/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-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 02:24:26,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 02:24:26,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 02:24:26,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 02:24:26,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 02:24:26,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 02:24:26,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 02:24:26,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 02:24:26,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 02:24:26,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 02:24:26,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 02:24:26,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 02:24:26,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 02:24:26,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 02:24:26,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 02:24:26,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 02:24:26,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 02:24:26,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 02:24:26,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 02:24:26,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 02:24:26,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 02:24:26,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 02:24:26,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 02:24:26,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 02:24:26,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 02:24:26,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 02:24:26,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 02:24:26,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 02:24:26,136 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 02:24:26,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 02:24:26,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 02:24:26,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 02:24:26,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 02:24:26,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 02:24:26,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 02:24:26,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 02:24:26,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 02:24:26,168 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 02:24:26,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 02:24:26,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 02:24:26,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 02:24:26,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 02:24:26,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 02:24:26,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 02:24:26,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 02:24:26,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 02:24:26,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 02:24:26,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:24:26,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 02:24:26,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 02:24:26,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 02:24:26,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 02:24:26,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 02:24:26,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 02:24:26,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 02:24:26,171 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 02:24:26,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 02:24:26,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 02:24:26,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 02:24:26,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 02:24:26,410 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 02:24:26,411 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 02:24:26,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-10 02:24:26,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a90423a/e44fa6fa547d4656a171f7bb55e9e1ca/FLAGad18c5d96 [2022-02-10 02:24:26,844 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 02:24:26,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-10 02:24:26,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a90423a/e44fa6fa547d4656a171f7bb55e9e1ca/FLAGad18c5d96 [2022-02-10 02:24:26,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a90423a/e44fa6fa547d4656a171f7bb55e9e1ca [2022-02-10 02:24:26,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 02:24:26,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 02:24:26,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 02:24:26,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 02:24:26,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 02:24:26,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:24:26" (1/1) ... [2022-02-10 02:24:26,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b2f91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:26, skipping insertion in model container [2022-02-10 02:24:26,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 02:24:26" (1/1) ... [2022-02-10 02:24:26,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 02:24:26,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 02:24:27,061 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-nonblocking-cntr.wvr.c[2037,2050] [2022-02-10 02:24:27,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 02:24:27,068 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 02:24:27,083 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-nonblocking-cntr.wvr.c[2037,2050] [2022-02-10 02:24:27,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 02:24:27,096 INFO L208 MainTranslator]: Completed translation [2022-02-10 02:24:27,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27 WrapperNode [2022-02-10 02:24:27,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 02:24:27,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 02:24:27,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 02:24:27,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 02:24:27,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,134 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-02-10 02:24:27,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 02:24:27,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 02:24:27,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 02:24:27,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 02:24:27,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 02:24:27,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 02:24:27,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 02:24:27,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 02:24:27,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (1/1) ... [2022-02-10 02:24:27,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:24:27,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:27,221 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 02:24:27,234 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 02:24:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 02:24:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 02:24:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 02:24:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 02:24:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 02:24:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 02:24:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 02:24:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 02:24:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 02:24:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 02:24:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 02:24:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 02:24:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 02:24:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 02:24:27,268 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 02:24:27,346 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 02:24:27,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 02:24:27,515 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 02:24:27,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 02:24:27,555 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 02:24:27,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:24:27 BoogieIcfgContainer [2022-02-10 02:24:27,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 02:24:27,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 02:24:27,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 02:24:27,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 02:24:27,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 02:24:26" (1/3) ... [2022-02-10 02:24:27,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2b29cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:24:27, skipping insertion in model container [2022-02-10 02:24:27,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 02:24:27" (2/3) ... [2022-02-10 02:24:27,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2b29cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:24:27, skipping insertion in model container [2022-02-10 02:24:27,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:24:27" (3/3) ... [2022-02-10 02:24:27,565 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-02-10 02:24:27,569 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 02:24:27,569 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 02:24:27,569 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 02:24:27,570 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 02:24:27,598 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,598 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,599 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,599 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,599 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,600 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,601 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,602 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,602 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,602 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,603 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,603 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,603 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,603 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,604 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,604 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,604 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,605 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,606 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,607 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,608 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,608 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,608 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,608 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,613 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,613 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:24:27,618 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 02:24:27,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 02:24:27,667 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 02:24:27,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 02:24:27,684 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 82 transitions, 180 flow [2022-02-10 02:24:27,753 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:33,912 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 294626 transitions and produced 120299 states. [2022-02-10 02:24:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 120299 states, 92611 states have (on average 1.4667588083489003) internal successors, (135838), 120298 states have internal predecessors, (135838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-10 02:24:35,889 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:35,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:35,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1948896423, now seen corresponding path program 1 times [2022-02-10 02:24:35,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:35,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575132982] [2022-02-10 02:24:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:35,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:36,373 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 02:24:36,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:36,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575132982] [2022-02-10 02:24:36,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575132982] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:24:36,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:24:36,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 02:24:36,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220207488] [2022-02-10 02:24:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:24:36,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 02:24:36,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 02:24:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 02:24:37,296 INFO L87 Difference]: Start difference. First operand has 120299 states, 92611 states have (on average 1.4667588083489003) internal successors, (135838), 120298 states have internal predecessors, (135838), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:38,204 INFO L93 Difference]: Finished difference Result 33620 states and 39722 transitions. [2022-02-10 02:24:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 02:24:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-02-10 02:24:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:38,246 INFO L225 Difference]: With dead ends: 33620 [2022-02-10 02:24:38,246 INFO L226 Difference]: Without dead ends: 5567 [2022-02-10 02:24:38,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 02:24:38,251 INFO L933 BasicCegarLoop]: 61 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, 61 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 02:24:38,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:24:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2022-02-10 02:24:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 88. [2022-02-10 02:24:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 87 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2022-02-10 02:24:38,541 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 58 [2022-02-10 02:24:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:38,542 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2022-02-10 02:24:38,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2022-02-10 02:24:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-10 02:24:38,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:38,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:38,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 02:24:38,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:38,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1682990935, now seen corresponding path program 1 times [2022-02-10 02:24:38,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:38,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186276821] [2022-02-10 02:24:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:38,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:38,711 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 02:24:38,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:38,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186276821] [2022-02-10 02:24:38,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186276821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:24:38,711 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:24:38,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 02:24:38,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931947754] [2022-02-10 02:24:38,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:24:38,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:24:38,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:24:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:24:38,714 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:38,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:38,769 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2022-02-10 02:24:38,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:24:38,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-02-10 02:24:38,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:38,770 INFO L225 Difference]: With dead ends: 106 [2022-02-10 02:24:38,770 INFO L226 Difference]: Without dead ends: 106 [2022-02-10 02:24:38,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:24:38,772 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 94 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:38,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 136 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:24:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-10 02:24:38,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2022-02-10 02:24:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 91 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2022-02-10 02:24:38,777 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 58 [2022-02-10 02:24:38,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:38,777 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2022-02-10 02:24:38,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:38,777 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2022-02-10 02:24:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 02:24:38,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:38,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:38,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 02:24:38,779 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:38,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:38,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1484398121, now seen corresponding path program 1 times [2022-02-10 02:24:38,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:38,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916220328] [2022-02-10 02:24:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:38,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:38,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:38,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916220328] [2022-02-10 02:24:38,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916220328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:38,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364282478] [2022-02-10 02:24:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:38,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:38,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:38,859 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 02:24:38,906 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 02:24:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:38,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 02:24:38,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:39,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:39,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364282478] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:39,262 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:39,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-02-10 02:24:39,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006122023] [2022-02-10 02:24:39,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:39,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:24:39,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:24:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:24:39,265 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:39,397 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2022-02-10 02:24:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:24:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-10 02:24:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:39,399 INFO L225 Difference]: With dead ends: 118 [2022-02-10 02:24:39,399 INFO L226 Difference]: Without dead ends: 118 [2022-02-10 02:24:39,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:24:39,400 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 80 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:39,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 301 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:24:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-10 02:24:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2022-02-10 02:24:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 93 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2022-02-10 02:24:39,412 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 63 [2022-02-10 02:24:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:39,413 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2022-02-10 02:24:39,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2022-02-10 02:24:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 02:24:39,414 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:39,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:39,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 02:24:39,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:39,628 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash 911952809, now seen corresponding path program 2 times [2022-02-10 02:24:39,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:39,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025318915] [2022-02-10 02:24:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:39,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:39,719 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 02:24:39,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:39,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025318915] [2022-02-10 02:24:39,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025318915] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:24:39,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:24:39,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:24:39,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334243419] [2022-02-10 02:24:39,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:24:39,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:24:39,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:39,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:24:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:24:39,722 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:39,764 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2022-02-10 02:24:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:24:39,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-10 02:24:39,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:39,765 INFO L225 Difference]: With dead ends: 115 [2022-02-10 02:24:39,765 INFO L226 Difference]: Without dead ends: 114 [2022-02-10 02:24:39,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:24:39,768 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:39,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 210 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:24:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-10 02:24:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2022-02-10 02:24:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 94 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2022-02-10 02:24:39,775 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 63 [2022-02-10 02:24:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:39,775 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2022-02-10 02:24:39,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2022-02-10 02:24:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 02:24:39,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:39,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:39,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 02:24:39,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1415826055, now seen corresponding path program 1 times [2022-02-10 02:24:39,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:39,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778941731] [2022-02-10 02:24:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:39,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:39,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:39,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778941731] [2022-02-10 02:24:39,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778941731] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:39,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329104616] [2022-02-10 02:24:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:39,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:39,936 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 02:24:39,945 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 02:24:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:40,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:24:40,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:40,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:40,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329104616] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:40,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:40,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2022-02-10 02:24:40,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934408323] [2022-02-10 02:24:40,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:40,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:24:40,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:24:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:24:40,681 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:40,745 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2022-02-10 02:24:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:24:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-02-10 02:24:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:40,746 INFO L225 Difference]: With dead ends: 172 [2022-02-10 02:24:40,746 INFO L226 Difference]: Without dead ends: 147 [2022-02-10 02:24:40,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:24:40,747 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 100 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:40,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 306 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:24:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-02-10 02:24:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2022-02-10 02:24:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.228813559322034) internal successors, (145), 118 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2022-02-10 02:24:40,760 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 65 [2022-02-10 02:24:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:40,760 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2022-02-10 02:24:40,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2022-02-10 02:24:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 02:24:40,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:40,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:40,787 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 02:24:40,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:40,971 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:40,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash 477989245, now seen corresponding path program 2 times [2022-02-10 02:24:40,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:40,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284811857] [2022-02-10 02:24:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:40,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:41,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:41,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284811857] [2022-02-10 02:24:41,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284811857] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:41,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656399876] [2022-02-10 02:24:41,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:24:41,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:41,080 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 02:24:41,089 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 02:24:41,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:24:41,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:41,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:24:41,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:41,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:41,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656399876] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:41,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:41,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2022-02-10 02:24:41,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404509879] [2022-02-10 02:24:41,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:41,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:24:41,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:24:41,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:24:41,579 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:41,816 INFO L93 Difference]: Finished difference Result 190 states and 235 transitions. [2022-02-10 02:24:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:24:41,817 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-02-10 02:24:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:41,818 INFO L225 Difference]: With dead ends: 190 [2022-02-10 02:24:41,818 INFO L226 Difference]: Without dead ends: 184 [2022-02-10 02:24:41,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:24:41,818 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 37 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:41,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 674 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:24:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-10 02:24:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 136. [2022-02-10 02:24:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2592592592592593) internal successors, (170), 135 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2022-02-10 02:24:41,823 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 65 [2022-02-10 02:24:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:41,823 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2022-02-10 02:24:41,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2022-02-10 02:24:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 02:24:41,824 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:41,824 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:24:41,849 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 02:24:42,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:42,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1832916231, now seen corresponding path program 3 times [2022-02-10 02:24:42,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:42,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469521970] [2022-02-10 02:24:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:42,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:42,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:42,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469521970] [2022-02-10 02:24:42,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469521970] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:42,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660529864] [2022-02-10 02:24:42,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:24:42,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:42,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:42,165 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 02:24:42,166 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 02:24:42,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:24:42,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:42,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:24:42,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:42,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:42,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660529864] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:42,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:42,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2022-02-10 02:24:42,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472253011] [2022-02-10 02:24:42,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:42,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:24:42,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:24:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:24:42,623 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:43,420 INFO L93 Difference]: Finished difference Result 279 states and 355 transitions. [2022-02-10 02:24:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:24:43,421 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-10 02:24:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:43,422 INFO L225 Difference]: With dead ends: 279 [2022-02-10 02:24:43,422 INFO L226 Difference]: Without dead ends: 276 [2022-02-10 02:24:43,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=516, Invalid=2240, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:24:43,424 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 227 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:43,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 882 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:24:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-02-10 02:24:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 149. [2022-02-10 02:24:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.2635135135135136) internal successors, (187), 148 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 187 transitions. [2022-02-10 02:24:43,429 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 187 transitions. Word has length 70 [2022-02-10 02:24:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:43,429 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 187 transitions. [2022-02-10 02:24:43,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 187 transitions. [2022-02-10 02:24:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 02:24:43,430 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:43,430 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:24:43,459 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 02:24:43,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:43,655 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash -316541945, now seen corresponding path program 4 times [2022-02-10 02:24:43,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:43,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302984487] [2022-02-10 02:24:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:43,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:43,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:43,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302984487] [2022-02-10 02:24:43,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302984487] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:43,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402199250] [2022-02-10 02:24:43,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:24:43,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:43,741 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 02:24:43,767 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 02:24:43,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:24:43,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:43,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:24:43,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:44,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:44,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402199250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:44,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:44,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-10 02:24:44,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855465714] [2022-02-10 02:24:44,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:44,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:24:44,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:24:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:24:44,292 INFO L87 Difference]: Start difference. First operand 149 states and 187 transitions. Second operand has 22 states, 22 states have (on average 6.681818181818182) internal successors, (147), 22 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:44,809 INFO L93 Difference]: Finished difference Result 325 states and 405 transitions. [2022-02-10 02:24:44,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 02:24:44,810 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.681818181818182) internal successors, (147), 22 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-10 02:24:44,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:44,811 INFO L225 Difference]: With dead ends: 325 [2022-02-10 02:24:44,811 INFO L226 Difference]: Without dead ends: 324 [2022-02-10 02:24:44,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=541, Invalid=1811, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 02:24:44,812 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 393 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:44,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 625 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:24:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-02-10 02:24:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 185. [2022-02-10 02:24:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.3206521739130435) internal successors, (243), 184 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 243 transitions. [2022-02-10 02:24:44,818 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 243 transitions. Word has length 70 [2022-02-10 02:24:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:44,818 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 243 transitions. [2022-02-10 02:24:44,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.681818181818182) internal successors, (147), 22 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 243 transitions. [2022-02-10 02:24:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 02:24:44,819 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:44,819 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:24:44,845 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 02:24:45,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:45,042 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash -154375133, now seen corresponding path program 5 times [2022-02-10 02:24:45,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:45,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245959349] [2022-02-10 02:24:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:45,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:45,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:45,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245959349] [2022-02-10 02:24:45,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245959349] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:45,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907869418] [2022-02-10 02:24:45,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:24:45,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:45,130 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 02:24:45,159 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 02:24:45,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:24:45,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:45,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:24:45,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:45,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:45,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907869418] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:45,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:45,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-10 02:24:45,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175945754] [2022-02-10 02:24:45,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:45,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:24:45,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:24:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:24:45,683 INFO L87 Difference]: Start difference. First operand 185 states and 243 transitions. Second operand has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 23 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:46,247 INFO L93 Difference]: Finished difference Result 304 states and 395 transitions. [2022-02-10 02:24:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 02:24:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 23 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-10 02:24:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:46,248 INFO L225 Difference]: With dead ends: 304 [2022-02-10 02:24:46,248 INFO L226 Difference]: Without dead ends: 301 [2022-02-10 02:24:46,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=1922, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:24:46,249 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 164 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:46,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 559 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:24:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-02-10 02:24:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 187. [2022-02-10 02:24:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3279569892473118) internal successors, (247), 186 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 247 transitions. [2022-02-10 02:24:46,254 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 247 transitions. Word has length 70 [2022-02-10 02:24:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:46,255 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 247 transitions. [2022-02-10 02:24:46,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 23 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 247 transitions. [2022-02-10 02:24:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 02:24:46,256 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:46,256 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:24:46,282 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 02:24:46,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:46,476 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1882808579, now seen corresponding path program 6 times [2022-02-10 02:24:46,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:46,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254144775] [2022-02-10 02:24:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:46,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:46,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:46,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254144775] [2022-02-10 02:24:46,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254144775] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:46,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694109198] [2022-02-10 02:24:46,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:24:46,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:46,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:46,577 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 02:24:46,582 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 02:24:46,633 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 02:24:46,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:46,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:24:46,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:46,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:47,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694109198] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:47,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:47,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 02:24:47,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463291618] [2022-02-10 02:24:47,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:47,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 02:24:47,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:47,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 02:24:47,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:24:47,181 INFO L87 Difference]: Start difference. First operand 187 states and 247 transitions. Second operand has 24 states, 24 states have (on average 6.5) internal successors, (156), 24 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:47,875 INFO L93 Difference]: Finished difference Result 374 states and 471 transitions. [2022-02-10 02:24:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:24:47,875 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.5) internal successors, (156), 24 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-02-10 02:24:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:47,877 INFO L225 Difference]: With dead ends: 374 [2022-02-10 02:24:47,877 INFO L226 Difference]: Without dead ends: 368 [2022-02-10 02:24:47,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:24:47,879 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 160 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:47,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1294 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:24:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-02-10 02:24:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 206. [2022-02-10 02:24:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3414634146341464) internal successors, (275), 205 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2022-02-10 02:24:47,885 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 70 [2022-02-10 02:24:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:47,886 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2022-02-10 02:24:47,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.5) internal successors, (156), 24 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2022-02-10 02:24:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 02:24:47,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:47,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:47,914 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 02:24:48,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:48,088 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1334280677, now seen corresponding path program 7 times [2022-02-10 02:24:48,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:48,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961108126] [2022-02-10 02:24:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:48,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:48,191 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 02:24:48,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:48,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961108126] [2022-02-10 02:24:48,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961108126] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:48,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497603010] [2022-02-10 02:24:48,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:24:48,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:48,193 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 02:24:48,199 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 02:24:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:48,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:24:48,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:48,415 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 02:24:48,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:48,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497603010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:48,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:48,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 11 [2022-02-10 02:24:48,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648566102] [2022-02-10 02:24:48,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:48,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:24:48,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:24:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:24:48,922 INFO L87 Difference]: Start difference. First operand 206 states and 275 transitions. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:49,000 INFO L93 Difference]: Finished difference Result 370 states and 489 transitions. [2022-02-10 02:24:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:24:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 02:24:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:49,002 INFO L225 Difference]: With dead ends: 370 [2022-02-10 02:24:49,002 INFO L226 Difference]: Without dead ends: 339 [2022-02-10 02:24:49,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:24:49,002 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 116 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:49,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 592 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:24:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-02-10 02:24:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 272. [2022-02-10 02:24:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.3690036900369005) internal successors, (371), 271 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 371 transitions. [2022-02-10 02:24:49,008 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 371 transitions. Word has length 72 [2022-02-10 02:24:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:49,008 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 371 transitions. [2022-02-10 02:24:49,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 371 transitions. [2022-02-10 02:24:49,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 02:24:49,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:49,010 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:24:49,035 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 02:24:49,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-10 02:24:49,231 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1732162273, now seen corresponding path program 8 times [2022-02-10 02:24:49,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:49,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408278507] [2022-02-10 02:24:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:49,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:49,354 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 02:24:49,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:49,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408278507] [2022-02-10 02:24:49,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408278507] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:49,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205943354] [2022-02-10 02:24:49,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:24:49,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:49,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:49,356 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 02:24:49,357 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 02:24:49,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:24:49,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:49,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:24:49,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:49,664 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 02:24:49,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:50,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205943354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:50,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:50,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 02:24:50,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176809619] [2022-02-10 02:24:50,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:50,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 02:24:50,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 02:24:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:24:50,134 INFO L87 Difference]: Start difference. First operand 272 states and 371 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:51,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:51,223 INFO L93 Difference]: Finished difference Result 460 states and 618 transitions. [2022-02-10 02:24:51,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 02:24:51,223 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-10 02:24:51,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:51,225 INFO L225 Difference]: With dead ends: 460 [2022-02-10 02:24:51,225 INFO L226 Difference]: Without dead ends: 451 [2022-02-10 02:24:51,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=746, Invalid=4084, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:24:51,227 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 130 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:51,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1000 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:24:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-02-10 02:24:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 297. [2022-02-10 02:24:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.3885135135135136) internal successors, (411), 296 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 411 transitions. [2022-02-10 02:24:51,235 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 411 transitions. Word has length 72 [2022-02-10 02:24:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:51,235 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 411 transitions. [2022-02-10 02:24:51,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 411 transitions. [2022-02-10 02:24:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 02:24:51,236 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:51,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:24:51,255 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 02:24:51,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:51,447 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:51,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash -826644635, now seen corresponding path program 9 times [2022-02-10 02:24:51,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:51,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001491036] [2022-02-10 02:24:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:51,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:51,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:51,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001491036] [2022-02-10 02:24:51,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001491036] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:51,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228884024] [2022-02-10 02:24:51,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:24:51,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:51,617 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 02:24:51,619 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 02:24:51,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:24:51,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:51,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:24:51,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:51,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:52,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228884024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:52,230 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:52,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 27 [2022-02-10 02:24:52,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316822560] [2022-02-10 02:24:52,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:52,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 02:24:52,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 02:24:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:24:52,232 INFO L87 Difference]: Start difference. First operand 297 states and 411 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:53,585 INFO L93 Difference]: Finished difference Result 702 states and 962 transitions. [2022-02-10 02:24:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 02:24:53,586 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-10 02:24:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:53,589 INFO L225 Difference]: With dead ends: 702 [2022-02-10 02:24:53,589 INFO L226 Difference]: Without dead ends: 695 [2022-02-10 02:24:53,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1331, Invalid=5979, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 02:24:53,593 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 343 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:53,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1436 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:24:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-02-10 02:24:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 317. [2022-02-10 02:24:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3860759493670887) internal successors, (438), 316 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 438 transitions. [2022-02-10 02:24:53,602 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 438 transitions. Word has length 77 [2022-02-10 02:24:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:53,602 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 438 transitions. [2022-02-10 02:24:53,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 438 transitions. [2022-02-10 02:24:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 02:24:53,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:53,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:24:53,633 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 02:24:53,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 02:24:53,828 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1932957669, now seen corresponding path program 10 times [2022-02-10 02:24:53,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:53,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344185414] [2022-02-10 02:24:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:53,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:53,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:53,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344185414] [2022-02-10 02:24:53,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344185414] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:53,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212710787] [2022-02-10 02:24:53,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:24:53,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:53,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:53,976 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 02:24:53,977 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 02:24:54,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:24:54,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:54,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:24:54,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:54,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:54,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212710787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:54,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:54,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-10 02:24:54,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597525552] [2022-02-10 02:24:54,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:54,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 02:24:54,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:54,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 02:24:54,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:24:54,805 INFO L87 Difference]: Start difference. First operand 317 states and 438 transitions. Second operand has 30 states, 30 states have (on average 5.433333333333334) internal successors, (163), 30 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:56,135 INFO L93 Difference]: Finished difference Result 700 states and 921 transitions. [2022-02-10 02:24:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 02:24:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.433333333333334) internal successors, (163), 30 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-10 02:24:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:56,138 INFO L225 Difference]: With dead ends: 700 [2022-02-10 02:24:56,139 INFO L226 Difference]: Without dead ends: 699 [2022-02-10 02:24:56,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1206, Invalid=4800, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 02:24:56,141 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 574 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:56,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1160 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:24:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-02-10 02:24:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 369. [2022-02-10 02:24:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.4266304347826086) internal successors, (525), 368 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 525 transitions. [2022-02-10 02:24:56,149 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 525 transitions. Word has length 77 [2022-02-10 02:24:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:56,150 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 525 transitions. [2022-02-10 02:24:56,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.433333333333334) internal successors, (163), 30 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 525 transitions. [2022-02-10 02:24:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 02:24:56,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:56,152 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:24:56,179 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 02:24:56,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 02:24:56,379 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2095124481, now seen corresponding path program 11 times [2022-02-10 02:24:56,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:56,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729339532] [2022-02-10 02:24:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:56,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:56,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:56,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729339532] [2022-02-10 02:24:56,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729339532] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:56,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455194406] [2022-02-10 02:24:56,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:24:56,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:56,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:56,512 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 02:24:56,513 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 02:24:56,569 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:24:56,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:56,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:24:56,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:56,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:24:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:57,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455194406] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:24:57,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:24:57,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-10 02:24:57,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858034534] [2022-02-10 02:24:57,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:24:57,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:24:57,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:24:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:24:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:24:57,256 INFO L87 Difference]: Start difference. First operand 369 states and 525 transitions. Second operand has 31 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:24:58,998 INFO L93 Difference]: Finished difference Result 684 states and 926 transitions. [2022-02-10 02:24:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 02:24:58,999 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-10 02:24:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:24:59,001 INFO L225 Difference]: With dead ends: 684 [2022-02-10 02:24:59,001 INFO L226 Difference]: Without dead ends: 675 [2022-02-10 02:24:59,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1586, Invalid=6604, Unknown=0, NotChecked=0, Total=8190 [2022-02-10 02:24:59,004 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 425 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:24:59,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 866 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:24:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-02-10 02:24:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 323. [2022-02-10 02:24:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.391304347826087) internal successors, (448), 322 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 448 transitions. [2022-02-10 02:24:59,013 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 448 transitions. Word has length 77 [2022-02-10 02:24:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:24:59,014 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 448 transitions. [2022-02-10 02:24:59,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:24:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 448 transitions. [2022-02-10 02:24:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 02:24:59,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:24:59,015 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:24:59,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-10 02:24:59,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 02:24:59,238 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:24:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:24:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1808243581, now seen corresponding path program 12 times [2022-02-10 02:24:59,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:24:59,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763750840] [2022-02-10 02:24:59,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:24:59,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:24:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:24:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:59,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:24:59,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763750840] [2022-02-10 02:24:59,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763750840] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:24:59,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064840228] [2022-02-10 02:24:59,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:24:59,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:24:59,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:24:59,384 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 02:24:59,384 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 02:24:59,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:24:59,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:24:59,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:24:59,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:24:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:24:59,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:00,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064840228] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:00,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:00,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2022-02-10 02:25:00,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098252973] [2022-02-10 02:25:00,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:00,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 02:25:00,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 02:25:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:25:00,069 INFO L87 Difference]: Start difference. First operand 323 states and 448 transitions. Second operand has 35 states, 35 states have (on average 5.2) internal successors, (182), 35 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:01,845 INFO L93 Difference]: Finished difference Result 1026 states and 1410 transitions. [2022-02-10 02:25:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-10 02:25:01,845 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.2) internal successors, (182), 35 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-10 02:25:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:01,848 INFO L225 Difference]: With dead ends: 1026 [2022-02-10 02:25:01,848 INFO L226 Difference]: Without dead ends: 994 [2022-02-10 02:25:01,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3861 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2729, Invalid=9927, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:25:01,853 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 627 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:01,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 1096 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:25:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-02-10 02:25:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 336. [2022-02-10 02:25:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.3940298507462687) internal successors, (467), 335 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 467 transitions. [2022-02-10 02:25:01,862 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 467 transitions. Word has length 77 [2022-02-10 02:25:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:01,863 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 467 transitions. [2022-02-10 02:25:01,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.2) internal successors, (182), 35 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 467 transitions. [2022-02-10 02:25:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 02:25:01,864 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:01,864 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 02:25:01,891 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 02:25:02,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 02:25:02,091 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:02,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -51033217, now seen corresponding path program 13 times [2022-02-10 02:25:02,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:02,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722362302] [2022-02-10 02:25:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:02,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:02,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:02,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722362302] [2022-02-10 02:25:02,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722362302] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:02,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132918459] [2022-02-10 02:25:02,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:25:02,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:02,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:02,217 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 02:25:02,218 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 02:25:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:02,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:25:02,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:02,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:25:02,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132918459] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:02,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:02,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-02-10 02:25:02,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297015140] [2022-02-10 02:25:02,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:02,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 02:25:02,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:02,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 02:25:02,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-02-10 02:25:02,877 INFO L87 Difference]: Start difference. First operand 336 states and 467 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:03,737 INFO L93 Difference]: Finished difference Result 555 states and 739 transitions. [2022-02-10 02:25:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:25:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-10 02:25:03,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:03,739 INFO L225 Difference]: With dead ends: 555 [2022-02-10 02:25:03,739 INFO L226 Difference]: Without dead ends: 553 [2022-02-10 02:25:03,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1123, Invalid=4133, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 02:25:03,742 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 426 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:03,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 677 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:25:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-02-10 02:25:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 336. [2022-02-10 02:25:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.3880597014925373) internal successors, (465), 335 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 465 transitions. [2022-02-10 02:25:03,750 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 465 transitions. Word has length 77 [2022-02-10 02:25:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:03,750 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 465 transitions. [2022-02-10 02:25:03,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 465 transitions. [2022-02-10 02:25:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 02:25:03,752 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:03,752 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:03,781 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 02:25:03,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:03,971 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:03,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1001829571, now seen corresponding path program 14 times [2022-02-10 02:25:03,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:03,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834507037] [2022-02-10 02:25:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:03,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:04,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:04,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834507037] [2022-02-10 02:25:04,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834507037] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:04,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642876913] [2022-02-10 02:25:04,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:25:04,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:04,080 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 02:25:04,109 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 02:25:04,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:25:04,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:04,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 02:25:04,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:04,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:04,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642876913] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:04,957 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:04,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2022-02-10 02:25:04,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574055225] [2022-02-10 02:25:04,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:04,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:25:04,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:25:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:25:04,958 INFO L87 Difference]: Start difference. First operand 336 states and 465 transitions. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:05,060 INFO L93 Difference]: Finished difference Result 589 states and 801 transitions. [2022-02-10 02:25:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:25:05,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-10 02:25:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:05,061 INFO L225 Difference]: With dead ends: 589 [2022-02-10 02:25:05,061 INFO L226 Difference]: Without dead ends: 554 [2022-02-10 02:25:05,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:25:05,062 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 306 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:05,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 788 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:25:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-02-10 02:25:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 420. [2022-02-10 02:25:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.4009546539379476) internal successors, (587), 419 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 587 transitions. [2022-02-10 02:25:05,069 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 587 transitions. Word has length 79 [2022-02-10 02:25:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:05,069 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 587 transitions. [2022-02-10 02:25:05,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 587 transitions. [2022-02-10 02:25:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 02:25:05,070 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:05,070 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:05,087 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 02:25:05,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 02:25:05,271 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1044286273, now seen corresponding path program 15 times [2022-02-10 02:25:05,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:05,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830955755] [2022-02-10 02:25:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:05,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:05,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:05,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830955755] [2022-02-10 02:25:05,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830955755] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:05,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256197254] [2022-02-10 02:25:05,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:25:05,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:05,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:05,431 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 02:25:05,432 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 02:25:05,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:25:05,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:05,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:25:05,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:05,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:05,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256197254] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:05,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:05,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 22 [2022-02-10 02:25:05,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215844493] [2022-02-10 02:25:05,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:05,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:25:05,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:25:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:25:05,916 INFO L87 Difference]: Start difference. First operand 420 states and 587 transitions. Second operand has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:06,407 INFO L93 Difference]: Finished difference Result 711 states and 974 transitions. [2022-02-10 02:25:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 02:25:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-10 02:25:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:06,409 INFO L225 Difference]: With dead ends: 711 [2022-02-10 02:25:06,409 INFO L226 Difference]: Without dead ends: 708 [2022-02-10 02:25:06,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=1728, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 02:25:06,410 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 198 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:06,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 943 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:25:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-02-10 02:25:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 432. [2022-02-10 02:25:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.419953596287703) internal successors, (612), 431 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 612 transitions. [2022-02-10 02:25:06,418 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 612 transitions. Word has length 79 [2022-02-10 02:25:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:06,418 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 612 transitions. [2022-02-10 02:25:06,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 612 transitions. [2022-02-10 02:25:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 02:25:06,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:06,420 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:06,436 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 02:25:06,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:06,624 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:06,624 INFO L85 PathProgramCache]: Analyzing trace with hash 420397345, now seen corresponding path program 16 times [2022-02-10 02:25:06,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:06,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503479019] [2022-02-10 02:25:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:06,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:06,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:06,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503479019] [2022-02-10 02:25:06,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503479019] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:06,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045093482] [2022-02-10 02:25:06,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:25:06,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:06,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:06,745 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 02:25:06,746 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 02:25:06,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:25:06,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:06,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:25:06,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:07,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:07,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045093482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:07,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:07,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-02-10 02:25:07,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497393715] [2022-02-10 02:25:07,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:07,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 02:25:07,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:07,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 02:25:07,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:25:07,538 INFO L87 Difference]: Start difference. First operand 432 states and 612 transitions. Second operand has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:09,781 INFO L93 Difference]: Finished difference Result 1389 states and 1907 transitions. [2022-02-10 02:25:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-10 02:25:09,782 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-10 02:25:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:09,785 INFO L225 Difference]: With dead ends: 1389 [2022-02-10 02:25:09,785 INFO L226 Difference]: Without dead ends: 1354 [2022-02-10 02:25:09,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2072, Invalid=10810, Unknown=0, NotChecked=0, Total=12882 [2022-02-10 02:25:09,788 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 387 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:09,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1102 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:25:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-02-10 02:25:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 557. [2022-02-10 02:25:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.4532374100719425) internal successors, (808), 556 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 808 transitions. [2022-02-10 02:25:09,803 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 808 transitions. Word has length 79 [2022-02-10 02:25:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:09,803 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 808 transitions. [2022-02-10 02:25:09,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 808 transitions. [2022-02-10 02:25:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 02:25:09,804 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:09,805 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:09,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-10 02:25:10,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:10,019 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2117359587, now seen corresponding path program 17 times [2022-02-10 02:25:10,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:10,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499999974] [2022-02-10 02:25:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:10,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:10,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:10,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499999974] [2022-02-10 02:25:10,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499999974] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:10,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851411919] [2022-02-10 02:25:10,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:25:10,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:10,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:10,175 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 02:25:10,176 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 02:25:10,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:25:10,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:10,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:25:10,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:10,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:11,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851411919] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:11,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:11,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-02-10 02:25:11,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492356915] [2022-02-10 02:25:11,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:11,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:25:11,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:25:11,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1218, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:25:11,246 INFO L87 Difference]: Start difference. First operand 557 states and 808 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:12,680 INFO L93 Difference]: Finished difference Result 1068 states and 1566 transitions. [2022-02-10 02:25:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 02:25:12,681 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-10 02:25:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:12,683 INFO L225 Difference]: With dead ends: 1068 [2022-02-10 02:25:12,683 INFO L226 Difference]: Without dead ends: 1065 [2022-02-10 02:25:12,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1341, Invalid=6141, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:25:12,685 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 383 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:12,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 734 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:25:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-02-10 02:25:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 548. [2022-02-10 02:25:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.4515539305301646) internal successors, (794), 547 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 794 transitions. [2022-02-10 02:25:12,698 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 794 transitions. Word has length 79 [2022-02-10 02:25:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:12,698 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 794 transitions. [2022-02-10 02:25:12,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 794 transitions. [2022-02-10 02:25:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:12,700 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:12,700 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:12,723 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 02:25:12,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:12,915 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:12,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash -33644733, now seen corresponding path program 18 times [2022-02-10 02:25:12,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:12,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137381298] [2022-02-10 02:25:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:12,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:13,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:13,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137381298] [2022-02-10 02:25:13,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137381298] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:13,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507152639] [2022-02-10 02:25:13,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:25:13,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:13,152 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 02:25:13,163 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 02:25:13,251 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:25:13,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:13,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:25:13,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:13,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:13,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507152639] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:13,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:13,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 40 [2022-02-10 02:25:13,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451656201] [2022-02-10 02:25:13,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:13,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:25:13,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:25:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:25:13,958 INFO L87 Difference]: Start difference. First operand 548 states and 794 transitions. Second operand has 40 states, 40 states have (on average 4.65) internal successors, (186), 40 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:17,144 INFO L93 Difference]: Finished difference Result 1577 states and 2160 transitions. [2022-02-10 02:25:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-10 02:25:17,145 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.65) internal successors, (186), 40 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-10 02:25:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:17,149 INFO L225 Difference]: With dead ends: 1577 [2022-02-10 02:25:17,149 INFO L226 Difference]: Without dead ends: 1562 [2022-02-10 02:25:17,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8011 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4905, Invalid=20217, Unknown=0, NotChecked=0, Total=25122 [2022-02-10 02:25:17,152 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 849 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:17,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 1898 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:25:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-02-10 02:25:17,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 614. [2022-02-10 02:25:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.4584013050570963) internal successors, (894), 613 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 894 transitions. [2022-02-10 02:25:17,166 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 894 transitions. Word has length 84 [2022-02-10 02:25:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:17,167 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 894 transitions. [2022-02-10 02:25:17,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.65) internal successors, (186), 40 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 894 transitions. [2022-02-10 02:25:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:17,168 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:17,168 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:17,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 02:25:17,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:17,374 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash 164020547, now seen corresponding path program 19 times [2022-02-10 02:25:17,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:17,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533782251] [2022-02-10 02:25:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:17,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:17,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:17,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533782251] [2022-02-10 02:25:17,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533782251] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:17,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817552095] [2022-02-10 02:25:17,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:25:17,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:17,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:17,572 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 02:25:17,573 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 02:25:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:17,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:25:17,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:17,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:18,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817552095] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:18,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:18,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 38 [2022-02-10 02:25:18,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702398595] [2022-02-10 02:25:18,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:18,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 02:25:18,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:18,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 02:25:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:25:18,466 INFO L87 Difference]: Start difference. First operand 614 states and 894 transitions. Second operand has 38 states, 38 states have (on average 4.7105263157894735) internal successors, (179), 38 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 02:25:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:21,116 INFO L93 Difference]: Finished difference Result 1335 states and 1817 transitions. [2022-02-10 02:25:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-10 02:25:21,116 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.7105263157894735) internal successors, (179), 38 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 84 [2022-02-10 02:25:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:21,120 INFO L225 Difference]: With dead ends: 1335 [2022-02-10 02:25:21,120 INFO L226 Difference]: Without dead ends: 1334 [2022-02-10 02:25:21,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4612 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3000, Invalid=12500, Unknown=0, NotChecked=0, Total=15500 [2022-02-10 02:25:21,123 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 637 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:21,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 1714 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2022-02-10 02:25:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 649. [2022-02-10 02:25:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.4675925925925926) internal successors, (951), 648 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 951 transitions. [2022-02-10 02:25:21,137 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 951 transitions. Word has length 84 [2022-02-10 02:25:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:21,137 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 951 transitions. [2022-02-10 02:25:21,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.7105263157894735) internal successors, (179), 38 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 02:25:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 951 transitions. [2022-02-10 02:25:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:21,139 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:21,139 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:21,160 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 02:25:21,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-10 02:25:21,352 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash 326187359, now seen corresponding path program 20 times [2022-02-10 02:25:21,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:21,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394449919] [2022-02-10 02:25:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:21,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:21,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:21,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394449919] [2022-02-10 02:25:21,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394449919] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:21,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455820835] [2022-02-10 02:25:21,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:25:21,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:21,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:21,552 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 02:25:21,554 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 02:25:21,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:25:21,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:21,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:25:21,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:21,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:22,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455820835] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:22,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:22,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 39 [2022-02-10 02:25:22,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981098650] [2022-02-10 02:25:22,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:22,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 02:25:22,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:22,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 02:25:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 02:25:22,675 INFO L87 Difference]: Start difference. First operand 649 states and 951 transitions. Second operand has 39 states, 39 states have (on average 4.794871794871795) internal successors, (187), 39 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:26,910 INFO L93 Difference]: Finished difference Result 1598 states and 2254 transitions. [2022-02-10 02:25:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-10 02:25:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.794871794871795) internal successors, (187), 39 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-10 02:25:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:26,914 INFO L225 Difference]: With dead ends: 1598 [2022-02-10 02:25:26,915 INFO L226 Difference]: Without dead ends: 1583 [2022-02-10 02:25:26,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8827 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4961, Invalid=22099, Unknown=0, NotChecked=0, Total=27060 [2022-02-10 02:25:26,920 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 589 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:26,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1257 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:25:26,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-02-10 02:25:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 623. [2022-02-10 02:25:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.4533762057877813) internal successors, (904), 622 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 904 transitions. [2022-02-10 02:25:26,936 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 904 transitions. Word has length 84 [2022-02-10 02:25:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:26,936 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 904 transitions. [2022-02-10 02:25:26,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.794871794871795) internal successors, (187), 39 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 904 transitions. [2022-02-10 02:25:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:26,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:26,938 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:26,963 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 02:25:27,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-10 02:25:27,164 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1542573281, now seen corresponding path program 21 times [2022-02-10 02:25:27,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:27,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868044024] [2022-02-10 02:25:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:27,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:27,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:27,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868044024] [2022-02-10 02:25:27,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868044024] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:27,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065170531] [2022-02-10 02:25:27,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:25:27,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:27,354 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 02:25:27,355 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 02:25:27,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:25:27,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:25:27,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:27,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:28,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065170531] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:28,346 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:28,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 43 [2022-02-10 02:25:28,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168392661] [2022-02-10 02:25:28,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:28,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 02:25:28,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 02:25:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1571, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:25:28,348 INFO L87 Difference]: Start difference. First operand 623 states and 904 transitions. Second operand has 43 states, 43 states have (on average 4.604651162790698) internal successors, (198), 43 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:31,170 INFO L93 Difference]: Finished difference Result 1847 states and 2598 transitions. [2022-02-10 02:25:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-10 02:25:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.604651162790698) internal successors, (198), 43 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-10 02:25:31,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:31,175 INFO L225 Difference]: With dead ends: 1847 [2022-02-10 02:25:31,176 INFO L226 Difference]: Without dead ends: 1791 [2022-02-10 02:25:31,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5883 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4105, Invalid=16201, Unknown=0, NotChecked=0, Total=20306 [2022-02-10 02:25:31,179 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 616 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:31,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1605 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:25:31,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-02-10 02:25:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 708. [2022-02-10 02:25:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.4653465346534653) internal successors, (1036), 707 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1036 transitions. [2022-02-10 02:25:31,196 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1036 transitions. Word has length 84 [2022-02-10 02:25:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:31,196 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1036 transitions. [2022-02-10 02:25:31,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.604651162790698) internal successors, (198), 43 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1036 transitions. [2022-02-10 02:25:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:31,197 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:31,198 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:31,215 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 02:25:31,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:31,399 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash 514258525, now seen corresponding path program 22 times [2022-02-10 02:25:31,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:31,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580787138] [2022-02-10 02:25:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:31,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:31,589 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:31,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580787138] [2022-02-10 02:25:31,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580787138] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:31,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701083223] [2022-02-10 02:25:31,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:25:31,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:31,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:31,590 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 02:25:31,617 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 02:25:31,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:25:31,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:31,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:25:31,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:32,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:32,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701083223] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:32,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:32,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 16] total 41 [2022-02-10 02:25:32,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224438367] [2022-02-10 02:25:32,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:32,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:25:32,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:25:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1346, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:25:32,581 INFO L87 Difference]: Start difference. First operand 708 states and 1036 transitions. Second operand has 41 states, 41 states have (on average 4.463414634146342) internal successors, (183), 41 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:34,363 INFO L93 Difference]: Finished difference Result 1380 states and 1928 transitions. [2022-02-10 02:25:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 02:25:34,363 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.463414634146342) internal successors, (183), 41 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-10 02:25:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:34,367 INFO L225 Difference]: With dead ends: 1380 [2022-02-10 02:25:34,367 INFO L226 Difference]: Without dead ends: 1378 [2022-02-10 02:25:34,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3288 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2273, Invalid=9069, Unknown=0, NotChecked=0, Total=11342 [2022-02-10 02:25:34,369 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 656 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:34,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1385 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-02-10 02:25:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 805. [2022-02-10 02:25:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 1.4838308457711442) internal successors, (1193), 804 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1193 transitions. [2022-02-10 02:25:34,384 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1193 transitions. Word has length 84 [2022-02-10 02:25:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:34,384 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1193 transitions. [2022-02-10 02:25:34,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.463414634146342) internal successors, (183), 41 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1193 transitions. [2022-02-10 02:25:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:34,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:34,386 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:34,408 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 02:25:34,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:34,600 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1593433893, now seen corresponding path program 23 times [2022-02-10 02:25:34,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:34,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403056320] [2022-02-10 02:25:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:34,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:25:34,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:34,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403056320] [2022-02-10 02:25:34,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403056320] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:34,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744666034] [2022-02-10 02:25:34,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:25:34,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:34,787 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 02:25:34,787 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 02:25:34,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:25:34,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:34,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:25:34,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:35,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:35,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744666034] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:35,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:35,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 16] total 41 [2022-02-10 02:25:35,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41526549] [2022-02-10 02:25:35,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:35,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 02:25:35,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 02:25:35,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:25:35,658 INFO L87 Difference]: Start difference. First operand 805 states and 1193 transitions. Second operand has 41 states, 41 states have (on average 4.512195121951219) internal successors, (185), 41 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:39,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:39,507 INFO L93 Difference]: Finished difference Result 1980 states and 2822 transitions. [2022-02-10 02:25:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-10 02:25:39,507 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.512195121951219) internal successors, (185), 41 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-10 02:25:39,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:39,512 INFO L225 Difference]: With dead ends: 1980 [2022-02-10 02:25:39,512 INFO L226 Difference]: Without dead ends: 1978 [2022-02-10 02:25:39,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8661 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5378, Invalid=22344, Unknown=0, NotChecked=0, Total=27722 [2022-02-10 02:25:39,517 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 715 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:39,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 1505 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:25:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-02-10 02:25:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 893. [2022-02-10 02:25:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.507847533632287) internal successors, (1345), 892 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1345 transitions. [2022-02-10 02:25:39,538 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1345 transitions. Word has length 84 [2022-02-10 02:25:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:39,538 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 1345 transitions. [2022-02-10 02:25:39,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.512195121951219) internal successors, (185), 41 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1345 transitions. [2022-02-10 02:25:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:39,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:39,540 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:39,556 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 02:25:39,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-10 02:25:39,741 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:39,741 INFO L85 PathProgramCache]: Analyzing trace with hash 285326393, now seen corresponding path program 24 times [2022-02-10 02:25:39,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:39,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083271346] [2022-02-10 02:25:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:39,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:39,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:39,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083271346] [2022-02-10 02:25:39,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083271346] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:39,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535553906] [2022-02-10 02:25:39,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:25:39,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:39,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:39,933 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 02:25:39,934 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 02:25:39,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:25:39,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:39,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:25:39,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:40,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535553906] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:40,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:40,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 17] total 49 [2022-02-10 02:25:40,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123973301] [2022-02-10 02:25:40,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:40,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 02:25:40,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 02:25:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2015, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 02:25:40,950 INFO L87 Difference]: Start difference. First operand 893 states and 1345 transitions. Second operand has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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 02:25:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:43,990 INFO L93 Difference]: Finished difference Result 2746 states and 3960 transitions. [2022-02-10 02:25:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-10 02:25:43,990 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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 84 [2022-02-10 02:25:43,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:44,000 INFO L225 Difference]: With dead ends: 2746 [2022-02-10 02:25:44,000 INFO L226 Difference]: Without dead ends: 2690 [2022-02-10 02:25:44,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8915 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5431, Invalid=21301, Unknown=0, NotChecked=0, Total=26732 [2022-02-10 02:25:44,003 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 1063 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:44,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 1894 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:25:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-02-10 02:25:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1080. [2022-02-10 02:25:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 1.5125115848007413) internal successors, (1632), 1079 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1632 transitions. [2022-02-10 02:25:44,027 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1632 transitions. Word has length 84 [2022-02-10 02:25:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:44,028 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 1632 transitions. [2022-02-10 02:25:44,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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 02:25:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1632 transitions. [2022-02-10 02:25:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-10 02:25:44,030 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:44,030 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-02-10 02:25:44,055 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 02:25:44,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-10 02:25:44,244 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:44,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash -742988363, now seen corresponding path program 25 times [2022-02-10 02:25:44,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:44,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499916851] [2022-02-10 02:25:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:44,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:44,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:44,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499916851] [2022-02-10 02:25:44,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499916851] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:44,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378368259] [2022-02-10 02:25:44,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:25:44,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:44,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:44,405 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 02:25:44,405 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 02:25:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:44,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 02:25:44,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:44,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:25:45,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378368259] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:45,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:45,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 14] total 42 [2022-02-10 02:25:45,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974620519] [2022-02-10 02:25:45,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:45,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 02:25:45,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 02:25:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:25:45,307 INFO L87 Difference]: Start difference. First operand 1080 states and 1632 transitions. Second operand has 42 states, 42 states have (on average 4.428571428571429) internal successors, (186), 42 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:47,186 INFO L93 Difference]: Finished difference Result 1885 states and 2691 transitions. [2022-02-10 02:25:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 02:25:47,188 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.428571428571429) internal successors, (186), 42 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-02-10 02:25:47,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:47,193 INFO L225 Difference]: With dead ends: 1885 [2022-02-10 02:25:47,193 INFO L226 Difference]: Without dead ends: 1883 [2022-02-10 02:25:47,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4259 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2853, Invalid=11189, Unknown=0, NotChecked=0, Total=14042 [2022-02-10 02:25:47,196 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 439 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:47,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1457 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:25:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2022-02-10 02:25:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1060. [2022-02-10 02:25:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.5108593012275733) internal successors, (1600), 1059 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1600 transitions. [2022-02-10 02:25:47,216 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1600 transitions. Word has length 84 [2022-02-10 02:25:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:47,216 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1600 transitions. [2022-02-10 02:25:47,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.428571428571429) internal successors, (186), 42 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1600 transitions. [2022-02-10 02:25:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:25:47,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:47,218 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:47,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 02:25:47,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 02:25:47,431 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:47,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1429443295, now seen corresponding path program 26 times [2022-02-10 02:25:47,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:47,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270847222] [2022-02-10 02:25:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:47,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:47,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:47,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270847222] [2022-02-10 02:25:47,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270847222] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:47,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085498178] [2022-02-10 02:25:47,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:25:47,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:47,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:47,529 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 02:25:47,561 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 02:25:47,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:25:47,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:47,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:25:47,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:47,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:48,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085498178] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:48,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:48,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 17 [2022-02-10 02:25:48,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272517993] [2022-02-10 02:25:48,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:48,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:25:48,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:25:48,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:25:48,445 INFO L87 Difference]: Start difference. First operand 1060 states and 1600 transitions. Second operand has 17 states, 17 states have (on average 8.705882352941176) internal successors, (148), 17 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 02:25:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:48,568 INFO L93 Difference]: Finished difference Result 1644 states and 2457 transitions. [2022-02-10 02:25:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 02:25:48,568 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.705882352941176) internal successors, (148), 17 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 86 [2022-02-10 02:25:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:48,571 INFO L225 Difference]: With dead ends: 1644 [2022-02-10 02:25:48,572 INFO L226 Difference]: Without dead ends: 1605 [2022-02-10 02:25:48,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:25:48,573 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 290 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:48,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1182 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:25:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2022-02-10 02:25:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1307. [2022-02-10 02:25:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 1.5229709035222052) internal successors, (1989), 1306 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1989 transitions. [2022-02-10 02:25:48,591 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1989 transitions. Word has length 86 [2022-02-10 02:25:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:48,591 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 1989 transitions. [2022-02-10 02:25:48,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.705882352941176) internal successors, (148), 17 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 02:25:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1989 transitions. [2022-02-10 02:25:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:25:48,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:48,594 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:48,618 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 02:25:48,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:48,815 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1263308259, now seen corresponding path program 27 times [2022-02-10 02:25:48,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:48,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134406770] [2022-02-10 02:25:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:48,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:49,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:49,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134406770] [2022-02-10 02:25:49,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134406770] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:49,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027411869] [2022-02-10 02:25:49,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:25:49,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:49,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:49,035 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 02:25:49,036 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 02:25:49,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:25:49,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:49,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:25:49,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:49,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:49,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027411869] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:49,559 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:49,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 8] total 28 [2022-02-10 02:25:49,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54823058] [2022-02-10 02:25:49,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:49,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 02:25:49,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 02:25:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:25:49,561 INFO L87 Difference]: Start difference. First operand 1307 states and 1989 transitions. Second operand has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 28 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:50,322 INFO L93 Difference]: Finished difference Result 2140 states and 3159 transitions. [2022-02-10 02:25:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 02:25:50,322 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 28 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-10 02:25:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:50,326 INFO L225 Difference]: With dead ends: 2140 [2022-02-10 02:25:50,326 INFO L226 Difference]: Without dead ends: 2137 [2022-02-10 02:25:50,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 158 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=531, Invalid=3501, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 02:25:50,327 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 256 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:50,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 1408 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:25:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2022-02-10 02:25:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1325. [2022-02-10 02:25:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.5362537764350452) internal successors, (2034), 1324 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2034 transitions. [2022-02-10 02:25:50,346 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2034 transitions. Word has length 86 [2022-02-10 02:25:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:50,347 INFO L470 AbstractCegarLoop]: Abstraction has 1325 states and 2034 transitions. [2022-02-10 02:25:50,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 28 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2034 transitions. [2022-02-10 02:25:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:25:50,349 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:50,349 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:50,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 02:25:50,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:50,563 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 297253055, now seen corresponding path program 28 times [2022-02-10 02:25:50,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:50,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279248408] [2022-02-10 02:25:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:50,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:50,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:50,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279248408] [2022-02-10 02:25:50,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279248408] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:50,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193302187] [2022-02-10 02:25:50,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:25:50,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:50,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:50,770 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 02:25:50,780 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 02:25:50,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:25:50,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:50,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:25:50,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:51,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:52,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193302187] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:52,001 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:52,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 02:25:52,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972533748] [2022-02-10 02:25:52,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:52,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:25:52,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:25:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1335, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:25:52,003 INFO L87 Difference]: Start difference. First operand 1325 states and 2034 transitions. Second operand has 40 states, 40 states have (on average 4.025) internal successors, (161), 40 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:25:56,068 INFO L93 Difference]: Finished difference Result 3135 states and 4471 transitions. [2022-02-10 02:25:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-02-10 02:25:56,068 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.025) internal successors, (161), 40 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-10 02:25:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:25:56,073 INFO L225 Difference]: With dead ends: 3135 [2022-02-10 02:25:56,074 INFO L226 Difference]: Without dead ends: 3092 [2022-02-10 02:25:56,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12029 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4471, Invalid=28109, Unknown=0, NotChecked=0, Total=32580 [2022-02-10 02:25:56,078 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 709 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:25:56,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1690 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:25:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-02-10 02:25:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 1492. [2022-02-10 02:25:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 1.5419181757209925) internal successors, (2299), 1491 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2299 transitions. [2022-02-10 02:25:56,105 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2299 transitions. Word has length 86 [2022-02-10 02:25:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:25:56,105 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 2299 transitions. [2022-02-10 02:25:56,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.025) internal successors, (161), 40 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:25:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2299 transitions. [2022-02-10 02:25:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:25:56,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:25:56,108 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:25:56,126 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 02:25:56,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:56,317 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:25:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:25:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2054463419, now seen corresponding path program 29 times [2022-02-10 02:25:56,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:25:56,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521806839] [2022-02-10 02:25:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:25:56,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:25:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:25:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:56,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:25:56,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521806839] [2022-02-10 02:25:56,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521806839] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:25:56,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919059056] [2022-02-10 02:25:56,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:25:56,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:25:56,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:25:56,510 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 02:25:56,514 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 02:25:56,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:25:56,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:25:56,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:25:56,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:25:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:57,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:25:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:25:57,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919059056] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:25:57,896 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:25:57,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 46 [2022-02-10 02:25:57,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331472336] [2022-02-10 02:25:57,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:25:57,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-10 02:25:57,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:25:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-10 02:25:57,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1735, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 02:25:57,898 INFO L87 Difference]: Start difference. First operand 1492 states and 2299 transitions. Second operand has 46 states, 46 states have (on average 3.5) internal successors, (161), 46 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:01,636 INFO L93 Difference]: Finished difference Result 3346 states and 5095 transitions. [2022-02-10 02:26:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-10 02:26:01,637 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5) internal successors, (161), 46 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-10 02:26:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:01,642 INFO L225 Difference]: With dead ends: 3346 [2022-02-10 02:26:01,642 INFO L226 Difference]: Without dead ends: 3343 [2022-02-10 02:26:01,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8062 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3334, Invalid=19316, Unknown=0, NotChecked=0, Total=22650 [2022-02-10 02:26:01,645 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 883 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:01,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 1678 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:26:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-02-10 02:26:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 1476. [2022-02-10 02:26:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 1.5437288135593221) internal successors, (2277), 1475 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2277 transitions. [2022-02-10 02:26:01,673 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2277 transitions. Word has length 86 [2022-02-10 02:26:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:01,673 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 2277 transitions. [2022-02-10 02:26:01,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5) internal successors, (161), 46 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2277 transitions. [2022-02-10 02:26:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:26:01,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:01,676 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:26:01,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-10 02:26:01,876 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,SelfDestructingSolverStorable32 [2022-02-10 02:26:01,877 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1736076837, now seen corresponding path program 30 times [2022-02-10 02:26:01,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:01,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657604277] [2022-02-10 02:26:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:01,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:02,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:02,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657604277] [2022-02-10 02:26:02,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657604277] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:02,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791536106] [2022-02-10 02:26:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:26:02,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:02,114 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 02:26:02,118 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 02:26:02,182 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:26:02,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:26:02,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:02,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:03,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791536106] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:03,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:03,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 48 [2022-02-10 02:26:03,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569546230] [2022-02-10 02:26:03,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:03,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 02:26:03,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 02:26:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1997, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:26:03,251 INFO L87 Difference]: Start difference. First operand 1476 states and 2277 transitions. Second operand has 48 states, 48 states have (on average 3.75) internal successors, (180), 48 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:08,489 INFO L93 Difference]: Finished difference Result 5078 states and 7331 transitions. [2022-02-10 02:26:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-02-10 02:26:08,490 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.75) internal successors, (180), 48 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-10 02:26:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:08,499 INFO L225 Difference]: With dead ends: 5078 [2022-02-10 02:26:08,499 INFO L226 Difference]: Without dead ends: 4987 [2022-02-10 02:26:08,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14867 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6191, Invalid=34009, Unknown=0, NotChecked=0, Total=40200 [2022-02-10 02:26:08,505 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 780 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:08,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 2315 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:26:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2022-02-10 02:26:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 1757. [2022-02-10 02:26:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1756 states have (on average 1.5364464692482915) internal successors, (2698), 1756 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2698 transitions. [2022-02-10 02:26:08,545 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2698 transitions. Word has length 86 [2022-02-10 02:26:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:08,545 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 2698 transitions. [2022-02-10 02:26:08,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.75) internal successors, (180), 48 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2698 transitions. [2022-02-10 02:26:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:26:08,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:08,548 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:26:08,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 02:26:08,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:08,763 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1530575703, now seen corresponding path program 31 times [2022-02-10 02:26:08,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:08,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711568369] [2022-02-10 02:26:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:08,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:08,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:08,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711568369] [2022-02-10 02:26:08,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711568369] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:08,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017937449] [2022-02-10 02:26:08,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:26:08,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:08,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:08,954 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 02:26:08,955 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 02:26:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:09,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 02:26:09,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:09,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:10,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017937449] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:10,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:10,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 43 [2022-02-10 02:26:10,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822173788] [2022-02-10 02:26:10,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:10,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-10 02:26:10,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-10 02:26:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1510, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:26:10,007 INFO L87 Difference]: Start difference. First operand 1757 states and 2698 transitions. Second operand has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:12,302 INFO L93 Difference]: Finished difference Result 2975 states and 4466 transitions. [2022-02-10 02:26:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 02:26:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-10 02:26:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:12,308 INFO L225 Difference]: With dead ends: 2975 [2022-02-10 02:26:12,308 INFO L226 Difference]: Without dead ends: 2973 [2022-02-10 02:26:12,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4729 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2373, Invalid=12147, Unknown=0, NotChecked=0, Total=14520 [2022-02-10 02:26:12,311 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 375 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:12,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 1355 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:26:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2022-02-10 02:26:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1584. [2022-02-10 02:26:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 1.5356917245735944) internal successors, (2431), 1583 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2431 transitions. [2022-02-10 02:26:12,341 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2431 transitions. Word has length 86 [2022-02-10 02:26:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:12,341 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 2431 transitions. [2022-02-10 02:26:12,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 43 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2431 transitions. [2022-02-10 02:26:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:26:12,343 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:12,343 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:26:12,373 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 02:26:12,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:12,567 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1848519533, now seen corresponding path program 32 times [2022-02-10 02:26:12,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:12,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498042273] [2022-02-10 02:26:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:12,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:26:12,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:12,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498042273] [2022-02-10 02:26:12,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498042273] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:12,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400852808] [2022-02-10 02:26:12,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:26:12,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:12,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:12,767 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 02:26:12,801 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 02:26:12,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:26:12,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:12,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:26:12,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:13,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:26:13,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400852808] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:13,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:13,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 42 [2022-02-10 02:26:13,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138586313] [2022-02-10 02:26:13,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:13,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-10 02:26:13,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-10 02:26:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:26:13,985 INFO L87 Difference]: Start difference. First operand 1584 states and 2431 transitions. Second operand has 42 states, 42 states have (on average 3.7857142857142856) internal successors, (159), 42 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:17,268 INFO L93 Difference]: Finished difference Result 3143 states and 4624 transitions. [2022-02-10 02:26:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 02:26:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.7857142857142856) internal successors, (159), 42 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-10 02:26:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:17,273 INFO L225 Difference]: With dead ends: 3143 [2022-02-10 02:26:17,273 INFO L226 Difference]: Without dead ends: 3139 [2022-02-10 02:26:17,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4326 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2062, Invalid=11278, Unknown=0, NotChecked=0, Total=13340 [2022-02-10 02:26:17,276 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 507 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:17,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1524 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:26:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-02-10 02:26:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 1839. [2022-02-10 02:26:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1838 states have (on average 1.5522306855277475) internal successors, (2853), 1838 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2853 transitions. [2022-02-10 02:26:17,307 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2853 transitions. Word has length 86 [2022-02-10 02:26:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:17,307 INFO L470 AbstractCegarLoop]: Abstraction has 1839 states and 2853 transitions. [2022-02-10 02:26:17,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.7857142857142856) internal successors, (159), 42 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2853 transitions. [2022-02-10 02:26:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-10 02:26:17,311 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:17,311 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:26:17,335 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 02:26:17,527 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,SelfDestructingSolverStorable35 [2022-02-10 02:26:17,527 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2010686345, now seen corresponding path program 33 times [2022-02-10 02:26:17,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:17,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367251282] [2022-02-10 02:26:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:17,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:17,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:17,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367251282] [2022-02-10 02:26:17,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367251282] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:17,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22692008] [2022-02-10 02:26:17,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:26:17,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:17,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:17,756 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 02:26:17,786 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 02:26:17,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:26:17,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:17,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:26:17,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:18,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:19,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22692008] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:19,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:19,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 47 [2022-02-10 02:26:19,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733646437] [2022-02-10 02:26:19,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:19,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 02:26:19,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 02:26:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1852, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 02:26:19,153 INFO L87 Difference]: Start difference. First operand 1839 states and 2853 transitions. Second operand has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:25,261 INFO L93 Difference]: Finished difference Result 3519 states and 5105 transitions. [2022-02-10 02:26:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-10 02:26:25,262 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-02-10 02:26:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:25,267 INFO L225 Difference]: With dead ends: 3519 [2022-02-10 02:26:25,267 INFO L226 Difference]: Without dead ends: 3474 [2022-02-10 02:26:25,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10566 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4808, Invalid=24262, Unknown=0, NotChecked=0, Total=29070 [2022-02-10 02:26:25,272 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 409 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:25,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 2395 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:26:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2022-02-10 02:26:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 1923. [2022-02-10 02:26:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.5520291363163372) internal successors, (2983), 1922 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2983 transitions. [2022-02-10 02:26:25,307 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2983 transitions. Word has length 86 [2022-02-10 02:26:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:25,307 INFO L470 AbstractCegarLoop]: Abstraction has 1923 states and 2983 transitions. [2022-02-10 02:26:25,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:25,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2983 transitions. [2022-02-10 02:26:25,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:26:25,310 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:25,310 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:26:25,333 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 02:26:25,531 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,SelfDestructingSolverStorable36 [2022-02-10 02:26:25,531 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -566250847, now seen corresponding path program 34 times [2022-02-10 02:26:25,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:25,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438129271] [2022-02-10 02:26:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:25,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:25,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:25,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438129271] [2022-02-10 02:26:25,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438129271] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:25,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581373102] [2022-02-10 02:26:25,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:26:25,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:25,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:25,794 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 02:26:25,795 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 02:26:25,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:26:25,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:26:25,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:26,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:26,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581373102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:26,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:26,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 18] total 47 [2022-02-10 02:26:26,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181729253] [2022-02-10 02:26:26,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:26,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 02:26:26,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:26,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 02:26:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1851, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 02:26:26,979 INFO L87 Difference]: Start difference. First operand 1923 states and 2983 transitions. Second operand has 47 states, 47 states have (on average 4.297872340425532) internal successors, (202), 47 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:30,290 INFO L93 Difference]: Finished difference Result 4348 states and 6527 transitions. [2022-02-10 02:26:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-02-10 02:26:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.297872340425532) internal successors, (202), 47 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:26:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:30,296 INFO L225 Difference]: With dead ends: 4348 [2022-02-10 02:26:30,296 INFO L226 Difference]: Without dead ends: 4327 [2022-02-10 02:26:30,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11467 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=8025, Invalid=27131, Unknown=0, NotChecked=0, Total=35156 [2022-02-10 02:26:30,300 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 734 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:30,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1629 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:26:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-02-10 02:26:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2165. [2022-02-10 02:26:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2165 states, 2164 states have (on average 1.5586876155268021) internal successors, (3373), 2164 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3373 transitions. [2022-02-10 02:26:30,336 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3373 transitions. Word has length 91 [2022-02-10 02:26:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:30,336 INFO L470 AbstractCegarLoop]: Abstraction has 2165 states and 3373 transitions. [2022-02-10 02:26:30,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.297872340425532) internal successors, (202), 47 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3373 transitions. [2022-02-10 02:26:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:26:30,339 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:30,339 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:26:30,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-10 02:26:30,561 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,SelfDestructingSolverStorable37 [2022-02-10 02:26:30,561 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1373805023, now seen corresponding path program 35 times [2022-02-10 02:26:30,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:30,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671387162] [2022-02-10 02:26:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:30,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:30,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:30,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671387162] [2022-02-10 02:26:30,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671387162] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:30,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355911700] [2022-02-10 02:26:30,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:26:30,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:30,804 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 02:26:30,805 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 02:26:30,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:26:30,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:30,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 02:26:30,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 55 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:31,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:31,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355911700] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:31,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:31,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 46 [2022-02-10 02:26:31,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846023952] [2022-02-10 02:26:31,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:31,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-10 02:26:31,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:31,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-10 02:26:31,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1744, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 02:26:31,765 INFO L87 Difference]: Start difference. First operand 2165 states and 3373 transitions. Second operand has 46 states, 46 states have (on average 3.5217391304347827) internal successors, (162), 46 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:36,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:36,579 INFO L93 Difference]: Finished difference Result 6040 states and 9285 transitions. [2022-02-10 02:26:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-02-10 02:26:36,580 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5217391304347827) internal successors, (162), 46 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:26:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:36,586 INFO L225 Difference]: With dead ends: 6040 [2022-02-10 02:26:36,587 INFO L226 Difference]: Without dead ends: 6039 [2022-02-10 02:26:36,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17967 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9290, Invalid=42466, Unknown=0, NotChecked=0, Total=51756 [2022-02-10 02:26:36,594 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 869 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:36,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1787 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:26:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2022-02-10 02:26:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 2302. [2022-02-10 02:26:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2301 states have (on average 1.5662755323772273) internal successors, (3604), 2301 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3604 transitions. [2022-02-10 02:26:36,643 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3604 transitions. Word has length 91 [2022-02-10 02:26:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:36,643 INFO L470 AbstractCegarLoop]: Abstraction has 2302 states and 3604 transitions. [2022-02-10 02:26:36,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5217391304347827) internal successors, (162), 46 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3604 transitions. [2022-02-10 02:26:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:26:36,646 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:36,646 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:26:36,671 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 02:26:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 02:26:36,871 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1211638211, now seen corresponding path program 36 times [2022-02-10 02:26:36,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:36,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665251541] [2022-02-10 02:26:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:36,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:37,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:37,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665251541] [2022-02-10 02:26:37,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665251541] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:37,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037430970] [2022-02-10 02:26:37,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:26:37,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:37,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:37,091 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 02:26:37,092 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 02:26:37,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:26:37,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:37,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:26:37,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:37,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:37,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037430970] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:37,973 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:37,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 19] total 49 [2022-02-10 02:26:37,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143521769] [2022-02-10 02:26:37,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:37,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 02:26:37,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 02:26:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1975, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 02:26:37,975 INFO L87 Difference]: Start difference. First operand 2302 states and 3604 transitions. Second operand has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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 02:26:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:44,971 INFO L93 Difference]: Finished difference Result 4753 states and 7078 transitions. [2022-02-10 02:26:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-02-10 02:26:44,972 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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 91 [2022-02-10 02:26:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:44,978 INFO L225 Difference]: With dead ends: 4753 [2022-02-10 02:26:44,978 INFO L226 Difference]: Without dead ends: 4734 [2022-02-10 02:26:44,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30417 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13388, Invalid=69268, Unknown=0, NotChecked=0, Total=82656 [2022-02-10 02:26:44,990 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1290 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:44,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 1678 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:26:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-02-10 02:26:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 2243. [2022-02-10 02:26:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2242 states have (on average 1.5606601248884924) internal successors, (3499), 2242 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3499 transitions. [2022-02-10 02:26:45,027 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3499 transitions. Word has length 91 [2022-02-10 02:26:45,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:45,027 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 3499 transitions. [2022-02-10 02:26:45,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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 02:26:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3499 transitions. [2022-02-10 02:26:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:26:45,029 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:45,029 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:26:45,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 02:26:45,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-10 02:26:45,230 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:45,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1843235915, now seen corresponding path program 37 times [2022-02-10 02:26:45,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:45,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118859908] [2022-02-10 02:26:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:45,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 23 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:45,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:45,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118859908] [2022-02-10 02:26:45,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118859908] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:45,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625477031] [2022-02-10 02:26:45,472 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:26:45,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:45,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:45,473 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 02:26:45,474 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 02:26:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:45,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:26:45,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 38 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:45,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:46,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625477031] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:46,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:46,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 19] total 50 [2022-02-10 02:26:46,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616070212] [2022-02-10 02:26:46,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:46,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 02:26:46,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 02:26:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=2093, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:26:46,476 INFO L87 Difference]: Start difference. First operand 2243 states and 3499 transitions. Second operand has 50 states, 50 states have (on average 4.08) internal successors, (204), 50 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:51,046 INFO L93 Difference]: Finished difference Result 4645 states and 6986 transitions. [2022-02-10 02:26:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-02-10 02:26:51,046 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.08) internal successors, (204), 50 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:26:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:51,052 INFO L225 Difference]: With dead ends: 4645 [2022-02-10 02:26:51,052 INFO L226 Difference]: Without dead ends: 4634 [2022-02-10 02:26:51,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16193 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9458, Invalid=38284, Unknown=0, NotChecked=0, Total=47742 [2022-02-10 02:26:51,059 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 682 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:51,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1859 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:26:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2022-02-10 02:26:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 2178. [2022-02-10 02:26:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 1.5539733578318788) internal successors, (3383), 2177 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 3383 transitions. [2022-02-10 02:26:51,094 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 3383 transitions. Word has length 91 [2022-02-10 02:26:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:51,095 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 3383 transitions. [2022-02-10 02:26:51,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.08) internal successors, (204), 50 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 3383 transitions. [2022-02-10 02:26:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:26:51,097 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:51,097 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:26:51,113 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 02:26:51,297 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,SelfDestructingSolverStorable40 [2022-02-10 02:26:51,298 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:51,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1944194881, now seen corresponding path program 38 times [2022-02-10 02:26:51,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:51,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162947521] [2022-02-10 02:26:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:51,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:51,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:51,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162947521] [2022-02-10 02:26:51,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162947521] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:51,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726104133] [2022-02-10 02:26:51,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:26:51,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:51,534 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 02:26:51,536 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 02:26:51,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:26:51,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:51,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:26:51,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:52,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:52,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726104133] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:52,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:52,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 19] total 53 [2022-02-10 02:26:52,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7581026] [2022-02-10 02:26:52,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:52,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-10 02:26:52,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-10 02:26:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2375, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:26:52,700 INFO L87 Difference]: Start difference. First operand 2178 states and 3383 transitions. Second operand has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:26:56,071 INFO L93 Difference]: Finished difference Result 5625 states and 8431 transitions. [2022-02-10 02:26:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-10 02:26:56,071 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:26:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:26:56,079 INFO L225 Difference]: With dead ends: 5625 [2022-02-10 02:26:56,079 INFO L226 Difference]: Without dead ends: 5550 [2022-02-10 02:26:56,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10572 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7360, Invalid=25946, Unknown=0, NotChecked=0, Total=33306 [2022-02-10 02:26:56,084 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 635 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:26:56,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 1441 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:26:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2022-02-10 02:26:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 2319. [2022-02-10 02:26:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 1.54702329594478) internal successors, (3586), 2318 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3586 transitions. [2022-02-10 02:26:56,120 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3586 transitions. Word has length 91 [2022-02-10 02:26:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:26:56,120 INFO L470 AbstractCegarLoop]: Abstraction has 2319 states and 3586 transitions. [2022-02-10 02:26:56,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:26:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3586 transitions. [2022-02-10 02:26:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:26:56,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:26:56,123 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:26:56,139 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 02:26:56,323 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,SelfDestructingSolverStorable41 [2022-02-10 02:26:56,324 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:26:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:26:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash 197442747, now seen corresponding path program 39 times [2022-02-10 02:26:56,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:26:56,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239574330] [2022-02-10 02:26:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:26:56,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:26:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:26:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:56,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:26:56,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239574330] [2022-02-10 02:26:56,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239574330] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:26:56,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446874538] [2022-02-10 02:26:56,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:26:56,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:26:56,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:26:56,539 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 02:26:56,540 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 02:26:56,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:26:56,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:26:56,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:26:56,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:26:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:56,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:26:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:26:57,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446874538] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:26:57,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:26:57,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 20] total 52 [2022-02-10 02:26:57,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878999045] [2022-02-10 02:26:57,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:26:57,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-10 02:26:57,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:26:57,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-10 02:26:57,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=2192, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 02:26:57,510 INFO L87 Difference]: Start difference. First operand 2319 states and 3586 transitions. Second operand has 52 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:02,799 INFO L93 Difference]: Finished difference Result 4183 states and 6371 transitions. [2022-02-10 02:27:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-10 02:27:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:02,805 INFO L225 Difference]: With dead ends: 4183 [2022-02-10 02:27:02,805 INFO L226 Difference]: Without dead ends: 4180 [2022-02-10 02:27:02,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19225 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=10781, Invalid=47059, Unknown=0, NotChecked=0, Total=57840 [2022-02-10 02:27:02,813 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 849 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:02,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 1821 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:27:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2022-02-10 02:27:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 2419. [2022-02-10 02:27:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 2418 states have (on average 1.5512820512820513) internal successors, (3751), 2418 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3751 transitions. [2022-02-10 02:27:02,844 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3751 transitions. Word has length 91 [2022-02-10 02:27:02,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:02,844 INFO L470 AbstractCegarLoop]: Abstraction has 2419 states and 3751 transitions. [2022-02-10 02:27:02,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.8461538461538463) internal successors, (200), 52 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3751 transitions. [2022-02-10 02:27:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:02,847 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:02,847 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:02,863 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 02:27:03,047 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,SelfDestructingSolverStorable42 [2022-02-10 02:27:03,048 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash 359609559, now seen corresponding path program 40 times [2022-02-10 02:27:03,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:03,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392615580] [2022-02-10 02:27:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:03,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:03,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:03,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392615580] [2022-02-10 02:27:03,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392615580] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:03,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130545002] [2022-02-10 02:27:03,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:27:03,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:03,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:03,290 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 02:27:03,291 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 02:27:03,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:27:03,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:03,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:27:03,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:03,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:04,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130545002] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:04,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:04,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 19] total 50 [2022-02-10 02:27:04,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940167396] [2022-02-10 02:27:04,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:04,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 02:27:04,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 02:27:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=2065, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:27:04,663 INFO L87 Difference]: Start difference. First operand 2419 states and 3751 transitions. Second operand has 50 states, 50 states have (on average 4.14) internal successors, (207), 50 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:12,377 INFO L93 Difference]: Finished difference Result 5629 states and 8388 transitions. [2022-02-10 02:27:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-02-10 02:27:12,377 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.14) internal successors, (207), 50 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:12,383 INFO L225 Difference]: With dead ends: 5629 [2022-02-10 02:27:12,383 INFO L226 Difference]: Without dead ends: 5617 [2022-02-10 02:27:12,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26398 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=14861, Invalid=58851, Unknown=0, NotChecked=0, Total=73712 [2022-02-10 02:27:12,393 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 613 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:12,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1760 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:27:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5617 states. [2022-02-10 02:27:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5617 to 2595. [2022-02-10 02:27:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2595 states, 2594 states have (on average 1.5547417116422513) internal successors, (4033), 2594 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:12,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 4033 transitions. [2022-02-10 02:27:12,431 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 4033 transitions. Word has length 91 [2022-02-10 02:27:12,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:12,431 INFO L470 AbstractCegarLoop]: Abstraction has 2595 states and 4033 transitions. [2022-02-10 02:27:12,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.14) internal successors, (207), 50 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:12,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 4033 transitions. [2022-02-10 02:27:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:12,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:12,433 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:12,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 02:27:12,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:12,634 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:12,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash -976871553, now seen corresponding path program 41 times [2022-02-10 02:27:12,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:12,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926984278] [2022-02-10 02:27:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:12,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:12,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:12,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926984278] [2022-02-10 02:27:12,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926984278] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:12,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790397149] [2022-02-10 02:27:12,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:27:12,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:12,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:12,901 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 02:27:12,924 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 02:27:12,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:27:12,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:12,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:27:12,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:13,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 14 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:14,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790397149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:14,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:14,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 19] total 52 [2022-02-10 02:27:14,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772112372] [2022-02-10 02:27:14,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:14,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-10 02:27:14,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:14,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-10 02:27:14,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2284, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 02:27:14,118 INFO L87 Difference]: Start difference. First operand 2595 states and 4033 transitions. Second operand has 52 states, 52 states have (on average 4.115384615384615) internal successors, (214), 52 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:19,873 INFO L93 Difference]: Finished difference Result 6560 states and 9783 transitions. [2022-02-10 02:27:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-02-10 02:27:19,874 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.115384615384615) internal successors, (214), 52 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:19,882 INFO L225 Difference]: With dead ends: 6560 [2022-02-10 02:27:19,882 INFO L226 Difference]: Without dead ends: 6493 [2022-02-10 02:27:19,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20616 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=12407, Invalid=47373, Unknown=0, NotChecked=0, Total=59780 [2022-02-10 02:27:19,890 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 987 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:19,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 1849 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:27:19,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2022-02-10 02:27:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 2770. [2022-02-10 02:27:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2769 states have (on average 1.5576020223907547) internal successors, (4313), 2769 states have internal predecessors, (4313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4313 transitions. [2022-02-10 02:27:19,933 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4313 transitions. Word has length 91 [2022-02-10 02:27:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:19,933 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 4313 transitions. [2022-02-10 02:27:19,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.115384615384615) internal successors, (214), 52 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4313 transitions. [2022-02-10 02:27:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:19,935 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:19,936 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:19,953 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 02:27:20,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:20,136 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2005186309, now seen corresponding path program 42 times [2022-02-10 02:27:20,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:20,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541566125] [2022-02-10 02:27:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:20,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:27:20,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:20,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541566125] [2022-02-10 02:27:20,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541566125] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:20,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197183652] [2022-02-10 02:27:20,359 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:27:20,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:20,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:20,361 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:27:20,364 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 02:27:20,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:27:20,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:20,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:27:20,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 47 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:20,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 35 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:21,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197183652] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:21,430 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:21,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 19] total 48 [2022-02-10 02:27:21,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110280716] [2022-02-10 02:27:21,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:21,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 02:27:21,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 02:27:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1874, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:27:21,431 INFO L87 Difference]: Start difference. First operand 2770 states and 4313 transitions. Second operand has 48 states, 48 states have (on average 4.104166666666667) internal successors, (197), 48 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:24,812 INFO L93 Difference]: Finished difference Result 4615 states and 6845 transitions. [2022-02-10 02:27:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-02-10 02:27:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.104166666666667) internal successors, (197), 48 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:24,819 INFO L225 Difference]: With dead ends: 4615 [2022-02-10 02:27:24,819 INFO L226 Difference]: Without dead ends: 4613 [2022-02-10 02:27:24,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8517 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5499, Invalid=21891, Unknown=0, NotChecked=0, Total=27390 [2022-02-10 02:27:24,825 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 898 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:24,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 2033 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:27:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4613 states. [2022-02-10 02:27:24,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4613 to 2768. [2022-02-10 02:27:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2767 states have (on average 1.5580050596313697) internal successors, (4311), 2767 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4311 transitions. [2022-02-10 02:27:24,875 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4311 transitions. Word has length 91 [2022-02-10 02:27:24,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:24,875 INFO L470 AbstractCegarLoop]: Abstraction has 2768 states and 4311 transitions. [2022-02-10 02:27:24,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.104166666666667) internal successors, (197), 48 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4311 transitions. [2022-02-10 02:27:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:24,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:24,879 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:24,906 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 02:27:25,103 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,SelfDestructingSolverStorable45 [2022-02-10 02:27:25,103 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:25,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2068320263, now seen corresponding path program 43 times [2022-02-10 02:27:25,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:25,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544425055] [2022-02-10 02:27:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:25,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:27:25,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:25,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544425055] [2022-02-10 02:27:25,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544425055] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:25,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022115098] [2022-02-10 02:27:25,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:27:25,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:25,338 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:27:25,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 02:27:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:25,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:27:25,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:25,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:27:26,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022115098] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:26,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:26,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 17] total 46 [2022-02-10 02:27:26,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139267364] [2022-02-10 02:27:26,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:26,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-10 02:27:26,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-10 02:27:26,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 02:27:26,366 INFO L87 Difference]: Start difference. First operand 2768 states and 4311 transitions. Second operand has 46 states, 46 states have (on average 4.3478260869565215) internal successors, (200), 46 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:30,348 INFO L93 Difference]: Finished difference Result 6205 states and 9212 transitions. [2022-02-10 02:27:30,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-10 02:27:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.3478260869565215) internal successors, (200), 46 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:30,356 INFO L225 Difference]: With dead ends: 6205 [2022-02-10 02:27:30,356 INFO L226 Difference]: Without dead ends: 6203 [2022-02-10 02:27:30,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8308 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5305, Invalid=22085, Unknown=0, NotChecked=0, Total=27390 [2022-02-10 02:27:30,360 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 899 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:30,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 2497 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:27:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2022-02-10 02:27:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 2893. [2022-02-10 02:27:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2892 states have (on average 1.5608575380359613) internal successors, (4514), 2892 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4514 transitions. [2022-02-10 02:27:30,401 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4514 transitions. Word has length 91 [2022-02-10 02:27:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:30,401 INFO L470 AbstractCegarLoop]: Abstraction has 2893 states and 4514 transitions. [2022-02-10 02:27:30,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.3478260869565215) internal successors, (200), 46 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4514 transitions. [2022-02-10 02:27:30,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:30,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:30,405 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:30,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 02:27:30,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-10 02:27:30,610 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:30,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1280210081, now seen corresponding path program 44 times [2022-02-10 02:27:30,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:30,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408008058] [2022-02-10 02:27:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:30,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 23 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:30,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:30,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408008058] [2022-02-10 02:27:30,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408008058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:30,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674044029] [2022-02-10 02:27:30,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:27:30,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:30,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:30,888 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:27:30,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 02:27:30,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:27:30,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:30,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:27:30,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 37 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:31,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:32,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674044029] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:32,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:32,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 19] total 53 [2022-02-10 02:27:32,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254478406] [2022-02-10 02:27:32,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:32,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-10 02:27:32,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-10 02:27:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2319, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:27:32,069 INFO L87 Difference]: Start difference. First operand 2893 states and 4514 transitions. Second operand has 53 states, 53 states have (on average 3.943396226415094) internal successors, (209), 53 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:36,868 INFO L93 Difference]: Finished difference Result 4925 states and 7378 transitions. [2022-02-10 02:27:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-02-10 02:27:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.943396226415094) internal successors, (209), 53 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:36,875 INFO L225 Difference]: With dead ends: 4925 [2022-02-10 02:27:36,875 INFO L226 Difference]: Without dead ends: 4914 [2022-02-10 02:27:36,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17132 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9788, Invalid=39274, Unknown=0, NotChecked=0, Total=49062 [2022-02-10 02:27:36,884 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 621 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:36,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 2300 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:27:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4914 states. [2022-02-10 02:27:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 2948. [2022-02-10 02:27:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2947 states have (on average 1.5629453681710215) internal successors, (4606), 2947 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 4606 transitions. [2022-02-10 02:27:36,936 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 4606 transitions. Word has length 91 [2022-02-10 02:27:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:36,936 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 4606 transitions. [2022-02-10 02:27:36,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.943396226415094) internal successors, (209), 53 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 4606 transitions. [2022-02-10 02:27:36,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:36,940 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:36,940 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:36,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 02:27:37,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-10 02:27:37,157 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1022323223, now seen corresponding path program 45 times [2022-02-10 02:27:37,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:37,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281240295] [2022-02-10 02:27:37,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:37,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:37,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:37,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281240295] [2022-02-10 02:27:37,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281240295] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:37,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925221983] [2022-02-10 02:27:37,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:27:37,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:37,419 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:27:37,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 02:27:37,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:27:37,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:37,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:27:37,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:37,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:38,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925221983] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:38,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:38,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 19] total 53 [2022-02-10 02:27:38,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426958018] [2022-02-10 02:27:38,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:38,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-10 02:27:38,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-10 02:27:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=2442, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:27:38,583 INFO L87 Difference]: Start difference. First operand 2948 states and 4606 transitions. Second operand has 53 states, 53 states have (on average 4.132075471698113) internal successors, (219), 53 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:42,925 INFO L93 Difference]: Finished difference Result 6691 states and 10111 transitions. [2022-02-10 02:27:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-02-10 02:27:42,925 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.132075471698113) internal successors, (219), 53 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:42,934 INFO L225 Difference]: With dead ends: 6691 [2022-02-10 02:27:42,934 INFO L226 Difference]: Without dead ends: 6597 [2022-02-10 02:27:42,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11469 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7513, Invalid=29929, Unknown=0, NotChecked=0, Total=37442 [2022-02-10 02:27:42,940 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 763 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 2026 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:42,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 1701 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2026 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:27:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6597 states. [2022-02-10 02:27:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 3048. [2022-02-10 02:27:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3047 states have (on average 1.5598949786675418) internal successors, (4753), 3047 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4753 transitions. [2022-02-10 02:27:42,985 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4753 transitions. Word has length 91 [2022-02-10 02:27:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:42,985 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 4753 transitions. [2022-02-10 02:27:42,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.132075471698113) internal successors, (219), 53 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4753 transitions. [2022-02-10 02:27:42,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:42,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:42,988 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:43,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-10 02:27:43,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:43,189 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:43,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1131006445, now seen corresponding path program 46 times [2022-02-10 02:27:43,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:43,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422328314] [2022-02-10 02:27:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:43,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 27 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:43,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:43,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422328314] [2022-02-10 02:27:43,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422328314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:43,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518789737] [2022-02-10 02:27:43,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:27:43,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:43,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:43,390 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:27:43,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 02:27:43,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:27:43,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:43,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:27:43,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:43,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:44,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518789737] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:44,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:44,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 19] total 51 [2022-02-10 02:27:44,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152311280] [2022-02-10 02:27:44,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:44,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-10 02:27:44,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-10 02:27:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2117, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:27:44,523 INFO L87 Difference]: Start difference. First operand 3048 states and 4753 transitions. Second operand has 51 states, 51 states have (on average 4.0) internal successors, (204), 51 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:47,501 INFO L93 Difference]: Finished difference Result 4702 states and 7033 transitions. [2022-02-10 02:27:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-10 02:27:47,502 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.0) internal successors, (204), 51 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:47,507 INFO L225 Difference]: With dead ends: 4702 [2022-02-10 02:27:47,507 INFO L226 Difference]: Without dead ends: 4700 [2022-02-10 02:27:47,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7340 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4649, Invalid=18607, Unknown=0, NotChecked=0, Total=23256 [2022-02-10 02:27:47,511 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 791 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:47,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 1709 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:27:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2022-02-10 02:27:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 3218. [2022-02-10 02:27:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 1.5582841156356855) internal successors, (5013), 3217 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5013 transitions. [2022-02-10 02:27:47,549 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5013 transitions. Word has length 91 [2022-02-10 02:27:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:47,549 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 5013 transitions. [2022-02-10 02:27:47,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.0) internal successors, (204), 51 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5013 transitions. [2022-02-10 02:27:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:47,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:47,553 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:47,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-10 02:27:47,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-10 02:27:47,753 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash -168003689, now seen corresponding path program 47 times [2022-02-10 02:27:47,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:47,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454682003] [2022-02-10 02:27:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:47,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:47,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:47,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454682003] [2022-02-10 02:27:47,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454682003] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:47,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542640385] [2022-02-10 02:27:47,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:27:47,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:48,000 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:27:48,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 02:27:48,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:27:48,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:27:48,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 24 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:48,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:49,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542640385] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:49,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:49,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 19] total 54 [2022-02-10 02:27:49,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637650703] [2022-02-10 02:27:49,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:49,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 02:27:49,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 02:27:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=2451, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:27:49,179 INFO L87 Difference]: Start difference. First operand 3218 states and 5013 transitions. Second operand has 54 states, 54 states have (on average 4.055555555555555) internal successors, (219), 54 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:55,030 INFO L93 Difference]: Finished difference Result 8168 states and 12221 transitions. [2022-02-10 02:27:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2022-02-10 02:27:55,030 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.055555555555555) internal successors, (219), 54 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:27:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:55,040 INFO L225 Difference]: With dead ends: 8168 [2022-02-10 02:27:55,040 INFO L226 Difference]: Without dead ends: 8138 [2022-02-10 02:27:55,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20663 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12339, Invalid=46953, Unknown=0, NotChecked=0, Total=59292 [2022-02-10 02:27:55,049 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 1111 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:55,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 1466 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:27:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8138 states. [2022-02-10 02:27:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8138 to 3696. [2022-02-10 02:27:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 1.5677943166441137) internal successors, (5793), 3695 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:55,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5793 transitions. [2022-02-10 02:27:55,113 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5793 transitions. Word has length 91 [2022-02-10 02:27:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:55,113 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 5793 transitions. [2022-02-10 02:27:55,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.055555555555555) internal successors, (219), 54 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:55,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5793 transitions. [2022-02-10 02:27:55,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:55,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:55,118 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:55,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-10 02:27:55,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:55,318 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:27:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:27:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1589206675, now seen corresponding path program 48 times [2022-02-10 02:27:55,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:27:55,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120636479] [2022-02-10 02:27:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:27:55,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:27:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:27:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 23 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:27:55,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:27:55,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120636479] [2022-02-10 02:27:55,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120636479] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:27:55,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655684482] [2022-02-10 02:27:55,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:27:55,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:27:55,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:27:55,505 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:27:55,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 02:27:55,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:27:55,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:27:55,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:27:55,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:27:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:55,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:27:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:27:56,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655684482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:27:56,522 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:27:56,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 17] total 48 [2022-02-10 02:27:56,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146166591] [2022-02-10 02:27:56,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:27:56,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 02:27:56,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:27:56,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 02:27:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1901, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:27:56,524 INFO L87 Difference]: Start difference. First operand 3696 states and 5793 transitions. Second operand has 48 states, 48 states have (on average 4.229166666666667) internal successors, (203), 48 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 02:27:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:27:59,718 INFO L93 Difference]: Finished difference Result 5933 states and 8854 transitions. [2022-02-10 02:27:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-10 02:27:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.229166666666667) internal successors, (203), 48 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 91 [2022-02-10 02:27:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:27:59,725 INFO L225 Difference]: With dead ends: 5933 [2022-02-10 02:27:59,725 INFO L226 Difference]: Without dead ends: 5931 [2022-02-10 02:27:59,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7823 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5075, Invalid=20685, Unknown=0, NotChecked=0, Total=25760 [2022-02-10 02:27:59,729 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 752 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:27:59,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1420 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:27:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5931 states. [2022-02-10 02:27:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5931 to 3322. [2022-02-10 02:27:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 1.560373381511593) internal successors, (5182), 3321 states have internal predecessors, (5182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:27:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 5182 transitions. [2022-02-10 02:27:59,774 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 5182 transitions. Word has length 91 [2022-02-10 02:27:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:27:59,774 INFO L470 AbstractCegarLoop]: Abstraction has 3322 states and 5182 transitions. [2022-02-10 02:27:59,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.229166666666667) internal successors, (203), 48 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 02:27:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 5182 transitions. [2022-02-10 02:27:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:27:59,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:27:59,779 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:27:59,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-02-10 02:28:00,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-02-10 02:28:00,002 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash 391604255, now seen corresponding path program 49 times [2022-02-10 02:28:00,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:00,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479336505] [2022-02-10 02:28:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:00,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:00,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:00,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479336505] [2022-02-10 02:28:00,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479336505] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:00,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4584442] [2022-02-10 02:28:00,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:28:00,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:00,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:00,269 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:00,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 02:28:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:00,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:28:00,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:00,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:01,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4584442] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:01,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:01,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 19] total 55 [2022-02-10 02:28:01,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689745883] [2022-02-10 02:28:01,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:01,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 02:28:01,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:01,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 02:28:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=2561, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:28:01,468 INFO L87 Difference]: Start difference. First operand 3322 states and 5182 transitions. Second operand has 55 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:28:06,527 INFO L93 Difference]: Finished difference Result 6781 states and 10058 transitions. [2022-02-10 02:28:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-10 02:28:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:28:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:28:06,535 INFO L225 Difference]: With dead ends: 6781 [2022-02-10 02:28:06,536 INFO L226 Difference]: Without dead ends: 6740 [2022-02-10 02:28:06,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16916 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10007, Invalid=38173, Unknown=0, NotChecked=0, Total=48180 [2022-02-10 02:28:06,542 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 780 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:28:06,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 2660 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:28:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2022-02-10 02:28:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 2765. [2022-02-10 02:28:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2765 states, 2764 states have (on average 1.5513748191027497) internal successors, (4288), 2764 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 4288 transitions. [2022-02-10 02:28:06,581 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 4288 transitions. Word has length 91 [2022-02-10 02:28:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:28:06,581 INFO L470 AbstractCegarLoop]: Abstraction has 2765 states and 4288 transitions. [2022-02-10 02:28:06,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 4288 transitions. [2022-02-10 02:28:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:28:06,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:28:06,583 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:28:06,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-10 02:28:06,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-10 02:28:06,784 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2001471423, now seen corresponding path program 50 times [2022-02-10 02:28:06,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:06,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797496234] [2022-02-10 02:28:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:06,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:07,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:07,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797496234] [2022-02-10 02:28:07,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797496234] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:07,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888547552] [2022-02-10 02:28:07,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:28:07,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:07,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:07,048 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:07,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 02:28:07,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:28:07,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:28:07,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:28:07,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:07,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:08,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888547552] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:08,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:08,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 19] total 59 [2022-02-10 02:28:08,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033704396] [2022-02-10 02:28:08,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:08,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-10 02:28:08,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-10 02:28:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=2953, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:28:08,375 INFO L87 Difference]: Start difference. First operand 2765 states and 4288 transitions. Second operand has 59 states, 59 states have (on average 3.7966101694915255) internal successors, (224), 59 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:28:12,175 INFO L93 Difference]: Finished difference Result 7264 states and 10952 transitions. [2022-02-10 02:28:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-10 02:28:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.7966101694915255) internal successors, (224), 59 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:28:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:28:12,184 INFO L225 Difference]: With dead ends: 7264 [2022-02-10 02:28:12,185 INFO L226 Difference]: Without dead ends: 7156 [2022-02-10 02:28:12,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12080 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7625, Invalid=28665, Unknown=0, NotChecked=0, Total=36290 [2022-02-10 02:28:12,190 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 935 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:28:12,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1743 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:28:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7156 states. [2022-02-10 02:28:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7156 to 3183. [2022-02-10 02:28:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 3182 states have (on average 1.5487115021998743) internal successors, (4928), 3182 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4928 transitions. [2022-02-10 02:28:12,234 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4928 transitions. Word has length 91 [2022-02-10 02:28:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:28:12,234 INFO L470 AbstractCegarLoop]: Abstraction has 3183 states and 4928 transitions. [2022-02-10 02:28:12,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.7966101694915255) internal successors, (224), 59 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4928 transitions. [2022-02-10 02:28:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-10 02:28:12,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:28:12,237 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2022-02-10 02:28:12,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-10 02:28:12,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:12,438 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:12,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1869664965, now seen corresponding path program 51 times [2022-02-10 02:28:12,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:12,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201621606] [2022-02-10 02:28:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:12,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:12,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:12,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201621606] [2022-02-10 02:28:12,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201621606] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:12,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236282167] [2022-02-10 02:28:12,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:28:12,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:12,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:12,685 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:12,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 02:28:12,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:28:12,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:28:12,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:28:12,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:13,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:13,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236282167] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:13,730 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:13,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 19] total 58 [2022-02-10 02:28:13,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077910218] [2022-02-10 02:28:13,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:13,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-10 02:28:13,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-10 02:28:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=2688, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:28:13,732 INFO L87 Difference]: Start difference. First operand 3183 states and 4928 transitions. Second operand has 58 states, 58 states have (on average 3.6379310344827585) internal successors, (211), 58 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:28:17,295 INFO L93 Difference]: Finished difference Result 5208 states and 8075 transitions. [2022-02-10 02:28:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-10 02:28:17,295 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.6379310344827585) internal successors, (211), 58 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-02-10 02:28:17,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:28:17,302 INFO L225 Difference]: With dead ends: 5208 [2022-02-10 02:28:17,302 INFO L226 Difference]: Without dead ends: 5206 [2022-02-10 02:28:17,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11744 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6427, Invalid=27245, Unknown=0, NotChecked=0, Total=33672 [2022-02-10 02:28:17,307 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 732 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:28:17,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1557 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:28:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2022-02-10 02:28:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 3572. [2022-02-10 02:28:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3571 states have (on average 1.5527863343601231) internal successors, (5545), 3571 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 5545 transitions. [2022-02-10 02:28:17,352 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 5545 transitions. Word has length 91 [2022-02-10 02:28:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:28:17,352 INFO L470 AbstractCegarLoop]: Abstraction has 3572 states and 5545 transitions. [2022-02-10 02:28:17,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.6379310344827585) internal successors, (211), 58 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 5545 transitions. [2022-02-10 02:28:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:28:17,358 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:28:17,358 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:28:17,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-10 02:28:17,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-10 02:28:17,579 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2132156671, now seen corresponding path program 52 times [2022-02-10 02:28:17,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:17,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645639972] [2022-02-10 02:28:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:17,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:17,683 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 02:28:17,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:17,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645639972] [2022-02-10 02:28:17,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645639972] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:17,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665641890] [2022-02-10 02:28:17,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:28:17,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:17,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:17,685 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:17,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 02:28:17,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:28:17,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:28:17,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 02:28:17,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:17,988 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 02:28:17,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 25 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:18,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665641890] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:18,744 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:18,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 20 [2022-02-10 02:28:18,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950625423] [2022-02-10 02:28:18,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:18,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:28:18,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:28:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:28:18,745 INFO L87 Difference]: Start difference. First operand 3572 states and 5545 transitions. Second operand has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:28:18,913 INFO L93 Difference]: Finished difference Result 5267 states and 8207 transitions. [2022-02-10 02:28:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:28:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have 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 02:28:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:28:18,921 INFO L225 Difference]: With dead ends: 5267 [2022-02-10 02:28:18,921 INFO L226 Difference]: Without dead ends: 5224 [2022-02-10 02:28:18,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 178 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:28:18,922 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 352 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:28:18,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1504 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:28:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2022-02-10 02:28:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 4622. [2022-02-10 02:28:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 4621 states have (on average 1.5706557022289547) internal successors, (7258), 4621 states have internal predecessors, (7258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 7258 transitions. [2022-02-10 02:28:18,971 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 7258 transitions. Word has length 93 [2022-02-10 02:28:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:28:18,971 INFO L470 AbstractCegarLoop]: Abstraction has 4622 states and 7258 transitions. [2022-02-10 02:28:18,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 7258 transitions. [2022-02-10 02:28:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:28:18,978 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:28:18,979 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:28:19,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-10 02:28:19,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-10 02:28:19,203 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:19,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:19,203 INFO L85 PathProgramCache]: Analyzing trace with hash 547687173, now seen corresponding path program 53 times [2022-02-10 02:28:19,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:19,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680590383] [2022-02-10 02:28:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:19,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:19,499 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 02:28:19,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:19,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680590383] [2022-02-10 02:28:19,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680590383] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:19,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856255061] [2022-02-10 02:28:19,500 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:28:19,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:19,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:19,501 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:19,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 02:28:19,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:28:19,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:28:19,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:28:19,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:20,029 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 02:28:20,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 34 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:22,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856255061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:22,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:22,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 52 [2022-02-10 02:28:22,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82812989] [2022-02-10 02:28:22,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:22,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-10 02:28:22,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:22,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-10 02:28:22,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2304, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 02:28:22,251 INFO L87 Difference]: Start difference. First operand 4622 states and 7258 transitions. Second operand has 52 states, 52 states have (on average 3.4423076923076925) internal successors, (179), 52 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 02:28:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:28:29,338 INFO L93 Difference]: Finished difference Result 6644 states and 10131 transitions. [2022-02-10 02:28:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-02-10 02:28:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.4423076923076925) internal successors, (179), 52 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 93 [2022-02-10 02:28:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:28:29,346 INFO L225 Difference]: With dead ends: 6644 [2022-02-10 02:28:29,346 INFO L226 Difference]: Without dead ends: 6635 [2022-02-10 02:28:29,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 154 SyntacticMatches, 3 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15706 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=5114, Invalid=40468, Unknown=0, NotChecked=0, Total=45582 [2022-02-10 02:28:29,352 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 597 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 3189 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:28:29,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 3267 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3189 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:28:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2022-02-10 02:28:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 4786. [2022-02-10 02:28:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4786 states, 4785 states have (on average 1.5774294670846396) internal successors, (7548), 4785 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 7548 transitions. [2022-02-10 02:28:29,404 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 7548 transitions. Word has length 93 [2022-02-10 02:28:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:28:29,404 INFO L470 AbstractCegarLoop]: Abstraction has 4786 states and 7548 transitions. [2022-02-10 02:28:29,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.4423076923076925) internal successors, (179), 52 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 02:28:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 7548 transitions. [2022-02-10 02:28:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:28:29,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:28:29,409 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:28:29,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-10 02:28:29,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:29,609 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:29,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1472322525, now seen corresponding path program 54 times [2022-02-10 02:28:29,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:29,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760925814] [2022-02-10 02:28:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:29,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:29,950 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 02:28:29,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:29,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760925814] [2022-02-10 02:28:29,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760925814] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:29,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172985025] [2022-02-10 02:28:29,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:28:29,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:29,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:29,952 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:29,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 02:28:30,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:28:30,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:28:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:28:30,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:30,488 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 02:28:30,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 18 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:31,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172985025] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:31,939 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:31,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 23] total 56 [2022-02-10 02:28:31,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130812699] [2022-02-10 02:28:31,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:31,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-10 02:28:31,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-10 02:28:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2697, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:28:31,940 INFO L87 Difference]: Start difference. First operand 4786 states and 7548 transitions. Second operand has 56 states, 56 states have (on average 3.4107142857142856) internal successors, (191), 56 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:28:42,789 INFO L93 Difference]: Finished difference Result 9155 states and 13600 transitions. [2022-02-10 02:28:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2022-02-10 02:28:42,789 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.4107142857142856) internal successors, (191), 56 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have 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 02:28:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:28:42,800 INFO L225 Difference]: With dead ends: 9155 [2022-02-10 02:28:42,801 INFO L226 Difference]: Without dead ends: 9112 [2022-02-10 02:28:42,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39774 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=11593, Invalid=87947, Unknown=0, NotChecked=0, Total=99540 [2022-02-10 02:28:42,814 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 1386 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 4945 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 5334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 4945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:28:42,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 2856 Invalid, 5334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 4945 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-10 02:28:42,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2022-02-10 02:28:42,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 5019. [2022-02-10 02:28:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5019 states, 5018 states have (on average 1.5781187724192907) internal successors, (7919), 5018 states have internal predecessors, (7919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5019 states to 5019 states and 7919 transitions. [2022-02-10 02:28:42,881 INFO L78 Accepts]: Start accepts. Automaton has 5019 states and 7919 transitions. Word has length 93 [2022-02-10 02:28:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:28:42,881 INFO L470 AbstractCegarLoop]: Abstraction has 5019 states and 7919 transitions. [2022-02-10 02:28:42,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.4107142857142856) internal successors, (191), 56 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5019 states and 7919 transitions. [2022-02-10 02:28:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:28:42,886 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:28:42,886 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:28:42,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-10 02:28:43,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:43,087 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1065434407, now seen corresponding path program 55 times [2022-02-10 02:28:43,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:43,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053218609] [2022-02-10 02:28:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:43,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:43,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:43,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053218609] [2022-02-10 02:28:43,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053218609] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:43,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819113060] [2022-02-10 02:28:43,368 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:28:43,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:43,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:43,370 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:43,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 02:28:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:43,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:28:43,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:43,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:45,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819113060] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:45,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:45,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 21] total 50 [2022-02-10 02:28:45,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197086654] [2022-02-10 02:28:45,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:45,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-10 02:28:45,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-10 02:28:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=2085, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:28:45,246 INFO L87 Difference]: Start difference. First operand 5019 states and 7919 transitions. Second operand has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:28:49,888 INFO L93 Difference]: Finished difference Result 7960 states and 12411 transitions. [2022-02-10 02:28:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-10 02:28:49,889 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-10 02:28:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:28:49,898 INFO L225 Difference]: With dead ends: 7960 [2022-02-10 02:28:49,898 INFO L226 Difference]: Without dead ends: 7957 [2022-02-10 02:28:49,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 157 SyntacticMatches, 2 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12547 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4444, Invalid=31466, Unknown=0, NotChecked=0, Total=35910 [2022-02-10 02:28:49,903 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 674 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 3164 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 3164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:28:49,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1909 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 3164 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:28:49,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7957 states. [2022-02-10 02:28:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7957 to 4796. [2022-02-10 02:28:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 1.5770594369134514) internal successors, (7562), 4795 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 7562 transitions. [2022-02-10 02:28:49,964 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 7562 transitions. Word has length 93 [2022-02-10 02:28:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:28:49,964 INFO L470 AbstractCegarLoop]: Abstraction has 4796 states and 7562 transitions. [2022-02-10 02:28:49,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:28:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 7562 transitions. [2022-02-10 02:28:49,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:28:49,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:28:49,969 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:28:49,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-10 02:28:50,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:50,169 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:28:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:28:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash 437935925, now seen corresponding path program 56 times [2022-02-10 02:28:50,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:28:50,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949174254] [2022-02-10 02:28:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:28:50,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:28:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:28:50,479 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 02:28:50,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:28:50,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949174254] [2022-02-10 02:28:50,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949174254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:28:50,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167297352] [2022-02-10 02:28:50,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:28:50,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:28:50,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:28:50,483 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:28:50,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 02:28:50,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:28:50,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:28:50,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:28:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:28:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 5 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:51,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:28:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:28:52,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167297352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:28:52,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:28:52,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 57 [2022-02-10 02:28:52,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245006132] [2022-02-10 02:28:52,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:28:52,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-10 02:28:52,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:28:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-10 02:28:52,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2788, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:28:52,349 INFO L87 Difference]: Start difference. First operand 4796 states and 7562 transitions. Second operand has 57 states, 57 states have (on average 3.43859649122807) internal successors, (196), 57 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:29:02,538 INFO L93 Difference]: Finished difference Result 13284 states and 19923 transitions. [2022-02-10 02:29:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2022-02-10 02:29:02,538 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.43859649122807) internal successors, (196), 57 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have 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 02:29:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:29:02,557 INFO L225 Difference]: With dead ends: 13284 [2022-02-10 02:29:02,557 INFO L226 Difference]: Without dead ends: 13229 [2022-02-10 02:29:02,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24503 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=10379, Invalid=52371, Unknown=0, NotChecked=0, Total=62750 [2022-02-10 02:29:02,566 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 1122 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 2844 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:29:02,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1122 Valid, 2028 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2844 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:29:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2022-02-10 02:29:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 5689. [2022-02-10 02:29:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5689 states, 5688 states have (on average 1.5873769338959212) internal successors, (9029), 5688 states have internal predecessors, (9029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 9029 transitions. [2022-02-10 02:29:02,658 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 9029 transitions. Word has length 93 [2022-02-10 02:29:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:29:02,658 INFO L470 AbstractCegarLoop]: Abstraction has 5689 states and 9029 transitions. [2022-02-10 02:29:02,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.43859649122807) internal successors, (196), 57 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 9029 transitions. [2022-02-10 02:29:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:29:02,663 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:29:02,663 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:29:02,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-10 02:29:02,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-10 02:29:02,864 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:29:02,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:29:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2099821007, now seen corresponding path program 57 times [2022-02-10 02:29:02,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:29:02,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238109625] [2022-02-10 02:29:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:29:02,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:29:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:29:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:03,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:29:03,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238109625] [2022-02-10 02:29:03,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238109625] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:29:03,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053967114] [2022-02-10 02:29:03,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:29:03,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:03,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:29:03,112 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:29:03,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 02:29:03,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:29:03,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:29:03,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:29:03,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:29:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 26 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:03,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:29:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 31 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:04,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053967114] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:29:04,939 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:29:04,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 55 [2022-02-10 02:29:04,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306467224] [2022-02-10 02:29:04,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:29:04,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 02:29:04,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:29:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 02:29:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2533, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:29:04,941 INFO L87 Difference]: Start difference. First operand 5689 states and 9029 transitions. Second operand has 55 states, 55 states have (on average 3.2363636363636363) internal successors, (178), 55 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:29:10,227 INFO L93 Difference]: Finished difference Result 9470 states and 14849 transitions. [2022-02-10 02:29:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-10 02:29:10,228 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.2363636363636363) internal successors, (178), 55 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have 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 02:29:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:29:10,239 INFO L225 Difference]: With dead ends: 9470 [2022-02-10 02:29:10,239 INFO L226 Difference]: Without dead ends: 9467 [2022-02-10 02:29:10,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9947 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4677, Invalid=25425, Unknown=0, NotChecked=0, Total=30102 [2022-02-10 02:29:10,243 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 657 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:29:10,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 1447 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:29:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2022-02-10 02:29:10,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 4941. [2022-02-10 02:29:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4941 states, 4940 states have (on average 1.5809716599190284) internal successors, (7810), 4940 states have internal predecessors, (7810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4941 states to 4941 states and 7810 transitions. [2022-02-10 02:29:10,319 INFO L78 Accepts]: Start accepts. Automaton has 4941 states and 7810 transitions. Word has length 93 [2022-02-10 02:29:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:29:10,319 INFO L470 AbstractCegarLoop]: Abstraction has 4941 states and 7810 transitions. [2022-02-10 02:29:10,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.2363636363636363) internal successors, (178), 55 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4941 states and 7810 transitions. [2022-02-10 02:29:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:29:10,324 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:29:10,324 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:29:10,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-10 02:29:10,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-02-10 02:29:10,526 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:29:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:29:10,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1914858621, now seen corresponding path program 58 times [2022-02-10 02:29:10,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:29:10,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701200828] [2022-02-10 02:29:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:29:10,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:29:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:29:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 5 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:10,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:29:10,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701200828] [2022-02-10 02:29:10,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701200828] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:29:10,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727722732] [2022-02-10 02:29:10,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:29:10,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:10,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:29:10,785 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:29:10,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 02:29:10,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:29:10,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:29:10,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:29:10,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:29:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 5 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:11,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:29:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:12,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727722732] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:29:12,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:29:12,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 21] total 56 [2022-02-10 02:29:12,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973272735] [2022-02-10 02:29:12,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:29:12,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-10 02:29:12,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:29:12,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-10 02:29:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2735, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:29:12,280 INFO L87 Difference]: Start difference. First operand 4941 states and 7810 transitions. Second operand has 56 states, 56 states have (on average 3.5) internal successors, (196), 56 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:29:19,799 INFO L93 Difference]: Finished difference Result 11225 states and 16742 transitions. [2022-02-10 02:29:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-02-10 02:29:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.5) internal successors, (196), 56 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have 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 02:29:19,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:29:19,821 INFO L225 Difference]: With dead ends: 11225 [2022-02-10 02:29:19,822 INFO L226 Difference]: Without dead ends: 11142 [2022-02-10 02:29:19,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19277 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=7996, Invalid=44674, Unknown=0, NotChecked=0, Total=52670 [2022-02-10 02:29:19,832 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 779 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:29:19,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 3299 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:29:19,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11142 states. [2022-02-10 02:29:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11142 to 5584. [2022-02-10 02:29:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 1.5821243059287122) internal successors, (8833), 5583 states have internal predecessors, (8833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 8833 transitions. [2022-02-10 02:29:19,946 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 8833 transitions. Word has length 93 [2022-02-10 02:29:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:29:19,946 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 8833 transitions. [2022-02-10 02:29:19,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.5) internal successors, (196), 56 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 8833 transitions. [2022-02-10 02:29:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:29:19,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:29:19,953 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:29:19,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-10 02:29:20,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-02-10 02:29:20,154 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:29:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:29:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2128546383, now seen corresponding path program 59 times [2022-02-10 02:29:20,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:29:20,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143146801] [2022-02-10 02:29:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:29:20,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:29:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:29:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:20,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:29:20,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143146801] [2022-02-10 02:29:20,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143146801] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:29:20,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69384167] [2022-02-10 02:29:20,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:29:20,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:29:20,455 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:29:20,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 02:29:20,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:29:20,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:29:20,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:29:20,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:29:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 23 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:29:21,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:29:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:22,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69384167] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:29:22,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:29:22,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 24] total 60 [2022-02-10 02:29:22,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475898422] [2022-02-10 02:29:22,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:29:22,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-10 02:29:22,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:29:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-10 02:29:22,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2999, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:29:22,598 INFO L87 Difference]: Start difference. First operand 5584 states and 8833 transitions. Second operand has 60 states, 60 states have (on average 3.05) internal successors, (183), 60 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:29:32,690 INFO L93 Difference]: Finished difference Result 12591 states and 19916 transitions. [2022-02-10 02:29:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-02-10 02:29:32,691 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.05) internal successors, (183), 60 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have 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 02:29:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:29:32,710 INFO L225 Difference]: With dead ends: 12591 [2022-02-10 02:29:32,710 INFO L226 Difference]: Without dead ends: 12587 [2022-02-10 02:29:32,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17469 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=7646, Invalid=38364, Unknown=0, NotChecked=0, Total=46010 [2022-02-10 02:29:32,716 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 1115 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:29:32,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 1766 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:29:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12587 states. [2022-02-10 02:29:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12587 to 6124. [2022-02-10 02:29:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6123 states have (on average 1.5915400947248082) internal successors, (9745), 6123 states have internal predecessors, (9745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 9745 transitions. [2022-02-10 02:29:32,838 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 9745 transitions. Word has length 93 [2022-02-10 02:29:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:29:32,838 INFO L470 AbstractCegarLoop]: Abstraction has 6124 states and 9745 transitions. [2022-02-10 02:29:32,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.05) internal successors, (183), 60 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 9745 transitions. [2022-02-10 02:29:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:29:32,845 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:29:32,845 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:29:32,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-10 02:29:33,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:33,046 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:29:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:29:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2004254101, now seen corresponding path program 60 times [2022-02-10 02:29:33,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:29:33,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625097036] [2022-02-10 02:29:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:29:33,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:29:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:29:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:33,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:29:33,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625097036] [2022-02-10 02:29:33,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625097036] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:29:33,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351293597] [2022-02-10 02:29:33,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:29:33,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:33,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:29:33,325 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:29:33,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 02:29:33,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:29:33,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:29:33,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:29:33,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:29:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:33,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:29:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 7 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:35,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351293597] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:29:35,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:29:35,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 57 [2022-02-10 02:29:35,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041805609] [2022-02-10 02:29:35,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:29:35,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-10 02:29:35,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:29:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-10 02:29:35,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2769, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:29:35,378 INFO L87 Difference]: Start difference. First operand 6124 states and 9745 transitions. Second operand has 57 states, 57 states have (on average 3.3157894736842106) internal successors, (189), 57 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:46,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:29:46,010 INFO L93 Difference]: Finished difference Result 13825 states and 21251 transitions. [2022-02-10 02:29:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2022-02-10 02:29:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.3157894736842106) internal successors, (189), 57 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 02:29:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:29:46,028 INFO L225 Difference]: With dead ends: 13825 [2022-02-10 02:29:46,029 INFO L226 Difference]: Without dead ends: 13782 [2022-02-10 02:29:46,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18823 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=8217, Invalid=43995, Unknown=0, NotChecked=0, Total=52212 [2022-02-10 02:29:46,036 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 627 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 3081 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:29:46,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 2276 Invalid, 3337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3081 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:29:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13782 states. [2022-02-10 02:29:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13782 to 6646. [2022-02-10 02:29:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6646 states, 6645 states have (on average 1.5912716328066214) internal successors, (10574), 6645 states have internal predecessors, (10574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6646 states to 6646 states and 10574 transitions. [2022-02-10 02:29:46,203 INFO L78 Accepts]: Start accepts. Automaton has 6646 states and 10574 transitions. Word has length 93 [2022-02-10 02:29:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:29:46,204 INFO L470 AbstractCegarLoop]: Abstraction has 6646 states and 10574 transitions. [2022-02-10 02:29:46,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.3157894736842106) internal successors, (189), 57 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:46,204 INFO L276 IsEmpty]: Start isEmpty. Operand 6646 states and 10574 transitions. [2022-02-10 02:29:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 02:29:46,211 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:29:46,211 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-10 02:29:46,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-10 02:29:46,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:46,412 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:29:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:29:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 490534877, now seen corresponding path program 61 times [2022-02-10 02:29:46,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:29:46,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594209049] [2022-02-10 02:29:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:29:46,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:29:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:29:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:46,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:29:46,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594209049] [2022-02-10 02:29:46,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594209049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:29:46,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517238608] [2022-02-10 02:29:46,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:29:46,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:46,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:29:46,674 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:29:46,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 02:29:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:29:46,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:29:46,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:29:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:47,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:29:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:29:47,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517238608] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:29:47,963 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:29:47,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 57 [2022-02-10 02:29:47,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516627345] [2022-02-10 02:29:47,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:29:47,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-10 02:29:47,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:29:47,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-10 02:29:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=2842, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:29:47,964 INFO L87 Difference]: Start difference. First operand 6646 states and 10574 transitions. Second operand has 57 states, 57 states have (on average 3.508771929824561) internal successors, (200), 57 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:29:54,200 INFO L93 Difference]: Finished difference Result 15364 states and 23423 transitions. [2022-02-10 02:29:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-02-10 02:29:54,200 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.508771929824561) internal successors, (200), 57 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have 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 02:29:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:29:54,226 INFO L225 Difference]: With dead ends: 15364 [2022-02-10 02:29:54,226 INFO L226 Difference]: Without dead ends: 15182 [2022-02-10 02:29:54,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18061 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8567, Invalid=40495, Unknown=0, NotChecked=0, Total=49062 [2022-02-10 02:29:54,234 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 858 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:29:54,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2938 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:29:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15182 states. [2022-02-10 02:29:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15182 to 7520. [2022-02-10 02:29:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7519 states have (on average 1.592100013299641) internal successors, (11971), 7519 states have internal predecessors, (11971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11971 transitions. [2022-02-10 02:29:54,388 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11971 transitions. Word has length 93 [2022-02-10 02:29:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:29:54,388 INFO L470 AbstractCegarLoop]: Abstraction has 7520 states and 11971 transitions. [2022-02-10 02:29:54,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.508771929824561) internal successors, (200), 57 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:29:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11971 transitions. [2022-02-10 02:29:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-10 02:29:54,398 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:29:54,398 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2022-02-10 02:29:54,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-10 02:29:54,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-10 02:29:54,599 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:29:54,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:29:54,599 INFO L85 PathProgramCache]: Analyzing trace with hash -179694325, now seen corresponding path program 62 times [2022-02-10 02:29:54,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:29:54,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728497270] [2022-02-10 02:29:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:29:54,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:29:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:29:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:29:54,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:29:54,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728497270] [2022-02-10 02:29:54,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728497270] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:29:54,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843912792] [2022-02-10 02:29:54,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:29:54,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:29:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:29:54,873 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:29:54,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 02:29:54,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:29:54,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:29:54,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:29:54,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:29:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:29:55,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:29:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:29:57,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843912792] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:29:57,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:29:57,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 55 [2022-02-10 02:29:57,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195130391] [2022-02-10 02:29:57,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:29:57,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 02:29:57,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:29:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 02:29:57,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2547, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:29:57,330 INFO L87 Difference]: Start difference. First operand 7520 states and 11971 transitions. Second operand has 55 states, 55 states have (on average 3.3454545454545452) internal successors, (184), 55 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:30:03,964 INFO L93 Difference]: Finished difference Result 13250 states and 20500 transitions. [2022-02-10 02:30:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-10 02:30:03,965 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.3454545454545452) internal successors, (184), 55 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-02-10 02:30:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:30:03,985 INFO L225 Difference]: With dead ends: 13250 [2022-02-10 02:30:03,985 INFO L226 Difference]: Without dead ends: 13244 [2022-02-10 02:30:03,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7151 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3239, Invalid=18223, Unknown=0, NotChecked=0, Total=21462 [2022-02-10 02:30:03,988 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 696 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:30:03,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2043 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:30:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13244 states. [2022-02-10 02:30:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13244 to 8349. [2022-02-10 02:30:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8349 states, 8348 states have (on average 1.5972688068998562) internal successors, (13334), 8348 states have internal predecessors, (13334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8349 states to 8349 states and 13334 transitions. [2022-02-10 02:30:04,120 INFO L78 Accepts]: Start accepts. Automaton has 8349 states and 13334 transitions. Word has length 95 [2022-02-10 02:30:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:30:04,120 INFO L470 AbstractCegarLoop]: Abstraction has 8349 states and 13334 transitions. [2022-02-10 02:30:04,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.3454545454545452) internal successors, (184), 55 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8349 states and 13334 transitions. [2022-02-10 02:30:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-10 02:30:04,130 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:30:04,130 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2022-02-10 02:30:04,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-10 02:30:04,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-10 02:30:04,330 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:30:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:30:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash -17527513, now seen corresponding path program 63 times [2022-02-10 02:30:04,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:30:04,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738736601] [2022-02-10 02:30:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:30:04,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:30:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:30:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 1 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:30:04,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:30:04,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738736601] [2022-02-10 02:30:04,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738736601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:30:04,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377018309] [2022-02-10 02:30:04,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:30:04,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:30:04,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:30:04,657 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:30:04,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 02:30:04,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:30:04,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:30:04,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:30:04,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:30:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 1 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:30:05,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:30:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:07,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377018309] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:30:07,341 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:30:07,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 24] total 61 [2022-02-10 02:30:07,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524229104] [2022-02-10 02:30:07,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:30:07,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 02:30:07,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:30:07,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 02:30:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=3175, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:30:07,342 INFO L87 Difference]: Start difference. First operand 8349 states and 13334 transitions. Second operand has 61 states, 61 states have (on average 3.2459016393442623) internal successors, (198), 61 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:22,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:30:22,846 INFO L93 Difference]: Finished difference Result 15367 states and 23529 transitions. [2022-02-10 02:30:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-02-10 02:30:22,847 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.2459016393442623) internal successors, (198), 61 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-02-10 02:30:22,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:30:22,868 INFO L225 Difference]: With dead ends: 15367 [2022-02-10 02:30:22,868 INFO L226 Difference]: Without dead ends: 15319 [2022-02-10 02:30:22,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24624 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=10248, Invalid=52502, Unknown=0, NotChecked=0, Total=62750 [2022-02-10 02:30:22,877 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 651 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 3040 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 3566 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 3040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:30:22,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 3566 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 3040 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 02:30:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15319 states. [2022-02-10 02:30:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15319 to 8550. [2022-02-10 02:30:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8550 states, 8549 states have (on average 1.5984325652123055) internal successors, (13665), 8549 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8550 states to 8550 states and 13665 transitions. [2022-02-10 02:30:23,006 INFO L78 Accepts]: Start accepts. Automaton has 8550 states and 13665 transitions. Word has length 95 [2022-02-10 02:30:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:30:23,006 INFO L470 AbstractCegarLoop]: Abstraction has 8550 states and 13665 transitions. [2022-02-10 02:30:23,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.2459016393442623) internal successors, (198), 61 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8550 states and 13665 transitions. [2022-02-10 02:30:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:30:23,016 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:30:23,016 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:30:23,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-10 02:30:23,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:30:23,217 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:30:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:30:23,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1242453121, now seen corresponding path program 64 times [2022-02-10 02:30:23,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:30:23,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215464628] [2022-02-10 02:30:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:30:23,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:30:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:30:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 38 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:23,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:30:23,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215464628] [2022-02-10 02:30:23,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215464628] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:30:23,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3441479] [2022-02-10 02:30:23,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:30:23,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:30:23,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:30:23,531 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:30:23,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 02:30:23,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:30:23,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:30:23,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:30:23,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:30:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:23,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:30:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:25,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3441479] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:30:25,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:30:25,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 21] total 55 [2022-02-10 02:30:25,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941749555] [2022-02-10 02:30:25,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:30:25,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 02:30:25,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:30:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 02:30:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=2556, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:30:25,047 INFO L87 Difference]: Start difference. First operand 8550 states and 13665 transitions. Second operand has 55 states, 55 states have (on average 3.963636363636364) internal successors, (218), 55 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:30:30,052 INFO L93 Difference]: Finished difference Result 16196 states and 25312 transitions. [2022-02-10 02:30:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-02-10 02:30:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.963636363636364) internal successors, (218), 55 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:30:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:30:30,074 INFO L225 Difference]: With dead ends: 16196 [2022-02-10 02:30:30,075 INFO L226 Difference]: Without dead ends: 16171 [2022-02-10 02:30:30,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22196 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=14875, Invalid=49387, Unknown=0, NotChecked=0, Total=64262 [2022-02-10 02:30:30,083 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 679 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:30:30,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 2011 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:30:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16171 states. [2022-02-10 02:30:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16171 to 9120. [2022-02-10 02:30:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9120 states, 9119 states have (on average 1.6016010527470117) internal successors, (14605), 9119 states have internal predecessors, (14605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9120 states to 9120 states and 14605 transitions. [2022-02-10 02:30:30,216 INFO L78 Accepts]: Start accepts. Automaton has 9120 states and 14605 transitions. Word has length 98 [2022-02-10 02:30:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:30:30,216 INFO L470 AbstractCegarLoop]: Abstraction has 9120 states and 14605 transitions. [2022-02-10 02:30:30,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.963636363636364) internal successors, (218), 55 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9120 states and 14605 transitions. [2022-02-10 02:30:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:30:30,227 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:30:30,228 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:30:30,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-10 02:30:30,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-10 02:30:30,428 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:30:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:30:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1698262913, now seen corresponding path program 65 times [2022-02-10 02:30:30,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:30:30,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481904824] [2022-02-10 02:30:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:30:30,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:30:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:30:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 60 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:30,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:30:30,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481904824] [2022-02-10 02:30:30,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481904824] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:30:30,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766827608] [2022-02-10 02:30:30,734 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:30:30,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:30:30,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:30:30,735 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:30:30,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 02:30:30,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:30:30,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:30:30,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 02:30:30,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:30:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 81 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:31,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:30:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:31,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766827608] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:30:31,848 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:30:31,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 22] total 54 [2022-02-10 02:30:31,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438737293] [2022-02-10 02:30:31,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:30:31,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 02:30:31,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:30:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 02:30:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2432, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:30:31,850 INFO L87 Difference]: Start difference. First operand 9120 states and 14605 transitions. Second operand has 54 states, 54 states have (on average 3.2962962962962963) internal successors, (178), 54 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:30:39,939 INFO L93 Difference]: Finished difference Result 20050 states and 32036 transitions. [2022-02-10 02:30:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2022-02-10 02:30:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.2962962962962963) internal successors, (178), 54 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:30:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:30:39,969 INFO L225 Difference]: With dead ends: 20050 [2022-02-10 02:30:39,969 INFO L226 Difference]: Without dead ends: 20049 [2022-02-10 02:30:39,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36464 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=18034, Invalid=82138, Unknown=0, NotChecked=0, Total=100172 [2022-02-10 02:30:39,984 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 1152 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:30:39,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 1839 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:30:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20049 states. [2022-02-10 02:30:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20049 to 9277. [2022-02-10 02:30:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 9276 states have (on average 1.6033850797757654) internal successors, (14873), 9276 states have internal predecessors, (14873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 14873 transitions. [2022-02-10 02:30:40,179 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 14873 transitions. Word has length 98 [2022-02-10 02:30:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:30:40,179 INFO L470 AbstractCegarLoop]: Abstraction has 9277 states and 14873 transitions. [2022-02-10 02:30:40,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.2962962962962963) internal successors, (178), 54 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 14873 transitions. [2022-02-10 02:30:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:30:40,191 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:30:40,191 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:30:40,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-10 02:30:40,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-10 02:30:40,391 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:30:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:30:40,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1536096101, now seen corresponding path program 66 times [2022-02-10 02:30:40,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:30:40,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778605759] [2022-02-10 02:30:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:30:40,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:30:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:30:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:40,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:30:40,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778605759] [2022-02-10 02:30:40,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778605759] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:30:40,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322824725] [2022-02-10 02:30:40,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:30:40,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:30:40,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:30:40,661 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:30:40,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 02:30:40,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:30:40,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:30:40,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:30:40,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:30:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:41,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:30:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 38 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:41,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322824725] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:30:41,717 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:30:41,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 22] total 57 [2022-02-10 02:30:41,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919869492] [2022-02-10 02:30:41,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:30:41,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-10 02:30:41,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:30:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-10 02:30:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=2694, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:30:41,719 INFO L87 Difference]: Start difference. First operand 9277 states and 14873 transitions. Second operand has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:30:54,029 INFO L93 Difference]: Finished difference Result 15407 states and 23968 transitions. [2022-02-10 02:30:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 398 states. [2022-02-10 02:30:54,029 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:30:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:30:54,052 INFO L225 Difference]: With dead ends: 15407 [2022-02-10 02:30:54,052 INFO L226 Difference]: Without dead ends: 15384 [2022-02-10 02:30:54,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73679 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=30507, Invalid=159153, Unknown=0, NotChecked=0, Total=189660 [2022-02-10 02:30:54,076 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1534 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 3566 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 3566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:30:54,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 2206 Invalid, 3963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 3566 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 02:30:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15384 states. [2022-02-10 02:30:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15384 to 9295. [2022-02-10 02:30:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9295 states, 9294 states have (on average 1.6034000430385196) internal successors, (14902), 9294 states have internal predecessors, (14902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 14902 transitions. [2022-02-10 02:30:54,209 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 14902 transitions. Word has length 98 [2022-02-10 02:30:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:30:54,209 INFO L470 AbstractCegarLoop]: Abstraction has 9295 states and 14902 transitions. [2022-02-10 02:30:54,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:30:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 14902 transitions. [2022-02-10 02:30:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:30:54,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:30:54,219 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:30:54,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-10 02:30:54,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-10 02:30:54,420 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:30:54,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:30:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1518778025, now seen corresponding path program 67 times [2022-02-10 02:30:54,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:30:54,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686985691] [2022-02-10 02:30:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:30:54,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:30:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:30:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 40 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:54,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:30:54,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686985691] [2022-02-10 02:30:54,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686985691] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:30:54,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27579331] [2022-02-10 02:30:54,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:30:54,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:30:54,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:30:54,752 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:30:54,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 02:30:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:30:54,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:30:54,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:30:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:55,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:30:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:30:56,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27579331] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:30:56,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:30:56,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 22] total 58 [2022-02-10 02:30:56,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184800642] [2022-02-10 02:30:56,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:30:56,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-10 02:30:56,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:30:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-10 02:30:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=2836, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:30:56,022 INFO L87 Difference]: Start difference. First operand 9295 states and 14902 transitions. Second operand has 58 states, 58 states have (on average 3.793103448275862) internal successors, (220), 58 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:04,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:31:04,983 INFO L93 Difference]: Finished difference Result 16620 states and 26060 transitions. [2022-02-10 02:31:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2022-02-10 02:31:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.793103448275862) internal successors, (220), 58 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:31:04,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:31:05,010 INFO L225 Difference]: With dead ends: 16620 [2022-02-10 02:31:05,010 INFO L226 Difference]: Without dead ends: 16603 [2022-02-10 02:31:05,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41730 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=21446, Invalid=91786, Unknown=0, NotChecked=0, Total=113232 [2022-02-10 02:31:05,027 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 883 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:31:05,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 2171 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3021 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:31:05,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2022-02-10 02:31:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 9035. [2022-02-10 02:31:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9035 states, 9034 states have (on average 1.5998450298870932) internal successors, (14453), 9034 states have internal predecessors, (14453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9035 states to 9035 states and 14453 transitions. [2022-02-10 02:31:05,167 INFO L78 Accepts]: Start accepts. Automaton has 9035 states and 14453 transitions. Word has length 98 [2022-02-10 02:31:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:31:05,167 INFO L470 AbstractCegarLoop]: Abstraction has 9035 states and 14453 transitions. [2022-02-10 02:31:05,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.793103448275862) internal successors, (220), 58 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 9035 states and 14453 transitions. [2022-02-10 02:31:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:31:05,177 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:31:05,177 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:31:05,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-10 02:31:05,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-02-10 02:31:05,390 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:31:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:31:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1698224669, now seen corresponding path program 68 times [2022-02-10 02:31:05,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:31:05,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040774219] [2022-02-10 02:31:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:31:05,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:31:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:31:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:05,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:31:05,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040774219] [2022-02-10 02:31:05,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040774219] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:31:05,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756302544] [2022-02-10 02:31:05,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:31:05,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:31:05,684 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:31:05,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 02:31:05,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:31:05,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:31:05,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:31:05,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:31:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:06,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:31:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:07,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756302544] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:31:07,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:31:07,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 22] total 61 [2022-02-10 02:31:07,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129827073] [2022-02-10 02:31:07,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:31:07,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 02:31:07,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:31:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 02:31:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=3171, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:31:07,132 INFO L87 Difference]: Start difference. First operand 9035 states and 14453 transitions. Second operand has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:31:12,800 INFO L93 Difference]: Finished difference Result 20435 states and 31903 transitions. [2022-02-10 02:31:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2022-02-10 02:31:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:31:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:31:12,835 INFO L225 Difference]: With dead ends: 20435 [2022-02-10 02:31:12,836 INFO L226 Difference]: Without dead ends: 20322 [2022-02-10 02:31:12,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22338 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=14657, Invalid=50623, Unknown=0, NotChecked=0, Total=65280 [2022-02-10 02:31:12,845 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 791 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 02:31:12,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 1798 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 02:31:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20322 states. [2022-02-10 02:31:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20322 to 9333. [2022-02-10 02:31:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9333 states, 9332 states have (on average 1.5949421345906558) internal successors, (14884), 9332 states have internal predecessors, (14884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 14884 transitions. [2022-02-10 02:31:13,042 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 14884 transitions. Word has length 98 [2022-02-10 02:31:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:31:13,042 INFO L470 AbstractCegarLoop]: Abstraction has 9333 states and 14884 transitions. [2022-02-10 02:31:13,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 14884 transitions. [2022-02-10 02:31:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:31:13,054 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:31:13,054 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:31:13,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 02:31:13,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:13,255 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:31:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:31:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash 737323161, now seen corresponding path program 69 times [2022-02-10 02:31:13,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:31:13,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661329628] [2022-02-10 02:31:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:31:13,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:31:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:31:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 47 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:13,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:31:13,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661329628] [2022-02-10 02:31:13,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661329628] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:31:13,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694864551] [2022-02-10 02:31:13,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:31:13,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:31:13,526 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:31:13,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 02:31:13,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:31:13,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:31:13,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:31:13,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:31:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:14,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:31:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 60 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:14,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694864551] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:31:14,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:31:14,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 22] total 57 [2022-02-10 02:31:14,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505262500] [2022-02-10 02:31:14,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:31:14,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-10 02:31:14,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:31:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-10 02:31:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=2657, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:31:14,882 INFO L87 Difference]: Start difference. First operand 9333 states and 14884 transitions. Second operand has 57 states, 57 states have (on average 3.7719298245614037) internal successors, (215), 57 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:31:21,845 INFO L93 Difference]: Finished difference Result 12380 states and 19213 transitions. [2022-02-10 02:31:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-02-10 02:31:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.7719298245614037) internal successors, (215), 57 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:31:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:31:21,863 INFO L225 Difference]: With dead ends: 12380 [2022-02-10 02:31:21,863 INFO L226 Difference]: Without dead ends: 12378 [2022-02-10 02:31:21,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21232 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=11439, Invalid=49323, Unknown=0, NotChecked=0, Total=60762 [2022-02-10 02:31:21,872 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 758 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:31:21,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 3115 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:31:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12378 states. [2022-02-10 02:31:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12378 to 9364. [2022-02-10 02:31:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9364 states, 9363 states have (on average 1.5957492256755315) internal successors, (14941), 9363 states have internal predecessors, (14941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9364 states to 9364 states and 14941 transitions. [2022-02-10 02:31:22,019 INFO L78 Accepts]: Start accepts. Automaton has 9364 states and 14941 transitions. Word has length 98 [2022-02-10 02:31:22,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:31:22,019 INFO L470 AbstractCegarLoop]: Abstraction has 9364 states and 14941 transitions. [2022-02-10 02:31:22,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.7719298245614037) internal successors, (215), 57 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 9364 states and 14941 transitions. [2022-02-10 02:31:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:31:22,031 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:31:22,031 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:31:22,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 02:31:22,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:22,235 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:31:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:31:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash 899489973, now seen corresponding path program 70 times [2022-02-10 02:31:22,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:31:22,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786886989] [2022-02-10 02:31:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:31:22,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:31:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:31:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:22,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:31:22,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786886989] [2022-02-10 02:31:22,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786886989] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:31:22,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095923875] [2022-02-10 02:31:22,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:31:22,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:22,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:31:22,495 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:31:22,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 02:31:22,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:31:22,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:31:22,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:31:22,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:31:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:23,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:31:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:23,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095923875] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:31:23,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:31:23,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 22] total 58 [2022-02-10 02:31:23,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381036084] [2022-02-10 02:31:23,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:31:23,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-10 02:31:23,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:31:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-10 02:31:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2796, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:31:23,939 INFO L87 Difference]: Start difference. First operand 9364 states and 14941 transitions. Second operand has 58 states, 58 states have (on average 3.8448275862068964) internal successors, (223), 58 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:31:38,650 INFO L93 Difference]: Finished difference Result 16960 states and 26310 transitions. [2022-02-10 02:31:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2022-02-10 02:31:38,650 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.8448275862068964) internal successors, (223), 58 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:31:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:31:38,675 INFO L225 Difference]: With dead ends: 16960 [2022-02-10 02:31:38,675 INFO L226 Difference]: Without dead ends: 16945 [2022-02-10 02:31:38,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70700 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=33513, Invalid=146687, Unknown=0, NotChecked=0, Total=180200 [2022-02-10 02:31:38,700 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 793 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:31:38,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2051 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:31:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16945 states. [2022-02-10 02:31:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16945 to 9545. [2022-02-10 02:31:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 1.59639564124057) internal successors, (15236), 9544 states have internal predecessors, (15236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 15236 transitions. [2022-02-10 02:31:38,854 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 15236 transitions. Word has length 98 [2022-02-10 02:31:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:31:38,854 INFO L470 AbstractCegarLoop]: Abstraction has 9545 states and 15236 transitions. [2022-02-10 02:31:38,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.8448275862068964) internal successors, (223), 58 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 15236 transitions. [2022-02-10 02:31:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:31:38,865 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:31:38,865 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:31:38,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-10 02:31:39,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:39,066 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:31:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:31:39,067 INFO L85 PathProgramCache]: Analyzing trace with hash -340603197, now seen corresponding path program 71 times [2022-02-10 02:31:39,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:31:39,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458985596] [2022-02-10 02:31:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:31:39,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:31:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:31:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:39,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:31:39,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458985596] [2022-02-10 02:31:39,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458985596] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:31:39,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478037896] [2022-02-10 02:31:39,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:31:39,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:31:39,372 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:31:39,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 02:31:39,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:31:39,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:31:39,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:31:39,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:31:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:39,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:31:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 40 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:40,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478037896] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:31:40,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:31:40,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 24] total 62 [2022-02-10 02:31:40,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352702757] [2022-02-10 02:31:40,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:31:40,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-10 02:31:40,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:31:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-10 02:31:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=3260, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 02:31:40,616 INFO L87 Difference]: Start difference. First operand 9545 states and 15236 transitions. Second operand has 62 states, 62 states have (on average 3.6129032258064515) internal successors, (224), 62 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:56,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:31:56,778 INFO L93 Difference]: Finished difference Result 19974 states and 31019 transitions. [2022-02-10 02:31:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 446 states. [2022-02-10 02:31:56,779 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.6129032258064515) internal successors, (224), 62 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:31:56,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:31:56,808 INFO L225 Difference]: With dead ends: 19974 [2022-02-10 02:31:56,808 INFO L226 Difference]: Without dead ends: 19940 [2022-02-10 02:31:56,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 490 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95810 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=41386, Invalid=200186, Unknown=0, NotChecked=0, Total=241572 [2022-02-10 02:31:56,830 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 1372 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 4590 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 4590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:31:56,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1372 Valid, 2501 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 4590 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-10 02:31:56,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19940 states. [2022-02-10 02:31:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19940 to 9565. [2022-02-10 02:31:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9565 states, 9564 states have (on average 1.5947302383939774) internal successors, (15252), 9564 states have internal predecessors, (15252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9565 states to 9565 states and 15252 transitions. [2022-02-10 02:31:56,999 INFO L78 Accepts]: Start accepts. Automaton has 9565 states and 15252 transitions. Word has length 98 [2022-02-10 02:31:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:31:56,999 INFO L470 AbstractCegarLoop]: Abstraction has 9565 states and 15252 transitions. [2022-02-10 02:31:56,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.6129032258064515) internal successors, (224), 62 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:31:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9565 states and 15252 transitions. [2022-02-10 02:31:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:31:57,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:31:57,009 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:31:57,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-10 02:31:57,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-10 02:31:57,210 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:31:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:31:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash -711960355, now seen corresponding path program 72 times [2022-02-10 02:31:57,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:31:57,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738329561] [2022-02-10 02:31:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:31:57,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:31:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:31:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:57,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:31:57,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738329561] [2022-02-10 02:31:57,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738329561] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:31:57,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347720629] [2022-02-10 02:31:57,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:31:57,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:31:57,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:31:57,475 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:31:57,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 02:31:57,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:31:57,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:31:57,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:31:57,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:31:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:58,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:31:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:31:58,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347720629] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:31:58,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:31:58,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 23] total 61 [2022-02-10 02:31:58,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134632847] [2022-02-10 02:31:58,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:31:58,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 02:31:58,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:31:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 02:31:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=3179, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:31:58,788 INFO L87 Difference]: Start difference. First operand 9565 states and 15252 transitions. Second operand has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:32:09,753 INFO L93 Difference]: Finished difference Result 20664 states and 31815 transitions. [2022-02-10 02:32:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2022-02-10 02:32:09,754 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:32:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:32:09,786 INFO L225 Difference]: With dead ends: 20664 [2022-02-10 02:32:09,786 INFO L226 Difference]: Without dead ends: 20577 [2022-02-10 02:32:09,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49668 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=25804, Invalid=107056, Unknown=0, NotChecked=0, Total=132860 [2022-02-10 02:32:09,807 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 1335 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 3668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:32:09,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 2818 Invalid, 3668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 02:32:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20577 states. [2022-02-10 02:32:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20577 to 9755. [2022-02-10 02:32:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9755 states, 9754 states have (on average 1.5940127127332377) internal successors, (15548), 9754 states have internal predecessors, (15548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 15548 transitions. [2022-02-10 02:32:10,128 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 15548 transitions. Word has length 98 [2022-02-10 02:32:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:32:10,128 INFO L470 AbstractCegarLoop]: Abstraction has 9755 states and 15548 transitions. [2022-02-10 02:32:10,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 15548 transitions. [2022-02-10 02:32:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:32:10,139 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:32:10,139 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:32:10,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-10 02:32:10,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:32:10,339 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:32:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:32:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1429677273, now seen corresponding path program 73 times [2022-02-10 02:32:10,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:32:10,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602865592] [2022-02-10 02:32:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:32:10,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:32:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:32:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 47 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:32:10,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:32:10,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602865592] [2022-02-10 02:32:10,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602865592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:32:10,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901396370] [2022-02-10 02:32:10,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:32:10,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:32:10,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:32:10,575 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:32:10,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 02:32:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:32:10,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:32:10,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:32:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:11,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:32:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:11,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901396370] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:32:11,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:32:11,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 22] total 56 [2022-02-10 02:32:11,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334662696] [2022-02-10 02:32:11,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:32:11,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-10 02:32:11,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:32:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-10 02:32:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=2571, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:32:11,879 INFO L87 Difference]: Start difference. First operand 9755 states and 15548 transitions. Second operand has 56 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 56 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:32:18,388 INFO L93 Difference]: Finished difference Result 14064 states and 21726 transitions. [2022-02-10 02:32:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-02-10 02:32:18,388 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 56 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:32:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:32:18,412 INFO L225 Difference]: With dead ends: 14064 [2022-02-10 02:32:18,412 INFO L226 Difference]: Without dead ends: 14062 [2022-02-10 02:32:18,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20452 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11759, Invalid=48511, Unknown=0, NotChecked=0, Total=60270 [2022-02-10 02:32:18,422 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 855 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:32:18,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 2820 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:32:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14062 states. [2022-02-10 02:32:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14062 to 9793. [2022-02-10 02:32:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9793 states, 9792 states have (on average 1.595281862745098) internal successors, (15621), 9792 states have internal predecessors, (15621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9793 states to 9793 states and 15621 transitions. [2022-02-10 02:32:18,585 INFO L78 Accepts]: Start accepts. Automaton has 9793 states and 15621 transitions. Word has length 98 [2022-02-10 02:32:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:32:18,585 INFO L470 AbstractCegarLoop]: Abstraction has 9793 states and 15621 transitions. [2022-02-10 02:32:18,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 56 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 9793 states and 15621 transitions. [2022-02-10 02:32:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:32:18,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:32:18,598 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:32:18,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-10 02:32:18,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:32:18,799 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:32:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:32:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1591844085, now seen corresponding path program 74 times [2022-02-10 02:32:18,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:32:18,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65429228] [2022-02-10 02:32:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:32:18,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:32:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:32:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 83 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:32:19,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:32:19,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65429228] [2022-02-10 02:32:19,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65429228] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:32:19,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491527356] [2022-02-10 02:32:19,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:32:19,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:32:19,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:32:19,057 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:32:19,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 02:32:19,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:32:19,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:32:19,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:32:19,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:32:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 48 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:19,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:32:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:20,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491527356] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:32:20,538 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:32:20,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 22] total 57 [2022-02-10 02:32:20,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012072816] [2022-02-10 02:32:20,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:32:20,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-10 02:32:20,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:32:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-10 02:32:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2706, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:32:20,541 INFO L87 Difference]: Start difference. First operand 9793 states and 15621 transitions. Second operand has 57 states, 57 states have (on average 3.8771929824561404) internal successors, (221), 57 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:32:35,015 INFO L93 Difference]: Finished difference Result 20159 states and 31336 transitions. [2022-02-10 02:32:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 379 states. [2022-02-10 02:32:35,015 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.8771929824561404) internal successors, (221), 57 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:32:35,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:32:35,047 INFO L225 Difference]: With dead ends: 20159 [2022-02-10 02:32:35,047 INFO L226 Difference]: Without dead ends: 20147 [2022-02-10 02:32:35,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66931 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=33602, Invalid=139870, Unknown=0, NotChecked=0, Total=173472 [2022-02-10 02:32:35,059 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 1001 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:32:35,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 2278 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 02:32:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20147 states. [2022-02-10 02:32:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20147 to 9795. [2022-02-10 02:32:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9795 states, 9794 states have (on average 1.5954666122115582) internal successors, (15626), 9794 states have internal predecessors, (15626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 15626 transitions. [2022-02-10 02:32:35,256 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 15626 transitions. Word has length 98 [2022-02-10 02:32:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:32:35,256 INFO L470 AbstractCegarLoop]: Abstraction has 9795 states and 15626 transitions. [2022-02-10 02:32:35,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.8771929824561404) internal successors, (221), 57 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 15626 transitions. [2022-02-10 02:32:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:32:35,268 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:32:35,268 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:32:35,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-10 02:32:35,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-10 02:32:35,468 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:32:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:32:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 255362973, now seen corresponding path program 75 times [2022-02-10 02:32:35,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:32:35,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734004653] [2022-02-10 02:32:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:32:35,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:32:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:32:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:35,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:32:35,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734004653] [2022-02-10 02:32:35,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734004653] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:32:35,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182983179] [2022-02-10 02:32:35,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:32:35,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:32:35,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:32:35,745 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:32:35,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 02:32:35,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:32:35,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:32:35,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:32:35,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:32:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 36 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:36,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:32:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:37,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182983179] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:32:37,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:32:37,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 24] total 61 [2022-02-10 02:32:37,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859121371] [2022-02-10 02:32:37,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:32:37,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 02:32:37,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:32:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 02:32:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=3193, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:32:37,166 INFO L87 Difference]: Start difference. First operand 9795 states and 15626 transitions. Second operand has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:32:51,834 INFO L93 Difference]: Finished difference Result 23735 states and 36744 transitions. [2022-02-10 02:32:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2022-02-10 02:32:51,835 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:32:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:32:51,873 INFO L225 Difference]: With dead ends: 23735 [2022-02-10 02:32:51,874 INFO L226 Difference]: Without dead ends: 23628 [2022-02-10 02:32:51,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65434 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=32086, Invalid=140554, Unknown=0, NotChecked=0, Total=172640 [2022-02-10 02:32:51,901 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1514 mSDsluCounter, 3239 mSDsCounter, 0 mSdLazyCounter, 3588 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 3588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:32:51,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 3099 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 3588 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 02:32:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23628 states. [2022-02-10 02:32:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23628 to 10478. [2022-02-10 02:32:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10478 states, 10477 states have (on average 1.5966402596163023) internal successors, (16728), 10477 states have internal predecessors, (16728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 16728 transitions. [2022-02-10 02:32:52,120 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 16728 transitions. Word has length 98 [2022-02-10 02:32:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:32:52,121 INFO L470 AbstractCegarLoop]: Abstraction has 10478 states and 16728 transitions. [2022-02-10 02:32:52,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.7704918032786887) internal successors, (230), 61 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:32:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 16728 transitions. [2022-02-10 02:32:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:32:52,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:32:52,135 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:32:52,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-10 02:32:52,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-10 02:32:52,335 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:32:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:32:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash -772951783, now seen corresponding path program 76 times [2022-02-10 02:32:52,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:32:52,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008121957] [2022-02-10 02:32:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:32:52,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:32:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:32:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 47 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:32:52,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:32:52,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008121957] [2022-02-10 02:32:52,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008121957] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:32:52,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990154128] [2022-02-10 02:32:52,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:32:52,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:32:52,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:32:52,578 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:32:52,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 02:32:52,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:32:52,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:32:52,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:32:52,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:32:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:53,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:32:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:32:54,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990154128] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:32:54,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:32:54,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 22] total 56 [2022-02-10 02:32:54,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635469079] [2022-02-10 02:32:54,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:32:54,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-10 02:32:54,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:32:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-10 02:32:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=2577, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:32:54,026 INFO L87 Difference]: Start difference. First operand 10478 states and 16728 transitions. Second operand has 56 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 56 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:00,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:33:00,190 INFO L93 Difference]: Finished difference Result 16579 states and 25678 transitions. [2022-02-10 02:33:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-10 02:33:00,191 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 56 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:33:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:33:00,216 INFO L225 Difference]: With dead ends: 16579 [2022-02-10 02:33:00,216 INFO L226 Difference]: Without dead ends: 16577 [2022-02-10 02:33:00,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18941 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=11434, Invalid=45926, Unknown=0, NotChecked=0, Total=57360 [2022-02-10 02:33:00,226 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 1042 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 3148 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 3400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:33:00,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 3179 Invalid, 3400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:33:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16577 states. [2022-02-10 02:33:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16577 to 10537. [2022-02-10 02:33:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10537 states, 10536 states have (on average 1.5976651480637813) internal successors, (16833), 10536 states have internal predecessors, (16833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10537 states to 10537 states and 16833 transitions. [2022-02-10 02:33:00,409 INFO L78 Accepts]: Start accepts. Automaton has 10537 states and 16833 transitions. Word has length 98 [2022-02-10 02:33:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:33:00,410 INFO L470 AbstractCegarLoop]: Abstraction has 10537 states and 16833 transitions. [2022-02-10 02:33:00,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.8035714285714284) internal successors, (213), 56 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 10537 states and 16833 transitions. [2022-02-10 02:33:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:33:00,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:33:00,423 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:33:00,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-10 02:33:00,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:00,623 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:33:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:33:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1590374527, now seen corresponding path program 77 times [2022-02-10 02:33:00,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:33:00,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209430111] [2022-02-10 02:33:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:33:00,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:33:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:33:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 40 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:00,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:33:00,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209430111] [2022-02-10 02:33:00,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209430111] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:33:00,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692701657] [2022-02-10 02:33:00,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:33:00,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:00,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:33:00,913 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:33:00,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 02:33:01,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:33:01,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:33:01,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:33:01,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:33:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:01,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:33:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 36 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:02,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692701657] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:33:02,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:33:02,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 22] total 61 [2022-02-10 02:33:02,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913742619] [2022-02-10 02:33:02,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:33:02,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 02:33:02,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:33:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 02:33:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=3075, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:33:02,303 INFO L87 Difference]: Start difference. First operand 10537 states and 16833 transitions. Second operand has 61 states, 61 states have (on average 3.6885245901639343) internal successors, (225), 61 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:33:10,959 INFO L93 Difference]: Finished difference Result 15715 states and 24439 transitions. [2022-02-10 02:33:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 291 states. [2022-02-10 02:33:10,959 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.6885245901639343) internal successors, (225), 61 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:33:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:33:10,982 INFO L225 Difference]: With dead ends: 15715 [2022-02-10 02:33:10,983 INFO L226 Difference]: Without dead ends: 15704 [2022-02-10 02:33:11,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42830 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=21894, Invalid=91338, Unknown=0, NotChecked=0, Total=113232 [2022-02-10 02:33:11,000 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 818 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 3024 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 3024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:33:11,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 2534 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 3024 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:33:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15704 states. [2022-02-10 02:33:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15704 to 10590. [2022-02-10 02:33:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 10589 states have (on average 1.5980734724714327) internal successors, (16922), 10589 states have internal predecessors, (16922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 16922 transitions. [2022-02-10 02:33:11,184 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 16922 transitions. Word has length 98 [2022-02-10 02:33:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:33:11,184 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 16922 transitions. [2022-02-10 02:33:11,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.6885245901639343) internal successors, (225), 61 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 16922 transitions. [2022-02-10 02:33:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:33:11,197 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:33:11,198 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:33:11,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-10 02:33:11,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:11,398 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:33:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:33:11,399 INFO L85 PathProgramCache]: Analyzing trace with hash 663838069, now seen corresponding path program 78 times [2022-02-10 02:33:11,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:33:11,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218386809] [2022-02-10 02:33:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:33:11,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:33:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:33:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:11,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:33:11,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218386809] [2022-02-10 02:33:11,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218386809] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:33:11,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395608024] [2022-02-10 02:33:11,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:33:11,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:11,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:33:11,698 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:33:11,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 02:33:11,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:33:11,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:33:11,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-10 02:33:11,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:33:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:12,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:33:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:13,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395608024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:33:13,045 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:33:13,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 23] total 65 [2022-02-10 02:33:13,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453142988] [2022-02-10 02:33:13,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:33:13,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-10 02:33:13,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:33:13,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-10 02:33:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=3631, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:33:13,047 INFO L87 Difference]: Start difference. First operand 10590 states and 16922 transitions. Second operand has 65 states, 65 states have (on average 3.6153846153846154) internal successors, (235), 65 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:33:19,792 INFO L93 Difference]: Finished difference Result 21078 states and 32863 transitions. [2022-02-10 02:33:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-02-10 02:33:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.6153846153846154) internal successors, (235), 65 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:33:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:33:19,824 INFO L225 Difference]: With dead ends: 21078 [2022-02-10 02:33:19,824 INFO L226 Difference]: Without dead ends: 20961 [2022-02-10 02:33:19,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22704 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=13503, Invalid=53319, Unknown=0, NotChecked=0, Total=66822 [2022-02-10 02:33:19,833 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 1059 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:33:19,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 3130 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 02:33:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2022-02-10 02:33:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 10741. [2022-02-10 02:33:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10741 states, 10740 states have (on average 1.5930167597765363) internal successors, (17109), 10740 states have internal predecessors, (17109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10741 states to 10741 states and 17109 transitions. [2022-02-10 02:33:20,020 INFO L78 Accepts]: Start accepts. Automaton has 10741 states and 17109 transitions. Word has length 98 [2022-02-10 02:33:20,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:33:20,020 INFO L470 AbstractCegarLoop]: Abstraction has 10741 states and 17109 transitions. [2022-02-10 02:33:20,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.6153846153846154) internal successors, (235), 65 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:20,020 INFO L276 IsEmpty]: Start isEmpty. Operand 10741 states and 17109 transitions. [2022-02-10 02:33:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:33:20,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:33:20,034 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:33:20,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 02:33:20,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-02-10 02:33:20,235 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:33:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:33:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash -297063439, now seen corresponding path program 79 times [2022-02-10 02:33:20,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:33:20,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172871942] [2022-02-10 02:33:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:33:20,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:33:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:33:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:20,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:33:20,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172871942] [2022-02-10 02:33:20,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172871942] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:33:20,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483428573] [2022-02-10 02:33:20,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:33:20,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:33:20,482 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:33:20,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 02:33:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:33:20,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:33:20,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:33:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:21,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:33:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 45 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:21,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483428573] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:33:21,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:33:21,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 22] total 59 [2022-02-10 02:33:21,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427882973] [2022-02-10 02:33:21,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:33:21,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-10 02:33:21,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:33:21,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-10 02:33:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=2855, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:33:21,943 INFO L87 Difference]: Start difference. First operand 10741 states and 17109 transitions. Second operand has 59 states, 59 states have (on average 3.7288135593220337) internal successors, (220), 59 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:33:27,422 INFO L93 Difference]: Finished difference Result 14337 states and 22309 transitions. [2022-02-10 02:33:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-02-10 02:33:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.7288135593220337) internal successors, (220), 59 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:33:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:33:27,442 INFO L225 Difference]: With dead ends: 14337 [2022-02-10 02:33:27,442 INFO L226 Difference]: Without dead ends: 14335 [2022-02-10 02:33:27,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15263 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=9025, Invalid=36557, Unknown=0, NotChecked=0, Total=45582 [2022-02-10 02:33:27,450 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 831 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:33:27,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 2655 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:33:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14335 states. [2022-02-10 02:33:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14335 to 10917. [2022-02-10 02:33:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10917 states, 10916 states have (on average 1.5932576035177721) internal successors, (17392), 10916 states have internal predecessors, (17392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10917 states to 10917 states and 17392 transitions. [2022-02-10 02:33:27,591 INFO L78 Accepts]: Start accepts. Automaton has 10917 states and 17392 transitions. Word has length 98 [2022-02-10 02:33:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:33:27,591 INFO L470 AbstractCegarLoop]: Abstraction has 10917 states and 17392 transitions. [2022-02-10 02:33:27,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.7288135593220337) internal successors, (220), 59 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 10917 states and 17392 transitions. [2022-02-10 02:33:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:33:27,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:33:27,604 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:33:27,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-10 02:33:27,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:27,815 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:33:27,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:33:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -134896627, now seen corresponding path program 80 times [2022-02-10 02:33:27,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:33:27,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642460917] [2022-02-10 02:33:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:33:27,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:33:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:33:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:28,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:33:28,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642460917] [2022-02-10 02:33:28,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642460917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:33:28,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87394024] [2022-02-10 02:33:28,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:33:28,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:33:28,113 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:33:28,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 02:33:28,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:33:28,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:33:28,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:33:28,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:33:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:28,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:33:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:29,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87394024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:33:29,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:33:29,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 22] total 60 [2022-02-10 02:33:29,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036652784] [2022-02-10 02:33:29,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:33:29,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-10 02:33:29,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:33:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-10 02:33:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=3000, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:33:29,666 INFO L87 Difference]: Start difference. First operand 10917 states and 17392 transitions. Second operand has 60 states, 60 states have (on average 3.8) internal successors, (228), 60 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 02:33:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:33:42,385 INFO L93 Difference]: Finished difference Result 19885 states and 30900 transitions. [2022-02-10 02:33:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2022-02-10 02:33:42,386 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.8) internal successors, (228), 60 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 98 [2022-02-10 02:33:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:33:42,424 INFO L225 Difference]: With dead ends: 19885 [2022-02-10 02:33:42,424 INFO L226 Difference]: Without dead ends: 19873 [2022-02-10 02:33:42,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54117 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=28747, Invalid=112253, Unknown=0, NotChecked=0, Total=141000 [2022-02-10 02:33:42,440 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 809 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 3156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:33:42,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2041 Invalid, 3156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:33:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19873 states. [2022-02-10 02:33:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19873 to 10827. [2022-02-10 02:33:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 10826 states have (on average 1.5926473305006466) internal successors, (17242), 10826 states have internal predecessors, (17242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 17242 transitions. [2022-02-10 02:33:42,630 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 17242 transitions. Word has length 98 [2022-02-10 02:33:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:33:42,630 INFO L470 AbstractCegarLoop]: Abstraction has 10827 states and 17242 transitions. [2022-02-10 02:33:42,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.8) internal successors, (228), 60 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 02:33:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 17242 transitions. [2022-02-10 02:33:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:33:42,642 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:33:42,642 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:33:42,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-10 02:33:42,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:42,843 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:33:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:33:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash 435456441, now seen corresponding path program 81 times [2022-02-10 02:33:42,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:33:42,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968544003] [2022-02-10 02:33:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:33:42,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:33:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:33:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:43,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:33:43,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968544003] [2022-02-10 02:33:43,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968544003] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:33:43,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477071397] [2022-02-10 02:33:43,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:33:43,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:43,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:33:43,114 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:33:43,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 02:33:43,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:33:43,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:33:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:33:43,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:33:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:43,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:33:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:44,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477071397] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:33:44,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:33:44,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 20] total 54 [2022-02-10 02:33:44,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73529382] [2022-02-10 02:33:44,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:33:44,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-10 02:33:44,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:33:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-10 02:33:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2561, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:33:44,192 INFO L87 Difference]: Start difference. First operand 10827 states and 17242 transitions. Second operand has 54 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 54 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:33:54,307 INFO L93 Difference]: Finished difference Result 26942 states and 41450 transitions. [2022-02-10 02:33:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 302 states. [2022-02-10 02:33:54,308 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 54 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:33:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:33:54,360 INFO L225 Difference]: With dead ends: 26942 [2022-02-10 02:33:54,360 INFO L226 Difference]: Without dead ends: 26814 [2022-02-10 02:33:54,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46213 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=21667, Invalid=96325, Unknown=0, NotChecked=0, Total=117992 [2022-02-10 02:33:54,380 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 950 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 3728 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:33:54,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3506 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3728 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 02:33:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26814 states. [2022-02-10 02:33:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26814 to 11572. [2022-02-10 02:33:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11572 states, 11571 states have (on average 1.5938121164981418) internal successors, (18442), 11571 states have internal predecessors, (18442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11572 states to 11572 states and 18442 transitions. [2022-02-10 02:33:54,652 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 18442 transitions. Word has length 98 [2022-02-10 02:33:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:33:54,652 INFO L470 AbstractCegarLoop]: Abstraction has 11572 states and 18442 transitions. [2022-02-10 02:33:54,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 54 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:33:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 18442 transitions. [2022-02-10 02:33:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:33:54,666 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:33:54,666 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:33:54,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-10 02:33:54,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-02-10 02:33:54,867 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:33:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:33:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1717873227, now seen corresponding path program 82 times [2022-02-10 02:33:54,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:33:54,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728508236] [2022-02-10 02:33:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:33:54,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:33:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:33:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 63 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:33:55,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:33:55,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728508236] [2022-02-10 02:33:55,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728508236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:33:55,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406479356] [2022-02-10 02:33:55,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:33:55,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:33:55,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:33:55,145 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:33:55,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 02:33:55,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:33:55,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:33:55,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:33:55,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:33:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 71 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:55,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:33:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:33:56,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406479356] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:33:56,618 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:33:56,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 22] total 58 [2022-02-10 02:33:56,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667218106] [2022-02-10 02:33:56,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:33:56,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-10 02:33:56,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:33:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-10 02:33:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=2766, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:33:56,620 INFO L87 Difference]: Start difference. First operand 11572 states and 18442 transitions. Second operand has 58 states, 58 states have (on average 3.7586206896551726) internal successors, (218), 58 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:34:02,426 INFO L93 Difference]: Finished difference Result 16775 states and 25907 transitions. [2022-02-10 02:34:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-02-10 02:34:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.7586206896551726) internal successors, (218), 58 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:34:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:34:02,454 INFO L225 Difference]: With dead ends: 16775 [2022-02-10 02:34:02,454 INFO L226 Difference]: Without dead ends: 16773 [2022-02-10 02:34:02,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16548 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=9872, Invalid=39634, Unknown=0, NotChecked=0, Total=49506 [2022-02-10 02:34:02,463 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 1160 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:34:02,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 2477 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:34:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16773 states. [2022-02-10 02:34:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16773 to 11786. [2022-02-10 02:34:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11786 states, 11785 states have (on average 1.5941450997030122) internal successors, (18787), 11785 states have internal predecessors, (18787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11786 states to 11786 states and 18787 transitions. [2022-02-10 02:34:02,644 INFO L78 Accepts]: Start accepts. Automaton has 11786 states and 18787 transitions. Word has length 98 [2022-02-10 02:34:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:34:02,644 INFO L470 AbstractCegarLoop]: Abstraction has 11786 states and 18787 transitions. [2022-02-10 02:34:02,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.7586206896551726) internal successors, (218), 58 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11786 states and 18787 transitions. [2022-02-10 02:34:02,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:34:02,660 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:34:02,660 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:34:02,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-10 02:34:02,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:02,861 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:34:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:34:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -754870471, now seen corresponding path program 83 times [2022-02-10 02:34:02,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:34:02,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131434972] [2022-02-10 02:34:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:34:02,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:34:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:34:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 95 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:34:03,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:34:03,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131434972] [2022-02-10 02:34:03,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131434972] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:34:03,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942758390] [2022-02-10 02:34:03,104 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:34:03,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:03,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:34:03,105 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:34:03,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 02:34:03,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:34:03,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:34:03,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:34:03,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:34:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:03,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:34:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:04,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942758390] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:34:04,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:34:04,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 22] total 61 [2022-02-10 02:34:04,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830857134] [2022-02-10 02:34:04,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:34:04,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-10 02:34:04,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:34:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-10 02:34:04,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3157, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 02:34:04,536 INFO L87 Difference]: Start difference. First operand 11786 states and 18787 transitions. Second operand has 61 states, 61 states have (on average 3.819672131147541) internal successors, (233), 61 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 02:34:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:34:16,877 INFO L93 Difference]: Finished difference Result 28860 states and 44662 transitions. [2022-02-10 02:34:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2022-02-10 02:34:16,877 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.819672131147541) internal successors, (233), 61 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 98 [2022-02-10 02:34:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:34:16,929 INFO L225 Difference]: With dead ends: 28860 [2022-02-10 02:34:16,929 INFO L226 Difference]: Without dead ends: 28826 [2022-02-10 02:34:16,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55259 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=29679, Invalid=117393, Unknown=0, NotChecked=0, Total=147072 [2022-02-10 02:34:16,950 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 1125 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 3882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:34:16,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2918 Invalid, 3882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 02:34:16,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28826 states. [2022-02-10 02:34:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28826 to 13441. [2022-02-10 02:34:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13441 states, 13440 states have (on average 1.5972470238095238) internal successors, (21467), 13440 states have internal predecessors, (21467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13441 states to 13441 states and 21467 transitions. [2022-02-10 02:34:17,274 INFO L78 Accepts]: Start accepts. Automaton has 13441 states and 21467 transitions. Word has length 98 [2022-02-10 02:34:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:34:17,274 INFO L470 AbstractCegarLoop]: Abstraction has 13441 states and 21467 transitions. [2022-02-10 02:34:17,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.819672131147541) internal successors, (233), 61 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 02:34:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 13441 states and 21467 transitions. [2022-02-10 02:34:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:34:17,289 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:34:17,289 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:34:17,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-10 02:34:17,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:17,490 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:34:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:34:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -195262527, now seen corresponding path program 84 times [2022-02-10 02:34:17,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:34:17,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224483843] [2022-02-10 02:34:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:34:17,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:34:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:34:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:17,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:34:17,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224483843] [2022-02-10 02:34:17,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224483843] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:34:17,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241035836] [2022-02-10 02:34:17,735 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:34:17,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:17,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:34:17,737 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:34:17,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 02:34:17,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:34:17,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:34:17,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 02:34:17,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:34:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:18,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:34:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:19,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241035836] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:34:19,054 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:34:19,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 22] total 59 [2022-02-10 02:34:19,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029345116] [2022-02-10 02:34:19,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:34:19,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-10 02:34:19,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:34:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-10 02:34:19,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=3019, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:34:19,056 INFO L87 Difference]: Start difference. First operand 13441 states and 21467 transitions. Second operand has 59 states, 59 states have (on average 3.983050847457627) internal successors, (235), 59 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:34:33,152 INFO L93 Difference]: Finished difference Result 27721 states and 42582 transitions. [2022-02-10 02:34:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 347 states. [2022-02-10 02:34:33,152 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.983050847457627) internal successors, (235), 59 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:34:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:34:33,204 INFO L225 Difference]: With dead ends: 27721 [2022-02-10 02:34:33,204 INFO L226 Difference]: Without dead ends: 27645 [2022-02-10 02:34:33,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60918 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=28754, Invalid=127666, Unknown=0, NotChecked=0, Total=156420 [2022-02-10 02:34:33,229 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 1459 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:34:33,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1459 Valid, 2067 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:34:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27645 states. [2022-02-10 02:34:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27645 to 12080. [2022-02-10 02:34:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12080 states, 12079 states have (on average 1.588707674476364) internal successors, (19190), 12079 states have internal predecessors, (19190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 19190 transitions. [2022-02-10 02:34:33,466 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 19190 transitions. Word has length 98 [2022-02-10 02:34:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:34:33,466 INFO L470 AbstractCegarLoop]: Abstraction has 12080 states and 19190 transitions. [2022-02-10 02:34:33,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.983050847457627) internal successors, (235), 59 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 19190 transitions. [2022-02-10 02:34:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:34:33,479 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:34:33,479 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:34:33,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-10 02:34:33,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-02-10 02:34:33,679 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:34:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:34:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1806901369, now seen corresponding path program 85 times [2022-02-10 02:34:33,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:34:33,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169889308] [2022-02-10 02:34:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:34:33,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:34:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:34:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-10 02:34:33,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:34:33,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169889308] [2022-02-10 02:34:33,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169889308] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:34:33,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661726373] [2022-02-10 02:34:33,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:34:33,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:33,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:34:33,923 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:34:33,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 02:34:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:34:34,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:34:34,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:34:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:34,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:34:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 39 proven. 63 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-10 02:34:35,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661726373] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:34:35,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:34:35,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 19] total 55 [2022-02-10 02:34:35,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110942814] [2022-02-10 02:34:35,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:34:35,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-10 02:34:35,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:34:35,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-10 02:34:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=2500, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:34:35,278 INFO L87 Difference]: Start difference. First operand 12080 states and 19190 transitions. Second operand has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 55 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:34:40,820 INFO L93 Difference]: Finished difference Result 18600 states and 28612 transitions. [2022-02-10 02:34:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-02-10 02:34:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 55 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:34:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:34:40,845 INFO L225 Difference]: With dead ends: 18600 [2022-02-10 02:34:40,845 INFO L226 Difference]: Without dead ends: 18598 [2022-02-10 02:34:40,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14204 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8846, Invalid=35886, Unknown=0, NotChecked=0, Total=44732 [2022-02-10 02:34:40,850 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 889 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:34:40,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 2634 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:34:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18598 states. [2022-02-10 02:34:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18598 to 11950. [2022-02-10 02:34:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11950 states, 11949 states have (on average 1.590342288057578) internal successors, (19003), 11949 states have internal predecessors, (19003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11950 states to 11950 states and 19003 transitions. [2022-02-10 02:34:41,017 INFO L78 Accepts]: Start accepts. Automaton has 11950 states and 19003 transitions. Word has length 98 [2022-02-10 02:34:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:34:41,017 INFO L470 AbstractCegarLoop]: Abstraction has 11950 states and 19003 transitions. [2022-02-10 02:34:41,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.8727272727272726) internal successors, (213), 55 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 11950 states and 19003 transitions. [2022-02-10 02:34:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:34:41,031 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:34:41,031 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:34:41,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-10 02:34:41,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:41,232 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:34:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:34:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1027420445, now seen corresponding path program 86 times [2022-02-10 02:34:41,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:34:41,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240617236] [2022-02-10 02:34:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:34:41,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:34:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:34:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:41,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:34:41,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240617236] [2022-02-10 02:34:41,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240617236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:34:41,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151247507] [2022-02-10 02:34:41,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:34:41,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:41,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:34:41,523 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:34:41,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 02:34:41,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:34:41,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:34:41,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:34:41,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:34:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:42,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:34:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:43,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151247507] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:34:43,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:34:43,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 22] total 67 [2022-02-10 02:34:43,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325459563] [2022-02-10 02:34:43,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:34:43,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-10 02:34:43,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:34:43,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-10 02:34:43,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=3851, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 02:34:43,107 INFO L87 Difference]: Start difference. First operand 11950 states and 19003 transitions. Second operand has 67 states, 67 states have (on average 3.582089552238806) internal successors, (240), 67 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:34:48,068 INFO L93 Difference]: Finished difference Result 19791 states and 30994 transitions. [2022-02-10 02:34:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-02-10 02:34:48,068 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.582089552238806) internal successors, (240), 67 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:34:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:34:48,097 INFO L225 Difference]: With dead ends: 19791 [2022-02-10 02:34:48,098 INFO L226 Difference]: Without dead ends: 19672 [2022-02-10 02:34:48,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15464 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10341, Invalid=37401, Unknown=0, NotChecked=0, Total=47742 [2022-02-10 02:34:48,104 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 766 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 2641 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:34:48,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2010 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2641 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 02:34:48,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19672 states. [2022-02-10 02:34:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19672 to 11115. [2022-02-10 02:34:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11115 states, 11114 states have (on average 1.5827784775958251) internal successors, (17591), 11114 states have internal predecessors, (17591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11115 states to 11115 states and 17591 transitions. [2022-02-10 02:34:48,278 INFO L78 Accepts]: Start accepts. Automaton has 11115 states and 17591 transitions. Word has length 98 [2022-02-10 02:34:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:34:48,279 INFO L470 AbstractCegarLoop]: Abstraction has 11115 states and 17591 transitions. [2022-02-10 02:34:48,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.582089552238806) internal successors, (240), 67 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11115 states and 17591 transitions. [2022-02-10 02:34:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:34:48,291 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:34:48,291 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:34:48,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-10 02:34:48,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:48,492 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:34:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:34:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1921744155, now seen corresponding path program 87 times [2022-02-10 02:34:48,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:34:48,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573890150] [2022-02-10 02:34:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:34:48,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:34:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:34:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:48,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:34:48,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573890150] [2022-02-10 02:34:48,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573890150] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:34:48,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619696101] [2022-02-10 02:34:48,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:34:48,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:34:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:34:48,758 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:34:48,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 02:34:48,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:34:48,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:34:48,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:34:48,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:34:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:49,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:34:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:34:50,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619696101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:34:50,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:34:50,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 22] total 65 [2022-02-10 02:34:50,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542780098] [2022-02-10 02:34:50,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:34:50,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-10 02:34:50,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:34:50,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-10 02:34:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=3621, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 02:34:50,334 INFO L87 Difference]: Start difference. First operand 11115 states and 17591 transitions. Second operand has 65 states, 65 states have (on average 3.6923076923076925) internal successors, (240), 65 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:34:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:34:59,949 INFO L93 Difference]: Finished difference Result 21989 states and 33633 transitions. [2022-02-10 02:34:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-02-10 02:34:59,949 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.6923076923076925) internal successors, (240), 65 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:34:59,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:34:59,980 INFO L225 Difference]: With dead ends: 21989 [2022-02-10 02:34:59,980 INFO L226 Difference]: Without dead ends: 21895 [2022-02-10 02:34:59,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38365 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=19979, Invalid=78931, Unknown=0, NotChecked=0, Total=98910 [2022-02-10 02:34:59,985 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1298 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:34:59,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 3118 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 02:35:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21895 states. [2022-02-10 02:35:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21895 to 10256. [2022-02-10 02:35:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10256 states, 10255 states have (on average 1.5791321306679669) internal successors, (16194), 10255 states have internal predecessors, (16194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10256 states to 10256 states and 16194 transitions. [2022-02-10 02:35:00,159 INFO L78 Accepts]: Start accepts. Automaton has 10256 states and 16194 transitions. Word has length 98 [2022-02-10 02:35:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:35:00,160 INFO L470 AbstractCegarLoop]: Abstraction has 10256 states and 16194 transitions. [2022-02-10 02:35:00,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.6923076923076925) internal successors, (240), 65 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:00,160 INFO L276 IsEmpty]: Start isEmpty. Operand 10256 states and 16194 transitions. [2022-02-10 02:35:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 02:35:00,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:35:00,170 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2022-02-10 02:35:00,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-10 02:35:00,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:00,371 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:35:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:35:00,372 INFO L85 PathProgramCache]: Analyzing trace with hash 665544309, now seen corresponding path program 88 times [2022-02-10 02:35:00,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:35:00,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056425161] [2022-02-10 02:35:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:35:00,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:35:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:35:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:00,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:35:00,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056425161] [2022-02-10 02:35:00,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056425161] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:35:00,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227068243] [2022-02-10 02:35:00,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:35:00,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:00,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:35:00,649 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:35:00,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 02:35:00,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:35:00,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:35:00,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 02:35:00,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:35:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:01,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:35:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:02,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227068243] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:35:02,327 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:35:02,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 22] total 70 [2022-02-10 02:35:02,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095460615] [2022-02-10 02:35:02,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:35:02,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-10 02:35:02,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:35:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-10 02:35:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=639, Invalid=4191, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:35:02,329 INFO L87 Difference]: Start difference. First operand 10256 states and 16194 transitions. Second operand has 70 states, 70 states have (on average 3.5) internal successors, (245), 70 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:35:08,322 INFO L93 Difference]: Finished difference Result 20059 states and 31109 transitions. [2022-02-10 02:35:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2022-02-10 02:35:08,322 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.5) internal successors, (245), 70 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 02:35:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:35:08,353 INFO L225 Difference]: With dead ends: 20059 [2022-02-10 02:35:08,353 INFO L226 Difference]: Without dead ends: 19892 [2022-02-10 02:35:08,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20574 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12104, Invalid=47676, Unknown=0, NotChecked=0, Total=59780 [2022-02-10 02:35:08,362 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 1093 mSDsluCounter, 3721 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:35:08,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 3498 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 02:35:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19892 states. [2022-02-10 02:35:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19892 to 10242. [2022-02-10 02:35:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10241 states have (on average 1.5747485597109658) internal successors, (16127), 10241 states have internal predecessors, (16127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 16127 transitions. [2022-02-10 02:35:08,562 INFO L78 Accepts]: Start accepts. Automaton has 10242 states and 16127 transitions. Word has length 98 [2022-02-10 02:35:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:35:08,562 INFO L470 AbstractCegarLoop]: Abstraction has 10242 states and 16127 transitions. [2022-02-10 02:35:08,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.5) internal successors, (245), 70 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 10242 states and 16127 transitions. [2022-02-10 02:35:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 02:35:08,576 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:35:08,576 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:08,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-02-10 02:35:08,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-02-10 02:35:08,777 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:35:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:35:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 841833053, now seen corresponding path program 89 times [2022-02-10 02:35:08,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:35:08,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111799291] [2022-02-10 02:35:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:35:08,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:35:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:35:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:08,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:35:08,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111799291] [2022-02-10 02:35:08,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111799291] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:35:08,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953317645] [2022-02-10 02:35:08,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:35:08,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:08,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:35:08,893 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:35:08,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 02:35:09,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:35:09,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:35:09,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 02:35:09,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:35:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:09,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:35:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:10,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953317645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:35:10,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:35:10,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 23 [2022-02-10 02:35:10,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487735702] [2022-02-10 02:35:10,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:35:10,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:35:10,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:35:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:35:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:35:10,217 INFO L87 Difference]: Start difference. First operand 10242 states and 16127 transitions. Second operand has 23 states, 23 states have (on average 7.6521739130434785) internal successors, (176), 23 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:35:10,460 INFO L93 Difference]: Finished difference Result 14256 states and 22607 transitions. [2022-02-10 02:35:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:35:10,461 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.6521739130434785) internal successors, (176), 23 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have 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 02:35:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:35:10,481 INFO L225 Difference]: With dead ends: 14256 [2022-02-10 02:35:10,481 INFO L226 Difference]: Without dead ends: 14209 [2022-02-10 02:35:10,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:35:10,482 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 594 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:35:10,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1835 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:35:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14209 states. [2022-02-10 02:35:10,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14209 to 13053. [2022-02-10 02:35:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13053 states, 13052 states have (on average 1.592093165798345) internal successors, (20780), 13052 states have internal predecessors, (20780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13053 states to 13053 states and 20780 transitions. [2022-02-10 02:35:10,646 INFO L78 Accepts]: Start accepts. Automaton has 13053 states and 20780 transitions. Word has length 100 [2022-02-10 02:35:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:35:10,646 INFO L470 AbstractCegarLoop]: Abstraction has 13053 states and 20780 transitions. [2022-02-10 02:35:10,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.6521739130434785) internal successors, (176), 23 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 13053 states and 20780 transitions. [2022-02-10 02:35:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 02:35:10,660 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:35:10,661 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:10,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-10 02:35:10,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:10,863 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:35:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:35:10,864 INFO L85 PathProgramCache]: Analyzing trace with hash -868365145, now seen corresponding path program 90 times [2022-02-10 02:35:10,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:35:10,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314551307] [2022-02-10 02:35:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:35:10,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:35:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:35:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:11,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:35:11,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314551307] [2022-02-10 02:35:11,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314551307] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:35:11,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458434903] [2022-02-10 02:35:11,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:35:11,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:11,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:35:11,239 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:35:11,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 02:35:11,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:35:11,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:35:11,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 02:35:11,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:35:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:11,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:35:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:12,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458434903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:35:12,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:35:12,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 10, 10] total 40 [2022-02-10 02:35:12,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821515171] [2022-02-10 02:35:12,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:35:12,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 02:35:12,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:35:12,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 02:35:12,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:35:12,044 INFO L87 Difference]: Start difference. First operand 13053 states and 20780 transitions. Second operand has 40 states, 40 states have (on average 5.225) internal successors, (209), 40 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:13,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:35:13,861 INFO L93 Difference]: Finished difference Result 16500 states and 25905 transitions. [2022-02-10 02:35:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 02:35:13,862 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.225) internal successors, (209), 40 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 02:35:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:35:13,887 INFO L225 Difference]: With dead ends: 16500 [2022-02-10 02:35:13,887 INFO L226 Difference]: Without dead ends: 16497 [2022-02-10 02:35:13,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 180 SyntacticMatches, 7 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=963, Invalid=8937, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 02:35:13,889 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 465 mSDsluCounter, 3245 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:35:13,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 3172 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:35:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16497 states. [2022-02-10 02:35:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16497 to 13068. [2022-02-10 02:35:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13068 states, 13067 states have (on average 1.5980714777684242) internal successors, (20882), 13067 states have internal predecessors, (20882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13068 states to 13068 states and 20882 transitions. [2022-02-10 02:35:14,103 INFO L78 Accepts]: Start accepts. Automaton has 13068 states and 20882 transitions. Word has length 100 [2022-02-10 02:35:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:35:14,104 INFO L470 AbstractCegarLoop]: Abstraction has 13068 states and 20882 transitions. [2022-02-10 02:35:14,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.225) internal successors, (209), 40 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13068 states and 20882 transitions. [2022-02-10 02:35:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 02:35:14,120 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:35:14,120 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:14,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-10 02:35:14,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:14,321 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:35:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:35:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash 238728315, now seen corresponding path program 91 times [2022-02-10 02:35:14,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:35:14,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441343071] [2022-02-10 02:35:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:35:14,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:35:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:35:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:14,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:35:14,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441343071] [2022-02-10 02:35:14,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441343071] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:35:14,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077154827] [2022-02-10 02:35:14,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:35:14,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:14,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:35:14,729 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:35:14,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 02:35:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:35:14,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 02:35:14,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:35:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:15,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:35:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 34 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:17,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077154827] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:35:17,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:35:17,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 64 [2022-02-10 02:35:17,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048750956] [2022-02-10 02:35:17,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:35:17,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-10 02:35:17,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:35:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-10 02:35:17,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=3522, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 02:35:17,650 INFO L87 Difference]: Start difference. First operand 13068 states and 20882 transitions. Second operand has 64 states, 64 states have (on average 3.234375) internal successors, (207), 64 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:35:30,493 INFO L93 Difference]: Finished difference Result 20603 states and 31530 transitions. [2022-02-10 02:35:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2022-02-10 02:35:30,494 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.234375) internal successors, (207), 64 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have 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 02:35:30,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:35:30,528 INFO L225 Difference]: With dead ends: 20603 [2022-02-10 02:35:30,529 INFO L226 Difference]: Without dead ends: 20560 [2022-02-10 02:35:30,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44873 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=13240, Invalid=102020, Unknown=0, NotChecked=0, Total=115260 [2022-02-10 02:35:30,546 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 1712 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 5097 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 5616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 5097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:35:30,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 2896 Invalid, 5616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 5097 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-10 02:35:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20560 states. [2022-02-10 02:35:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20560 to 13127. [2022-02-10 02:35:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13127 states, 13126 states have (on average 1.5978211183909798) internal successors, (20973), 13126 states have internal predecessors, (20973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13127 states to 13127 states and 20973 transitions. [2022-02-10 02:35:30,763 INFO L78 Accepts]: Start accepts. Automaton has 13127 states and 20973 transitions. Word has length 100 [2022-02-10 02:35:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:35:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 13127 states and 20973 transitions. [2022-02-10 02:35:30,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.234375) internal successors, (207), 64 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 13127 states and 20973 transitions. [2022-02-10 02:35:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 02:35:30,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:35:30,780 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:30,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-10 02:35:30,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:30,980 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:35:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:35:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1995938679, now seen corresponding path program 92 times [2022-02-10 02:35:30,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:35:30,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067455165] [2022-02-10 02:35:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:35:30,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:35:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:35:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 26 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:31,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:35:31,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067455165] [2022-02-10 02:35:31,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067455165] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:35:31,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643147138] [2022-02-10 02:35:31,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:35:31,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:31,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:35:31,284 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:35:31,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 02:35:31,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:35:31,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:35:31,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 02:35:31,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:35:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 26 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:31,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:35:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:34,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643147138] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:35:34,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:35:34,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 25] total 57 [2022-02-10 02:35:34,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405628225] [2022-02-10 02:35:34,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:35:34,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-10 02:35:34,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:35:34,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-10 02:35:34,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=2721, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:35:34,252 INFO L87 Difference]: Start difference. First operand 13127 states and 20973 transitions. Second operand has 57 states, 57 states have (on average 3.263157894736842) internal successors, (186), 57 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:35:39,295 INFO L93 Difference]: Finished difference Result 17650 states and 27525 transitions. [2022-02-10 02:35:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-02-10 02:35:39,295 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.263157894736842) internal successors, (186), 57 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have 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 02:35:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:35:39,325 INFO L225 Difference]: With dead ends: 17650 [2022-02-10 02:35:39,325 INFO L226 Difference]: Without dead ends: 17647 [2022-02-10 02:35:39,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10555 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3849, Invalid=29093, Unknown=0, NotChecked=0, Total=32942 [2022-02-10 02:35:39,330 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 868 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:35:39,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 2568 Invalid, 4452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-10 02:35:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17647 states. [2022-02-10 02:35:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17647 to 13069. [2022-02-10 02:35:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13069 states, 13068 states have (on average 1.597719620446893) internal successors, (20879), 13068 states have internal predecessors, (20879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13069 states to 13069 states and 20879 transitions. [2022-02-10 02:35:39,509 INFO L78 Accepts]: Start accepts. Automaton has 13069 states and 20879 transitions. Word has length 100 [2022-02-10 02:35:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:35:39,509 INFO L470 AbstractCegarLoop]: Abstraction has 13069 states and 20879 transitions. [2022-02-10 02:35:39,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.263157894736842) internal successors, (186), 57 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:35:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13069 states and 20879 transitions. [2022-02-10 02:35:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 02:35:39,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:35:39,523 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:39,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-10 02:35:39,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:39,724 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:35:39,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:35:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1669348909, now seen corresponding path program 93 times [2022-02-10 02:35:39,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:35:39,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257061575] [2022-02-10 02:35:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:35:39,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:35:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:35:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:40,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:35:40,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257061575] [2022-02-10 02:35:40,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257061575] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:35:40,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997124965] [2022-02-10 02:35:40,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:35:40,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:35:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:35:40,058 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:35:40,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 02:35:40,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:35:40,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:35:40,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 02:35:40,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:35:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:40,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:35:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 20 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:35:42,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997124965] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:35:42,849 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:35:42,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 27] total 67 [2022-02-10 02:35:42,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293559414] [2022-02-10 02:35:42,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:35:42,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-10 02:35:42,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:35:42,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-10 02:35:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=3883, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 02:35:42,850 INFO L87 Difference]: Start difference. First operand 13069 states and 20879 transitions. Second operand has 67 states, 67 states have (on average 3.1641791044776117) internal successors, (212), 67 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:36:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:36:01,219 INFO L93 Difference]: Finished difference Result 31866 states and 49006 transitions. [2022-02-10 02:36:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2022-02-10 02:36:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.1641791044776117) internal successors, (212), 67 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have 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 02:36:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:36:01,277 INFO L225 Difference]: With dead ends: 31866 [2022-02-10 02:36:01,277 INFO L226 Difference]: Without dead ends: 31811 [2022-02-10 02:36:01,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47920 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=17997, Invalid=99995, Unknown=0, NotChecked=0, Total=117992 [2022-02-10 02:36:01,288 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1577 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 4434 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 4818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 4434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:36:01,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 2946 Invalid, 4818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 4434 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-10 02:36:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31811 states. [2022-02-10 02:36:01,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31811 to 14750. [2022-02-10 02:36:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14750 states, 14749 states have (on average 1.6072954098582954) internal successors, (23706), 14749 states have internal predecessors, (23706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:36:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14750 states to 14750 states and 23706 transitions. [2022-02-10 02:36:01,633 INFO L78 Accepts]: Start accepts. Automaton has 14750 states and 23706 transitions. Word has length 100 [2022-02-10 02:36:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:36:01,634 INFO L470 AbstractCegarLoop]: Abstraction has 14750 states and 23706 transitions. [2022-02-10 02:36:01,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.1641791044776117) internal successors, (212), 67 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:36:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14750 states and 23706 transitions. [2022-02-10 02:36:01,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 02:36:01,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:36:01,653 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:01,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-10 02:36:01,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-10 02:36:01,854 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:36:01,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:36:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash 87861455, now seen corresponding path program 94 times [2022-02-10 02:36:01,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:36:01,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285720907] [2022-02-10 02:36:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:36:01,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:36:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:36:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 26 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:36:02,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:36:02,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285720907] [2022-02-10 02:36:02,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285720907] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:36:02,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629392720] [2022-02-10 02:36:02,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:36:02,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:36:02,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:36:02,133 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:36:02,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 02:36:02,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:36:02,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:36:02,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 02:36:02,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:36:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 31 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:36:02,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:36:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 48 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:36:04,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629392720] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:36:04,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:36:04,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 25] total 59 [2022-02-10 02:36:04,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680416595] [2022-02-10 02:36:04,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:36:04,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-10 02:36:04,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:36:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-10 02:36:04,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2943, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:36:04,792 INFO L87 Difference]: Start difference. First operand 14750 states and 23706 transitions. Second operand has 59 states, 59 states have (on average 3.23728813559322) internal successors, (191), 59 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:36:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:36:11,190 INFO L93 Difference]: Finished difference Result 21583 states and 33809 transitions. [2022-02-10 02:36:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-10 02:36:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.23728813559322) internal successors, (191), 59 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have 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 02:36:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:36:11,227 INFO L225 Difference]: With dead ends: 21583 [2022-02-10 02:36:11,227 INFO L226 Difference]: Without dead ends: 21580 [2022-02-10 02:36:11,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9052 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4195, Invalid=24197, Unknown=0, NotChecked=0, Total=28392 [2022-02-10 02:36:11,231 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 620 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:36:11,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2077 Invalid, 3834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 02:36:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21580 states. [2022-02-10 02:36:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21580 to 13425. [2022-02-10 02:36:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13425 states, 13424 states have (on average 1.6040673420738976) internal successors, (21533), 13424 states have internal predecessors, (21533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:36:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 21533 transitions. [2022-02-10 02:36:11,447 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 21533 transitions. Word has length 100 [2022-02-10 02:36:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:36:11,447 INFO L470 AbstractCegarLoop]: Abstraction has 13425 states and 21533 transitions. [2022-02-10 02:36:11,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.23728813559322) internal successors, (191), 59 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:36:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 21533 transitions. [2022-02-10 02:36:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-10 02:36:11,465 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:36:11,465 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:11,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-10 02:36:11,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-02-10 02:36:11,666 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:36:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:36:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash 576596895, now seen corresponding path program 95 times [2022-02-10 02:36:11,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:36:11,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898422247] [2022-02-10 02:36:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:36:11,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:36:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:36:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:36:12,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:36:12,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898422247] [2022-02-10 02:36:12,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898422247] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:36:12,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126830932] [2022-02-10 02:36:12,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:36:12,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:36:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:36:12,104 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:36:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 02:36:12,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:36:12,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:36:12,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 02:36:12,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:36:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:36:12,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-02-10 02:36:13,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 02:36:13,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-10 02:36:13,558 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 02:36:13,559 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 02:36:13,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:36:13,725 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 101 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 48 known predicates. [2022-02-10 02:36:13,726 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 02:36:13,727 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 02:36:13,728 INFO L732 BasicCegarLoop]: Path program histogram: [95, 2, 1, 1] [2022-02-10 02:36:13,729 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 02:36:13,729 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 02:36:13,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 02:36:13 BasicIcfg [2022-02-10 02:36:13,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 02:36:13,731 INFO L158 Benchmark]: Toolchain (without parser) took 706866.63ms. Allocated memory was 178.3MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 119.6MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 838.6MB. Max. memory is 8.0GB. [2022-02-10 02:36:13,731 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 02:36:13,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.88ms. Allocated memory was 178.3MB in the beginning and 250.6MB in the end (delta: 72.4MB). Free memory was 119.4MB in the beginning and 221.6MB in the end (delta: -102.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-10 02:36:13,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.78ms. Allocated memory is still 250.6MB. Free memory was 221.6MB in the beginning and 220.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 02:36:13,731 INFO L158 Benchmark]: Boogie Preprocessor took 33.81ms. Allocated memory is still 250.6MB. Free memory was 220.1MB in the beginning and 218.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 02:36:13,732 INFO L158 Benchmark]: RCFGBuilder took 387.96ms. Allocated memory is still 250.6MB. Free memory was 218.5MB in the beginning and 204.3MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-10 02:36:13,732 INFO L158 Benchmark]: TraceAbstraction took 706171.85ms. Allocated memory was 250.6MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 203.8MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 850.6MB. Max. memory is 8.0GB. [2022-02-10 02:36:13,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.88ms. Allocated memory was 178.3MB in the beginning and 250.6MB in the end (delta: 72.4MB). Free memory was 119.4MB in the beginning and 221.6MB in the end (delta: -102.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.78ms. Allocated memory is still 250.6MB. Free memory was 221.6MB in the beginning and 220.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.81ms. Allocated memory is still 250.6MB. Free memory was 220.1MB in the beginning and 218.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 387.96ms. Allocated memory is still 250.6MB. Free memory was 218.5MB in the beginning and 204.3MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 706171.85ms. Allocated memory was 250.6MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 203.8MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 850.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - 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: 77]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 101 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 48 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 101 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 48 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 101 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 48 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 94 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 706.1s, OverallIterations: 99, TraceHistogramMax: 6, PathProgramHistogramMax: 95, EmptinessCheckTime: 2.6s, AutomataDifference: 523.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, PartialOrderReductionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71212 SdHoareTripleChecker+Valid, 78.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71212 mSDsluCounter, 183481 SdHoareTripleChecker+Invalid, 65.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 188339 mSDsCounter, 19535 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 203426 IncrementalHoareTripleChecker+Invalid, 222961 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19535 mSolverCounterUnsat, 11036 mSDtfsCounter, 203426 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32942 GetRequests, 14399 SyntacticMatches, 156 SemanticMatches, 18387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735875 ImplicationChecksByTransitivity, 479.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120299occurred in iteration=0, InterpolantAutomatonStates: 15481, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.8s AutomataMinimizationTime, 98 MinimizatonAttempts, 406644 StatesRemovedByMinimization, 98 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 133.1s InterpolantComputationTime, 17151 NumberOfCodeBlocks, 17062 NumberOfCodeBlocksAsserted, 442 NumberOfCheckSat, 25349 ConstructedInterpolants, 0 QuantifiedInterpolants, 135583 SizeOfPredicates, 1427 NumberOfNonLiveVariables, 17109 ConjunctsInSsa, 1980 ConjunctsInUnsatCore, 288 InterpolantComputations, 3 PerfectInterpolantSequences, 6170/19900 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