L470 AbstractCegarLoop]: Abstraction has 6609 states and 17400 transitions. [2022-02-10 23:11:24,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.983870967741935) internal successors, (309), 62 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 6609 states and 17400 transitions. [2022-02-10 23:11:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-02-10 23:11:24,552 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:24,552 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:24,569 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 23:11:24,753 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 23:11:24,753 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:24,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1645801807, now seen corresponding path program 34 times [2022-02-10 23:11:24,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:24,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462424148] [2022-02-10 23:11:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:25,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:25,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462424148] [2022-02-10 23:11:25,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462424148] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:25,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700476323] [2022-02-10 23:11:25,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:11:25,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:25,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:25,363 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 23:11:25,364 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 23:11:25,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:11:25,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:25,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-10 23:11:25,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:26,718 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:11:26,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:11:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:26,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:26,878 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:11:26,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 17 [2022-02-10 23:11:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:28,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700476323] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:28,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:28,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 69 [2022-02-10 23:11:28,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784902376] [2022-02-10 23:11:28,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:28,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-10 23:11:28,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:28,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-10 23:11:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=4116, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 23:11:28,081 INFO L87 Difference]: Start difference. First operand 6609 states and 17400 transitions. Second operand has 69 states, 69 states have (on average 4.855072463768116) internal successors, (335), 69 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 23:11:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:39,652 INFO L93 Difference]: Finished difference Result 30564 states and 79483 transitions. [2022-02-10 23:11:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-10 23:11:39,652 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.855072463768116) internal successors, (335), 69 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have 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 23:11:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:39,694 INFO L225 Difference]: With dead ends: 30564 [2022-02-10 23:11:39,694 INFO L226 Difference]: Without dead ends: 24418 [2022-02-10 23:11:39,699 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24963 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=6588, Invalid=64968, Unknown=0, NotChecked=0, Total=71556 [2022-02-10 23:11:39,699 INFO L934 BasicCegarLoop]: 246 mSDtfsCounter, 3713 mSDsluCounter, 11093 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 10089 SdHoareTripleChecker+Invalid, 5196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1072 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:39,700 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3713 Valid, 10089 Invalid, 5196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 3772 Invalid, 0 Unknown, 1072 Unchecked, 1.6s Time] [2022-02-10 23:11:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24418 states. [2022-02-10 23:11:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24418 to 6590. [2022-02-10 23:11:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 6589 states have (on average 2.7070875701927455) internal successors, (17837), 6589 states have internal predecessors, (17837), 0 states have call successors, (0), 0 states 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 23:11:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 17837 transitions. [2022-02-10 23:11:39,900 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 17837 transitions. Word has length 139 [2022-02-10 23:11:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:39,901 INFO L470 AbstractCegarLoop]: Abstraction has 6590 states and 17837 transitions. [2022-02-10 23:11:39,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.855072463768116) internal successors, (335), 69 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 23:11:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 17837 transitions. [2022-02-10 23:11:39,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-02-10 23:11:39,907 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:39,907 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:39,924 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 23:11:40,107 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 23:11:40,108 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:40,108 INFO L85 PathProgramCache]: Analyzing trace with hash 921915743, now seen corresponding path program 35 times [2022-02-10 23:11:40,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:40,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704180177] [2022-02-10 23:11:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:11:40,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:40,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704180177] [2022-02-10 23:11:40,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704180177] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:40,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777834763] [2022-02-10 23:11:40,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:11:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:40,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:40,217 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 23:11:40,219 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 23:11:40,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 23:11:40,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:40,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:11:40,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:11:40,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-10 23:11:40,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777834763] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:40,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:40,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 11] total 16 [2022-02-10 23:11:40,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972286158] [2022-02-10 23:11:40,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:40,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 23:11:40,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 23:11:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-02-10 23:11:40,950 INFO L87 Difference]: Start difference. First operand 6590 states and 17837 transitions. Second operand has 16 states, 16 states have (on average 12.6875) internal successors, (203), 16 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:41,031 INFO L93 Difference]: Finished difference Result 11444 states and 31328 transitions. [2022-02-10 23:11:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:11:41,032 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.6875) internal successors, (203), 16 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-02-10 23:11:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:41,048 INFO L225 Difference]: With dead ends: 11444 [2022-02-10 23:11:41,048 INFO L226 Difference]: Without dead ends: 10022 [2022-02-10 23:11:41,048 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-02-10 23:11:41,048 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 690 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:41,049 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 572 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:11:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2022-02-10 23:11:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 6968. [2022-02-10 23:11:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6967 states have (on average 2.8889048370891346) internal successors, (20127), 6967 states have internal predecessors, (20127), 0 states have call successors, (0), 0 states 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 23:11:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 20127 transitions. [2022-02-10 23:11:41,163 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 20127 transitions. Word has length 142 [2022-02-10 23:11:41,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:41,164 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 20127 transitions. [2022-02-10 23:11:41,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.6875) internal successors, (203), 16 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:11:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 20127 transitions. [2022-02-10 23:11:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-02-10 23:11:41,171 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:41,171 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:41,187 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 23:11:41,372 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 23:11:41,372 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1653362510, now seen corresponding path program 36 times [2022-02-10 23:11:41,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:41,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992832083] [2022-02-10 23:11:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:41,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:42,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:42,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992832083] [2022-02-10 23:11:42,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992832083] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:42,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559089999] [2022-02-10 23:11:42,146 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:11:42,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:42,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:42,149 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 23:11:42,149 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 23:11:42,443 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 23:11:42,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:11:42,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 23:11:42,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:43,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 23:11:43,238 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 23:11:43,499 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:11:43,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:11:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-02-10 23:11:43,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:43,663 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1239 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1239) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-02-10 23:11:43,680 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:11:43,680 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-02-10 23:11:43,684 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 14 treesize of output 7 [2022-02-10 23:11:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 75 trivial. 7 not checked. [2022-02-10 23:11:44,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559089999] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:44,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:44,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22, 18] total 61 [2022-02-10 23:11:44,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955099139] [2022-02-10 23:11:44,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:44,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 23:11:44,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 23:11:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3350, Unknown=1, NotChecked=116, Total=3660 [2022-02-10 23:11:44,271 INFO L87 Difference]: Start difference. First operand 6968 states and 20127 transitions. Second operand has 61 states, 61 states have (on average 5.147540983606557) internal successors, (314), 61 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 23:11:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:11:48,379 INFO L93 Difference]: Finished difference Result 19844 states and 54634 transitions. [2022-02-10 23:11:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 23:11:48,379 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.147540983606557) internal successors, (314), 61 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-02-10 23:11:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:11:48,411 INFO L225 Difference]: With dead ends: 19844 [2022-02-10 23:11:48,411 INFO L226 Difference]: Without dead ends: 19303 [2022-02-10 23:11:48,413 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 258 SyntacticMatches, 10 SemanticMatches, 122 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 3922 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1416, Invalid=13593, Unknown=1, NotChecked=242, Total=15252 [2022-02-10 23:11:48,413 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 1610 mSDsluCounter, 5856 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 688 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:48,413 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 5582 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2027 Invalid, 0 Unknown, 688 Unchecked, 0.8s Time] [2022-02-10 23:11:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19303 states. [2022-02-10 23:11:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19303 to 7219. [2022-02-10 23:11:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7219 states, 7218 states have (on average 2.8764200609587145) internal successors, (20762), 7218 states have internal predecessors, (20762), 0 states have call successors, (0), 0 states 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 23:11:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7219 states to 7219 states and 20762 transitions. [2022-02-10 23:11:48,573 INFO L78 Accepts]: Start accepts. Automaton has 7219 states and 20762 transitions. Word has length 143 [2022-02-10 23:11:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:11:48,573 INFO L470 AbstractCegarLoop]: Abstraction has 7219 states and 20762 transitions. [2022-02-10 23:11:48,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.147540983606557) internal successors, (314), 61 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 23:11:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 7219 states and 20762 transitions. [2022-02-10 23:11:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-02-10 23:11:48,581 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:11:48,582 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:48,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:48,782 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 23:11:48,782 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:11:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:11:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1054034610, now seen corresponding path program 37 times [2022-02-10 23:11:48,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:11:48,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691468077] [2022-02-10 23:11:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:11:48,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:11:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:49,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:11:49,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691468077] [2022-02-10 23:11:49,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691468077] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:11:49,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836866163] [2022-02-10 23:11:49,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:11:49,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:11:49,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:11:49,673 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 23:11:49,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 23:11:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:11:49,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 67 conjunts are in the unsatisfiable core [2022-02-10 23:11:49,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:11:49,809 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 23:11:50,005 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:11:50,005 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 23:11:51,118 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 23:11:51,308 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 23:11:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:11:51,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:11:51,466 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1281 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1281) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-02-10 23:11:51,549 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:11:51,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-02-10 23:11:51,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:11:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-02-10 23:11:53,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836866163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:11:53,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:11:53,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 89 [2022-02-10 23:11:53,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145344814] [2022-02-10 23:11:53,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:11:53,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-10 23:11:53,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:11:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-10 23:11:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=662, Invalid=6997, Unknown=1, NotChecked=172, Total=7832 [2022-02-10 23:11:53,415 INFO L87 Difference]: Start difference. First operand 7219 states and 20762 transitions. Second operand has 89 states, 89 states have (on average 4.123595505617978) internal successors, (367), 89 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 23:12:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:12:19,443 INFO L93 Difference]: Finished difference Result 70657 states and 195778 transitions. [2022-02-10 23:12:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-02-10 23:12:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.123595505617978) internal successors, (367), 89 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-02-10 23:12:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:12:19,587 INFO L225 Difference]: With dead ends: 70657 [2022-02-10 23:12:19,587 INFO L226 Difference]: Without dead ends: 66394 [2022-02-10 23:12:19,592 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 252 SyntacticMatches, 87 SemanticMatches, 327 ConstructedPredicates, 1 IntricatePredicates, 8 DeprecatedPredicates, 46692 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=10836, Invalid=96419, Unknown=5, NotChecked=652, Total=107912 [2022-02-10 23:12:19,592 INFO L934 BasicCegarLoop]: 553 mSDtfsCounter, 7354 mSDsluCounter, 28460 mSDsCounter, 0 mSdLazyCounter, 8068 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7354 SdHoareTripleChecker+Valid, 25586 SdHoareTripleChecker+Invalid, 16861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8179 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:12:19,592 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [7354 Valid, 25586 Invalid, 16861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8068 Invalid, 0 Unknown, 8179 Unchecked, 3.4s Time] [2022-02-10 23:12:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66394 states. [2022-02-10 23:12:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66394 to 15628. [2022-02-10 23:12:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15628 states, 15627 states have (on average 3.0433864465348437) internal successors, (47559), 15627 states have internal predecessors, (47559), 0 states have call successors, (0), 0 states 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 23:12:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15628 states to 15628 states and 47559 transitions. [2022-02-10 23:12:20,294 INFO L78 Accepts]: Start accepts. Automaton has 15628 states and 47559 transitions. Word has length 143 [2022-02-10 23:12:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:12:20,294 INFO L470 AbstractCegarLoop]: Abstraction has 15628 states and 47559 transitions. [2022-02-10 23:12:20,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.123595505617978) internal successors, (367), 89 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 23:12:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 15628 states and 47559 transitions. [2022-02-10 23:12:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-10 23:12:20,316 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:12:20,316 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:20,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-10 23:12:20,516 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 23:12:20,516 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:12:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:12:20,517 INFO L85 PathProgramCache]: Analyzing trace with hash -64123904, now seen corresponding path program 38 times [2022-02-10 23:12:20,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:12:20,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104647665] [2022-02-10 23:12:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:12:20,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:12:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:12:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:21,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:12:21,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104647665] [2022-02-10 23:12:21,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104647665] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:12:21,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623721014] [2022-02-10 23:12:21,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:12:21,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:12:21,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:12:21,579 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 23:12:21,579 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 23:12:21,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:12:21,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:12:21,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 73 conjunts are in the unsatisfiable core [2022-02-10 23:12:21,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:12:21,730 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 23:12:21,929 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:12:21,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-10 23:12:23,229 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 23:12:23,520 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 23:12:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:23,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:12:23,928 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:12:23,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 44 treesize of output 44 [2022-02-10 23:12:23,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:12:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:12:26,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623721014] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:12:26,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:12:26,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 92 [2022-02-10 23:12:26,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545364130] [2022-02-10 23:12:26,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:12:26,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-10 23:12:26,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:12:26,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-10 23:12:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=7698, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 23:12:26,374 INFO L87 Difference]: Start difference. First operand 15628 states and 47559 transitions. Second operand has 92 states, 92 states have (on average 4.086956521739131) internal successors, (376), 92 states have internal predecessors, (376), 0 states have call successors, (0), 0 states 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 23:13:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:13:46,246 INFO L93 Difference]: Finished difference Result 108964 states and 294379 transitions. [2022-02-10 23:13:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 536 states. [2022-02-10 23:13:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 4.086956521739131) internal successors, (376), 92 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-02-10 23:13:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:13:46,540 INFO L225 Difference]: With dead ends: 108964 [2022-02-10 23:13:46,540 INFO L226 Difference]: Without dead ends: 80283 [2022-02-10 23:13:46,559 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 282 SyntacticMatches, 128 SemanticMatches, 618 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180556 ImplicationChecksByTransitivity, 71.5s TimeCoverageRelationStatistics Valid=33504, Invalid=350276, Unknown=0, NotChecked=0, Total=383780 [2022-02-10 23:13:46,560 INFO L934 BasicCegarLoop]: 999 mSDtfsCounter, 10685 mSDsluCounter, 55577 mSDsCounter, 0 mSdLazyCounter, 14120 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10685 SdHoareTripleChecker+Valid, 51496 SdHoareTripleChecker+Invalid, 17534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 14120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2312 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:13:46,560 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [10685 Valid, 51496 Invalid, 17534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1102 Valid, 14120 Invalid, 0 Unknown, 2312 Unchecked, 7.4s Time] [2022-02-10 23:13:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80283 states. [2022-02-10 23:13:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80283 to 16430. [2022-02-10 23:13:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16430 states, 16429 states have (on average 3.0306165926106274) internal successors, (49790), 16429 states have internal predecessors, (49790), 0 states have call successors, (0), 0 states 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 23:13:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16430 states to 16430 states and 49790 transitions. [2022-02-10 23:13:47,505 INFO L78 Accepts]: Start accepts. Automaton has 16430 states and 49790 transitions. Word has length 146 [2022-02-10 23:13:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:13:47,506 INFO L470 AbstractCegarLoop]: Abstraction has 16430 states and 49790 transitions. [2022-02-10 23:13:47,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 4.086956521739131) internal successors, (376), 92 states have internal predecessors, (376), 0 states have call successors, (0), 0 states 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 23:13:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 16430 states and 49790 transitions. [2022-02-10 23:13:47,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-10 23:13:47,520 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:13:47,520 INFO L515 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:47,537 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 23:13:47,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-10 23:13:47,721 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:13:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:13:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1262487403, now seen corresponding path program 39 times [2022-02-10 23:13:47,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:13:47,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842086991] [2022-02-10 23:13:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:13:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:13:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:13:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 52 proven. 79 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-02-10 23:13:47,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:13:47,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842086991] [2022-02-10 23:13:47,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842086991] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:13:47,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304789646] [2022-02-10 23:13:47,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:13:47,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:13:47,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:13:47,854 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 23:13:47,855 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 23:13:48,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:13:48,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:13:48,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-10 23:13:48,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:13:48,734 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-02-10 23:13:48,734 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 35 treesize of output 13 [2022-02-10 23:13:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 51 proven. 53 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-02-10 23:13:48,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:13:49,050 INFO L353 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-02-10 23:13:49,050 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 37 treesize of output 28 [2022-02-10 23:13:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 103 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-02-10 23:13:49,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304789646] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:13:49,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:13:49,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 49 [2022-02-10 23:13:49,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649664360] [2022-02-10 23:13:49,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:13:49,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 23:13:49,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:13:49,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 23:13:49,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2019, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 23:13:49,461 INFO L87 Difference]: Start difference. First operand 16430 states and 49790 transitions. Second operand has 49 states, 49 states have (on average 5.428571428571429) internal successors, (266), 49 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 23:13:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:13:50,680 INFO L93 Difference]: Finished difference Result 19254 states and 56903 transitions. [2022-02-10 23:13:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 23:13:50,680 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.428571428571429) internal successors, (266), 49 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 151 [2022-02-10 23:13:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:13:50,715 INFO L225 Difference]: With dead ends: 19254 [2022-02-10 23:13:50,715 INFO L226 Difference]: Without dead ends: 18089 [2022-02-10 23:13:50,717 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1432, Invalid=7124, Unknown=0, NotChecked=0, Total=8556 [2022-02-10 23:13:50,717 INFO L934 BasicCegarLoop]: 209 mSDtfsCounter, 979 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:13:50,717 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3445 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 555 Invalid, 0 Unknown, 463 Unchecked, 0.2s Time] [2022-02-10 23:13:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18089 states. [2022-02-10 23:13:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18089 to 16097. [2022-02-10 23:13:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16097 states, 16096 states have (on average 3.0431163021868786) internal successors, (48982), 16096 states have internal predecessors, (48982), 0 states have call successors, (0), 0 states 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 23:13:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16097 states to 16097 states and 48982 transitions. [2022-02-10 23:13:50,976 INFO L78 Accepts]: Start accepts. Automaton has 16097 states and 48982 transitions. Word has length 151 [2022-02-10 23:13:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:13:50,976 INFO L470 AbstractCegarLoop]: Abstraction has 16097 states and 48982 transitions. [2022-02-10 23:13:50,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.428571428571429) internal successors, (266), 49 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 23:13:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 16097 states and 48982 transitions. [2022-02-10 23:13:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-02-10 23:13:51,059 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:13:51,059 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:51,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 23:13:51,259 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 23:13:51,260 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:13:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:13:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash 149553678, now seen corresponding path program 40 times [2022-02-10 23:13:51,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:13:51,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699599676] [2022-02-10 23:13:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:13:51,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:13:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:13:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:13:52,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:13:52,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699599676] [2022-02-10 23:13:52,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699599676] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:13:52,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793573553] [2022-02-10 23:13:52,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:13:52,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:13:52,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:13:52,330 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 23:13:52,331 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 23:13:52,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:13:52,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:13:52,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-10 23:13:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:13:52,468 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 23:13:52,646 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:13:52,646 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 23:13:53,829 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 23:13:54,130 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 23 treesize of output 7 [2022-02-10 23:13:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:13:54,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:13:54,380 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1401 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1401) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-02-10 23:13:54,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:13:54,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-02-10 23:13:54,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-02-10 23:13:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-02-10 23:13:56,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793573553] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:13:56,646 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:13:56,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 98 [2022-02-10 23:13:56,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077062634] [2022-02-10 23:13:56,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:13:56,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-10 23:13:56,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:13:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-10 23:13:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=8551, Unknown=1, NotChecked=190, Total=9506 [2022-02-10 23:13:56,648 INFO L87 Difference]: Start difference. First operand 16097 states and 48982 transitions. Second operand has 98 states, 98 states have (on average 3.9591836734693877) internal successors, (388), 98 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 23:17:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:17:48,547 INFO L93 Difference]: Finished difference Result 132932 states and 354073 transitions. [2022-02-10 23:17:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 947 states. [2022-02-10 23:17:48,548 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.9591836734693877) internal successors, (388), 98 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-02-10 23:17:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:17:48,860 INFO L225 Difference]: With dead ends: 132932 [2022-02-10 23:17:48,861 INFO L226 Difference]: Without dead ends: 102386 [2022-02-10 23:17:48,922 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 1706 GetRequests, 277 SyntacticMatches, 395 SemanticMatches, 1034 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 547126 ImplicationChecksByTransitivity, 199.5s TimeCoverageRelationStatistics Valid=107987, Invalid=962199, Unknown=8, NotChecked=2066, Total=1072260 [2022-02-10 23:17:48,922 INFO L934 BasicCegarLoop]: 3137 mSDtfsCounter, 10764 mSDsluCounter, 150773 mSDsCounter, 0 mSdLazyCounter, 39105 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10764 SdHoareTripleChecker+Valid, 139670 SdHoareTripleChecker+Invalid, 48600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 39105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8540 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:17:48,923 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [10764 Valid, 139670 Invalid, 48600 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [955 Valid, 39105 Invalid, 0 Unknown, 8540 Unchecked, 17.8s Time] [2022-02-10 23:17:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102386 states. [2022-02-10 23:17:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102386 to 23567. [2022-02-10 23:17:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23567 states, 23566 states have (on average 3.1145294067724687) internal successors, (73397), 23566 states have internal predecessors, (73397), 0 states have call successors, (0), 0 states 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 23:17:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23567 states to 23567 states and 73397 transitions. [2022-02-10 23:17:49,911 INFO L78 Accepts]: Start accepts. Automaton has 23567 states and 73397 transitions. Word has length 152 [2022-02-10 23:17:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:17:49,911 INFO L470 AbstractCegarLoop]: Abstraction has 23567 states and 73397 transitions. [2022-02-10 23:17:49,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.9591836734693877) internal successors, (388), 98 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 23:17:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 23567 states and 73397 transitions. [2022-02-10 23:17:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-02-10 23:17:50,148 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:17:50,148 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:50,185 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 23:17:50,348 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 23:17:50,349 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:17:50,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:17:50,349 INFO L85 PathProgramCache]: Analyzing trace with hash -155623454, now seen corresponding path program 41 times [2022-02-10 23:17:50,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:17:50,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856474638] [2022-02-10 23:17:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:17:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:17:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:17:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:17:51,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:17:51,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856474638] [2022-02-10 23:17:51,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856474638] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:17:51,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127190228] [2022-02-10 23:17:51,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:17:51,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:17:51,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:17:51,149 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 23:17:51,149 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 23:17:51,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 23:17:51,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:17:51,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 80 conjunts are in the unsatisfiable core [2022-02-10 23:17:51,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:17:51,334 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 23:17:51,364 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-10 23:17:51,365 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 23:17:51,682 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-10 23:17:51,683 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 23:17:52,368 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 23:17:52,671 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 23:17:52,927 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 23:17:53,342 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 23:17:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:17:53,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:17:55,003 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 23:17:55,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-02-10 23:17:55,011 INFO L353 Elim1Store]: treesize reduction 11, result has 38.9 percent of original size [2022-02-10 23:17:55,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 148 treesize of output 137 [2022-02-10 23:17:55,017 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-02-10 23:17:55,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 102 [2022-02-10 23:17:55,025 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-02-10 23:17:55,026 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 81 treesize of output 67 [2022-02-10 23:17:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:17:56,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127190228] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:17:56,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:17:56,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 38, 36] total 98 [2022-02-10 23:17:56,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440414729] [2022-02-10 23:17:56,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:17:56,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-10 23:17:56,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:17:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-10 23:17:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1164, Invalid=8262, Unknown=80, NotChecked=0, Total=9506 [2022-02-10 23:17:56,346 INFO L87 Difference]: Start difference. First operand 23567 states and 73397 transitions. Second operand has 98 states, 98 states have (on average 3.9489795918367347) internal successors, (387), 98 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:18:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:18:25,247 INFO L93 Difference]: Finished difference Result 79179 states and 223423 transitions. [2022-02-10 23:18:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-02-10 23:18:25,247 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.9489795918367347) internal successors, (387), 98 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-02-10 23:18:25,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:18:25,435 INFO L225 Difference]: With dead ends: 79179 [2022-02-10 23:18:25,436 INFO L226 Difference]: Without dead ends: 70885 [2022-02-10 23:18:25,440 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 257 SyntacticMatches, 7 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34778 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=13869, Invalid=90695, Unknown=88, NotChecked=0, Total=104652 [2022-02-10 23:18:25,441 INFO L934 BasicCegarLoop]: 333 mSDtfsCounter, 6112 mSDsluCounter, 18273 mSDsCounter, 0 mSdLazyCounter, 4520 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6112 SdHoareTripleChecker+Valid, 16356 SdHoareTripleChecker+Invalid, 10037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 4520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5150 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:18:25,441 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [6112 Valid, 16356 Invalid, 10037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 4520 Invalid, 0 Unknown, 5150 Unchecked, 2.2s Time] [2022-02-10 23:18:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70885 states. [2022-02-10 23:18:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70885 to 26343. [2022-02-10 23:18:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26343 states, 26342 states have (on average 3.0935388353200213) internal successors, (81490), 26342 states have internal predecessors, (81490), 0 states have call successors, (0), 0 states 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 23:18:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26343 states to 26343 states and 81490 transitions. [2022-02-10 23:18:26,335 INFO L78 Accepts]: Start accepts. Automaton has 26343 states and 81490 transitions. Word has length 152 [2022-02-10 23:18:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:18:26,335 INFO L470 AbstractCegarLoop]: Abstraction has 26343 states and 81490 transitions. [2022-02-10 23:18:26,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.9489795918367347) internal successors, (387), 98 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:18:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 26343 states and 81490 transitions. [2022-02-10 23:18:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-02-10 23:18:26,364 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:18:26,364 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:26,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 23:18:26,564 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 23:18:26,565 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:18:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:18:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1030084406, now seen corresponding path program 42 times [2022-02-10 23:18:26,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:18:26,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679012614] [2022-02-10 23:18:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:18:26,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:18:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:18:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:18:27,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:18:27,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679012614] [2022-02-10 23:18:27,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679012614] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:18:27,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086775117] [2022-02-10 23:18:27,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:18:27,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:18:27,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:18:27,519 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 23:18:27,520 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 23:18:28,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 23:18:28,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:18:28,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 23:18:28,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:18:28,569 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:18:28,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-02-10 23:18:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 36 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-02-10 23:18:28,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:18:28,881 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-02-10 23:18:28,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:18:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-10 23:18:29,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086775117] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:18:29,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:18:29,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13, 15] total 53 [2022-02-10 23:18:29,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361598531] [2022-02-10 23:18:29,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:18:29,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-10 23:18:29,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:18:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-10 23:18:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 23:18:29,417 INFO L87 Difference]: Start difference. First operand 26343 states and 81490 transitions. Second operand has 53 states, 53 states have (on average 6.0754716981132075) internal successors, (322), 53 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 23:18:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:18:40,189 INFO L93 Difference]: Finished difference Result 48890 states and 144091 transitions. [2022-02-10 23:18:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-10 23:18:40,197 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.0754716981132075) internal successors, (322), 53 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 152 [2022-02-10 23:18:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:18:40,328 INFO L225 Difference]: With dead ends: 48890 [2022-02-10 23:18:40,329 INFO L226 Difference]: Without dead ends: 48773 [2022-02-10 23:18:40,330 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 310 SyntacticMatches, 8 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2775, Invalid=15314, Unknown=1, NotChecked=0, Total=18090 [2022-02-10 23:18:40,330 INFO L934 BasicCegarLoop]: 256 mSDtfsCounter, 1958 mSDsluCounter, 6520 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 954 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:18:40,330 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1958 Valid, 6577 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1074 Invalid, 0 Unknown, 954 Unchecked, 0.5s Time] [2022-02-10 23:18:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48773 states. [2022-02-10 23:18:40,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48773 to 30511. [2022-02-10 23:18:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30511 states, 30510 states have (on average 3.096394624713209) internal successors, (94471), 30510 states have internal predecessors, (94471), 0 states have call successors, (0), 0 states 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 23:18:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30511 states to 30511 states and 94471 transitions. [2022-02-10 23:18:41,122 INFO L78 Accepts]: Start accepts. Automaton has 30511 states and 94471 transitions. Word has length 152 [2022-02-10 23:18:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:18:41,122 INFO L470 AbstractCegarLoop]: Abstraction has 30511 states and 94471 transitions. [2022-02-10 23:18:41,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.0754716981132075) internal successors, (322), 53 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 23:18:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 30511 states and 94471 transitions. [2022-02-10 23:18:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-02-10 23:18:41,160 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:18:41,160 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:41,180 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 23:18:41,361 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 23:18:41,361 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:18:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:18:41,361 INFO L85 PathProgramCache]: Analyzing trace with hash -789139220, now seen corresponding path program 43 times [2022-02-10 23:18:41,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:18:41,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440176987] [2022-02-10 23:18:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:18:41,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:18:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:18:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:18:42,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:18:42,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440176987] [2022-02-10 23:18:42,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440176987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:18:42,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222468379] [2022-02-10 23:18:42,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:18:42,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:18:42,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:18:42,115 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 23:18:42,116 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 23:18:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:18:42,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-10 23:18:42,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:18:43,965 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-10 23:18:43,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 23:18:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:18:43,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:18:44,155 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-02-10 23:18:44,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 17 [2022-02-10 23:18:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:18:46,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222468379] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:18:46,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:18:46,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 29] total 81 [2022-02-10 23:18:46,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903113831] [2022-02-10 23:18:46,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:18:46,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-10 23:18:46,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:18:46,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-10 23:18:46,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=5734, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 23:18:46,337 INFO L87 Difference]: Start difference. First operand 30511 states and 94471 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 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 23:18:54,593 WARN L244 SmtUtils]: Removed 8 from assertion stack [2022-02-10 23:18:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-10 23:18:54,596 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 254 SyntacticMatches, 9 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12145 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4895, Invalid=35305, Unknown=0, NotChecked=0, Total=40200 [2022-02-10 23:18:54,596 INFO L934 BasicCegarLoop]: 373 mSDtfsCounter, 1936 mSDsluCounter, 11524 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 11582 SdHoareTripleChecker+Invalid, 4185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 936 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:18:54,597 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 11582 Invalid, 4185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2965 Invalid, 0 Unknown, 936 Unchecked, 1.4s Time] [2022-02-10 23:18:54,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 23:18:54,617 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 23:18:54,634 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 23:18:54,634 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 23:18:54,798 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 23:18:54,799 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (30511states) and FLOYD_HOARE automaton (currently 128 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 20ms.. [2022-02-10 23:18:54,800 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 23:18:54,800 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 23:18:54,802 INFO L733 BasicCegarLoop]: Path program histogram: [43, 1, 1, 1, 1] [2022-02-10 23:18:54,804 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:18:54,804 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:18:54,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:18:54 BasicIcfg [2022-02-10 23:18:54,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:18:54,805 INFO L158 Benchmark]: Toolchain (without parser) took 751043.46ms. Allocated memory was 189.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 136.0MB in the beginning and 317.5MB in the end (delta: -181.6MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-02-10 23:18:54,805 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 152.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:18:54,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.95ms. Allocated memory is still 189.8MB. Free memory was 135.7MB in the beginning and 160.5MB in the end (delta: -24.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-10 23:18:54,805 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.98ms. Allocated memory is still 189.8MB. Free memory was 160.5MB in the beginning and 158.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 23:18:54,805 INFO L158 Benchmark]: Boogie Preprocessor took 21.47ms. Allocated memory is still 189.8MB. Free memory was 158.9MB in the beginning and 157.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:18:54,806 INFO L158 Benchmark]: RCFGBuilder took 377.55ms. Allocated memory is still 189.8MB. Free memory was 157.3MB in the beginning and 139.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-02-10 23:18:54,806 INFO L158 Benchmark]: TraceAbstraction took 750372.65ms. Allocated memory was 189.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 138.5MB in the beginning and 317.5MB in the end (delta: -179.1MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-02-10 23:18:54,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 152.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.95ms. Allocated memory is still 189.8MB. Free memory was 135.7MB in the beginning and 160.5MB in the end (delta: -24.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.98ms. Allocated memory is still 189.8MB. Free memory was 160.5MB in the beginning and 158.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.47ms. Allocated memory is still 189.8MB. Free memory was 158.9MB in the beginning and 157.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 377.55ms. Allocated memory is still 189.8MB. Free memory was 157.3MB in the beginning and 139.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 750372.65ms. Allocated memory was 189.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 138.5MB in the beginning and 317.5MB in the end (delta: -179.1MB). Peak memory consumption was 1.0GB. 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: 86]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (30511states) and FLOYD_HOARE automaton (currently 128 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 20ms.. - TimeoutResultAtElement [Line: 81]: 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 (30511states) and FLOYD_HOARE automaton (currently 128 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 20ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (30511states) and FLOYD_HOARE automaton (currently 128 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 20ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 128 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 750.3s, OverallIterations: 47, TraceHistogramMax: 6, PathProgramHistogramMax: 43, EmptinessCheckTime: 0.7s, AutomataDifference: 597.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 122223 SdHoareTripleChecker+Valid, 67.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122223 mSDsluCounter, 527596 SdHoareTripleChecker+Invalid, 56.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53291 IncrementalHoareTripleChecker+Unchecked, 560827 mSDsCounter, 9988 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149490 IncrementalHoareTripleChecker+Invalid, 212769 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9988 mSolverCounterUnsat, 15095 mSDtfsCounter, 149490 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18316 GetRequests, 10039 SyntacticMatches, 788 SemanticMatches, 7488 ConstructedPredicates, 15 IntricatePredicates, 49 DeprecatedPredicates, 1101279 ImplicationChecksByTransitivity, 547.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30511occurred in iteration=46, InterpolantAutomatonStates: 5239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.6s AutomataMinimizationTime, 46 MinimizatonAttempts, 608545 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 123.7s InterpolantComputationTime, 11473 NumberOfCodeBlocks, 11305 NumberOfCodeBlocksAsserted, 170 NumberOfCheckSat, 16899 ConstructedInterpolants, 973 QuantifiedInterpolants, 225360 SizeOfPredicates, 1033 NumberOfNonLiveVariables, 13108 ConjunctsInSsa, 1810 ConjunctsInUnsatCore, 133 InterpolantComputations, 4 PerfectInterpolantSequences, 1753/8745 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