/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:27:35,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:27:35,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:27:35,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 14:27:35,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 14:27:35,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 14:27:35,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 14:27:35,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 14:27:35,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 14:27:35,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 14:27:35,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 14:27:35,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 14:27:35,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 14:27:35,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 14:27:35,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 14:27:35,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 14:27:35,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 14:27:35,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 14:27:35,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 14:27:35,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 14:27:35,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 14:27:35,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 14:27:35,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 14:27:35,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 14:27:35,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 14:27:35,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 14:27:35,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 14:27:35,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 14:27:35,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 14:27:35,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 14:27:35,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 14:27:35,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 14:27:35,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 14:27:35,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 14:27:35,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 14:27:35,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 14:27:35,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 14:27:35,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 14:27:35,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:27:35,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:27:35,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:27:35,950 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 [2022-03-15 14:27:35,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:27:35,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:27:35,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:27:35,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:27:35,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:27:35,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:27:35,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:27:35,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:27:35,980 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:27:35,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:27:35,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:27:35,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:27:35,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:27:35,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:27:35,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:27:35,983 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:27:35,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:27:35,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:27:36,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:27:36,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:27:36,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:27:36,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:27:36,202 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:27:36,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2022-03-15 14:27:36,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aa8825b/008b6d158fdf43bb87e6a7cfa3cd09ad/FLAG65581d254 [2022-03-15 14:27:36,590 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:27:36,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2022-03-15 14:27:36,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aa8825b/008b6d158fdf43bb87e6a7cfa3cd09ad/FLAG65581d254 [2022-03-15 14:27:37,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aa8825b/008b6d158fdf43bb87e6a7cfa3cd09ad [2022-03-15 14:27:37,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:27:37,028 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:27:37,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:27:37,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:27:37,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:27:37,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f55edf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37, skipping insertion in model container [2022-03-15 14:27:37,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:27:37,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:27:37,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2022-03-15 14:27:37,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:27:37,212 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:27:37,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2022-03-15 14:27:37,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:27:37,246 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:27:37,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37 WrapperNode [2022-03-15 14:27:37,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:27:37,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:27:37,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:27:37,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:27:37,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,294 INFO L137 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 245 [2022-03-15 14:27:37,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:27:37,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:27:37,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:27:37,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:27:37,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:27:37,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:27:37,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:27:37,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:27:37,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (1/1) ... [2022-03-15 14:27:37,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:27:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:37,381 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) [2022-03-15 14:27:37,399 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 [2022-03-15 14:27:37,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:27:37,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:27:37,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:27:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:27:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:27:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:27:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:27:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:27:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 14:27:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 14:27:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:27:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:27:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:27:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 14:27:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:27:37,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:27:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:27:37,415 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 14:27:37,479 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:27:37,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:27:37,754 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:27:37,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:27:37,845 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-15 14:27:37,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:27:37 BoogieIcfgContainer [2022-03-15 14:27:37,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:27:37,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:27:37,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:27:37,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:27:37,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:27:37" (1/3) ... [2022-03-15 14:27:37,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeaaeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:27:37, skipping insertion in model container [2022-03-15 14:27:37,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:27:37" (2/3) ... [2022-03-15 14:27:37,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeaaeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:27:37, skipping insertion in model container [2022-03-15 14:27:37,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:27:37" (3/3) ... [2022-03-15 14:27:37,854 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2022-03-15 14:27:37,859 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:27:37,859 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:27:37,859 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:27:37,859 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:27:37,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,933 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,933 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,933 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,933 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,937 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,938 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,939 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,939 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,939 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,939 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,939 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,939 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,941 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,943 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,944 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,944 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,949 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,949 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,949 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:27:37,952 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 14:27:38,004 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:27:38,010 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 14:27:38,010 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 14:27:38,022 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 203 places, 211 transitions, 446 flow [2022-03-15 14:27:38,183 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3854 states, 3853 states have (on average 3.975084349857254) internal successors, (15316), 3853 states have internal predecessors, (15316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 3854 states, 3853 states have (on average 3.975084349857254) internal successors, (15316), 3853 states have internal predecessors, (15316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-03-15 14:27:38,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:38,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:38,235 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:38,239 INFO L85 PathProgramCache]: Analyzing trace with hash 699025302, now seen corresponding path program 1 times [2022-03-15 14:27:38,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:38,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708985449] [2022-03-15 14:27:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:38,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:38,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708985449] [2022-03-15 14:27:38,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708985449] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:27:38,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:27:38,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:27:38,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664929728] [2022-03-15 14:27:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:27:38,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:27:38,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:27:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:27:38,533 INFO L87 Difference]: Start difference. First operand has 3854 states, 3853 states have (on average 3.975084349857254) internal successors, (15316), 3853 states have internal predecessors, (15316), 0 states have call successors, (0), 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 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:38,642 INFO L93 Difference]: Finished difference Result 3854 states and 13372 transitions. [2022-03-15 14:27:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:27:38,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-03-15 14:27:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:38,688 INFO L225 Difference]: With dead ends: 3854 [2022-03-15 14:27:38,688 INFO L226 Difference]: Without dead ends: 3848 [2022-03-15 14:27:38,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:27:38,696 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:38,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:27:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2022-03-15 14:27:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3848. [2022-03-15 14:27:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.4743956329607486) internal successors, (13366), 3847 states have internal predecessors, (13366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 13366 transitions. [2022-03-15 14:27:38,957 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 13366 transitions. Word has length 150 [2022-03-15 14:27:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:38,958 INFO L470 AbstractCegarLoop]: Abstraction has 3848 states and 13366 transitions. [2022-03-15 14:27:38,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 13366 transitions. [2022-03-15 14:27:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-03-15 14:27:38,975 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:38,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:38,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:27:38,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:38,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:38,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1609890179, now seen corresponding path program 1 times [2022-03-15 14:27:38,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:38,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90479309] [2022-03-15 14:27:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:38,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:27:39,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:39,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90479309] [2022-03-15 14:27:39,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90479309] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:27:39,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:27:39,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:27:39,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044439739] [2022-03-15 14:27:39,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:27:39,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:27:39,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:39,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:27:39,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:27:39,209 INFO L87 Difference]: Start difference. First operand 3848 states and 13366 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:39,339 INFO L93 Difference]: Finished difference Result 4382 states and 14854 transitions. [2022-03-15 14:27:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:27:39,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2022-03-15 14:27:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:39,360 INFO L225 Difference]: With dead ends: 4382 [2022-03-15 14:27:39,360 INFO L226 Difference]: Without dead ends: 3854 [2022-03-15 14:27:39,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:27:39,363 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 113 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:39,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 577 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:27:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2022-03-15 14:27:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3849. [2022-03-15 14:27:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3848 states have (on average 3.473752598752599) internal successors, (13367), 3848 states have internal predecessors, (13367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 13367 transitions. [2022-03-15 14:27:39,521 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 13367 transitions. Word has length 157 [2022-03-15 14:27:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:39,523 INFO L470 AbstractCegarLoop]: Abstraction has 3849 states and 13367 transitions. [2022-03-15 14:27:39,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 13367 transitions. [2022-03-15 14:27:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-15 14:27:39,533 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:39,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:39,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:27:39,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1014935693, now seen corresponding path program 1 times [2022-03-15 14:27:39,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:39,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957907145] [2022-03-15 14:27:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:39,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:39,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:39,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957907145] [2022-03-15 14:27:39,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957907145] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:27:39,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:27:39,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 14:27:39,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897553948] [2022-03-15 14:27:39,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:27:39,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 14:27:39,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 14:27:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-15 14:27:39,693 INFO L87 Difference]: Start difference. First operand 3849 states and 13367 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:39,826 INFO L93 Difference]: Finished difference Result 4686 states and 15776 transitions. [2022-03-15 14:27:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:27:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-03-15 14:27:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:39,849 INFO L225 Difference]: With dead ends: 4686 [2022-03-15 14:27:39,849 INFO L226 Difference]: Without dead ends: 3855 [2022-03-15 14:27:39,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:27:39,850 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 369 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:39,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 520 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:27:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-03-15 14:27:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3850. [2022-03-15 14:27:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 3.4731098986749807) internal successors, (13368), 3849 states have internal predecessors, (13368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 13368 transitions. [2022-03-15 14:27:39,964 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 13368 transitions. Word has length 164 [2022-03-15 14:27:39,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:39,964 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 13368 transitions. [2022-03-15 14:27:39,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 13368 transitions. [2022-03-15 14:27:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-15 14:27:39,975 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:39,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:39,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:27:39,975 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2100480242, now seen corresponding path program 1 times [2022-03-15 14:27:39,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:39,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115741134] [2022-03-15 14:27:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:39,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:27:40,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:40,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115741134] [2022-03-15 14:27:40,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115741134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:27:40,143 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:27:40,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 14:27:40,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010809895] [2022-03-15 14:27:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:27:40,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 14:27:40,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 14:27:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:27:40,144 INFO L87 Difference]: Start difference. First operand 3850 states and 13368 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:40,187 INFO L93 Difference]: Finished difference Result 3982 states and 13786 transitions. [2022-03-15 14:27:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 14:27:40,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-03-15 14:27:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:40,218 INFO L225 Difference]: With dead ends: 3982 [2022-03-15 14:27:40,218 INFO L226 Difference]: Without dead ends: 3982 [2022-03-15 14:27:40,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:27:40,225 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 15 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:40,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 248 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:27:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2022-03-15 14:27:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3982. [2022-03-15 14:27:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3981 states have (on average 3.462949007786988) internal successors, (13786), 3981 states have internal predecessors, (13786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 13786 transitions. [2022-03-15 14:27:40,337 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 13786 transitions. Word has length 171 [2022-03-15 14:27:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:40,338 INFO L470 AbstractCegarLoop]: Abstraction has 3982 states and 13786 transitions. [2022-03-15 14:27:40,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 13786 transitions. [2022-03-15 14:27:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-15 14:27:40,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:40,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:40,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 14:27:40,350 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1516867792, now seen corresponding path program 2 times [2022-03-15 14:27:40,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:40,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584546653] [2022-03-15 14:27:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:40,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:27:40,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:40,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584546653] [2022-03-15 14:27:40,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584546653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:27:40,514 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:27:40,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 14:27:40,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175477547] [2022-03-15 14:27:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:27:40,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 14:27:40,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 14:27:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:27:40,515 INFO L87 Difference]: Start difference. First operand 3982 states and 13786 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:40,553 INFO L93 Difference]: Finished difference Result 4060 states and 13764 transitions. [2022-03-15 14:27:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 14:27:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-03-15 14:27:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:40,565 INFO L225 Difference]: With dead ends: 4060 [2022-03-15 14:27:40,565 INFO L226 Difference]: Without dead ends: 4060 [2022-03-15 14:27:40,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:27:40,566 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 32 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:40,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 225 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:27:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2022-03-15 14:27:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 4060. [2022-03-15 14:27:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4060 states, 4059 states have (on average 3.3909830007390984) internal successors, (13764), 4059 states have internal predecessors, (13764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 13764 transitions. [2022-03-15 14:27:40,651 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 13764 transitions. Word has length 171 [2022-03-15 14:27:40,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:40,652 INFO L470 AbstractCegarLoop]: Abstraction has 4060 states and 13764 transitions. [2022-03-15 14:27:40,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:40,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 13764 transitions. [2022-03-15 14:27:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-15 14:27:40,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:40,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:40,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 14:27:40,721 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2107996668, now seen corresponding path program 3 times [2022-03-15 14:27:40,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:40,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966151043] [2022-03-15 14:27:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:40,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:27:40,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:40,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966151043] [2022-03-15 14:27:40,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966151043] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:27:40,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:27:40,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-15 14:27:40,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260055690] [2022-03-15 14:27:40,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:27:40,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 14:27:40,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 14:27:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:27:40,952 INFO L87 Difference]: Start difference. First operand 4060 states and 13764 transitions. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:41,145 INFO L93 Difference]: Finished difference Result 7163 states and 24194 transitions. [2022-03-15 14:27:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 14:27:41,146 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-03-15 14:27:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:41,168 INFO L225 Difference]: With dead ends: 7163 [2022-03-15 14:27:41,168 INFO L226 Difference]: Without dead ends: 6788 [2022-03-15 14:27:41,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-15 14:27:41,169 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 352 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:41,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1197 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:27:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6788 states. [2022-03-15 14:27:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6788 to 5089. [2022-03-15 14:27:41,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 3.3294025157232703) internal successors, (16940), 5088 states have internal predecessors, (16940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 16940 transitions. [2022-03-15 14:27:41,387 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 16940 transitions. Word has length 171 [2022-03-15 14:27:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:41,387 INFO L470 AbstractCegarLoop]: Abstraction has 5089 states and 16940 transitions. [2022-03-15 14:27:41,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 16940 transitions. [2022-03-15 14:27:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-03-15 14:27:41,399 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:41,399 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:41,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 14:27:41,399 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:41,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:41,400 INFO L85 PathProgramCache]: Analyzing trace with hash 11808264, now seen corresponding path program 1 times [2022-03-15 14:27:41,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:41,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81137220] [2022-03-15 14:27:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:41,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 14:27:41,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:41,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81137220] [2022-03-15 14:27:41,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81137220] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:27:41,464 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:27:41,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 14:27:41,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925325880] [2022-03-15 14:27:41,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:27:41,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:27:41,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:27:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:27:41,465 INFO L87 Difference]: Start difference. First operand 5089 states and 16940 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:41,574 INFO L93 Difference]: Finished difference Result 11269 states and 38535 transitions. [2022-03-15 14:27:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 14:27:41,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-03-15 14:27:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:41,608 INFO L225 Difference]: With dead ends: 11269 [2022-03-15 14:27:41,608 INFO L226 Difference]: Without dead ends: 10735 [2022-03-15 14:27:41,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:27:41,610 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 180 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:41,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 340 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:27:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2022-03-15 14:27:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 8593. [2022-03-15 14:27:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8593 states, 8592 states have (on average 3.451117318435754) internal successors, (29652), 8592 states have internal predecessors, (29652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8593 states to 8593 states and 29652 transitions. [2022-03-15 14:27:41,913 INFO L78 Accepts]: Start accepts. Automaton has 8593 states and 29652 transitions. Word has length 175 [2022-03-15 14:27:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:41,913 INFO L470 AbstractCegarLoop]: Abstraction has 8593 states and 29652 transitions. [2022-03-15 14:27:41,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 8593 states and 29652 transitions. [2022-03-15 14:27:41,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-03-15 14:27:41,933 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:41,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:41,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 14:27:41,934 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1422100183, now seen corresponding path program 1 times [2022-03-15 14:27:41,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:41,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783349731] [2022-03-15 14:27:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:41,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:42,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:42,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783349731] [2022-03-15 14:27:42,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783349731] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:42,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430222828] [2022-03-15 14:27:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:42,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:42,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:42,022 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) [2022-03-15 14:27:42,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 14:27:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:42,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 14:27:42,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:42,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:43,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430222828] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:43,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:43,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:27:43,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708380082] [2022-03-15 14:27:43,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:43,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:27:43,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:27:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:27:43,004 INFO L87 Difference]: Start difference. First operand 8593 states and 29652 transitions. Second operand has 19 states, 19 states have (on average 13.0) internal successors, (247), 19 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:43,304 INFO L93 Difference]: Finished difference Result 16412 states and 55817 transitions. [2022-03-15 14:27:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 14:27:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.0) internal successors, (247), 19 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2022-03-15 14:27:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:43,351 INFO L225 Difference]: With dead ends: 16412 [2022-03-15 14:27:43,351 INFO L226 Difference]: Without dead ends: 12332 [2022-03-15 14:27:43,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:27:43,352 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 765 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:43,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 1502 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:27:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12332 states. [2022-03-15 14:27:43,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12332 to 8769. [2022-03-15 14:27:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8769 states, 8768 states have (on average 3.4274635036496353) internal successors, (30052), 8768 states have internal predecessors, (30052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8769 states to 8769 states and 30052 transitions. [2022-03-15 14:27:43,613 INFO L78 Accepts]: Start accepts. Automaton has 8769 states and 30052 transitions. Word has length 176 [2022-03-15 14:27:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:43,613 INFO L470 AbstractCegarLoop]: Abstraction has 8769 states and 30052 transitions. [2022-03-15 14:27:43,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.0) internal successors, (247), 19 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8769 states and 30052 transitions. [2022-03-15 14:27:43,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-03-15 14:27:43,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:43,632 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:43,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 14:27:43,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:43,863 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:43,864 INFO L85 PathProgramCache]: Analyzing trace with hash -400780801, now seen corresponding path program 1 times [2022-03-15 14:27:43,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:43,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889097938] [2022-03-15 14:27:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:43,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:43,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889097938] [2022-03-15 14:27:43,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889097938] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:43,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108143751] [2022-03-15 14:27:43,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:43,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:43,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:43,952 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) [2022-03-15 14:27:43,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 14:27:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:44,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 14:27:44,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:44,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:44,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108143751] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:44,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:44,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-15 14:27:44,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418618739] [2022-03-15 14:27:44,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:44,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:27:44,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:27:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:27:44,617 INFO L87 Difference]: Start difference. First operand 8769 states and 30052 transitions. Second operand has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:44,879 INFO L93 Difference]: Finished difference Result 14007 states and 46931 transitions. [2022-03-15 14:27:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 14:27:44,880 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 0 states have call successors, (0), 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 180 [2022-03-15 14:27:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:44,917 INFO L225 Difference]: With dead ends: 14007 [2022-03-15 14:27:44,918 INFO L226 Difference]: Without dead ends: 11589 [2022-03-15 14:27:44,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-03-15 14:27:44,920 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 658 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:44,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1534 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:27:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11589 states. [2022-03-15 14:27:45,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11589 to 10448. [2022-03-15 14:27:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10448 states, 10447 states have (on average 3.395520245046425) internal successors, (35473), 10447 states have internal predecessors, (35473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10448 states to 10448 states and 35473 transitions. [2022-03-15 14:27:45,132 INFO L78 Accepts]: Start accepts. Automaton has 10448 states and 35473 transitions. Word has length 180 [2022-03-15 14:27:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:45,132 INFO L470 AbstractCegarLoop]: Abstraction has 10448 states and 35473 transitions. [2022-03-15 14:27:45,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 10448 states and 35473 transitions. [2022-03-15 14:27:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-15 14:27:45,154 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:45,154 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:45,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-15 14:27:45,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-15 14:27:45,368 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:45,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2011759303, now seen corresponding path program 2 times [2022-03-15 14:27:45,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:45,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039385922] [2022-03-15 14:27:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:45,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:45,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:45,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039385922] [2022-03-15 14:27:45,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039385922] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:45,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496858117] [2022-03-15 14:27:45,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:27:45,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:45,789 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) [2022-03-15 14:27:45,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 14:27:45,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:27:45,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:27:45,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-15 14:27:45,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:46,840 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-15 14:27:46,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-15 14:27:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:46,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:47,205 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:27:47,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-03-15 14:27:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:48,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496858117] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:48,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:48,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 14] total 41 [2022-03-15 14:27:48,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468796727] [2022-03-15 14:27:48,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:48,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:27:48,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:48,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:27:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1343, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:27:48,320 INFO L87 Difference]: Start difference. First operand 10448 states and 35473 transitions. Second operand has 41 states, 41 states have (on average 10.512195121951219) internal successors, (431), 41 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:50,623 INFO L93 Difference]: Finished difference Result 55462 states and 192889 transitions. [2022-03-15 14:27:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:27:50,623 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.512195121951219) internal successors, (431), 41 states have internal predecessors, (431), 0 states have call successors, (0), 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 183 [2022-03-15 14:27:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:50,795 INFO L225 Difference]: With dead ends: 55462 [2022-03-15 14:27:50,795 INFO L226 Difference]: Without dead ends: 47527 [2022-03-15 14:27:50,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1226, Invalid=5254, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 14:27:50,797 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1627 mSDsluCounter, 5377 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 5162 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:50,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 5162 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1491 Invalid, 0 Unknown, 52 Unchecked, 0.7s Time] [2022-03-15 14:27:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47527 states. [2022-03-15 14:27:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47527 to 20690. [2022-03-15 14:27:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20690 states, 20689 states have (on average 3.5488423800087) internal successors, (73422), 20689 states have internal predecessors, (73422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20690 states to 20690 states and 73422 transitions. [2022-03-15 14:27:51,601 INFO L78 Accepts]: Start accepts. Automaton has 20690 states and 73422 transitions. Word has length 183 [2022-03-15 14:27:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:51,602 INFO L470 AbstractCegarLoop]: Abstraction has 20690 states and 73422 transitions. [2022-03-15 14:27:51,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.512195121951219) internal successors, (431), 41 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 20690 states and 73422 transitions. [2022-03-15 14:27:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-15 14:27:51,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:51,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:51,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 14:27:51,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:51,860 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2053321327, now seen corresponding path program 3 times [2022-03-15 14:27:51,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:51,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463979958] [2022-03-15 14:27:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:52,801 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:52,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463979958] [2022-03-15 14:27:52,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463979958] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:52,801 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315567551] [2022-03-15 14:27:52,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:27:52,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:52,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:52,802 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) [2022-03-15 14:27:52,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 14:27:52,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:27:52,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:27:52,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 14:27:52,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:53,442 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-15 14:27:53,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-15 14:27:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:27:53,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:53,548 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:27:53,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-03-15 14:27:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:27:53,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315567551] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:27:53,880 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:27:53,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 5, 5] total 25 [2022-03-15 14:27:53,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33147473] [2022-03-15 14:27:53,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:27:53,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:27:53,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:27:53,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:27:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:27:53,883 INFO L87 Difference]: Start difference. First operand 20690 states and 73422 transitions. Second operand has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:27:55,324 INFO L93 Difference]: Finished difference Result 29954 states and 104974 transitions. [2022-03-15 14:27:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:27:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 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 183 [2022-03-15 14:27:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:27:55,409 INFO L225 Difference]: With dead ends: 29954 [2022-03-15 14:27:55,409 INFO L226 Difference]: Without dead ends: 27539 [2022-03-15 14:27:55,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=533, Invalid=2889, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:27:55,411 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 440 mSDsluCounter, 3906 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:27:55,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 3822 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1001 Invalid, 0 Unknown, 307 Unchecked, 0.4s Time] [2022-03-15 14:27:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27539 states. [2022-03-15 14:27:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27539 to 22909. [2022-03-15 14:27:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22909 states, 22908 states have (on average 3.5497642744892612) internal successors, (81318), 22908 states have internal predecessors, (81318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22909 states to 22909 states and 81318 transitions. [2022-03-15 14:27:56,109 INFO L78 Accepts]: Start accepts. Automaton has 22909 states and 81318 transitions. Word has length 183 [2022-03-15 14:27:56,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:27:56,110 INFO L470 AbstractCegarLoop]: Abstraction has 22909 states and 81318 transitions. [2022-03-15 14:27:56,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:27:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 22909 states and 81318 transitions. [2022-03-15 14:27:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-15 14:27:56,155 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:27:56,155 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:27:56,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 14:27:56,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:56,363 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:27:56,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:27:56,363 INFO L85 PathProgramCache]: Analyzing trace with hash 964671629, now seen corresponding path program 4 times [2022-03-15 14:27:56,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:27:56,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576857328] [2022-03-15 14:27:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:27:56,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:27:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:27:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:57,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:27:57,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576857328] [2022-03-15 14:27:57,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576857328] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:27:57,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548224431] [2022-03-15 14:27:57,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:27:57,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:27:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:27:57,099 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) [2022-03-15 14:27:57,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 14:27:57,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:27:57,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:27:57,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 14:27:57,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:27:57,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:27:57,444 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:27:57,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:27:58,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:27:58,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:27:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:27:58,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:27:58,698 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:27:58,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 14:27:58,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-15 14:28:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:00,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548224431] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:00,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:00,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 58 [2022-03-15 14:28:00,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695926497] [2022-03-15 14:28:00,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:00,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-15 14:28:00,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:00,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-15 14:28:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2980, Unknown=2, NotChecked=0, Total=3306 [2022-03-15 14:28:00,387 INFO L87 Difference]: Start difference. First operand 22909 states and 81318 transitions. Second operand has 58 states, 58 states have (on average 7.982758620689655) internal successors, (463), 58 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:28:06,372 INFO L93 Difference]: Finished difference Result 72138 states and 250876 transitions. [2022-03-15 14:28:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-15 14:28:06,372 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 7.982758620689655) internal successors, (463), 58 states have internal predecessors, (463), 0 states have call successors, (0), 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 183 [2022-03-15 14:28:06,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:28:06,703 INFO L225 Difference]: With dead ends: 72138 [2022-03-15 14:28:06,704 INFO L226 Difference]: Without dead ends: 58169 [2022-03-15 14:28:06,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4379 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2500, Invalid=15320, Unknown=2, NotChecked=0, Total=17822 [2022-03-15 14:28:06,708 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 3452 mSDsluCounter, 7845 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3452 SdHoareTripleChecker+Valid, 7436 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:28:06,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3452 Valid, 7436 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2454 Invalid, 0 Unknown, 288 Unchecked, 1.1s Time] [2022-03-15 14:28:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58169 states. [2022-03-15 14:28:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58169 to 22216. [2022-03-15 14:28:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22216 states, 22215 states have (on average 3.534773801485483) internal successors, (78525), 22215 states have internal predecessors, (78525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22216 states to 22216 states and 78525 transitions. [2022-03-15 14:28:07,652 INFO L78 Accepts]: Start accepts. Automaton has 22216 states and 78525 transitions. Word has length 183 [2022-03-15 14:28:07,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:28:07,652 INFO L470 AbstractCegarLoop]: Abstraction has 22216 states and 78525 transitions. [2022-03-15 14:28:07,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 7.982758620689655) internal successors, (463), 58 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 22216 states and 78525 transitions. [2022-03-15 14:28:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-15 14:28:07,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:28:07,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:28:07,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 14:28:07,932 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,SelfDestructingSolverStorable11 [2022-03-15 14:28:07,933 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:28:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:28:07,933 INFO L85 PathProgramCache]: Analyzing trace with hash -223138657, now seen corresponding path program 5 times [2022-03-15 14:28:07,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:28:07,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547882942] [2022-03-15 14:28:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:28:07,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:28:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:08,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:28:08,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547882942] [2022-03-15 14:28:08,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547882942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:28:08,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020881564] [2022-03-15 14:28:08,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:28:08,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:08,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:28:08,723 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) [2022-03-15 14:28:08,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 14:28:08,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:28:08,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:28:08,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-15 14:28:08,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:28:08,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:28:09,085 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:28:09,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:28:10,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:28:10,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 14:28:10,450 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:28:10,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-15 14:28:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:10,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:28:10,665 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:28:10,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 14:28:10,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-15 14:28:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:12,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020881564] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:12,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:12,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 47 [2022-03-15 14:28:12,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623831071] [2022-03-15 14:28:12,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:12,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 14:28:12,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 14:28:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1889, Unknown=1, NotChecked=0, Total=2162 [2022-03-15 14:28:12,237 INFO L87 Difference]: Start difference. First operand 22216 states and 78525 transitions. Second operand has 47 states, 47 states have (on average 8.702127659574469) internal successors, (409), 47 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:28:14,689 INFO L93 Difference]: Finished difference Result 54084 states and 190939 transitions. [2022-03-15 14:28:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 14:28:14,689 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.702127659574469) internal successors, (409), 47 states have internal predecessors, (409), 0 states have call successors, (0), 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 183 [2022-03-15 14:28:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:28:14,875 INFO L225 Difference]: With dead ends: 54084 [2022-03-15 14:28:14,875 INFO L226 Difference]: Without dead ends: 53307 [2022-03-15 14:28:14,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 344 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1346, Invalid=7020, Unknown=6, NotChecked=0, Total=8372 [2022-03-15 14:28:14,877 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1543 mSDsluCounter, 8288 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 8035 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 528 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:28:14,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 8035 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1629 Invalid, 0 Unknown, 528 Unchecked, 0.7s Time] [2022-03-15 14:28:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53307 states. [2022-03-15 14:28:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53307 to 26785. [2022-03-15 14:28:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26785 states, 26784 states have (on average 3.5612679211469533) internal successors, (95385), 26784 states have internal predecessors, (95385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26785 states to 26785 states and 95385 transitions. [2022-03-15 14:28:15,889 INFO L78 Accepts]: Start accepts. Automaton has 26785 states and 95385 transitions. Word has length 183 [2022-03-15 14:28:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:28:15,889 INFO L470 AbstractCegarLoop]: Abstraction has 26785 states and 95385 transitions. [2022-03-15 14:28:15,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.702127659574469) internal successors, (409), 47 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 26785 states and 95385 transitions. [2022-03-15 14:28:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-15 14:28:15,947 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:28:15,947 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:28:15,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 14:28:16,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:16,165 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:28:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:28:16,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1069910525, now seen corresponding path program 6 times [2022-03-15 14:28:16,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:28:16,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897971965] [2022-03-15 14:28:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:28:16,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:28:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:16,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:28:16,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897971965] [2022-03-15 14:28:16,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897971965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:28:16,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164671942] [2022-03-15 14:28:16,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:28:16,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:16,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:28:16,830 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) [2022-03-15 14:28:16,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 14:28:16,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:28:16,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:28:16,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 14:28:16,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:28:16,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:28:17,131 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:28:17,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:28:17,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:28:17,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:28:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:18,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:28:18,273 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:28:18,274 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 14:28:18,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-15 14:28:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:20,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164671942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:20,314 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:20,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 57 [2022-03-15 14:28:20,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107236405] [2022-03-15 14:28:20,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:20,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-15 14:28:20,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:20,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-15 14:28:20,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:28:20,316 INFO L87 Difference]: Start difference. First operand 26785 states and 95385 transitions. Second operand has 57 states, 57 states have (on average 8.12280701754386) internal successors, (463), 57 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:28:26,316 INFO L93 Difference]: Finished difference Result 62599 states and 218516 transitions. [2022-03-15 14:28:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 14:28:26,317 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 8.12280701754386) internal successors, (463), 57 states have internal predecessors, (463), 0 states have call successors, (0), 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 183 [2022-03-15 14:28:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:28:26,523 INFO L225 Difference]: With dead ends: 62599 [2022-03-15 14:28:26,523 INFO L226 Difference]: Without dead ends: 58779 [2022-03-15 14:28:26,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 343 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4457 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2653, Invalid=14639, Unknown=0, NotChecked=0, Total=17292 [2022-03-15 14:28:26,528 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 3929 mSDsluCounter, 11732 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 10972 SdHoareTripleChecker+Invalid, 4551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:28:26,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3929 Valid, 10972 Invalid, 4551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 3762 Invalid, 0 Unknown, 548 Unchecked, 1.4s Time] [2022-03-15 14:28:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58779 states. [2022-03-15 14:28:27,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58779 to 26495. [2022-03-15 14:28:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26495 states, 26494 states have (on average 3.5810749603683854) internal successors, (94877), 26494 states have internal predecessors, (94877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26495 states to 26495 states and 94877 transitions. [2022-03-15 14:28:27,506 INFO L78 Accepts]: Start accepts. Automaton has 26495 states and 94877 transitions. Word has length 183 [2022-03-15 14:28:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:28:27,506 INFO L470 AbstractCegarLoop]: Abstraction has 26495 states and 94877 transitions. [2022-03-15 14:28:27,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 8.12280701754386) internal successors, (463), 57 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 26495 states and 94877 transitions. [2022-03-15 14:28:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-15 14:28:27,766 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:28:27,766 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:28:27,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 14:28:27,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:27,986 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:28:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:28:27,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1375967481, now seen corresponding path program 7 times [2022-03-15 14:28:27,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:28:27,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428899955] [2022-03-15 14:28:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:28:27,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:28:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:28,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:28:28,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428899955] [2022-03-15 14:28:28,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428899955] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:28:28,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759826956] [2022-03-15 14:28:28,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:28:28,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:28,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:28:28,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:28:28,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 14:28:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:28,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 14:28:28,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:28:28,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:28:28,817 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-15 14:28:28,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-03-15 14:28:29,179 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:28:29,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-03-15 14:28:30,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:28:30,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:28:30,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:28:30,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:28:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:30,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:28:30,818 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:28:30,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 159 [2022-03-15 14:28:30,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 114 [2022-03-15 14:28:30,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2022-03-15 14:28:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:32,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759826956] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:32,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:32,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 23] total 63 [2022-03-15 14:28:32,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144129360] [2022-03-15 14:28:32,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:32,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 14:28:32,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 14:28:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3530, Unknown=4, NotChecked=0, Total=3906 [2022-03-15 14:28:32,726 INFO L87 Difference]: Start difference. First operand 26495 states and 94877 transitions. Second operand has 63 states, 63 states have (on average 7.380952380952381) internal successors, (465), 63 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:28:42,571 INFO L93 Difference]: Finished difference Result 123720 states and 441682 transitions. [2022-03-15 14:28:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 14:28:42,572 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 7.380952380952381) internal successors, (465), 63 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-03-15 14:28:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:28:43,253 INFO L225 Difference]: With dead ends: 123720 [2022-03-15 14:28:43,253 INFO L226 Difference]: Without dead ends: 106140 [2022-03-15 14:28:43,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 351 SyntacticMatches, 10 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7565 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3978, Invalid=21773, Unknown=9, NotChecked=0, Total=25760 [2022-03-15 14:28:43,254 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 5880 mSDsluCounter, 10947 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5880 SdHoareTripleChecker+Valid, 9894 SdHoareTripleChecker+Invalid, 5135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1248 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:28:43,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5880 Valid, 9894 Invalid, 5135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 3522 Invalid, 0 Unknown, 1248 Unchecked, 1.5s Time] [2022-03-15 14:28:43,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106140 states. [2022-03-15 14:28:44,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106140 to 38135. [2022-03-15 14:28:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38135 states, 38134 states have (on average 3.6607751612734045) internal successors, (139600), 38134 states have internal predecessors, (139600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38135 states to 38135 states and 139600 transitions. [2022-03-15 14:28:45,391 INFO L78 Accepts]: Start accepts. Automaton has 38135 states and 139600 transitions. Word has length 183 [2022-03-15 14:28:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:28:45,391 INFO L470 AbstractCegarLoop]: Abstraction has 38135 states and 139600 transitions. [2022-03-15 14:28:45,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 7.380952380952381) internal successors, (465), 63 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 38135 states and 139600 transitions. [2022-03-15 14:28:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-03-15 14:28:45,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:28:45,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:28:45,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 14:28:45,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 14:28:45,694 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:28:45,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:28:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1845570942, now seen corresponding path program 2 times [2022-03-15 14:28:45,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:28:45,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774561337] [2022-03-15 14:28:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:28:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:28:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:28:46,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:28:46,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774561337] [2022-03-15 14:28:46,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774561337] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:28:46,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371652627] [2022-03-15 14:28:46,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:28:46,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:46,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:28:46,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:28:46,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 14:28:46,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:28:46,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:28:46,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 14:28:46,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:28:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:28:46,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:28:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:28:47,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371652627] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:47,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:47,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-03-15 14:28:47,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113091746] [2022-03-15 14:28:47,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:47,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:28:47,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:28:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:28:47,547 INFO L87 Difference]: Start difference. First operand 38135 states and 139600 transitions. Second operand has 22 states, 22 states have (on average 18.454545454545453) internal successors, (406), 22 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:28:48,125 INFO L93 Difference]: Finished difference Result 52775 states and 189378 transitions. [2022-03-15 14:28:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:28:48,126 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 18.454545454545453) internal successors, (406), 22 states have internal predecessors, (406), 0 states have call successors, (0), 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 187 [2022-03-15 14:28:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:28:48,362 INFO L225 Difference]: With dead ends: 52775 [2022-03-15 14:28:48,363 INFO L226 Difference]: Without dead ends: 50283 [2022-03-15 14:28:48,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:28:48,366 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1363 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:28:48,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1363 Valid, 1824 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:28:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50283 states. [2022-03-15 14:28:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50283 to 41425. [2022-03-15 14:28:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41425 states, 41424 states have (on average 3.6698532251834686) internal successors, (152020), 41424 states have internal predecessors, (152020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41425 states to 41425 states and 152020 transitions. [2022-03-15 14:28:49,643 INFO L78 Accepts]: Start accepts. Automaton has 41425 states and 152020 transitions. Word has length 187 [2022-03-15 14:28:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:28:49,644 INFO L470 AbstractCegarLoop]: Abstraction has 41425 states and 152020 transitions. [2022-03-15 14:28:49,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.454545454545453) internal successors, (406), 22 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:28:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 41425 states and 152020 transitions. [2022-03-15 14:28:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-15 14:28:49,738 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:28:49,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:28:49,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 14:28:49,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 14:28:49,946 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:28:49,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:28:49,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1206815453, now seen corresponding path program 8 times [2022-03-15 14:28:49,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:28:49,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054583428] [2022-03-15 14:28:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:28:49,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:28:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:28:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:51,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:28:51,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054583428] [2022-03-15 14:28:51,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054583428] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:28:51,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237091300] [2022-03-15 14:28:51,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:28:51,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:28:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:28:51,045 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:28:51,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 14:28:51,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:28:51,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:28:51,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-15 14:28:51,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:28:51,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:28:51,431 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:28:51,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:28:52,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:28:52,696 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-03-15 14:28:52,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-03-15 14:28:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:52,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:28:53,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:28:53,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 14:28:53,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-15 14:28:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:28:54,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237091300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:28:54,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:28:54,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 64 [2022-03-15 14:28:54,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53118451] [2022-03-15 14:28:54,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:28:54,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-15 14:28:54,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:28:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-15 14:28:54,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=3742, Unknown=1, NotChecked=0, Total=4032 [2022-03-15 14:28:54,969 INFO L87 Difference]: Start difference. First operand 41425 states and 152020 transitions. Second operand has 64 states, 64 states have (on average 7.25) internal successors, (464), 64 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:12,667 INFO L93 Difference]: Finished difference Result 167201 states and 600562 transitions. [2022-03-15 14:29:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-15 14:29:12,667 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 7.25) internal successors, (464), 64 states have internal predecessors, (464), 0 states have call successors, (0), 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 190 [2022-03-15 14:29:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:13,601 INFO L225 Difference]: With dead ends: 167201 [2022-03-15 14:29:13,602 INFO L226 Difference]: Without dead ends: 160336 [2022-03-15 14:29:13,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 346 SyntacticMatches, 22 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14366 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=4799, Invalid=34585, Unknown=18, NotChecked=0, Total=39402 [2022-03-15 14:29:13,610 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 5497 mSDsluCounter, 14623 mSDsCounter, 0 mSdLazyCounter, 5176 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 13646 SdHoareTripleChecker+Invalid, 7031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 5176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1404 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:13,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5497 Valid, 13646 Invalid, 7031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 5176 Invalid, 0 Unknown, 1404 Unchecked, 2.4s Time] [2022-03-15 14:29:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160336 states. [2022-03-15 14:29:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160336 to 62844. [2022-03-15 14:29:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62844 states, 62843 states have (on average 3.72248301322343) internal successors, (233932), 62843 states have internal predecessors, (233932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62844 states to 62844 states and 233932 transitions. [2022-03-15 14:29:17,224 INFO L78 Accepts]: Start accepts. Automaton has 62844 states and 233932 transitions. Word has length 190 [2022-03-15 14:29:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:17,225 INFO L470 AbstractCegarLoop]: Abstraction has 62844 states and 233932 transitions. [2022-03-15 14:29:17,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 7.25) internal successors, (464), 64 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 62844 states and 233932 transitions. [2022-03-15 14:29:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-15 14:29:17,469 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:17,469 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:17,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 14:29:17,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 14:29:17,686 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:29:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1799425197, now seen corresponding path program 9 times [2022-03-15 14:29:17,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:17,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697337085] [2022-03-15 14:29:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:29:19,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:19,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697337085] [2022-03-15 14:29:19,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697337085] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:29:19,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585509946] [2022-03-15 14:29:19,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:29:19,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:19,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:29:19,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:29:19,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 14:29:19,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:29:19,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:29:19,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 14:29:19,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:29:19,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:29:19,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:29:19,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:29:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-15 14:29:19,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:29:19,939 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_627 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_627) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2022-03-15 14:29:19,974 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:19,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-15 14:29:19,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-15 14:29:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 1 not checked. [2022-03-15 14:29:20,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585509946] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:29:20,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:29:20,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 42 [2022-03-15 14:29:20,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667868786] [2022-03-15 14:29:20,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:29:20,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:29:20,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:20,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:29:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1529, Unknown=1, NotChecked=78, Total=1722 [2022-03-15 14:29:20,715 INFO L87 Difference]: Start difference. First operand 62844 states and 233932 transitions. Second operand has 42 states, 42 states have (on average 10.547619047619047) internal successors, (443), 42 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:24,734 INFO L93 Difference]: Finished difference Result 79829 states and 293206 transitions. [2022-03-15 14:29:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 14:29:24,735 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 10.547619047619047) internal successors, (443), 42 states have internal predecessors, (443), 0 states have call successors, (0), 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 190 [2022-03-15 14:29:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:25,172 INFO L225 Difference]: With dead ends: 79829 [2022-03-15 14:29:25,172 INFO L226 Difference]: Without dead ends: 76650 [2022-03-15 14:29:25,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1281, Invalid=7278, Unknown=1, NotChecked=182, Total=8742 [2022-03-15 14:29:25,173 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1972 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 4588 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:25,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1972 Valid, 4588 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1776 Invalid, 0 Unknown, 353 Unchecked, 0.6s Time] [2022-03-15 14:29:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76650 states. [2022-03-15 14:29:26,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76650 to 62092. [2022-03-15 14:29:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62092 states, 62091 states have (on average 3.734663638852652) internal successors, (231889), 62091 states have internal predecessors, (231889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62092 states to 62092 states and 231889 transitions. [2022-03-15 14:29:27,183 INFO L78 Accepts]: Start accepts. Automaton has 62092 states and 231889 transitions. Word has length 190 [2022-03-15 14:29:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:27,183 INFO L470 AbstractCegarLoop]: Abstraction has 62092 states and 231889 transitions. [2022-03-15 14:29:27,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.547619047619047) internal successors, (443), 42 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 62092 states and 231889 transitions. [2022-03-15 14:29:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-15 14:29:27,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:27,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:27,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 14:29:27,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 14:29:27,532 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:29:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1618111305, now seen corresponding path program 10 times [2022-03-15 14:29:27,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:27,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413774206] [2022-03-15 14:29:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:27,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:30,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:30,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413774206] [2022-03-15 14:29:30,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413774206] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:29:30,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48207383] [2022-03-15 14:29:30,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:29:30,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:30,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:29:30,535 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:29:30,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 14:29:30,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:29:30,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:29:30,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 14:29:30,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:29:30,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:29:30,723 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:29:30,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-15 14:29:31,035 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-03-15 14:29:31,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-03-15 14:29:32,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:29:32,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-15 14:29:32,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-03-15 14:29:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:29:32,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:29:33,130 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:33,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 85 [2022-03-15 14:29:33,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2022-03-15 14:29:33,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2022-03-15 14:29:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:29:35,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48207383] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:29:35,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:29:35,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 25, 25] total 84 [2022-03-15 14:29:35,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731023999] [2022-03-15 14:29:35,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:29:35,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-15 14:29:35,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:35,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-15 14:29:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=6473, Unknown=27, NotChecked=0, Total=6972 [2022-03-15 14:29:35,435 INFO L87 Difference]: Start difference. First operand 62092 states and 231889 transitions. Second operand has 84 states, 84 states have (on average 5.75) internal successors, (483), 84 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:58,946 INFO L93 Difference]: Finished difference Result 230399 states and 830946 transitions. [2022-03-15 14:29:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-03-15 14:29:58,947 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 5.75) internal successors, (483), 84 states have internal predecessors, (483), 0 states have call successors, (0), 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 190 [2022-03-15 14:29:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:00,488 INFO L225 Difference]: With dead ends: 230399 [2022-03-15 14:30:00,488 INFO L226 Difference]: Without dead ends: 217333 [2022-03-15 14:30:00,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 343 SyntacticMatches, 27 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22530 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=6920, Invalid=55179, Unknown=151, NotChecked=0, Total=62250 [2022-03-15 14:30:00,499 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 8822 mSDsluCounter, 19419 mSDsCounter, 0 mSdLazyCounter, 6884 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8822 SdHoareTripleChecker+Valid, 17726 SdHoareTripleChecker+Invalid, 10376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 6884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2885 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:00,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8822 Valid, 17726 Invalid, 10376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [607 Valid, 6884 Invalid, 0 Unknown, 2885 Unchecked, 3.3s Time] [2022-03-15 14:30:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217333 states. [2022-03-15 14:30:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217333 to 68855. [2022-03-15 14:30:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68855 states, 68854 states have (on average 3.729674383478084) internal successors, (256803), 68854 states have internal predecessors, (256803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68855 states to 68855 states and 256803 transitions. [2022-03-15 14:30:05,365 INFO L78 Accepts]: Start accepts. Automaton has 68855 states and 256803 transitions. Word has length 190 [2022-03-15 14:30:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:05,365 INFO L470 AbstractCegarLoop]: Abstraction has 68855 states and 256803 transitions. [2022-03-15 14:30:05,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 5.75) internal successors, (483), 84 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 68855 states and 256803 transitions. [2022-03-15 14:30:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-15 14:30:05,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:05,539 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:05,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 14:30:05,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:05,752 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:30:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2119358203, now seen corresponding path program 11 times [2022-03-15 14:30:05,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:05,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544117867] [2022-03-15 14:30:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:05,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:30:07,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:07,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544117867] [2022-03-15 14:30:07,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544117867] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:07,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082654951] [2022-03-15 14:30:07,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:30:07,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:07,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:07,295 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:07,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 14:30:07,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:30:07,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:07,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-15 14:30:07,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:07,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:30:07,479 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 14:30:07,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-15 14:30:07,703 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-03-15 14:30:07,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-03-15 14:30:08,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:30:08,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 14:30:08,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:30:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-15 14:30:08,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:08,496 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_731 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_731) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2022-03-15 14:30:08,516 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_731 (Array Int Int)) (v_ArrVal_730 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_730) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_731) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2022-03-15 14:30:08,523 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:30:08,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 159 [2022-03-15 14:30:08,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 126 [2022-03-15 14:30:08,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 102 [2022-03-15 14:30:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-15 14:30:09,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082654951] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:09,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:09,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 16, 14] total 45 [2022-03-15 14:30:09,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82989680] [2022-03-15 14:30:09,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:09,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:30:09,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:30:09,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1682, Unknown=2, NotChecked=166, Total=1980 [2022-03-15 14:30:09,474 INFO L87 Difference]: Start difference. First operand 68855 states and 256803 transitions. Second operand has 45 states, 45 states have (on average 8.71111111111111) internal successors, (392), 45 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:13,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:13,708 INFO L93 Difference]: Finished difference Result 82696 states and 305777 transitions. [2022-03-15 14:30:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 14:30:13,708 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.71111111111111) internal successors, (392), 45 states have internal predecessors, (392), 0 states have call successors, (0), 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 190 [2022-03-15 14:30:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:14,201 INFO L225 Difference]: With dead ends: 82696 [2022-03-15 14:30:14,201 INFO L226 Difference]: Without dead ends: 77167 [2022-03-15 14:30:14,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 364 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2252 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1576, Invalid=8530, Unknown=2, NotChecked=398, Total=10506 [2022-03-15 14:30:14,204 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1891 mSDsluCounter, 4354 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 592 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:14,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1891 Valid, 4246 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1591 Invalid, 0 Unknown, 592 Unchecked, 0.6s Time] [2022-03-15 14:30:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77167 states. [2022-03-15 14:30:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77167 to 60005. [2022-03-15 14:30:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60005 states, 60004 states have (on average 3.784447703486434) internal successors, (227082), 60004 states have internal predecessors, (227082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60005 states to 60005 states and 227082 transitions. [2022-03-15 14:30:16,076 INFO L78 Accepts]: Start accepts. Automaton has 60005 states and 227082 transitions. Word has length 190 [2022-03-15 14:30:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:16,076 INFO L470 AbstractCegarLoop]: Abstraction has 60005 states and 227082 transitions. [2022-03-15 14:30:16,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.71111111111111) internal successors, (392), 45 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 60005 states and 227082 transitions. [2022-03-15 14:30:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-15 14:30:16,220 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:16,220 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:16,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 14:30:16,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-03-15 14:30:16,437 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:30:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 964566045, now seen corresponding path program 1 times [2022-03-15 14:30:16,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:16,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089246737] [2022-03-15 14:30:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:16,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:30:16,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:16,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089246737] [2022-03-15 14:30:16,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089246737] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:16,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22648483] [2022-03-15 14:30:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:16,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:16,795 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:16,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 14:30:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:16,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-15 14:30:16,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:18,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 14:30:18,115 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:30:18,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-15 14:30:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:30:18,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:18,314 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:30:18,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-15 14:30:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:30:19,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22648483] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:19,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:19,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 15] total 49 [2022-03-15 14:30:19,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692418508] [2022-03-15 14:30:19,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:19,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 14:30:19,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 14:30:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1940, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:30:19,164 INFO L87 Difference]: Start difference. First operand 60005 states and 227082 transitions. Second operand has 49 states, 49 states have (on average 8.244897959183673) internal successors, (404), 49 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:20,534 INFO L93 Difference]: Finished difference Result 101198 states and 373769 transitions. [2022-03-15 14:30:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:30:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.244897959183673) internal successors, (404), 49 states have internal predecessors, (404), 0 states have call successors, (0), 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 195 [2022-03-15 14:30:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:20,889 INFO L225 Difference]: With dead ends: 101198 [2022-03-15 14:30:20,889 INFO L226 Difference]: Without dead ends: 92207 [2022-03-15 14:30:20,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=905, Invalid=3925, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 14:30:20,891 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1810 mSDsluCounter, 4957 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:20,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 4653 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1286 Invalid, 0 Unknown, 66 Unchecked, 0.4s Time] [2022-03-15 14:30:21,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92207 states. [2022-03-15 14:30:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92207 to 62418. [2022-03-15 14:30:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62418 states, 62417 states have (on average 3.781549898264896) internal successors, (236033), 62417 states have internal predecessors, (236033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62418 states to 62418 states and 236033 transitions. [2022-03-15 14:30:23,396 INFO L78 Accepts]: Start accepts. Automaton has 62418 states and 236033 transitions. Word has length 195 [2022-03-15 14:30:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:23,396 INFO L470 AbstractCegarLoop]: Abstraction has 62418 states and 236033 transitions. [2022-03-15 14:30:23,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.244897959183673) internal successors, (404), 49 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:23,396 INFO L276 IsEmpty]: Start isEmpty. Operand 62418 states and 236033 transitions. [2022-03-15 14:30:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-15 14:30:23,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:23,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:23,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 14:30:23,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:23,777 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:30:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1624057675, now seen corresponding path program 2 times [2022-03-15 14:30:23,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:23,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251074832] [2022-03-15 14:30:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:30:24,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:24,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251074832] [2022-03-15 14:30:24,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251074832] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:24,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947930165] [2022-03-15 14:30:24,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:30:24,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:24,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:24,188 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:24,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 14:30:24,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:30:24,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:24,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-15 14:30:24,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:25,377 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-15 14:30:25,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-03-15 14:30:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:30:25,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:25,653 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:30:25,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-15 14:30:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:30:26,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947930165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:26,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:26,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 15] total 45 [2022-03-15 14:30:26,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899810287] [2022-03-15 14:30:26,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:26,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:30:26,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:30:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:30:26,616 INFO L87 Difference]: Start difference. First operand 62418 states and 236033 transitions. Second operand has 45 states, 45 states have (on average 8.977777777777778) internal successors, (404), 45 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:29,958 INFO L93 Difference]: Finished difference Result 172944 states and 652354 transitions. [2022-03-15 14:30:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:30:29,959 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.977777777777778) internal successors, (404), 45 states have internal predecessors, (404), 0 states have call successors, (0), 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 195 [2022-03-15 14:30:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:31,472 INFO L225 Difference]: With dead ends: 172944 [2022-03-15 14:30:31,472 INFO L226 Difference]: Without dead ends: 165528 [2022-03-15 14:30:31,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1065, Invalid=5415, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 14:30:31,474 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 2300 mSDsluCounter, 6660 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:31,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2300 Valid, 6175 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2236 Invalid, 0 Unknown, 103 Unchecked, 0.9s Time] [2022-03-15 14:30:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165528 states. [2022-03-15 14:30:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165528 to 92918. [2022-03-15 14:30:35,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92918 states, 92917 states have (on average 3.795376518828632) internal successors, (352655), 92917 states have internal predecessors, (352655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92918 states to 92918 states and 352655 transitions. [2022-03-15 14:30:36,065 INFO L78 Accepts]: Start accepts. Automaton has 92918 states and 352655 transitions. Word has length 195 [2022-03-15 14:30:36,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:36,066 INFO L470 AbstractCegarLoop]: Abstraction has 92918 states and 352655 transitions. [2022-03-15 14:30:36,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.977777777777778) internal successors, (404), 45 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 92918 states and 352655 transitions. [2022-03-15 14:30:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-15 14:30:36,312 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:36,313 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:36,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 14:30:36,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:36,531 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:30:36,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1578591765, now seen corresponding path program 3 times [2022-03-15 14:30:36,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:36,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010796674] [2022-03-15 14:30:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:30:38,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:38,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010796674] [2022-03-15 14:30:38,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010796674] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:38,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621276814] [2022-03-15 14:30:38,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:30:38,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:38,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:38,450 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:38,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 14:30:38,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:30:38,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:38,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:30:38,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:38,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:30:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-15 14:30:38,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:39,088 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:30:39,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-15 14:30:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-15 14:30:39,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621276814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:39,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:39,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 6, 6] total 42 [2022-03-15 14:30:39,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730603381] [2022-03-15 14:30:39,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:39,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:30:39,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:30:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1577, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:30:39,314 INFO L87 Difference]: Start difference. First operand 92918 states and 352655 transitions. Second operand has 42 states, 42 states have (on average 7.619047619047619) internal successors, (320), 42 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:43,759 INFO L93 Difference]: Finished difference Result 161926 states and 605633 transitions. [2022-03-15 14:30:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 14:30:43,760 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.619047619047619) internal successors, (320), 42 states have internal predecessors, (320), 0 states have call successors, (0), 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 195 [2022-03-15 14:30:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:44,784 INFO L225 Difference]: With dead ends: 161926 [2022-03-15 14:30:44,785 INFO L226 Difference]: Without dead ends: 161926 [2022-03-15 14:30:44,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=827, Invalid=8485, Unknown=0, NotChecked=0, Total=9312 [2022-03-15 14:30:44,786 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 1719 mSDsluCounter, 6728 mSDsCounter, 0 mSdLazyCounter, 3318 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 6493 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:44,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 6493 Invalid, 3382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3318 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 14:30:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161926 states. [2022-03-15 14:30:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161926 to 105618. [2022-03-15 14:30:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105618 states, 105617 states have (on average 3.8081748203414225) internal successors, (402208), 105617 states have internal predecessors, (402208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105618 states to 105618 states and 402208 transitions. [2022-03-15 14:30:49,588 INFO L78 Accepts]: Start accepts. Automaton has 105618 states and 402208 transitions. Word has length 195 [2022-03-15 14:30:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:49,588 INFO L470 AbstractCegarLoop]: Abstraction has 105618 states and 402208 transitions. [2022-03-15 14:30:49,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.619047619047619) internal successors, (320), 42 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 105618 states and 402208 transitions. [2022-03-15 14:30:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-15 14:30:50,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:50,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:50,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-15 14:30:50,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-15 14:30:50,416 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:30:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1542428967, now seen corresponding path program 4 times [2022-03-15 14:30:50,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:50,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115020476] [2022-03-15 14:30:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:30:51,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:51,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115020476] [2022-03-15 14:30:51,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115020476] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:51,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477976913] [2022-03-15 14:30:51,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:30:51,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:51,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:52,000 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:52,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 14:30:52,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:30:52,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:52,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-15 14:30:52,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:52,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-03-15 14:30:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:30:53,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:53,319 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:30:53,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-15 14:30:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:30:54,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477976913] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:54,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:54,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 14, 15] total 62 [2022-03-15 14:30:54,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511806059] [2022-03-15 14:30:54,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:54,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-15 14:30:54,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-15 14:30:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=3254, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:30:54,077 INFO L87 Difference]: Start difference. First operand 105618 states and 402208 transitions. Second operand has 62 states, 62 states have (on average 7.274193548387097) internal successors, (451), 62 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:31:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:31:03,272 INFO L93 Difference]: Finished difference Result 284787 states and 1074880 transitions. [2022-03-15 14:31:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-15 14:31:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.274193548387097) internal successors, (451), 62 states have internal predecessors, (451), 0 states have call successors, (0), 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 195 [2022-03-15 14:31:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:31:05,006 INFO L225 Difference]: With dead ends: 284787 [2022-03-15 14:31:05,006 INFO L226 Difference]: Without dead ends: 273366 [2022-03-15 14:31:05,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8490 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3369, Invalid=25701, Unknown=0, NotChecked=0, Total=29070 [2022-03-15 14:31:05,008 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 4757 mSDsluCounter, 11060 mSDsCounter, 0 mSdLazyCounter, 5207 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 10442 SdHoareTripleChecker+Invalid, 5510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 5207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:31:05,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4757 Valid, 10442 Invalid, 5510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 5207 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 14:31:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273366 states. [2022-03-15 14:31:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273366 to 165041. [2022-03-15 14:31:12,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165041 states, 165040 states have (on average 3.876666262724188) internal successors, (639805), 165040 states have internal predecessors, (639805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:31:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165041 states to 165041 states and 639805 transitions. [2022-03-15 14:31:13,840 INFO L78 Accepts]: Start accepts. Automaton has 165041 states and 639805 transitions. Word has length 195 [2022-03-15 14:31:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:31:13,840 INFO L470 AbstractCegarLoop]: Abstraction has 165041 states and 639805 transitions. [2022-03-15 14:31:13,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.274193548387097) internal successors, (451), 62 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:31:13,841 INFO L276 IsEmpty]: Start isEmpty. Operand 165041 states and 639805 transitions. [2022-03-15 14:31:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-15 14:31:14,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:31:14,656 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:31:14,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 14:31:14,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:31:14,875 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 14:31:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:31:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash -268763095, now seen corresponding path program 5 times [2022-03-15 14:31:14,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:31:14,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066600178] [2022-03-15 14:31:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:31:14,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:31:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:31:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:31:16,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:31:16,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066600178] [2022-03-15 14:31:16,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066600178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:31:16,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307083075] [2022-03-15 14:31:16,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:31:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:31:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:31:16,895 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:31:16,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 14:31:17,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:31:17,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:31:17,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-15 14:31:17,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:31:17,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-03-15 14:31:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:31:18,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:31:18,262 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-15 14:31:18,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-03-15 14:31:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-15 14:31:19,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307083075] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:31:19,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:31:19,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19, 15] total 67 [2022-03-15 14:31:19,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050430967] [2022-03-15 14:31:19,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:31:19,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-03-15 14:31:19,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:31:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-03-15 14:31:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=3992, Unknown=0, NotChecked=0, Total=4422 [2022-03-15 14:31:19,004 INFO L87 Difference]: Start difference. First operand 165041 states and 639805 transitions. Second operand has 67 states, 67 states have (on average 6.731343283582089) internal successors, (451), 67 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:31:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:31:35,163 INFO L93 Difference]: Finished difference Result 365769 states and 1365186 transitions. [2022-03-15 14:31:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-15 14:31:35,175 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.731343283582089) internal successors, (451), 67 states have internal predecessors, (451), 0 states have call successors, (0), 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 195 [2022-03-15 14:31:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted.