/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:56:31,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:56:31,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:56:32,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:56:32,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:56:32,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:56:32,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:56:32,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:56:32,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:56:32,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:56:32,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:56:32,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:56:32,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:56:32,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:56:32,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:56:32,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:56:32,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:56:32,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:56:32,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:56:32,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:56:32,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:56:32,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:56:32,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:56:32,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:56:32,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 22:56:32,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 22:56:32,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 22:56:32,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 22:56:32,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 22:56:32,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-10 22:56:32,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-10 22:56:32,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-10 22:56:32,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-10 22:56:32,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-10 22:56:32,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-10 22:56:32,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-10 22:56:32,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-10 22:56:32,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-10 22:56:32,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:56:32,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:56:32,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:56:32,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 22:56:32,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:56:32,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:56:32,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:56:32,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:56:32,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:56:32,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:56:32,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:56:32,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:56:32,059 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:56:32,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:56:32,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:56:32,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:56:32,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:56:32,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:56:32,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:56:32,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:56:32,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:56:32,060 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:56:32,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:56:32,060 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:56:32,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:56:32,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:56:32,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:56:32,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:56:32,061 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:56:32,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:56:32,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:56:32,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:56:32,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:56:32,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:56:32,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:56:32,263 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:56:32,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2022-02-10 22:56:32,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1494c0a1/f287887ed35a4a78ba34565595cdee77/FLAGbecc4f0a8 [2022-02-10 22:56:32,648 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:56:32,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2022-02-10 22:56:32,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1494c0a1/f287887ed35a4a78ba34565595cdee77/FLAGbecc4f0a8 [2022-02-10 22:56:32,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1494c0a1/f287887ed35a4a78ba34565595cdee77 [2022-02-10 22:56:32,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:56:32,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:56:32,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:56:32,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:56:32,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:56:32,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71198546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32, skipping insertion in model container [2022-02-10 22:56:32,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:56:32,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:56:32,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c[2612,2625] [2022-02-10 22:56:32,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:56:32,818 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:56:32,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c[2612,2625] [2022-02-10 22:56:32,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:56:32,841 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:56:32,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32 WrapperNode [2022-02-10 22:56:32,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:56:32,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:56:32,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:56:32,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:56:32,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,874 INFO L137 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2022-02-10 22:56:32,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:56:32,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:56:32,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:56:32,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:56:32,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:56:32,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:56:32,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:56:32,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:56:32,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (1/1) ... [2022-02-10 22:56:32,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:56:32,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:56:32,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 22:56:32,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 22:56:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:56:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:56:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:56:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:56:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:56:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-10 22:56:32,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-10 22:56:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-02-10 22:56:32,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-02-10 22:56:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:56:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:56:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:56:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 22:56:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 22:56:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:56:32,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:56:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:56:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:56:32,951 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 22:56:33,014 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:56:33,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:56:33,188 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:56:33,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:56:33,246 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-10 22:56:33,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:56:33 BoogieIcfgContainer [2022-02-10 22:56:33,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:56:33,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:56:33,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:56:33,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:56:33,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:56:32" (1/3) ... [2022-02-10 22:56:33,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4ff4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:56:33, skipping insertion in model container [2022-02-10 22:56:33,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:56:32" (2/3) ... [2022-02-10 22:56:33,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4ff4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:56:33, skipping insertion in model container [2022-02-10 22:56:33,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:56:33" (3/3) ... [2022-02-10 22:56:33,254 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2022-02-10 22:56:33,258 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:56:33,258 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:56:33,258 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:56:33,258 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:56:33,318 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,318 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,319 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,319 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,320 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,320 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,321 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,321 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,321 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,321 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,321 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,321 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,322 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,322 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,322 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,322 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,322 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,323 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,323 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,323 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,324 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,324 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,324 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,325 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,327 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,327 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,328 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,328 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,328 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,329 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,329 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,329 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,331 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,331 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,332 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,332 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,332 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,332 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,332 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,332 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,333 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,333 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,333 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,333 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,333 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,334 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,334 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,335 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,336 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,336 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,336 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,336 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,337 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,337 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,337 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,337 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,337 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,338 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,338 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,338 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,339 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,339 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,340 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,340 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,340 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,340 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,341 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,343 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,343 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,344 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,345 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,345 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,346 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,346 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,347 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,347 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,347 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,347 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,348 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,348 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,348 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,348 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,349 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,349 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,349 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,349 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,351 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,353 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,355 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,355 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,356 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,356 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,356 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,356 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,356 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,357 WARN L322 ript$VariableManager]: TermVariable thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,357 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,357 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,357 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,357 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,357 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,357 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,358 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,358 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,358 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,358 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,358 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,358 WARN L322 ript$VariableManager]: TermVariable |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:56:33,361 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-10 22:56:33,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:56:33,414 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 22:56:33,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-10 22:56:33,425 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 133 transitions, 298 flow [2022-02-10 22:56:34,546 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 33659 states, 33658 states have (on average 4.971180699982174) internal successors, (167320), 33658 states have internal predecessors, (167320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 33659 states, 33658 states have (on average 4.971180699982174) internal successors, (167320), 33658 states have internal predecessors, (167320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-10 22:56:34,959 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:34,959 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:56:34,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:56:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1708599078, now seen corresponding path program 1 times [2022-02-10 22:56:34,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:34,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938888603] [2022-02-10 22:56:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:35,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:35,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938888603] [2022-02-10 22:56:35,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938888603] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:56:35,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:56:35,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:56:35,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804274001] [2022-02-10 22:56:35,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:56:35,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:56:35,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:56:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:56:35,247 INFO L87 Difference]: Start difference. First operand has 33659 states, 33658 states have (on average 4.971180699982174) internal successors, (167320), 33658 states have internal predecessors, (167320), 0 states have call successors, (0), 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 44.0) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:35,854 INFO L93 Difference]: Finished difference Result 33659 states and 153296 transitions. [2022-02-10 22:56:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:56:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-02-10 22:56:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:36,265 INFO L225 Difference]: With dead ends: 33659 [2022-02-10 22:56:36,265 INFO L226 Difference]: Without dead ends: 33657 [2022-02-10 22:56:36,266 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:56:36,269 INFO L934 BasicCegarLoop]: 100 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, 100 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 [2022-02-10 22:56:36,271 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:56:36,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33657 states. [2022-02-10 22:56:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33657 to 33657. [2022-02-10 22:56:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33657 states, 33656 states have (on average 4.554730211552175) internal successors, (153294), 33656 states have internal predecessors, (153294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33657 states to 33657 states and 153294 transitions. [2022-02-10 22:56:37,872 INFO L78 Accepts]: Start accepts. Automaton has 33657 states and 153294 transitions. Word has length 88 [2022-02-10 22:56:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:37,872 INFO L470 AbstractCegarLoop]: Abstraction has 33657 states and 153294 transitions. [2022-02-10 22:56:37,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33657 states and 153294 transitions. [2022-02-10 22:56:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-10 22:56:38,014 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:38,014 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:56:38,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:56:38,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:56:38,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash 560306940, now seen corresponding path program 1 times [2022-02-10 22:56:38,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:38,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067245884] [2022-02-10 22:56:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:38,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:38,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067245884] [2022-02-10 22:56:38,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067245884] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:56:38,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:56:38,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:56:38,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844340285] [2022-02-10 22:56:38,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:56:38,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:56:38,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:56:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:56:38,206 INFO L87 Difference]: Start difference. First operand 33657 states and 153294 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:38,894 INFO L93 Difference]: Finished difference Result 40731 states and 182634 transitions. [2022-02-10 22:56:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:56:38,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-02-10 22:56:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:39,195 INFO L225 Difference]: With dead ends: 40731 [2022-02-10 22:56:39,195 INFO L226 Difference]: Without dead ends: 38709 [2022-02-10 22:56:39,196 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:56:39,197 INFO L934 BasicCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:39,197 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 347 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:56:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38709 states. [2022-02-10 22:56:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38709 to 38277. [2022-02-10 22:56:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38277 states, 38276 states have (on average 4.508229700073153) internal successors, (172557), 38276 states have internal predecessors, (172557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38277 states to 38277 states and 172557 transitions. [2022-02-10 22:56:40,768 INFO L78 Accepts]: Start accepts. Automaton has 38277 states and 172557 transitions. Word has length 88 [2022-02-10 22:56:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:40,768 INFO L470 AbstractCegarLoop]: Abstraction has 38277 states and 172557 transitions. [2022-02-10 22:56:40,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 38277 states and 172557 transitions. [2022-02-10 22:56:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 22:56:40,877 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:40,877 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:56:40,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:56:40,877 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:56:40,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:40,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1145915436, now seen corresponding path program 1 times [2022-02-10 22:56:40,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:40,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881054402] [2022-02-10 22:56:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:40,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:41,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:41,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881054402] [2022-02-10 22:56:41,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881054402] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:56:41,068 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:56:41,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:56:41,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003598024] [2022-02-10 22:56:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:56:41,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:56:41,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:56:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:56:41,071 INFO L87 Difference]: Start difference. First operand 38277 states and 172557 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:42,022 INFO L93 Difference]: Finished difference Result 63219 states and 280029 transitions. [2022-02-10 22:56:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:56:42,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-10 22:56:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:42,351 INFO L225 Difference]: With dead ends: 63219 [2022-02-10 22:56:42,351 INFO L226 Difference]: Without dead ends: 61095 [2022-02-10 22:56:42,352 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:56:42,352 INFO L934 BasicCegarLoop]: 199 mSDtfsCounter, 136 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:42,353 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 556 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:56:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61095 states. [2022-02-10 22:56:43,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61095 to 50217. [2022-02-10 22:56:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50217 states, 50216 states have (on average 4.463278636291222) internal successors, (224128), 50216 states have internal predecessors, (224128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50217 states to 50217 states and 224128 transitions. [2022-02-10 22:56:44,551 INFO L78 Accepts]: Start accepts. Automaton has 50217 states and 224128 transitions. Word has length 93 [2022-02-10 22:56:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:44,551 INFO L470 AbstractCegarLoop]: Abstraction has 50217 states and 224128 transitions. [2022-02-10 22:56:44,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 50217 states and 224128 transitions. [2022-02-10 22:56:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 22:56:44,728 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:44,728 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:56:44,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 22:56:44,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:56:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:44,729 INFO L85 PathProgramCache]: Analyzing trace with hash -697904180, now seen corresponding path program 1 times [2022-02-10 22:56:44,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:44,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407622690] [2022-02-10 22:56:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:44,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:44,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:44,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407622690] [2022-02-10 22:56:44,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407622690] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:56:44,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:56:44,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 22:56:44,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467835078] [2022-02-10 22:56:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:56:44,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:56:44,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:56:44,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:56:44,858 INFO L87 Difference]: Start difference. First operand 50217 states and 224128 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:45,615 INFO L93 Difference]: Finished difference Result 71756 states and 319699 transitions. [2022-02-10 22:56:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:56:45,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-10 22:56:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:46,191 INFO L225 Difference]: With dead ends: 71756 [2022-02-10 22:56:46,191 INFO L226 Difference]: Without dead ends: 69278 [2022-02-10 22:56:46,191 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:56:46,192 INFO L934 BasicCegarLoop]: 159 mSDtfsCounter, 110 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:46,192 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 329 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:56:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69278 states. [2022-02-10 22:56:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69278 to 53251. [2022-02-10 22:56:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53251 states, 53250 states have (on average 4.474985915492958) internal successors, (238293), 53250 states have internal predecessors, (238293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53251 states to 53251 states and 238293 transitions. [2022-02-10 22:56:48,179 INFO L78 Accepts]: Start accepts. Automaton has 53251 states and 238293 transitions. Word has length 93 [2022-02-10 22:56:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:48,180 INFO L470 AbstractCegarLoop]: Abstraction has 53251 states and 238293 transitions. [2022-02-10 22:56:48,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 53251 states and 238293 transitions. [2022-02-10 22:56:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 22:56:48,329 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:48,330 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:56:48,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 22:56:48,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:56:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1068497080, now seen corresponding path program 2 times [2022-02-10 22:56:48,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:48,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216859116] [2022-02-10 22:56:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:48,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:48,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:48,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216859116] [2022-02-10 22:56:48,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216859116] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:56:48,420 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:56:48,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 22:56:48,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197776887] [2022-02-10 22:56:48,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:56:48,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:56:48,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:56:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:56:48,421 INFO L87 Difference]: Start difference. First operand 53251 states and 238293 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:49,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:49,268 INFO L93 Difference]: Finished difference Result 89701 states and 395838 transitions. [2022-02-10 22:56:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:56:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-10 22:56:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:49,929 INFO L225 Difference]: With dead ends: 89701 [2022-02-10 22:56:49,929 INFO L226 Difference]: Without dead ends: 88765 [2022-02-10 22:56:49,929 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:56:49,930 INFO L934 BasicCegarLoop]: 169 mSDtfsCounter, 133 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:49,930 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 372 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:56:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88765 states. [2022-02-10 22:56:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88765 to 63121. [2022-02-10 22:56:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63121 states, 63120 states have (on average 4.501489226869455) internal successors, (284134), 63120 states have internal predecessors, (284134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63121 states to 63121 states and 284134 transitions. [2022-02-10 22:56:52,578 INFO L78 Accepts]: Start accepts. Automaton has 63121 states and 284134 transitions. Word has length 93 [2022-02-10 22:56:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:52,579 INFO L470 AbstractCegarLoop]: Abstraction has 63121 states and 284134 transitions. [2022-02-10 22:56:52,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 63121 states and 284134 transitions. [2022-02-10 22:56:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 22:56:52,780 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:52,780 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:56:52,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 22:56:52,781 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:56:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1833939858, now seen corresponding path program 3 times [2022-02-10 22:56:52,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:52,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073310867] [2022-02-10 22:56:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:52,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:52,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073310867] [2022-02-10 22:56:52,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073310867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:56:52,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:56:52,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 22:56:52,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96547876] [2022-02-10 22:56:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:56:52,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:56:52,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:56:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:56:52,870 INFO L87 Difference]: Start difference. First operand 63121 states and 284134 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:53,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:53,697 INFO L93 Difference]: Finished difference Result 76706 states and 343340 transitions. [2022-02-10 22:56:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:56:53,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-10 22:56:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:54,109 INFO L225 Difference]: With dead ends: 76706 [2022-02-10 22:56:54,109 INFO L226 Difference]: Without dead ends: 75467 [2022-02-10 22:56:54,110 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 22:56:54,110 INFO L934 BasicCegarLoop]: 161 mSDtfsCounter, 103 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:54,111 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 289 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:56:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75467 states. [2022-02-10 22:56:55,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75467 to 51516. [2022-02-10 22:56:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51516 states, 51515 states have (on average 4.475511986799961) internal successors, (230556), 51515 states have internal predecessors, (230556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51516 states to 51516 states and 230556 transitions. [2022-02-10 22:56:56,132 INFO L78 Accepts]: Start accepts. Automaton has 51516 states and 230556 transitions. Word has length 93 [2022-02-10 22:56:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:56,133 INFO L470 AbstractCegarLoop]: Abstraction has 51516 states and 230556 transitions. [2022-02-10 22:56:56,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 51516 states and 230556 transitions. [2022-02-10 22:56:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:56:56,267 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:56,267 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:56:56,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 22:56:56,268 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:56:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2054734952, now seen corresponding path program 1 times [2022-02-10 22:56:56,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:56,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857096138] [2022-02-10 22:56:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:56,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:56:56,663 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:56,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857096138] [2022-02-10 22:56:56,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857096138] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:56:56,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502599147] [2022-02-10 22:56:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:56,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:56:56,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:56:56,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:56:56,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 22:56:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:56,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 22:56:56,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:56:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:56:56,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:56:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:56:57,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502599147] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 22:56:57,143 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 22:56:57,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-02-10 22:56:57,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213433687] [2022-02-10 22:56:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:56:57,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:56:57,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:56:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:56:57,144 INFO L87 Difference]: Start difference. First operand 51516 states and 230556 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:57,531 INFO L93 Difference]: Finished difference Result 55339 states and 247957 transitions. [2022-02-10 22:56:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:56:57,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:56:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:57,962 INFO L225 Difference]: With dead ends: 55339 [2022-02-10 22:56:57,963 INFO L226 Difference]: Without dead ends: 55339 [2022-02-10 22:56:57,963 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:56:57,963 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 95 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:57,964 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 258 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:56:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55339 states. [2022-02-10 22:56:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55339 to 55339. [2022-02-10 22:56:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55339 states, 55338 states have (on average 4.480772705916369) internal successors, (247957), 55338 states have internal predecessors, (247957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55339 states to 55339 states and 247957 transitions. [2022-02-10 22:56:59,658 INFO L78 Accepts]: Start accepts. Automaton has 55339 states and 247957 transitions. Word has length 98 [2022-02-10 22:56:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:59,659 INFO L470 AbstractCegarLoop]: Abstraction has 55339 states and 247957 transitions. [2022-02-10 22:56:59,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 55339 states and 247957 transitions. [2022-02-10 22:57:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:00,088 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:00,088 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:00,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:00,288 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 [2022-02-10 22:57:00,288 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:00,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1162914164, now seen corresponding path program 1 times [2022-02-10 22:57:00,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:00,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616554093] [2022-02-10 22:57:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:00,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:00,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616554093] [2022-02-10 22:57:00,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616554093] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:00,360 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:00,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:00,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616064793] [2022-02-10 22:57:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:00,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:00,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:00,360 INFO L87 Difference]: Start difference. First operand 55339 states and 247957 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:01,240 INFO L93 Difference]: Finished difference Result 85069 states and 383068 transitions. [2022-02-10 22:57:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:57:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:01,652 INFO L225 Difference]: With dead ends: 85069 [2022-02-10 22:57:01,652 INFO L226 Difference]: Without dead ends: 85069 [2022-02-10 22:57:01,653 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:01,653 INFO L934 BasicCegarLoop]: 182 mSDtfsCounter, 119 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:01,653 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 447 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85069 states. [2022-02-10 22:57:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85069 to 62530. [2022-02-10 22:57:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62530 states, 62529 states have (on average 4.458203393625358) internal successors, (278767), 62529 states have internal predecessors, (278767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62530 states to 62530 states and 278767 transitions. [2022-02-10 22:57:04,385 INFO L78 Accepts]: Start accepts. Automaton has 62530 states and 278767 transitions. Word has length 98 [2022-02-10 22:57:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:04,395 INFO L470 AbstractCegarLoop]: Abstraction has 62530 states and 278767 transitions. [2022-02-10 22:57:04,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 62530 states and 278767 transitions. [2022-02-10 22:57:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:04,840 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:04,840 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:04,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-10 22:57:04,840 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:04,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2119087668, now seen corresponding path program 2 times [2022-02-10 22:57:04,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:04,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408523017] [2022-02-10 22:57:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:04,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:04,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:04,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408523017] [2022-02-10 22:57:04,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408523017] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:04,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:04,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:57:04,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664444117] [2022-02-10 22:57:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:04,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:04,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:04,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:04,938 INFO L87 Difference]: Start difference. First operand 62530 states and 278767 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:05,844 INFO L93 Difference]: Finished difference Result 88758 states and 398107 transitions. [2022-02-10 22:57:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:05,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:06,245 INFO L225 Difference]: With dead ends: 88758 [2022-02-10 22:57:06,245 INFO L226 Difference]: Without dead ends: 88758 [2022-02-10 22:57:06,245 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:06,246 INFO L934 BasicCegarLoop]: 215 mSDtfsCounter, 159 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:06,246 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 796 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:06,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88758 states. [2022-02-10 22:57:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88758 to 65588. [2022-02-10 22:57:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65588 states, 65587 states have (on average 4.465122661503042) internal successors, (292854), 65587 states have internal predecessors, (292854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65588 states to 65588 states and 292854 transitions. [2022-02-10 22:57:08,825 INFO L78 Accepts]: Start accepts. Automaton has 65588 states and 292854 transitions. Word has length 98 [2022-02-10 22:57:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:08,826 INFO L470 AbstractCegarLoop]: Abstraction has 65588 states and 292854 transitions. [2022-02-10 22:57:08,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 65588 states and 292854 transitions. [2022-02-10 22:57:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:09,035 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:09,035 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:09,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 22:57:09,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash 776329516, now seen corresponding path program 2 times [2022-02-10 22:57:09,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:09,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063018527] [2022-02-10 22:57:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:09,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:09,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:09,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063018527] [2022-02-10 22:57:09,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063018527] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:09,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046075349] [2022-02-10 22:57:09,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:57:09,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:09,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:09,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:57:09,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 22:57:09,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:57:09,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:09,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 22:57:09,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:09,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:57:09,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046075349] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:09,345 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:57:09,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-02-10 22:57:09,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523657970] [2022-02-10 22:57:09,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:09,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 22:57:09,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 22:57:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:57:09,346 INFO L87 Difference]: Start difference. First operand 65588 states and 292854 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:10,263 INFO L93 Difference]: Finished difference Result 87554 states and 392961 transitions. [2022-02-10 22:57:10,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 22:57:10,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:10,855 INFO L225 Difference]: With dead ends: 87554 [2022-02-10 22:57:10,855 INFO L226 Difference]: Without dead ends: 83213 [2022-02-10 22:57:10,855 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:57:10,856 INFO L934 BasicCegarLoop]: 150 mSDtfsCounter, 98 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:10,856 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 316 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83213 states. [2022-02-10 22:57:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83213 to 59564. [2022-02-10 22:57:12,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59564 states, 59563 states have (on average 4.520759531924181) internal successors, (269270), 59563 states have internal predecessors, (269270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59564 states to 59564 states and 269270 transitions. [2022-02-10 22:57:13,154 INFO L78 Accepts]: Start accepts. Automaton has 59564 states and 269270 transitions. Word has length 98 [2022-02-10 22:57:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:13,154 INFO L470 AbstractCegarLoop]: Abstraction has 59564 states and 269270 transitions. [2022-02-10 22:57:13,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 59564 states and 269270 transitions. [2022-02-10 22:57:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:13,322 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:13,322 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:13,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:13,522 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,SelfDestructingSolverStorable9 [2022-02-10 22:57:13,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash -541598790, now seen corresponding path program 3 times [2022-02-10 22:57:13,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:13,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186084213] [2022-02-10 22:57:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:13,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:13,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186084213] [2022-02-10 22:57:13,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186084213] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:13,578 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:13,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:13,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009642911] [2022-02-10 22:57:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:13,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:13,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:13,580 INFO L87 Difference]: Start difference. First operand 59564 states and 269270 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:14,532 INFO L93 Difference]: Finished difference Result 93055 states and 418675 transitions. [2022-02-10 22:57:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:57:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:15,188 INFO L225 Difference]: With dead ends: 93055 [2022-02-10 22:57:15,188 INFO L226 Difference]: Without dead ends: 91375 [2022-02-10 22:57:15,188 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:15,189 INFO L934 BasicCegarLoop]: 184 mSDtfsCounter, 114 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:15,189 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 368 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91375 states. [2022-02-10 22:57:17,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91375 to 64496. [2022-02-10 22:57:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64496 states, 64495 states have (on average 4.511869137142414) internal successors, (290993), 64495 states have internal predecessors, (290993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64496 states to 64496 states and 290993 transitions. [2022-02-10 22:57:17,738 INFO L78 Accepts]: Start accepts. Automaton has 64496 states and 290993 transitions. Word has length 98 [2022-02-10 22:57:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:17,738 INFO L470 AbstractCegarLoop]: Abstraction has 64496 states and 290993 transitions. [2022-02-10 22:57:17,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 64496 states and 290993 transitions. [2022-02-10 22:57:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:17,915 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:17,915 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:17,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-10 22:57:17,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash 696832420, now seen corresponding path program 4 times [2022-02-10 22:57:17,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:17,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615744] [2022-02-10 22:57:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:17,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:17,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:17,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615744] [2022-02-10 22:57:17,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615744] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:17,972 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:17,972 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:17,972 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607008401] [2022-02-10 22:57:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:17,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:17,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:17,973 INFO L87 Difference]: Start difference. First operand 64496 states and 290993 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:19,248 INFO L93 Difference]: Finished difference Result 104843 states and 472926 transitions. [2022-02-10 22:57:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:57:19,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:19,786 INFO L225 Difference]: With dead ends: 104843 [2022-02-10 22:57:19,786 INFO L226 Difference]: Without dead ends: 104843 [2022-02-10 22:57:19,786 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:19,787 INFO L934 BasicCegarLoop]: 169 mSDtfsCounter, 100 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:19,787 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 349 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104843 states. [2022-02-10 22:57:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104843 to 67278. [2022-02-10 22:57:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67278 states, 67277 states have (on average 4.5062948704609305) internal successors, (303170), 67277 states have internal predecessors, (303170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67278 states to 67278 states and 303170 transitions. [2022-02-10 22:57:22,776 INFO L78 Accepts]: Start accepts. Automaton has 67278 states and 303170 transitions. Word has length 98 [2022-02-10 22:57:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:22,776 INFO L470 AbstractCegarLoop]: Abstraction has 67278 states and 303170 transitions. [2022-02-10 22:57:22,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 67278 states and 303170 transitions. [2022-02-10 22:57:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:22,973 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:22,973 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:22,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-10 22:57:22,973 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:22,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1948353230, now seen corresponding path program 5 times [2022-02-10 22:57:22,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:22,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338043982] [2022-02-10 22:57:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:23,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:23,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338043982] [2022-02-10 22:57:23,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338043982] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:23,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:23,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:57:23,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002374416] [2022-02-10 22:57:23,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:23,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:23,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:23,050 INFO L87 Difference]: Start difference. First operand 67278 states and 303170 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:24,766 INFO L93 Difference]: Finished difference Result 139764 states and 628872 transitions. [2022-02-10 22:57:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:24,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:25,800 INFO L225 Difference]: With dead ends: 139764 [2022-02-10 22:57:25,801 INFO L226 Difference]: Without dead ends: 138402 [2022-02-10 22:57:25,801 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:25,801 INFO L934 BasicCegarLoop]: 174 mSDtfsCounter, 166 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:25,802 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 616 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138402 states. [2022-02-10 22:57:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138402 to 64544. [2022-02-10 22:57:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64544 states, 64543 states have (on average 4.512789922997071) internal successors, (291269), 64543 states have internal predecessors, (291269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64544 states to 64544 states and 291269 transitions. [2022-02-10 22:57:29,117 INFO L78 Accepts]: Start accepts. Automaton has 64544 states and 291269 transitions. Word has length 98 [2022-02-10 22:57:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:29,117 INFO L470 AbstractCegarLoop]: Abstraction has 64544 states and 291269 transitions. [2022-02-10 22:57:29,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 64544 states and 291269 transitions. [2022-02-10 22:57:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:29,290 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:29,290 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:29,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-10 22:57:29,291 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1919919388, now seen corresponding path program 6 times [2022-02-10 22:57:29,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:29,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645694252] [2022-02-10 22:57:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:29,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:29,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:29,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645694252] [2022-02-10 22:57:29,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645694252] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:29,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:29,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:29,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003133225] [2022-02-10 22:57:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:29,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:29,685 INFO L87 Difference]: Start difference. First operand 64544 states and 291269 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:30,587 INFO L93 Difference]: Finished difference Result 92280 states and 418087 transitions. [2022-02-10 22:57:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:57:30,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:31,037 INFO L225 Difference]: With dead ends: 92280 [2022-02-10 22:57:31,038 INFO L226 Difference]: Without dead ends: 92136 [2022-02-10 22:57:31,038 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:31,038 INFO L934 BasicCegarLoop]: 165 mSDtfsCounter, 78 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:31,038 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 520 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92136 states. [2022-02-10 22:57:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92136 to 64544. [2022-02-10 22:57:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64544 states, 64543 states have (on average 4.512046232744062) internal successors, (291221), 64543 states have internal predecessors, (291221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64544 states to 64544 states and 291221 transitions. [2022-02-10 22:57:33,770 INFO L78 Accepts]: Start accepts. Automaton has 64544 states and 291221 transitions. Word has length 98 [2022-02-10 22:57:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:33,770 INFO L470 AbstractCegarLoop]: Abstraction has 64544 states and 291221 transitions. [2022-02-10 22:57:33,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 64544 states and 291221 transitions. [2022-02-10 22:57:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:33,968 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:33,968 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:33,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-10 22:57:33,968 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1362461532, now seen corresponding path program 7 times [2022-02-10 22:57:33,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:33,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714546458] [2022-02-10 22:57:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:34,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:34,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714546458] [2022-02-10 22:57:34,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714546458] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:34,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:34,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:34,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13785307] [2022-02-10 22:57:34,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:34,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:34,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:34,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:34,026 INFO L87 Difference]: Start difference. First operand 64544 states and 291221 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:35,058 INFO L93 Difference]: Finished difference Result 98473 states and 437309 transitions. [2022-02-10 22:57:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:35,743 INFO L225 Difference]: With dead ends: 98473 [2022-02-10 22:57:35,743 INFO L226 Difference]: Without dead ends: 89791 [2022-02-10 22:57:35,744 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:57:35,744 INFO L934 BasicCegarLoop]: 186 mSDtfsCounter, 146 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:35,744 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 523 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89791 states. [2022-02-10 22:57:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89791 to 66476. [2022-02-10 22:57:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66476 states, 66475 states have (on average 4.542474614516736) internal successors, (301961), 66475 states have internal predecessors, (301961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66476 states to 66476 states and 301961 transitions. [2022-02-10 22:57:38,228 INFO L78 Accepts]: Start accepts. Automaton has 66476 states and 301961 transitions. Word has length 98 [2022-02-10 22:57:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:38,229 INFO L470 AbstractCegarLoop]: Abstraction has 66476 states and 301961 transitions. [2022-02-10 22:57:38,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 66476 states and 301961 transitions. [2022-02-10 22:57:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:38,426 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:38,426 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:38,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-10 22:57:38,426 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash -345364374, now seen corresponding path program 8 times [2022-02-10 22:57:38,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:38,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602382145] [2022-02-10 22:57:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:38,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:38,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602382145] [2022-02-10 22:57:38,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602382145] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:38,473 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:38,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:38,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035509571] [2022-02-10 22:57:38,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:38,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:38,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:38,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:38,474 INFO L87 Difference]: Start difference. First operand 66476 states and 301961 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:39,910 INFO L93 Difference]: Finished difference Result 130474 states and 595700 transitions. [2022-02-10 22:57:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:57:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:40,885 INFO L225 Difference]: With dead ends: 130474 [2022-02-10 22:57:40,885 INFO L226 Difference]: Without dead ends: 130474 [2022-02-10 22:57:40,886 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:40,886 INFO L934 BasicCegarLoop]: 154 mSDtfsCounter, 118 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:40,886 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 344 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130474 states. [2022-02-10 22:57:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130474 to 69830. [2022-02-10 22:57:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69830 states, 69829 states have (on average 4.55353792836787) internal successors, (317969), 69829 states have internal predecessors, (317969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69830 states to 69830 states and 317969 transitions. [2022-02-10 22:57:44,224 INFO L78 Accepts]: Start accepts. Automaton has 69830 states and 317969 transitions. Word has length 98 [2022-02-10 22:57:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:44,224 INFO L470 AbstractCegarLoop]: Abstraction has 69830 states and 317969 transitions. [2022-02-10 22:57:44,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 69830 states and 317969 transitions. [2022-02-10 22:57:44,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:44,440 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:44,440 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:44,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-10 22:57:44,441 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1304417272, now seen corresponding path program 9 times [2022-02-10 22:57:44,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:44,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405411593] [2022-02-10 22:57:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:44,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:44,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:44,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405411593] [2022-02-10 22:57:44,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405411593] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:44,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:44,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:57:44,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029124102] [2022-02-10 22:57:44,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:44,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:44,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:44,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:44,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:44,517 INFO L87 Difference]: Start difference. First operand 69830 states and 317969 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:46,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:46,038 INFO L93 Difference]: Finished difference Result 132262 states and 598204 transitions. [2022-02-10 22:57:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:46,736 INFO L225 Difference]: With dead ends: 132262 [2022-02-10 22:57:46,736 INFO L226 Difference]: Without dead ends: 130228 [2022-02-10 22:57:46,736 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:46,737 INFO L934 BasicCegarLoop]: 171 mSDtfsCounter, 193 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:46,737 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 394 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:47,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130228 states. [2022-02-10 22:57:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130228 to 66349. [2022-02-10 22:57:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66349 states, 66348 states have (on average 4.54179477904383) internal successors, (301339), 66348 states have internal predecessors, (301339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66349 states to 66349 states and 301339 transitions. [2022-02-10 22:57:50,691 INFO L78 Accepts]: Start accepts. Automaton has 66349 states and 301339 transitions. Word has length 98 [2022-02-10 22:57:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:50,692 INFO L470 AbstractCegarLoop]: Abstraction has 66349 states and 301339 transitions. [2022-02-10 22:57:50,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 66349 states and 301339 transitions. [2022-02-10 22:57:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:50,892 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:50,892 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:50,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-10 22:57:50,893 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1332851114, now seen corresponding path program 10 times [2022-02-10 22:57:50,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:50,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087934119] [2022-02-10 22:57:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:50,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:50,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087934119] [2022-02-10 22:57:50,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087934119] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:50,957 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:50,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:50,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081354501] [2022-02-10 22:57:50,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:50,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:50,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:50,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:50,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:50,958 INFO L87 Difference]: Start difference. First operand 66349 states and 301339 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:52,334 INFO L93 Difference]: Finished difference Result 118447 states and 535789 transitions. [2022-02-10 22:57:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:57:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:52,942 INFO L225 Difference]: With dead ends: 118447 [2022-02-10 22:57:52,942 INFO L226 Difference]: Without dead ends: 118399 [2022-02-10 22:57:52,942 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:52,943 INFO L934 BasicCegarLoop]: 160 mSDtfsCounter, 95 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:52,943 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 499 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118399 states. [2022-02-10 22:57:55,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118399 to 66333. [2022-02-10 22:57:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66333 states, 66332 states have (on average 4.5415033468009405) internal successors, (301247), 66332 states have internal predecessors, (301247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66333 states to 66333 states and 301247 transitions. [2022-02-10 22:57:56,073 INFO L78 Accepts]: Start accepts. Automaton has 66333 states and 301247 transitions. Word has length 98 [2022-02-10 22:57:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:56,074 INFO L470 AbstractCegarLoop]: Abstraction has 66333 states and 301247 transitions. [2022-02-10 22:57:56,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 66333 states and 301247 transitions. [2022-02-10 22:57:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-10 22:57:56,263 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:56,263 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:56,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-10 22:57:56,263 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:57:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1983847338, now seen corresponding path program 11 times [2022-02-10 22:57:56,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:56,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770569208] [2022-02-10 22:57:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:57:56,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:56,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770569208] [2022-02-10 22:57:56,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770569208] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:56,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:56,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:56,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806206604] [2022-02-10 22:57:56,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:56,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:56,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:56,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:56,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:56,314 INFO L87 Difference]: Start difference. First operand 66333 states and 301247 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:57,504 INFO L93 Difference]: Finished difference Result 84699 states and 386649 transitions. [2022-02-10 22:57:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:57,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-02-10 22:57:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:57,915 INFO L225 Difference]: With dead ends: 84699 [2022-02-10 22:57:57,915 INFO L226 Difference]: Without dead ends: 84603 [2022-02-10 22:57:57,915 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:57:57,916 INFO L934 BasicCegarLoop]: 141 mSDtfsCounter, 69 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:57,916 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 355 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84603 states. [2022-02-10 22:57:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84603 to 65856. [2022-02-10 22:57:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65856 states, 65855 states have (on average 4.5458659175461245) internal successors, (299368), 65855 states have internal predecessors, (299368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65856 states to 65856 states and 299368 transitions. [2022-02-10 22:58:00,456 INFO L78 Accepts]: Start accepts. Automaton has 65856 states and 299368 transitions. Word has length 98 [2022-02-10 22:58:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:00,456 INFO L470 AbstractCegarLoop]: Abstraction has 65856 states and 299368 transitions. [2022-02-10 22:58:00,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 65856 states and 299368 transitions. [2022-02-10 22:58:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 22:58:00,642 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:00,643 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:00,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-10 22:58:00,643 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:58:00,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1850810616, now seen corresponding path program 1 times [2022-02-10 22:58:00,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:00,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276751147] [2022-02-10 22:58:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:00,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:00,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276751147] [2022-02-10 22:58:00,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276751147] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:00,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561147729] [2022-02-10 22:58:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:00,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:00,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:00,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:00,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 22:58:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:00,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 22:58:00,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:01,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:01,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561147729] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:01,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:01,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2022-02-10 22:58:01,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154084107] [2022-02-10 22:58:01,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:01,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 22:58:01,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 22:58:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:58:01,520 INFO L87 Difference]: Start difference. First operand 65856 states and 299368 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:03,552 INFO L93 Difference]: Finished difference Result 174594 states and 797644 transitions. [2022-02-10 22:58:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 22:58:03,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-02-10 22:58:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:04,789 INFO L225 Difference]: With dead ends: 174594 [2022-02-10 22:58:04,789 INFO L226 Difference]: Without dead ends: 174594 [2022-02-10 22:58:04,789 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:58:04,789 INFO L934 BasicCegarLoop]: 335 mSDtfsCounter, 498 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:04,790 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 1373 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:58:05,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174594 states. [2022-02-10 22:58:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174594 to 62931. [2022-02-10 22:58:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62931 states, 62930 states have (on average 4.5571269664706815) internal successors, (286780), 62930 states have internal predecessors, (286780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62931 states to 62931 states and 286780 transitions. [2022-02-10 22:58:08,747 INFO L78 Accepts]: Start accepts. Automaton has 62931 states and 286780 transitions. Word has length 103 [2022-02-10 22:58:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:08,748 INFO L470 AbstractCegarLoop]: Abstraction has 62931 states and 286780 transitions. [2022-02-10 22:58:08,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 62931 states and 286780 transitions. [2022-02-10 22:58:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 22:58:08,928 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:08,928 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:08,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:09,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:09,128 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:58:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2140980418, now seen corresponding path program 1 times [2022-02-10 22:58:09,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:09,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597853182] [2022-02-10 22:58:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:09,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:09,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:09,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597853182] [2022-02-10 22:58:09,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597853182] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:58:09,200 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:58:09,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:58:09,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643855389] [2022-02-10 22:58:09,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:58:09,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:58:09,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:58:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:58:09,201 INFO L87 Difference]: Start difference. First operand 62931 states and 286780 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:10,751 INFO L93 Difference]: Finished difference Result 111649 states and 511120 transitions. [2022-02-10 22:58:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:58:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-02-10 22:58:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:11,833 INFO L225 Difference]: With dead ends: 111649 [2022-02-10 22:58:11,834 INFO L226 Difference]: Without dead ends: 111649 [2022-02-10 22:58:11,834 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:58:11,834 INFO L934 BasicCegarLoop]: 191 mSDtfsCounter, 206 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:11,834 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 487 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:58:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111649 states. [2022-02-10 22:58:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111649 to 64031. [2022-02-10 22:58:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64031 states, 64030 states have (on average 4.558878650632516) internal successors, (291905), 64030 states have internal predecessors, (291905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64031 states to 64031 states and 291905 transitions. [2022-02-10 22:58:14,882 INFO L78 Accepts]: Start accepts. Automaton has 64031 states and 291905 transitions. Word has length 103 [2022-02-10 22:58:14,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:14,884 INFO L470 AbstractCegarLoop]: Abstraction has 64031 states and 291905 transitions. [2022-02-10 22:58:14,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 64031 states and 291905 transitions. [2022-02-10 22:58:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 22:58:15,086 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:15,086 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:15,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-10 22:58:15,086 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:58:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1279880700, now seen corresponding path program 2 times [2022-02-10 22:58:15,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:15,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255179622] [2022-02-10 22:58:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:15,145 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:15,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255179622] [2022-02-10 22:58:15,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255179622] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:58:15,145 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:58:15,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:58:15,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541450668] [2022-02-10 22:58:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:58:15,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:58:15,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:58:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:58:15,146 INFO L87 Difference]: Start difference. First operand 64031 states and 291905 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:16,241 INFO L93 Difference]: Finished difference Result 104161 states and 476350 transitions. [2022-02-10 22:58:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 22:58:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-02-10 22:58:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:17,020 INFO L225 Difference]: With dead ends: 104161 [2022-02-10 22:58:17,020 INFO L226 Difference]: Without dead ends: 104161 [2022-02-10 22:58:17,020 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:58:17,020 INFO L934 BasicCegarLoop]: 211 mSDtfsCounter, 212 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:17,021 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 523 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:58:17,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104161 states. [2022-02-10 22:58:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104161 to 59019. [2022-02-10 22:58:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59019 states, 59018 states have (on average 4.546002914365109) internal successors, (268296), 59018 states have internal predecessors, (268296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59019 states to 59019 states and 268296 transitions. [2022-02-10 22:58:19,743 INFO L78 Accepts]: Start accepts. Automaton has 59019 states and 268296 transitions. Word has length 103 [2022-02-10 22:58:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:19,743 INFO L470 AbstractCegarLoop]: Abstraction has 59019 states and 268296 transitions. [2022-02-10 22:58:19,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 59019 states and 268296 transitions. [2022-02-10 22:58:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-10 22:58:19,904 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:19,904 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:19,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-10 22:58:19,905 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:58:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1462318488, now seen corresponding path program 2 times [2022-02-10 22:58:19,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:19,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82101720] [2022-02-10 22:58:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:19,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:19,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82101720] [2022-02-10 22:58:19,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82101720] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:19,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060609170] [2022-02-10 22:58:19,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:58:19,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:19,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:19,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:19,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 22:58:20,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:58:20,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:20,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 22:58:20,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:20,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:20,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060609170] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:20,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:20,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-02-10 22:58:20,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277579221] [2022-02-10 22:58:20,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:20,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 22:58:20,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 22:58:20,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-02-10 22:58:20,424 INFO L87 Difference]: Start difference. First operand 59019 states and 268296 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:21,608 INFO L93 Difference]: Finished difference Result 84164 states and 383640 transitions. [2022-02-10 22:58:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 22:58:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-02-10 22:58:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:22,028 INFO L225 Difference]: With dead ends: 84164 [2022-02-10 22:58:22,028 INFO L226 Difference]: Without dead ends: 84164 [2022-02-10 22:58:22,028 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:58:22,028 INFO L934 BasicCegarLoop]: 199 mSDtfsCounter, 296 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:22,029 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 744 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:58:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84164 states. [2022-02-10 22:58:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84164 to 48618. [2022-02-10 22:58:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48618 states, 48617 states have (on average 4.567846638007281) internal successors, (222075), 48617 states have internal predecessors, (222075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48618 states to 48618 states and 222075 transitions. [2022-02-10 22:58:24,240 INFO L78 Accepts]: Start accepts. Automaton has 48618 states and 222075 transitions. Word has length 103 [2022-02-10 22:58:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:24,240 INFO L470 AbstractCegarLoop]: Abstraction has 48618 states and 222075 transitions. [2022-02-10 22:58:24,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 48618 states and 222075 transitions. [2022-02-10 22:58:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-10 22:58:24,397 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:24,397 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:24,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:24,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:24,598 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:58:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:24,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1358209140, now seen corresponding path program 1 times [2022-02-10 22:58:24,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:24,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107578969] [2022-02-10 22:58:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:24,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:24,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:24,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107578969] [2022-02-10 22:58:24,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107578969] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:24,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944849974] [2022-02-10 22:58:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:24,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:24,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:24,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:24,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 22:58:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:24,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 22:58:24,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:58:24,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:58:25,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944849974] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:25,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:25,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-02-10 22:58:25,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27020524] [2022-02-10 22:58:25,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:25,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 22:58:25,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 22:58:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:58:25,187 INFO L87 Difference]: Start difference. First operand 48618 states and 222075 transitions. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:26,814 INFO L93 Difference]: Finished difference Result 140261 states and 633845 transitions. [2022-02-10 22:58:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 22:58:26,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-02-10 22:58:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:27,847 INFO L225 Difference]: With dead ends: 140261 [2022-02-10 22:58:27,848 INFO L226 Difference]: Without dead ends: 132800 [2022-02-10 22:58:27,848 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:58:27,848 INFO L934 BasicCegarLoop]: 157 mSDtfsCounter, 242 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:27,848 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 867 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:58:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132800 states. [2022-02-10 22:58:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132800 to 122554. [2022-02-10 22:58:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122554 states, 122553 states have (on average 4.562670844450972) internal successors, (559169), 122553 states have internal predecessors, (559169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122554 states to 122554 states and 559169 transitions. [2022-02-10 22:58:32,588 INFO L78 Accepts]: Start accepts. Automaton has 122554 states and 559169 transitions. Word has length 108 [2022-02-10 22:58:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:32,589 INFO L470 AbstractCegarLoop]: Abstraction has 122554 states and 559169 transitions. [2022-02-10 22:58:32,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 122554 states and 559169 transitions. [2022-02-10 22:58:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-10 22:58:33,323 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:33,323 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:33,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:33,531 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,SelfDestructingSolverStorable23 [2022-02-10 22:58:33,531 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:58:33,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:33,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1794452218, now seen corresponding path program 2 times [2022-02-10 22:58:33,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:33,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667205291] [2022-02-10 22:58:33,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:33,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:58:33,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:33,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667205291] [2022-02-10 22:58:33,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667205291] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:33,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954319726] [2022-02-10 22:58:33,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:58:33,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:33,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:33,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:33,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 22:58:33,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:58:33,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:33,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 22:58:33,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:58:34,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:58:34,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954319726] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:34,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:34,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-02-10 22:58:34,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585708869] [2022-02-10 22:58:34,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:34,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 22:58:34,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 22:58:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:58:34,285 INFO L87 Difference]: Start difference. First operand 122554 states and 559169 transitions. Second operand has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:38,022 INFO L93 Difference]: Finished difference Result 274034 states and 1244126 transitions. [2022-02-10 22:58:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 22:58:38,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-02-10 22:58:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:40,964 INFO L225 Difference]: With dead ends: 274034 [2022-02-10 22:58:40,965 INFO L226 Difference]: Without dead ends: 266006 [2022-02-10 22:58:40,965 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:58:40,965 INFO L934 BasicCegarLoop]: 258 mSDtfsCounter, 421 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:40,965 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1460 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:58:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266006 states. [2022-02-10 22:58:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266006 to 165829. [2022-02-10 22:58:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165829 states, 165828 states have (on average 4.580318160986082) internal successors, (759545), 165828 states have internal predecessors, (759545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165829 states to 165829 states and 759545 transitions. [2022-02-10 22:58:50,509 INFO L78 Accepts]: Start accepts. Automaton has 165829 states and 759545 transitions. Word has length 108 [2022-02-10 22:58:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:50,510 INFO L470 AbstractCegarLoop]: Abstraction has 165829 states and 759545 transitions. [2022-02-10 22:58:50,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 165829 states and 759545 transitions. [2022-02-10 22:58:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-10 22:58:51,416 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:51,416 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:51,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:51,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:51,617 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-10 22:58:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash -644865062, now seen corresponding path program 3 times [2022-02-10 22:58:51,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:51,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261618689] [2022-02-10 22:58:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:51,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:58:51,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:51,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261618689] [2022-02-10 22:58:51,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261618689] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:51,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191694651] [2022-02-10 22:58:51,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:58:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:51,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:51,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:51,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 22:58:51,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:58:51,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:51,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:58:51,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:58:52,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:58:52,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191694651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:52,367 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:52,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-02-10 22:58:52,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612855671] [2022-02-10 22:58:52,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:52,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:58:52,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:58:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:58:52,368 INFO L87 Difference]: Start difference. First operand 165829 states and 759545 transitions. Second operand has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:48,807 INFO L93 Difference]: Finished difference Result 1749100 states and 7999941 transitions. [2022-02-10 22:59:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 503 states. [2022-02-10 22:59:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-02-10 22:59:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted.