/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 01:29:53,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 01:29:53,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 01:29:53,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 01:29:53,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 01:29:53,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 01:29:53,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 01:29:53,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 01:29:53,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 01:29:53,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 01:29:53,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 01:29:53,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 01:29:53,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 01:29:53,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 01:29:53,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 01:29:53,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 01:29:53,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 01:29:53,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 01:29:53,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 01:29:53,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 01:29:53,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 01:29:53,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 01:29:53,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 01:29:53,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 01:29:53,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 01:29:53,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 01:29:53,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 01:29:53,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 01:29:53,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 01:29:53,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 01:29:53,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 01:29:53,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 01:29:53,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 01:29:53,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 01:29:53,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 01:29:53,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 01:29:53,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 01:29:53,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 01:29:53,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 01:29:53,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 01:29:53,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 01:29:53,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 01:29:53,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 01:29:53,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 01:29:53,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 01:29:53,189 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 01:29:53,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 01:29:53,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 01:29:53,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 01:29:53,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 01:29:53,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 01:29:53,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 01:29:53,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 01:29:53,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 01:29:53,197 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 01:29:53,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 01:29:53,198 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 01:29:53,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 01:29:53,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 01:29:53,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 01:29:53,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 01:29:53,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 01:29:53,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:29:53,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 01:29:53,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 01:29:53,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 01:29:53,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 01:29:53,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 01:29:53,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 01:29:53,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 01:29:53,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 01:29:53,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 01:29:53,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 01:29:53,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 01:29:53,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 01:29:53,446 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 01:29:53,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-01-18 01:29:53,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f510126/ffddaa076f20401fb97d0ae66c1f3c66/FLAGd8417c185 [2022-01-18 01:29:54,003 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 01:29:54,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-01-18 01:29:54,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f510126/ffddaa076f20401fb97d0ae66c1f3c66/FLAGd8417c185 [2022-01-18 01:29:54,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f510126/ffddaa076f20401fb97d0ae66c1f3c66 [2022-01-18 01:29:54,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 01:29:54,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 01:29:54,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 01:29:54,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 01:29:54,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 01:29:54,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768d31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54, skipping insertion in model container [2022-01-18 01:29:54,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 01:29:54,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 01:29:54,626 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/parallel-misc-5.wvr.c[3027,3040] [2022-01-18 01:29:54,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:29:54,635 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 01:29:54,662 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/parallel-misc-5.wvr.c[3027,3040] [2022-01-18 01:29:54,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:29:54,674 INFO L208 MainTranslator]: Completed translation [2022-01-18 01:29:54,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54 WrapperNode [2022-01-18 01:29:54,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 01:29:54,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 01:29:54,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 01:29:54,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 01:29:54,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,708 INFO L137 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2022-01-18 01:29:54,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 01:29:54,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 01:29:54,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 01:29:54,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 01:29:54,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 01:29:54,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 01:29:54,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 01:29:54,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 01:29:54,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (1/1) ... [2022-01-18 01:29:54,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:29:54,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:29:54,757 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) [2022-01-18 01:29:54,788 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 [2022-01-18 01:29:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 01:29:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 01:29:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 01:29:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 01:29:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 01:29:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 01:29:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 01:29:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 01:29:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 01:29:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 01:29:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 01:29:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 01:29:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 01:29:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 01:29:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 01:29:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 01:29:54,801 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 01:29:54,862 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 01:29:54,863 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 01:29:55,081 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 01:29:55,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 01:29:55,139 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 01:29:55,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:29:55 BoogieIcfgContainer [2022-01-18 01:29:55,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 01:29:55,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 01:29:55,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 01:29:55,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 01:29:55,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:29:54" (1/3) ... [2022-01-18 01:29:55,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4a4127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:29:55, skipping insertion in model container [2022-01-18 01:29:55,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:29:54" (2/3) ... [2022-01-18 01:29:55,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4a4127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:29:55, skipping insertion in model container [2022-01-18 01:29:55,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:29:55" (3/3) ... [2022-01-18 01:29:55,155 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-01-18 01:29:55,160 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 01:29:55,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 01:29:55,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 01:29:55,160 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 01:29:55,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,198 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,201 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,201 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,201 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,201 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,201 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,204 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,204 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,204 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,204 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,210 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,210 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,218 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,218 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:29:55,225 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 01:29:55,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 01:29:55,263 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 01:29:55,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 01:29:55,273 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 109 transitions, 242 flow [2022-01-18 01:29:55,445 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2916 states, 2915 states have (on average 3.608576329331046) internal successors, (10519), 2915 states have internal predecessors, (10519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 2916 states, 2915 states have (on average 3.608576329331046) internal successors, (10519), 2915 states have internal predecessors, (10519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 01:29:55,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:55,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:55,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:55,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:55,501 INFO L85 PathProgramCache]: Analyzing trace with hash 91463443, now seen corresponding path program 1 times [2022-01-18 01:29:55,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:55,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129715292] [2022-01-18 01:29:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:55,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:55,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:55,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129715292] [2022-01-18 01:29:55,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129715292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:29:55,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:29:55,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 01:29:55,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626071375] [2022-01-18 01:29:55,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:29:55,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 01:29:55,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 01:29:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:29:55,799 INFO L87 Difference]: Start difference. First operand has 2916 states, 2915 states have (on average 3.608576329331046) internal successors, (10519), 2915 states have internal predecessors, (10519), 0 states have call successors, (0), 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 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:55,891 INFO L93 Difference]: Finished difference Result 2916 states and 10016 transitions. [2022-01-18 01:29:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 01:29:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-18 01:29:55,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:55,972 INFO L225 Difference]: With dead ends: 2916 [2022-01-18 01:29:55,972 INFO L226 Difference]: Without dead ends: 2915 [2022-01-18 01:29:55,974 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 [2022-01-18 01:29:55,978 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:55,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:29:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2022-01-18 01:29:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2915. [2022-01-18 01:29:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 3.436856554564173) internal successors, (10015), 2914 states have internal predecessors, (10015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 10015 transitions. [2022-01-18 01:29:56,149 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 10015 transitions. Word has length 75 [2022-01-18 01:29:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:29:56,150 INFO L470 AbstractCegarLoop]: Abstraction has 2915 states and 10015 transitions. [2022-01-18 01:29:56,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 10015 transitions. [2022-01-18 01:29:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 01:29:56,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:56,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:56,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 01:29:56,163 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1049948689, now seen corresponding path program 1 times [2022-01-18 01:29:56,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:56,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465074828] [2022-01-18 01:29:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:56,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:56,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:56,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465074828] [2022-01-18 01:29:56,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465074828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:29:56,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:29:56,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 01:29:56,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126862497] [2022-01-18 01:29:56,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:29:56,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:29:56,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:29:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:29:56,445 INFO L87 Difference]: Start difference. First operand 2915 states and 10015 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:56,598 INFO L93 Difference]: Finished difference Result 2531 states and 8752 transitions. [2022-01-18 01:29:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 01:29:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-18 01:29:56,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:56,614 INFO L225 Difference]: With dead ends: 2531 [2022-01-18 01:29:56,615 INFO L226 Difference]: Without dead ends: 2531 [2022-01-18 01:29:56,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:29:56,619 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 152 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:56,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 277 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:29:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-01-18 01:29:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2531. [2022-01-18 01:29:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2530 states have (on average 3.459288537549407) internal successors, (8752), 2530 states have internal predecessors, (8752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 8752 transitions. [2022-01-18 01:29:56,766 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 8752 transitions. Word has length 75 [2022-01-18 01:29:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:29:56,767 INFO L470 AbstractCegarLoop]: Abstraction has 2531 states and 8752 transitions. [2022-01-18 01:29:56,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 8752 transitions. [2022-01-18 01:29:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 01:29:56,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:56,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:56,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 01:29:56,776 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1909334867, now seen corresponding path program 2 times [2022-01-18 01:29:56,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:56,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117219112] [2022-01-18 01:29:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:56,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:57,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:57,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117219112] [2022-01-18 01:29:57,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117219112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:29:57,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:29:57,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 01:29:57,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795053150] [2022-01-18 01:29:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:29:57,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 01:29:57,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 01:29:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:29:57,029 INFO L87 Difference]: Start difference. First operand 2531 states and 8752 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:57,166 INFO L93 Difference]: Finished difference Result 2663 states and 9215 transitions. [2022-01-18 01:29:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:29:57,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-18 01:29:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:57,192 INFO L225 Difference]: With dead ends: 2663 [2022-01-18 01:29:57,192 INFO L226 Difference]: Without dead ends: 2663 [2022-01-18 01:29:57,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 01:29:57,194 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 117 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:57,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 389 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:29:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-01-18 01:29:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2022-01-18 01:29:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 3.4616829451540196) internal successors, (9215), 2662 states have internal predecessors, (9215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 9215 transitions. [2022-01-18 01:29:57,270 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 9215 transitions. Word has length 75 [2022-01-18 01:29:57,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:29:57,271 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 9215 transitions. [2022-01-18 01:29:57,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 9215 transitions. [2022-01-18 01:29:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 01:29:57,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:57,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:57,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 01:29:57,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash 856506299, now seen corresponding path program 3 times [2022-01-18 01:29:57,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:57,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667329381] [2022-01-18 01:29:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:57,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:57,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:57,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667329381] [2022-01-18 01:29:57,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667329381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:29:57,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:29:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 01:29:57,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656025323] [2022-01-18 01:29:57,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:29:57,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 01:29:57,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 01:29:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:29:57,396 INFO L87 Difference]: Start difference. First operand 2663 states and 9215 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:57,647 INFO L93 Difference]: Finished difference Result 7439 states and 26444 transitions. [2022-01-18 01:29:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 01:29:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-18 01:29:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:57,669 INFO L225 Difference]: With dead ends: 7439 [2022-01-18 01:29:57,669 INFO L226 Difference]: Without dead ends: 3563 [2022-01-18 01:29:57,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 01:29:57,670 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 173 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:57,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 542 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:29:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-01-18 01:29:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3563. [2022-01-18 01:29:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3562 states have (on average 3.3613138686131387) internal successors, (11973), 3562 states have internal predecessors, (11973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 11973 transitions. [2022-01-18 01:29:57,769 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 11973 transitions. Word has length 75 [2022-01-18 01:29:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:29:57,769 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 11973 transitions. [2022-01-18 01:29:57,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 11973 transitions. [2022-01-18 01:29:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-18 01:29:57,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:57,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:57,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 01:29:57,780 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2004122008, now seen corresponding path program 1 times [2022-01-18 01:29:57,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:57,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963539657] [2022-01-18 01:29:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:57,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:57,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:57,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963539657] [2022-01-18 01:29:57,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963539657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:29:57,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:29:57,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 01:29:57,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431465623] [2022-01-18 01:29:57,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:29:57,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 01:29:57,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:57,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 01:29:57,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:29:57,922 INFO L87 Difference]: Start difference. First operand 3563 states and 11973 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:58,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:58,065 INFO L93 Difference]: Finished difference Result 5068 states and 17267 transitions. [2022-01-18 01:29:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:29:58,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-18 01:29:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:58,088 INFO L225 Difference]: With dead ends: 5068 [2022-01-18 01:29:58,089 INFO L226 Difference]: Without dead ends: 4060 [2022-01-18 01:29:58,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:29:58,090 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 113 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:58,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 459 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:29:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2022-01-18 01:29:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 4000. [2022-01-18 01:29:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3999 states have (on average 3.3220805201300325) internal successors, (13285), 3999 states have internal predecessors, (13285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 13285 transitions. [2022-01-18 01:29:58,275 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 13285 transitions. Word has length 80 [2022-01-18 01:29:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:29:58,276 INFO L470 AbstractCegarLoop]: Abstraction has 4000 states and 13285 transitions. [2022-01-18 01:29:58,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 13285 transitions. [2022-01-18 01:29:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-18 01:29:58,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:58,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:58,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 01:29:58,289 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash -596950538, now seen corresponding path program 2 times [2022-01-18 01:29:58,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:58,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101840233] [2022-01-18 01:29:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:58,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:58,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:58,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101840233] [2022-01-18 01:29:58,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101840233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:29:58,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:29:58,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 01:29:58,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864478363] [2022-01-18 01:29:58,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:29:58,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 01:29:58,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 01:29:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:29:58,366 INFO L87 Difference]: Start difference. First operand 4000 states and 13285 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:58,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:58,443 INFO L93 Difference]: Finished difference Result 6602 states and 21738 transitions. [2022-01-18 01:29:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 01:29:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-18 01:29:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:58,469 INFO L225 Difference]: With dead ends: 6602 [2022-01-18 01:29:58,469 INFO L226 Difference]: Without dead ends: 5866 [2022-01-18 01:29:58,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:29:58,470 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 191 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:58,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 193 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:29:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2022-01-18 01:29:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 4548. [2022-01-18 01:29:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 4547 states have (on average 3.316252474158786) internal successors, (15079), 4547 states have internal predecessors, (15079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 15079 transitions. [2022-01-18 01:29:58,625 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 15079 transitions. Word has length 80 [2022-01-18 01:29:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:29:58,625 INFO L470 AbstractCegarLoop]: Abstraction has 4548 states and 15079 transitions. [2022-01-18 01:29:58,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 15079 transitions. [2022-01-18 01:29:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-18 01:29:58,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:58,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:58,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 01:29:58,640 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1694261003, now seen corresponding path program 1 times [2022-01-18 01:29:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:58,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339647960] [2022-01-18 01:29:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:58,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:58,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339647960] [2022-01-18 01:29:58,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339647960] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:29:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618087527] [2022-01-18 01:29:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:58,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:29:58,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:29:58,727 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) [2022-01-18 01:29:58,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 01:29:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:58,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 01:29:58,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:29:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:59,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:29:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:59,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618087527] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:29:59,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:29:59,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 01:29:59,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012195900] [2022-01-18 01:29:59,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:29:59,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:29:59,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:59,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:29:59,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:29:59,206 INFO L87 Difference]: Start difference. First operand 4548 states and 15079 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:59,325 INFO L93 Difference]: Finished difference Result 7346 states and 24462 transitions. [2022-01-18 01:29:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 01:29:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-18 01:29:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:59,347 INFO L225 Difference]: With dead ends: 7346 [2022-01-18 01:29:59,347 INFO L226 Difference]: Without dead ends: 6107 [2022-01-18 01:29:59,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:29:59,348 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 191 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:59,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 331 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:29:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6107 states. [2022-01-18 01:29:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6107 to 4633. [2022-01-18 01:29:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4633 states, 4632 states have (on average 3.309153713298791) internal successors, (15328), 4632 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 15328 transitions. [2022-01-18 01:29:59,483 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 15328 transitions. Word has length 80 [2022-01-18 01:29:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:29:59,483 INFO L470 AbstractCegarLoop]: Abstraction has 4633 states and 15328 transitions. [2022-01-18 01:29:59,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 15328 transitions. [2022-01-18 01:29:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-18 01:29:59,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:29:59,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:29:59,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 01:29:59,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:29:59,712 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:29:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:29:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1152016885, now seen corresponding path program 2 times [2022-01-18 01:29:59,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:29:59,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288828762] [2022-01-18 01:29:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:29:59,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:29:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:29:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:29:59,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:29:59,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288828762] [2022-01-18 01:29:59,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288828762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:29:59,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:29:59,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 01:29:59,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623887991] [2022-01-18 01:29:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:29:59,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 01:29:59,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:29:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 01:29:59,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:29:59,769 INFO L87 Difference]: Start difference. First operand 4633 states and 15328 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:29:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:29:59,845 INFO L93 Difference]: Finished difference Result 7055 states and 23143 transitions. [2022-01-18 01:29:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 01:29:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-18 01:29:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:29:59,879 INFO L225 Difference]: With dead ends: 7055 [2022-01-18 01:29:59,879 INFO L226 Difference]: Without dead ends: 6433 [2022-01-18 01:29:59,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:29:59,880 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 139 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:29:59,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 180 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:29:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2022-01-18 01:30:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 5235. [2022-01-18 01:30:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 3.3056935422239206) internal successors, (17302), 5234 states have internal predecessors, (17302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 17302 transitions. [2022-01-18 01:30:00,104 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 17302 transitions. Word has length 80 [2022-01-18 01:30:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:00,105 INFO L470 AbstractCegarLoop]: Abstraction has 5235 states and 17302 transitions. [2022-01-18 01:30:00,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 17302 transitions. [2022-01-18 01:30:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 01:30:00,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:00,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:00,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 01:30:00,117 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:00,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1806504608, now seen corresponding path program 1 times [2022-01-18 01:30:00,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:00,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576631635] [2022-01-18 01:30:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:00,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:00,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576631635] [2022-01-18 01:30:00,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576631635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151998643] [2022-01-18 01:30:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:00,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:00,199 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) [2022-01-18 01:30:00,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 01:30:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:00,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 01:30:00,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:00,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:00,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151998643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:00,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:00,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-01-18 01:30:00,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707368489] [2022-01-18 01:30:00,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:00,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 01:30:00,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:00,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 01:30:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 01:30:00,735 INFO L87 Difference]: Start difference. First operand 5235 states and 17302 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:01,278 INFO L93 Difference]: Finished difference Result 14044 states and 46717 transitions. [2022-01-18 01:30:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:30:01,279 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 01:30:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:01,309 INFO L225 Difference]: With dead ends: 14044 [2022-01-18 01:30:01,309 INFO L226 Difference]: Without dead ends: 9391 [2022-01-18 01:30:01,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2022-01-18 01:30:01,310 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 588 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:01,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1746 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:30:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9391 states. [2022-01-18 01:30:01,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9391 to 6135. [2022-01-18 01:30:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6134 states have (on average 3.3059993478969676) internal successors, (20279), 6134 states have internal predecessors, (20279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 20279 transitions. [2022-01-18 01:30:01,486 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 20279 transitions. Word has length 85 [2022-01-18 01:30:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:01,486 INFO L470 AbstractCegarLoop]: Abstraction has 6135 states and 20279 transitions. [2022-01-18 01:30:01,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 20279 transitions. [2022-01-18 01:30:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 01:30:01,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:01,500 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:01,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:01,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-18 01:30:01,724 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash -159921894, now seen corresponding path program 2 times [2022-01-18 01:30:01,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:01,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347158407] [2022-01-18 01:30:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:01,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 01:30:01,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:01,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347158407] [2022-01-18 01:30:01,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347158407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:30:01,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:30:01,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 01:30:01,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640094277] [2022-01-18 01:30:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:30:01,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 01:30:01,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 01:30:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:30:01,840 INFO L87 Difference]: Start difference. First operand 6135 states and 20279 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:01,961 INFO L93 Difference]: Finished difference Result 9155 states and 30086 transitions. [2022-01-18 01:30:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 01:30:01,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 01:30:01,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:01,990 INFO L225 Difference]: With dead ends: 9155 [2022-01-18 01:30:01,990 INFO L226 Difference]: Without dead ends: 8975 [2022-01-18 01:30:01,990 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 [2022-01-18 01:30:01,991 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 123 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:01,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 348 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:30:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-01-18 01:30:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 6715. [2022-01-18 01:30:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6715 states, 6714 states have (on average 3.318588025022341) internal successors, (22281), 6714 states have internal predecessors, (22281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 22281 transitions. [2022-01-18 01:30:02,230 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 22281 transitions. Word has length 85 [2022-01-18 01:30:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:02,230 INFO L470 AbstractCegarLoop]: Abstraction has 6715 states and 22281 transitions. [2022-01-18 01:30:02,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 22281 transitions. [2022-01-18 01:30:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 01:30:02,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:02,247 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 01:30:02,247 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1245455102, now seen corresponding path program 3 times [2022-01-18 01:30:02,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:02,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721675026] [2022-01-18 01:30:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:02,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:02,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721675026] [2022-01-18 01:30:02,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721675026] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895672514] [2022-01-18 01:30:02,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:30:02,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:02,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:02,337 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) [2022-01-18 01:30:02,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 01:30:02,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 01:30:02,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:02,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 01:30:02,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:02,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:02,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895672514] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:02,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:02,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 01:30:02,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317472359] [2022-01-18 01:30:02,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:02,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 01:30:02,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 01:30:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 01:30:02,802 INFO L87 Difference]: Start difference. First operand 6715 states and 22281 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:03,028 INFO L93 Difference]: Finished difference Result 7322 states and 23516 transitions. [2022-01-18 01:30:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:30:03,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 01:30:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:03,050 INFO L225 Difference]: With dead ends: 7322 [2022-01-18 01:30:03,051 INFO L226 Difference]: Without dead ends: 7181 [2022-01-18 01:30:03,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-18 01:30:03,051 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 328 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:03,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 720 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:30:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7181 states. [2022-01-18 01:30:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7181 to 5734. [2022-01-18 01:30:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5733 states have (on average 3.230943659515088) internal successors, (18523), 5733 states have internal predecessors, (18523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 18523 transitions. [2022-01-18 01:30:03,195 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 18523 transitions. Word has length 85 [2022-01-18 01:30:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:03,195 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 18523 transitions. [2022-01-18 01:30:03,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 18523 transitions. [2022-01-18 01:30:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 01:30:03,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:03,208 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:03,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:03,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:03,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:03,432 INFO L85 PathProgramCache]: Analyzing trace with hash 431296120, now seen corresponding path program 4 times [2022-01-18 01:30:03,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:03,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646918043] [2022-01-18 01:30:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:03,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 01:30:03,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:03,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646918043] [2022-01-18 01:30:03,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646918043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:30:03,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:30:03,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 01:30:03,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999285577] [2022-01-18 01:30:03,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:30:03,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 01:30:03,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:03,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 01:30:03,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:30:03,500 INFO L87 Difference]: Start difference. First operand 5734 states and 18523 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:03,603 INFO L93 Difference]: Finished difference Result 5647 states and 18115 transitions. [2022-01-18 01:30:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 01:30:03,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 01:30:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:03,617 INFO L225 Difference]: With dead ends: 5647 [2022-01-18 01:30:03,618 INFO L226 Difference]: Without dead ends: 5407 [2022-01-18 01:30:03,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:30:03,618 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 114 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:03,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 378 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:30:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2022-01-18 01:30:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 5214. [2022-01-18 01:30:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 3.2651064646077117) internal successors, (17021), 5213 states have internal predecessors, (17021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 17021 transitions. [2022-01-18 01:30:03,731 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 17021 transitions. Word has length 85 [2022-01-18 01:30:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:03,732 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 17021 transitions. [2022-01-18 01:30:03,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 17021 transitions. [2022-01-18 01:30:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-18 01:30:03,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:03,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:03,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 01:30:03,744 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1870740605, now seen corresponding path program 5 times [2022-01-18 01:30:03,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:03,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466141281] [2022-01-18 01:30:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:03,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:30:03,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466141281] [2022-01-18 01:30:03,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466141281] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356879430] [2022-01-18 01:30:03,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:30:03,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:03,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:03,858 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) [2022-01-18 01:30:03,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 01:30:03,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 01:30:03,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:03,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 01:30:03,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:04,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:30:04,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356879430] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:04,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:04,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 20 [2022-01-18 01:30:04,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831860406] [2022-01-18 01:30:04,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:04,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:30:04,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:04,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:30:04,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:30:04,601 INFO L87 Difference]: Start difference. First operand 5214 states and 17021 transitions. Second operand has 20 states, 20 states have (on average 7.95) internal successors, (159), 20 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) [2022-01-18 01:30:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:06,012 INFO L93 Difference]: Finished difference Result 29426 states and 97076 transitions. [2022-01-18 01:30:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 01:30:06,012 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.95) internal successors, (159), 20 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 90 [2022-01-18 01:30:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:06,083 INFO L225 Difference]: With dead ends: 29426 [2022-01-18 01:30:06,083 INFO L226 Difference]: Without dead ends: 23795 [2022-01-18 01:30:06,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=665, Invalid=2305, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 01:30:06,085 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 1312 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:06,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 2484 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:30:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23795 states. [2022-01-18 01:30:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23795 to 13105. [2022-01-18 01:30:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13105 states, 13104 states have (on average 3.248855311355311) internal successors, (42573), 13104 states have internal predecessors, (42573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 42573 transitions. [2022-01-18 01:30:06,633 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 42573 transitions. Word has length 90 [2022-01-18 01:30:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:06,633 INFO L470 AbstractCegarLoop]: Abstraction has 13105 states and 42573 transitions. [2022-01-18 01:30:06,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.95) internal successors, (159), 20 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) [2022-01-18 01:30:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 42573 transitions. [2022-01-18 01:30:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-18 01:30:06,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:06,667 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:06,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:06,884 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash 795999572, now seen corresponding path program 1 times [2022-01-18 01:30:06,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255894132] [2022-01-18 01:30:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:06,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:30:07,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255894132] [2022-01-18 01:30:07,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255894132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:30:07,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:30:07,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:30:07,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112002742] [2022-01-18 01:30:07,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:30:07,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:30:07,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:30:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:30:07,009 INFO L87 Difference]: Start difference. First operand 13105 states and 42573 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:07,277 INFO L93 Difference]: Finished difference Result 20801 states and 67429 transitions. [2022-01-18 01:30:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:30:07,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-18 01:30:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:07,331 INFO L225 Difference]: With dead ends: 20801 [2022-01-18 01:30:07,331 INFO L226 Difference]: Without dead ends: 19085 [2022-01-18 01:30:07,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:30:07,332 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 171 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:07,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 661 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:30:07,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19085 states. [2022-01-18 01:30:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19085 to 17675. [2022-01-18 01:30:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17675 states, 17674 states have (on average 3.209177322620799) internal successors, (56719), 17674 states have internal predecessors, (56719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17675 states to 17675 states and 56719 transitions. [2022-01-18 01:30:08,058 INFO L78 Accepts]: Start accepts. Automaton has 17675 states and 56719 transitions. Word has length 90 [2022-01-18 01:30:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:08,059 INFO L470 AbstractCegarLoop]: Abstraction has 17675 states and 56719 transitions. [2022-01-18 01:30:08,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 17675 states and 56719 transitions. [2022-01-18 01:30:08,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-18 01:30:08,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:08,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:08,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 01:30:08,090 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash 860924875, now seen corresponding path program 1 times [2022-01-18 01:30:08,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:08,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42748324] [2022-01-18 01:30:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:08,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:08,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:08,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42748324] [2022-01-18 01:30:08,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42748324] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:08,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108029951] [2022-01-18 01:30:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:08,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:08,206 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) [2022-01-18 01:30:08,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 01:30:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:08,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 01:30:08,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:08,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:30:08,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108029951] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:08,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:08,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-01-18 01:30:08,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102219152] [2022-01-18 01:30:08,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:08,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 01:30:08,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 01:30:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:30:08,822 INFO L87 Difference]: Start difference. First operand 17675 states and 56719 transitions. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 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) [2022-01-18 01:30:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:09,673 INFO L93 Difference]: Finished difference Result 43105 states and 139981 transitions. [2022-01-18 01:30:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:30:09,674 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 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 95 [2022-01-18 01:30:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:09,818 INFO L225 Difference]: With dead ends: 43105 [2022-01-18 01:30:09,819 INFO L226 Difference]: Without dead ends: 39313 [2022-01-18 01:30:09,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-01-18 01:30:09,820 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 512 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:09,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1996 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:30:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39313 states. [2022-01-18 01:30:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39313 to 21233. [2022-01-18 01:30:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21233 states, 21232 states have (on average 3.1997456669178597) internal successors, (67937), 21232 states have internal predecessors, (67937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21233 states to 21233 states and 67937 transitions. [2022-01-18 01:30:10,519 INFO L78 Accepts]: Start accepts. Automaton has 21233 states and 67937 transitions. Word has length 95 [2022-01-18 01:30:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:10,520 INFO L470 AbstractCegarLoop]: Abstraction has 21233 states and 67937 transitions. [2022-01-18 01:30:10,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 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) [2022-01-18 01:30:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21233 states and 67937 transitions. [2022-01-18 01:30:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 01:30:10,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:10,563 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:10,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 01:30:10,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 01:30:10,783 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:10,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash -68395691, now seen corresponding path program 2 times [2022-01-18 01:30:10,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139025254] [2022-01-18 01:30:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:10,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:30:11,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:11,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139025254] [2022-01-18 01:30:11,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139025254] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:11,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552950309] [2022-01-18 01:30:11,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:30:11,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:11,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:11,048 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) [2022-01-18 01:30:11,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 01:30:11,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:30:11,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:11,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 01:30:11,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:30:11,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 01:30:11,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552950309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:11,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:11,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 17 [2022-01-18 01:30:11,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954144902] [2022-01-18 01:30:11,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:11,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 01:30:11,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 01:30:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-01-18 01:30:11,615 INFO L87 Difference]: Start difference. First operand 21233 states and 67937 transitions. Second operand has 17 states, 17 states have (on average 10.470588235294118) internal successors, (178), 17 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) [2022-01-18 01:30:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:12,658 INFO L93 Difference]: Finished difference Result 68593 states and 218423 transitions. [2022-01-18 01:30:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:30:12,658 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.470588235294118) internal successors, (178), 17 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 100 [2022-01-18 01:30:12,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:13,045 INFO L225 Difference]: With dead ends: 68593 [2022-01-18 01:30:13,045 INFO L226 Difference]: Without dead ends: 62031 [2022-01-18 01:30:13,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1044, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:30:13,046 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1303 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:13,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 1926 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:30:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62031 states. [2022-01-18 01:30:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62031 to 33073. [2022-01-18 01:30:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33073 states, 33072 states have (on average 3.1950290275761972) internal successors, (105666), 33072 states have internal predecessors, (105666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33073 states to 33073 states and 105666 transitions. [2022-01-18 01:30:14,002 INFO L78 Accepts]: Start accepts. Automaton has 33073 states and 105666 transitions. Word has length 100 [2022-01-18 01:30:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:14,003 INFO L470 AbstractCegarLoop]: Abstraction has 33073 states and 105666 transitions. [2022-01-18 01:30:14,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.470588235294118) internal successors, (178), 17 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) [2022-01-18 01:30:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 33073 states and 105666 transitions. [2022-01-18 01:30:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-18 01:30:14,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:14,077 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:14,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:14,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 01:30:14,280 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:14,280 INFO L85 PathProgramCache]: Analyzing trace with hash 100906940, now seen corresponding path program 3 times [2022-01-18 01:30:14,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:14,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927555700] [2022-01-18 01:30:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:14,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 01:30:14,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:14,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927555700] [2022-01-18 01:30:14,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927555700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:14,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095150545] [2022-01-18 01:30:14,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:30:14,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:14,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:14,400 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) [2022-01-18 01:30:14,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 01:30:14,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 01:30:14,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:14,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 01:30:14,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 01:30:14,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 01:30:14,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095150545] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:14,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:14,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-01-18 01:30:14,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946734930] [2022-01-18 01:30:14,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:14,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 01:30:14,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:14,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 01:30:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 01:30:14,977 INFO L87 Difference]: Start difference. First operand 33073 states and 105666 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:16,108 INFO L93 Difference]: Finished difference Result 78317 states and 252813 transitions. [2022-01-18 01:30:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 01:30:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-01-18 01:30:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:16,601 INFO L225 Difference]: With dead ends: 78317 [2022-01-18 01:30:16,601 INFO L226 Difference]: Without dead ends: 72653 [2022-01-18 01:30:16,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:30:16,603 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 797 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:16,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 1848 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:30:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72653 states. [2022-01-18 01:30:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72653 to 40607. [2022-01-18 01:30:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40607 states, 40606 states have (on average 3.1830271388464757) internal successors, (129250), 40606 states have internal predecessors, (129250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40607 states to 40607 states and 129250 transitions. [2022-01-18 01:30:17,769 INFO L78 Accepts]: Start accepts. Automaton has 40607 states and 129250 transitions. Word has length 105 [2022-01-18 01:30:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:17,769 INFO L470 AbstractCegarLoop]: Abstraction has 40607 states and 129250 transitions. [2022-01-18 01:30:17,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 40607 states and 129250 transitions. [2022-01-18 01:30:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-18 01:30:17,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:17,844 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:17,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:18,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:18,056 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash 137969707, now seen corresponding path program 4 times [2022-01-18 01:30:18,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:18,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259443695] [2022-01-18 01:30:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:18,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 01:30:18,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:18,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259443695] [2022-01-18 01:30:18,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259443695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:18,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797260450] [2022-01-18 01:30:18,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:30:18,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:18,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:18,172 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) [2022-01-18 01:30:18,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 01:30:18,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:30:18,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:18,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 01:30:18,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:30:18,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 01:30:18,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797260450] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:18,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:18,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 13 [2022-01-18 01:30:18,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440205224] [2022-01-18 01:30:18,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:18,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:30:18,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:30:18,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:30:18,706 INFO L87 Difference]: Start difference. First operand 40607 states and 129250 transitions. Second operand has 13 states, 13 states have (on average 12.615384615384615) internal successors, (164), 13 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:19,389 INFO L93 Difference]: Finished difference Result 71506 states and 227279 transitions. [2022-01-18 01:30:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 01:30:19,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.615384615384615) internal successors, (164), 13 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-01-18 01:30:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:19,577 INFO L225 Difference]: With dead ends: 71506 [2022-01-18 01:30:19,577 INFO L226 Difference]: Without dead ends: 66638 [2022-01-18 01:30:19,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:30:19,578 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 436 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:19,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 679 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:30:19,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66638 states. [2022-01-18 01:30:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66638 to 53899. [2022-01-18 01:30:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53899 states, 53898 states have (on average 3.197465583138521) internal successors, (172337), 53898 states have internal predecessors, (172337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53899 states to 53899 states and 172337 transitions. [2022-01-18 01:30:21,116 INFO L78 Accepts]: Start accepts. Automaton has 53899 states and 172337 transitions. Word has length 105 [2022-01-18 01:30:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:21,116 INFO L470 AbstractCegarLoop]: Abstraction has 53899 states and 172337 transitions. [2022-01-18 01:30:21,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.615384615384615) internal successors, (164), 13 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 53899 states and 172337 transitions. [2022-01-18 01:30:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 01:30:21,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:21,218 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:21,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:21,439 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,SelfDestructingSolverStorable17 [2022-01-18 01:30:21,439 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:21,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1562142160, now seen corresponding path program 5 times [2022-01-18 01:30:21,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:21,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938991919] [2022-01-18 01:30:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:21,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 01:30:21,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:21,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938991919] [2022-01-18 01:30:21,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938991919] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:21,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338730670] [2022-01-18 01:30:21,536 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:30:21,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:21,540 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) [2022-01-18 01:30:21,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 01:30:21,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 01:30:21,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:21,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 01:30:21,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 01:30:22,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 01:30:22,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338730670] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:22,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:22,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 14 [2022-01-18 01:30:22,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278770114] [2022-01-18 01:30:22,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:22,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 01:30:22,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 01:30:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-01-18 01:30:22,184 INFO L87 Difference]: Start difference. First operand 53899 states and 172337 transitions. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:23,187 INFO L93 Difference]: Finished difference Result 129946 states and 413583 transitions. [2022-01-18 01:30:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 01:30:23,187 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-18 01:30:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:23,592 INFO L225 Difference]: With dead ends: 129946 [2022-01-18 01:30:23,593 INFO L226 Difference]: Without dead ends: 124496 [2022-01-18 01:30:23,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:30:23,593 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 939 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:23,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 1353 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:30:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124496 states. [2022-01-18 01:30:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124496 to 75697. [2022-01-18 01:30:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75697 states, 75696 states have (on average 3.2082012259564574) internal successors, (242848), 75696 states have internal predecessors, (242848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75697 states to 75697 states and 242848 transitions. [2022-01-18 01:30:26,249 INFO L78 Accepts]: Start accepts. Automaton has 75697 states and 242848 transitions. Word has length 110 [2022-01-18 01:30:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:26,249 INFO L470 AbstractCegarLoop]: Abstraction has 75697 states and 242848 transitions. [2022-01-18 01:30:26,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 75697 states and 242848 transitions. [2022-01-18 01:30:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 01:30:26,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:26,393 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:26,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:26,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:26,593 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:26,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1857908203, now seen corresponding path program 6 times [2022-01-18 01:30:26,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:26,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579650532] [2022-01-18 01:30:26,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:26,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:30:26,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:26,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579650532] [2022-01-18 01:30:26,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579650532] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:26,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404920561] [2022-01-18 01:30:26,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:30:26,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:26,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:26,749 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) [2022-01-18 01:30:26,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 01:30:26,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 01:30:26,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:26,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:30:26,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 19 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 01:30:27,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 33 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 01:30:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404920561] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:27,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:27,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 23 [2022-01-18 01:30:27,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960783178] [2022-01-18 01:30:27,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:27,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 01:30:27,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 01:30:27,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:30:27,519 INFO L87 Difference]: Start difference. First operand 75697 states and 242848 transitions. Second operand has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:31,616 INFO L93 Difference]: Finished difference Result 253155 states and 825144 transitions. [2022-01-18 01:30:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 01:30:31,617 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-18 01:30:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:32,588 INFO L225 Difference]: With dead ends: 253155 [2022-01-18 01:30:32,588 INFO L226 Difference]: Without dead ends: 228555 [2022-01-18 01:30:32,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3138, Invalid=11142, Unknown=0, NotChecked=0, Total=14280 [2022-01-18 01:30:32,591 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1827 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 4844 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:32,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1827 Valid, 4844 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 01:30:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228555 states. [2022-01-18 01:30:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228555 to 72097. [2022-01-18 01:30:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72097 states, 72096 states have (on average 3.167762427873946) internal successors, (228383), 72096 states have internal predecessors, (228383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72097 states to 72097 states and 228383 transitions. [2022-01-18 01:30:35,933 INFO L78 Accepts]: Start accepts. Automaton has 72097 states and 228383 transitions. Word has length 115 [2022-01-18 01:30:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:35,933 INFO L470 AbstractCegarLoop]: Abstraction has 72097 states and 228383 transitions. [2022-01-18 01:30:35,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:35,933 INFO L276 IsEmpty]: Start isEmpty. Operand 72097 states and 228383 transitions. [2022-01-18 01:30:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-18 01:30:36,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:36,075 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:36,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-01-18 01:30:36,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:36,276 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:36,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1264223516, now seen corresponding path program 7 times [2022-01-18 01:30:36,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:36,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120136363] [2022-01-18 01:30:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:36,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 52 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-18 01:30:36,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:36,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120136363] [2022-01-18 01:30:36,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120136363] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:36,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290538335] [2022-01-18 01:30:36,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:30:36,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:36,373 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) [2022-01-18 01:30:36,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 01:30:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:36,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 01:30:36,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 52 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 01:30:36,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 52 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-18 01:30:36,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290538335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:36,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:36,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 11 [2022-01-18 01:30:36,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929143794] [2022-01-18 01:30:36,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:36,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 01:30:36,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:36,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 01:30:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-01-18 01:30:36,876 INFO L87 Difference]: Start difference. First operand 72097 states and 228383 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:37,434 INFO L93 Difference]: Finished difference Result 99553 states and 314257 transitions. [2022-01-18 01:30:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 01:30:37,435 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-18 01:30:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:38,177 INFO L225 Difference]: With dead ends: 99553 [2022-01-18 01:30:38,177 INFO L226 Difference]: Without dead ends: 97241 [2022-01-18 01:30:38,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:30:38,178 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 359 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:38,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 473 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:30:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97241 states. [2022-01-18 01:30:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97241 to 68243. [2022-01-18 01:30:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68243 states, 68242 states have (on average 3.1740130711292167) internal successors, (216601), 68242 states have internal predecessors, (216601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68243 states to 68243 states and 216601 transitions. [2022-01-18 01:30:39,688 INFO L78 Accepts]: Start accepts. Automaton has 68243 states and 216601 transitions. Word has length 120 [2022-01-18 01:30:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:39,689 INFO L470 AbstractCegarLoop]: Abstraction has 68243 states and 216601 transitions. [2022-01-18 01:30:39,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 68243 states and 216601 transitions. [2022-01-18 01:30:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-18 01:30:39,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:39,807 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:39,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:40,011 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,SelfDestructingSolverStorable20 [2022-01-18 01:30:40,011 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1184682140, now seen corresponding path program 8 times [2022-01-18 01:30:40,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:40,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320901443] [2022-01-18 01:30:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:40,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:30:40,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:40,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320901443] [2022-01-18 01:30:40,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320901443] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:40,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132912680] [2022-01-18 01:30:40,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:30:40,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:40,163 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) [2022-01-18 01:30:40,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 01:30:40,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:30:40,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:40,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 01:30:40,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 74 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:30:40,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:30:40,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132912680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:40,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:40,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 18 [2022-01-18 01:30:40,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581323218] [2022-01-18 01:30:40,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:40,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 01:30:40,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 01:30:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-01-18 01:30:40,798 INFO L87 Difference]: Start difference. First operand 68243 states and 216601 transitions. Second operand has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:42,614 INFO L93 Difference]: Finished difference Result 177759 states and 568908 transitions. [2022-01-18 01:30:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 01:30:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-18 01:30:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:30:43,693 INFO L225 Difference]: With dead ends: 177759 [2022-01-18 01:30:43,693 INFO L226 Difference]: Without dead ends: 169599 [2022-01-18 01:30:43,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=538, Invalid=1624, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:30:43,694 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 805 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:30:43,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 3017 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:30:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169599 states. [2022-01-18 01:30:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169599 to 119123. [2022-01-18 01:30:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119123 states, 119122 states have (on average 3.1736706905525427) internal successors, (378054), 119122 states have internal predecessors, (378054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119123 states to 119123 states and 378054 transitions. [2022-01-18 01:30:46,957 INFO L78 Accepts]: Start accepts. Automaton has 119123 states and 378054 transitions. Word has length 125 [2022-01-18 01:30:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:30:46,957 INFO L470 AbstractCegarLoop]: Abstraction has 119123 states and 378054 transitions. [2022-01-18 01:30:46,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 119123 states and 378054 transitions. [2022-01-18 01:30:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 01:30:47,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:30:47,852 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:30:47,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 01:30:48,055 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,SelfDestructingSolverStorable21 [2022-01-18 01:30:48,055 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:30:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:30:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash -546943369, now seen corresponding path program 9 times [2022-01-18 01:30:48,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:30:48,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784528330] [2022-01-18 01:30:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:30:48,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:30:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:30:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 85 proven. 53 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-18 01:30:48,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:30:48,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784528330] [2022-01-18 01:30:48,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784528330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:30:48,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384403971] [2022-01-18 01:30:48,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:30:48,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:30:48,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:30:48,176 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) [2022-01-18 01:30:48,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 01:30:48,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 01:30:48,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:30:48,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 01:30:48,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:30:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 17 proven. 123 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 01:30:48,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:30:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 5 proven. 138 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 01:30:49,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384403971] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:30:49,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:30:49,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 13] total 28 [2022-01-18 01:30:49,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531293583] [2022-01-18 01:30:49,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:30:49,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 01:30:49,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:30:49,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 01:30:49,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2022-01-18 01:30:49,219 INFO L87 Difference]: Start difference. First operand 119123 states and 378054 transitions. Second operand has 28 states, 28 states have (on average 8.714285714285714) internal successors, (244), 28 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:30:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:30:57,357 INFO L93 Difference]: Finished difference Result 816058 states and 2595043 transitions. [2022-01-18 01:30:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 01:30:57,357 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.714285714285714) internal successors, (244), 28 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-01-18 01:30:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:31:01,805 INFO L225 Difference]: With dead ends: 816058 [2022-01-18 01:31:01,805 INFO L226 Difference]: Without dead ends: 804634 [2022-01-18 01:31:01,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5597 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3300, Invalid=10272, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 01:31:01,808 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 4816 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:31:01,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4816 Valid, 4660 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 01:31:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804634 states. [2022-01-18 01:31:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804634 to 239711. [2022-01-18 01:31:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239711 states, 239710 states have (on average 3.188531976137833) internal successors, (764323), 239710 states have internal predecessors, (764323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239711 states to 239711 states and 764323 transitions. [2022-01-18 01:31:15,605 INFO L78 Accepts]: Start accepts. Automaton has 239711 states and 764323 transitions. Word has length 130 [2022-01-18 01:31:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:31:15,606 INFO L470 AbstractCegarLoop]: Abstraction has 239711 states and 764323 transitions. [2022-01-18 01:31:15,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.714285714285714) internal successors, (244), 28 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 239711 states and 764323 transitions. [2022-01-18 01:31:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 01:31:16,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:31:16,888 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:31:16,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 01:31:17,088 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,SelfDestructingSolverStorable22 [2022-01-18 01:31:17,089 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:31:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:31:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash 722839563, now seen corresponding path program 10 times [2022-01-18 01:31:17,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:31:17,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305001385] [2022-01-18 01:31:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:31:17,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:31:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:31:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 63 proven. 125 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:31:17,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:31:17,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305001385] [2022-01-18 01:31:17,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305001385] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:31:17,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361437296] [2022-01-18 01:31:17,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:31:17,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:31:17,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:31:17,277 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) [2022-01-18 01:31:17,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 01:31:17,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:31:17,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:31:17,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 01:31:17,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:31:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 45 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:31:17,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:31:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 101 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:31:18,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361437296] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:31:18,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:31:18,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 39 [2022-01-18 01:31:18,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349023455] [2022-01-18 01:31:18,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:31:18,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 01:31:18,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:31:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 01:31:18,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1135, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:31:18,310 INFO L87 Difference]: Start difference. First operand 239711 states and 764323 transitions. Second operand has 39 states, 39 states have (on average 6.384615384615385) internal successors, (249), 39 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:31,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:31:31,471 INFO L93 Difference]: Finished difference Result 905815 states and 2909890 transitions. [2022-01-18 01:31:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-01-18 01:31:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.384615384615385) internal successors, (249), 39 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-01-18 01:31:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:31:36,365 INFO L225 Difference]: With dead ends: 905815 [2022-01-18 01:31:36,365 INFO L226 Difference]: Without dead ends: 861583 [2022-01-18 01:31:36,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20416 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=11114, Invalid=44346, Unknown=0, NotChecked=0, Total=55460 [2022-01-18 01:31:36,371 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 3414 mSDsluCounter, 8525 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3414 SdHoareTripleChecker+Valid, 9067 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:31:36,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3414 Valid, 9067 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 01:31:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861583 states. [2022-01-18 01:31:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861583 to 99343. [2022-01-18 01:31:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99343 states, 99342 states have (on average 3.1760785971693744) internal successors, (315518), 99342 states have internal predecessors, (315518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99343 states to 99343 states and 315518 transitions. [2022-01-18 01:31:46,514 INFO L78 Accepts]: Start accepts. Automaton has 99343 states and 315518 transitions. Word has length 135 [2022-01-18 01:31:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:31:46,514 INFO L470 AbstractCegarLoop]: Abstraction has 99343 states and 315518 transitions. [2022-01-18 01:31:46,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.384615384615385) internal successors, (249), 39 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 99343 states and 315518 transitions. [2022-01-18 01:31:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-18 01:31:46,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:31:46,692 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:31:46,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 01:31:46,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:31:46,893 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:31:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:31:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash -264455356, now seen corresponding path program 11 times [2022-01-18 01:31:46,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:31:46,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793370961] [2022-01-18 01:31:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:31:46,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:31:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:31:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 126 proven. 86 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-18 01:31:47,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:31:47,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793370961] [2022-01-18 01:31:47,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793370961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:31:47,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167112526] [2022-01-18 01:31:47,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:31:47,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:31:47,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:31:47,026 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) [2022-01-18 01:31:47,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 01:31:47,165 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 01:31:47,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:31:47,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 01:31:47,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:31:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-18 01:31:47,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:31:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 126 proven. 86 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-18 01:31:47,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167112526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:31:47,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:31:47,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 13 [2022-01-18 01:31:47,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476739567] [2022-01-18 01:31:47,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:31:47,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:31:47,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:31:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:31:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:31:47,578 INFO L87 Difference]: Start difference. First operand 99343 states and 315518 transitions. Second operand has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:48,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:31:48,987 INFO L93 Difference]: Finished difference Result 155913 states and 493156 transitions. [2022-01-18 01:31:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:31:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-01-18 01:31:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:31:49,525 INFO L225 Difference]: With dead ends: 155913 [2022-01-18 01:31:49,525 INFO L226 Difference]: Without dead ends: 152641 [2022-01-18 01:31:49,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:31:49,526 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 408 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:31:49,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 615 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:31:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152641 states. [2022-01-18 01:31:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152641 to 105377. [2022-01-18 01:31:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105377 states, 105376 states have (on average 3.1734265866990587) internal successors, (334403), 105376 states have internal predecessors, (334403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105377 states to 105377 states and 334403 transitions. [2022-01-18 01:31:52,676 INFO L78 Accepts]: Start accepts. Automaton has 105377 states and 334403 transitions. Word has length 140 [2022-01-18 01:31:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:31:52,677 INFO L470 AbstractCegarLoop]: Abstraction has 105377 states and 334403 transitions. [2022-01-18 01:31:52,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 105377 states and 334403 transitions. [2022-01-18 01:31:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-18 01:31:52,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:31:52,876 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:31:52,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 01:31:53,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:31:53,079 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:31:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:31:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash -441716356, now seen corresponding path program 12 times [2022-01-18 01:31:53,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:31:53,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164902433] [2022-01-18 01:31:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:31:53,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:31:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:31:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 132 proven. 128 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 01:31:53,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:31:53,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164902433] [2022-01-18 01:31:53,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164902433] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:31:53,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996246600] [2022-01-18 01:31:53,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:31:53,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:31:53,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:31:53,249 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) [2022-01-18 01:31:53,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 01:31:53,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 01:31:53,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:31:53,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 01:31:53,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:31:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 97 proven. 163 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 01:31:53,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:31:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 129 proven. 131 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 01:31:53,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996246600] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:31:53,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:31:53,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 20 [2022-01-18 01:31:53,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467392204] [2022-01-18 01:31:53,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:31:53,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:31:53,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:31:53,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:31:53,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:31:53,979 INFO L87 Difference]: Start difference. First operand 105377 states and 334403 transitions. Second operand has 20 states, 20 states have (on average 8.4) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:31:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:31:58,413 INFO L93 Difference]: Finished difference Result 342849 states and 1095551 transitions. [2022-01-18 01:31:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 01:31:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.4) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-18 01:31:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:32:00,939 INFO L225 Difference]: With dead ends: 342849 [2022-01-18 01:32:00,940 INFO L226 Difference]: Without dead ends: 334785 [2022-01-18 01:32:00,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1671, Invalid=5301, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 01:32:00,959 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 704 mSDsluCounter, 4946 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 5431 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:32:00,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 5431 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:32:01,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334785 states. [2022-01-18 01:32:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334785 to 224579. [2022-01-18 01:32:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224579 states, 224578 states have (on average 3.167923839378746) internal successors, (711446), 224578 states have internal predecessors, (711446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:32:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224579 states to 224579 states and 711446 transitions. [2022-01-18 01:32:08,328 INFO L78 Accepts]: Start accepts. Automaton has 224579 states and 711446 transitions. Word has length 145 [2022-01-18 01:32:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:32:08,328 INFO L470 AbstractCegarLoop]: Abstraction has 224579 states and 711446 transitions. [2022-01-18 01:32:08,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.4) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:32:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 224579 states and 711446 transitions. [2022-01-18 01:32:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-18 01:32:09,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:32:09,609 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 7, 7, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:32:09,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 01:32:09,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 01:32:09,810 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:32:09,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:32:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash 341615383, now seen corresponding path program 13 times [2022-01-18 01:32:09,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:32:09,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462075276] [2022-01-18 01:32:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:32:09,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:32:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:32:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 175 proven. 127 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 01:32:10,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:32:10,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462075276] [2022-01-18 01:32:10,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462075276] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:32:10,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997705200] [2022-01-18 01:32:10,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:32:10,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:32:10,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:32:10,016 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) [2022-01-18 01:32:10,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 01:32:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:32:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:32:10,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:32:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 175 proven. 129 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 01:32:10,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:32:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 175 proven. 127 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 01:32:10,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997705200] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:32:10,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:32:10,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 14 [2022-01-18 01:32:10,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554844892] [2022-01-18 01:32:10,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:32:10,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 01:32:10,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:32:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 01:32:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-18 01:32:10,565 INFO L87 Difference]: Start difference. First operand 224579 states and 711446 transitions. Second operand has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:32:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:32:15,050 INFO L93 Difference]: Finished difference Result 585972 states and 1863735 transitions. [2022-01-18 01:32:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:32:15,051 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-01-18 01:32:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:32:17,629 INFO L225 Difference]: With dead ends: 585972 [2022-01-18 01:32:17,629 INFO L226 Difference]: Without dead ends: 573176 [2022-01-18 01:32:17,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-18 01:32:17,629 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 630 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:32:17,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 749 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:32:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573176 states. [2022-01-18 01:32:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573176 to 460185. [2022-01-18 01:32:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460185 states, 460184 states have (on average 3.1866492533421416) internal successors, (1466445), 460184 states have internal predecessors, (1466445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:32:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460185 states to 460185 states and 1466445 transitions. [2022-01-18 01:32:35,234 INFO L78 Accepts]: Start accepts. Automaton has 460185 states and 1466445 transitions. Word has length 150 [2022-01-18 01:32:35,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:32:35,235 INFO L470 AbstractCegarLoop]: Abstraction has 460185 states and 1466445 transitions. [2022-01-18 01:32:35,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:32:35,235 INFO L276 IsEmpty]: Start isEmpty. Operand 460185 states and 1466445 transitions. [2022-01-18 01:32:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-18 01:32:36,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:32:36,010 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:32:36,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 01:32:36,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 01:32:36,211 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:32:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:32:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1504486869, now seen corresponding path program 14 times [2022-01-18 01:32:36,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:32:36,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981677872] [2022-01-18 01:32:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:32:36,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:32:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:32:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 181 proven. 177 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 01:32:36,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:32:36,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981677872] [2022-01-18 01:32:36,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981677872] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:32:36,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525282019] [2022-01-18 01:32:36,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:32:36,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:32:36,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:32:36,400 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) [2022-01-18 01:32:36,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 01:32:36,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:32:36,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:32:36,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 01:32:36,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:32:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 143 proven. 215 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 01:32:36,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:32:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 181 proven. 177 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 01:32:37,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525282019] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:32:37,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:32:37,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 21 [2022-01-18 01:32:37,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935941387] [2022-01-18 01:32:37,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:32:37,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:32:37,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:32:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:32:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:32:37,024 INFO L87 Difference]: Start difference. First operand 460185 states and 1466445 transitions. Second operand has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 21 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) [2022-01-18 01:32:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:32:48,727 INFO L93 Difference]: Finished difference Result 1178871 states and 3774579 transitions. [2022-01-18 01:32:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 01:32:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 21 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 155 [2022-01-18 01:32:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:32:55,752 INFO L225 Difference]: With dead ends: 1178871 [2022-01-18 01:32:55,752 INFO L226 Difference]: Without dead ends: 1164423 [2022-01-18 01:32:55,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=961, Invalid=2821, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 01:32:55,753 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 953 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:32:55,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 4312 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:32:57,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164423 states. [2022-01-18 01:33:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164423 to 463687. [2022-01-18 01:33:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463687 states, 463686 states have (on average 3.1779156584412727) internal successors, (1473555), 463686 states have internal predecessors, (1473555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:33:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463687 states to 463687 states and 1473555 transitions. [2022-01-18 01:33:21,816 INFO L78 Accepts]: Start accepts. Automaton has 463687 states and 1473555 transitions. Word has length 155 [2022-01-18 01:33:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:33:21,818 INFO L470 AbstractCegarLoop]: Abstraction has 463687 states and 1473555 transitions. [2022-01-18 01:33:21,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 21 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) [2022-01-18 01:33:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 463687 states and 1473555 transitions. [2022-01-18 01:33:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 01:33:23,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:33:23,081 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 8, 8, 8, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:33:23,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 01:33:23,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 01:33:23,304 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:33:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:33:23,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1904516188, now seen corresponding path program 15 times [2022-01-18 01:33:23,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:33:23,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529933458] [2022-01-18 01:33:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:33:23,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:33:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:33:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-01-18 01:33:23,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:33:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529933458] [2022-01-18 01:33:23,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529933458] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:33:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626291161] [2022-01-18 01:33:23,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:33:23,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:33:23,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:33:23,586 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) [2022-01-18 01:33:23,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 01:33:23,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-01-18 01:33:23,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:33:23,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-18 01:33:23,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:33:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 29 proven. 381 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-18 01:33:24,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:33:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 5 proven. 408 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 01:33:25,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626291161] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:33:25,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:33:25,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 16] total 32 [2022-01-18 01:33:25,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318562721] [2022-01-18 01:33:25,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:33:25,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 01:33:25,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:33:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 01:33:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2022-01-18 01:33:25,271 INFO L87 Difference]: Start difference. First operand 463687 states and 1473555 transitions. Second operand has 32 states, 32 states have (on average 8.34375) internal successors, (267), 32 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:34:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:34:20,423 INFO L93 Difference]: Finished difference Result 3840723 states and 12239987 transitions. [2022-01-18 01:34:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2022-01-18 01:34:20,423 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 32 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-18 01:34:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:34:56,040 INFO L225 Difference]: With dead ends: 3840723 [2022-01-18 01:34:56,040 INFO L226 Difference]: Without dead ends: 3817587 [2022-01-18 01:34:56,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58669 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=23326, Invalid=91256, Unknown=0, NotChecked=0, Total=114582 [2022-01-18 01:34:56,066 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 15034 mSDsluCounter, 18146 mSDsCounter, 0 mSdLazyCounter, 5372 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15034 SdHoareTripleChecker+Valid, 18647 SdHoareTripleChecker+Invalid, 6617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:34:56,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15034 Valid, 18647 Invalid, 6617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1245 Valid, 5372 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-18 01:35:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3817587 states. [2022-01-18 01:36:35,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3817587 to 937333. [2022-01-18 01:36:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937333 states, 937332 states have (on average 3.18992096717065) internal successors, (2990015), 937332 states have internal predecessors, (2990015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:36:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937333 states to 937333 states and 2990015 transitions. [2022-01-18 01:36:47,834 INFO L78 Accepts]: Start accepts. Automaton has 937333 states and 2990015 transitions. Word has length 160 [2022-01-18 01:36:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:36:47,834 INFO L470 AbstractCegarLoop]: Abstraction has 937333 states and 2990015 transitions. [2022-01-18 01:36:47,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 32 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:36:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 937333 states and 2990015 transitions. [2022-01-18 01:36:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-18 01:36:52,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:36:52,234 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:36:52,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 01:36:52,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 01:36:52,458 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 01:36:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:36:52,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1254679972, now seen corresponding path program 16 times [2022-01-18 01:36:52,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:36:52,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819338602] [2022-01-18 01:36:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:36:52,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:36:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:36:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 159 proven. 332 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:36:52,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:36:52,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819338602] [2022-01-18 01:36:52,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819338602] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:36:52,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764267327] [2022-01-18 01:36:52,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:36:52,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:36:52,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:36:52,824 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) [2022-01-18 01:36:52,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 01:36:52,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:36:52,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:36:52,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 01:36:52,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:36:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 129 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:36:54,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:36:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 257 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:36:55,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764267327] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:36:55,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:36:55,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 51 [2022-01-18 01:36:55,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271522427] [2022-01-18 01:36:55,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:36:55,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 01:36:55,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:36:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 01:36:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=1930, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 01:36:55,323 INFO L87 Difference]: Start difference. First operand 937333 states and 2990015 transitions. Second operand has 51 states, 51 states have (on average 6.0588235294117645) internal successors, (309), 51 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)