/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:34:41,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:34:41,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:34:41,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:34:41,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:34:41,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:34:41,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:34:41,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:34:41,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:34:41,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:34:41,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:34:41,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:34:41,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:34:41,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:34:41,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:34:41,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:34:41,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:34:41,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:34:41,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:34:41,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:34:41,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:34:41,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:34:41,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:34:41,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:34:41,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:34:41,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:34:41,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:34:41,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:34:41,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:34:41,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:34:41,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:34:41,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:34:41,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:34:41,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:34:41,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:34:41,507 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:34:41,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:34:41,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:34:41,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:34:41,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:34:41,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:34:41,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:34:41,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:34:41,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:34:41,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:34:41,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:34:41,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:34:41,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:34:41,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:34:41,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:34:41,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:34:41,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:34:41,511 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:34:41,511 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:34:41,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:34:41,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:34:41,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:34:41,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:34:41,703 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:34:41,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2022-01-10 18:34:41,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78cc17d54/937b4ffae3314180b8cda41e3145760e/FLAG48191d9ec [2022-01-10 18:34:42,133 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:34:42,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2022-01-10 18:34:42,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78cc17d54/937b4ffae3314180b8cda41e3145760e/FLAG48191d9ec [2022-01-10 18:34:42,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78cc17d54/937b4ffae3314180b8cda41e3145760e [2022-01-10 18:34:42,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:34:42,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:34:42,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:34:42,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:34:42,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:34:42,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1a8037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42, skipping insertion in model container [2022-01-10 18:34:42,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:34:42,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:34:42,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c[9376,9389] [2022-01-10 18:34:42,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:34:42,356 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:34:42,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c[9376,9389] [2022-01-10 18:34:42,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:34:42,393 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:34:42,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42 WrapperNode [2022-01-10 18:34:42,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:34:42,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:34:42,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:34:42,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:34:42,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,424 INFO L137 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 299 [2022-01-10 18:34:42,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:34:42,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:34:42,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:34:42,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:34:42,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:34:42,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:34:42,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:34:42,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:34:42,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:42,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:34:42,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:34:42,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:34:42,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:34:42,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:34:42,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:34:42,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:34:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:34:42,594 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:34:42,595 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:34:42,910 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:34:42,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:34:42,916 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:34:42,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:42 BoogieIcfgContainer [2022-01-10 18:34:42,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:34:42,918 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:34:42,918 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:34:42,919 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:34:42,921 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:42" (1/1) ... [2022-01-10 18:34:43,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:34:43 BasicIcfg [2022-01-10 18:34:43,193 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:34:43,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:34:43,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:34:43,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:34:43,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:34:42" (1/4) ... [2022-01-10 18:34:43,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226e71a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:34:43, skipping insertion in model container [2022-01-10 18:34:43,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:42" (2/4) ... [2022-01-10 18:34:43,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226e71a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:34:43, skipping insertion in model container [2022-01-10 18:34:43,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:42" (3/4) ... [2022-01-10 18:34:43,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226e71a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:34:43, skipping insertion in model container [2022-01-10 18:34:43,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:34:43" (4/4) ... [2022-01-10 18:34:43,201 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-10 18:34:43,205 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:34:43,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:34:43,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:34:43,256 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:34:43,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:34:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.690721649484536) internal successors, (164), 98 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 18:34:43,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:43,281 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] [2022-01-10 18:34:43,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1615092416, now seen corresponding path program 1 times [2022-01-10 18:34:43,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:43,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146226349] [2022-01-10 18:34:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:43,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:43,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:43,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146226349] [2022-01-10 18:34:43,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146226349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:43,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:43,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:34:43,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738242883] [2022-01-10 18:34:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:43,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:34:43,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:34:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:34:43,533 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.690721649484536) internal successors, (164), 98 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) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:43,565 INFO L93 Difference]: Finished difference Result 165 states and 271 transitions. [2022-01-10 18:34:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:34:43,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-01-10 18:34:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:43,578 INFO L225 Difference]: With dead ends: 165 [2022-01-10 18:34:43,578 INFO L226 Difference]: Without dead ends: 95 [2022-01-10 18:34:43,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:34:43,586 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:43,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-10 18:34:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-01-10 18:34:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 94 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) [2022-01-10 18:34:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 157 transitions. [2022-01-10 18:34:43,624 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 157 transitions. Word has length 29 [2022-01-10 18:34:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:43,625 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 157 transitions. [2022-01-10 18:34:43,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 157 transitions. [2022-01-10 18:34:43,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 18:34:43,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:43,628 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] [2022-01-10 18:34:43,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:34:43,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1682099169, now seen corresponding path program 1 times [2022-01-10 18:34:43,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:43,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398472485] [2022-01-10 18:34:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:43,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:43,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:43,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398472485] [2022-01-10 18:34:43,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398472485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:43,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:43,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:34:43,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925622373] [2022-01-10 18:34:43,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:43,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:34:43,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:43,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:34:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:34:43,862 INFO L87 Difference]: Start difference. First operand 95 states and 157 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:43,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:43,945 INFO L93 Difference]: Finished difference Result 164 states and 264 transitions. [2022-01-10 18:34:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:34:43,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-01-10 18:34:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:43,948 INFO L225 Difference]: With dead ends: 164 [2022-01-10 18:34:43,948 INFO L226 Difference]: Without dead ends: 95 [2022-01-10 18:34:43,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:34:43,949 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:43,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 593 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-10 18:34:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-01-10 18:34:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:43,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2022-01-10 18:34:43,957 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 29 [2022-01-10 18:34:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:43,957 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2022-01-10 18:34:43,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:43,957 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2022-01-10 18:34:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:34:43,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:43,958 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] [2022-01-10 18:34:43,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:34:43,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:43,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1032255551, now seen corresponding path program 1 times [2022-01-10 18:34:43,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:43,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517336908] [2022-01-10 18:34:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:43,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:44,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:44,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517336908] [2022-01-10 18:34:44,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517336908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:44,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:44,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:44,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462769040] [2022-01-10 18:34:44,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:44,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:44,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:44,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:44,105 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:44,120 INFO L93 Difference]: Finished difference Result 213 states and 319 transitions. [2022-01-10 18:34:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:44,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 18:34:44,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:44,123 INFO L225 Difference]: With dead ends: 213 [2022-01-10 18:34:44,123 INFO L226 Difference]: Without dead ends: 148 [2022-01-10 18:34:44,126 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 [2022-01-10 18:34:44,128 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 87 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:44,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-10 18:34:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2022-01-10 18:34:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4758620689655173) internal successors, (214), 145 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 214 transitions. [2022-01-10 18:34:44,142 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 214 transitions. Word has length 52 [2022-01-10 18:34:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:44,142 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 214 transitions. [2022-01-10 18:34:44,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 214 transitions. [2022-01-10 18:34:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:34:44,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:44,143 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] [2022-01-10 18:34:44,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:34:44,144 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash -128418629, now seen corresponding path program 1 times [2022-01-10 18:34:44,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:44,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768472309] [2022-01-10 18:34:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:44,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:44,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:44,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768472309] [2022-01-10 18:34:44,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768472309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:44,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:44,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:44,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292820055] [2022-01-10 18:34:44,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:44,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:44,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:44,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:44,255 INFO L87 Difference]: Start difference. First operand 146 states and 214 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:44,274 INFO L93 Difference]: Finished difference Result 354 states and 542 transitions. [2022-01-10 18:34:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 18:34:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:44,277 INFO L225 Difference]: With dead ends: 354 [2022-01-10 18:34:44,277 INFO L226 Difference]: Without dead ends: 238 [2022-01-10 18:34:44,279 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 [2022-01-10 18:34:44,287 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 82 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:44,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 280 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-01-10 18:34:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-01-10 18:34:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 235 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2022-01-10 18:34:44,300 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 53 [2022-01-10 18:34:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:44,300 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2022-01-10 18:34:44,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2022-01-10 18:34:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:34:44,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:44,301 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] [2022-01-10 18:34:44,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:34:44,302 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1864240190, now seen corresponding path program 1 times [2022-01-10 18:34:44,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:44,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534946317] [2022-01-10 18:34:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:44,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:44,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:44,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534946317] [2022-01-10 18:34:44,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534946317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:44,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:44,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:44,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895725473] [2022-01-10 18:34:44,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:44,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:44,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:44,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:44,424 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:44,442 INFO L93 Difference]: Finished difference Result 600 states and 925 transitions. [2022-01-10 18:34:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:44,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 18:34:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:44,445 INFO L225 Difference]: With dead ends: 600 [2022-01-10 18:34:44,445 INFO L226 Difference]: Without dead ends: 394 [2022-01-10 18:34:44,447 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 [2022-01-10 18:34:44,447 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 77 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:44,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 271 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:44,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-10 18:34:44,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2022-01-10 18:34:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5217391304347827) internal successors, (595), 391 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 595 transitions. [2022-01-10 18:34:44,472 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 595 transitions. Word has length 54 [2022-01-10 18:34:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:44,473 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 595 transitions. [2022-01-10 18:34:44,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 595 transitions. [2022-01-10 18:34:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 18:34:44,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:44,480 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] [2022-01-10 18:34:44,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:34:44,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:44,481 INFO L85 PathProgramCache]: Analyzing trace with hash -215152358, now seen corresponding path program 1 times [2022-01-10 18:34:44,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:44,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762156652] [2022-01-10 18:34:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:44,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:44,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:44,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762156652] [2022-01-10 18:34:44,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762156652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:44,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:44,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:34:44,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899377763] [2022-01-10 18:34:44,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:44,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:34:44,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:34:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:34:44,673 INFO L87 Difference]: Start difference. First operand 392 states and 595 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:45,011 INFO L93 Difference]: Finished difference Result 2656 states and 4104 transitions. [2022-01-10 18:34:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:34:45,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 18:34:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:45,022 INFO L225 Difference]: With dead ends: 2656 [2022-01-10 18:34:45,023 INFO L226 Difference]: Without dead ends: 2294 [2022-01-10 18:34:45,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 18:34:45,026 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 749 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:45,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 890 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:34:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2022-01-10 18:34:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1388. [2022-01-10 18:34:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 1.5392934390771449) internal successors, (2135), 1387 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2135 transitions. [2022-01-10 18:34:45,092 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2135 transitions. Word has length 55 [2022-01-10 18:34:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:45,093 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 2135 transitions. [2022-01-10 18:34:45,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2135 transitions. [2022-01-10 18:34:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:34:45,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:45,096 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] [2022-01-10 18:34:45,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:34:45,096 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 56663746, now seen corresponding path program 1 times [2022-01-10 18:34:45,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:45,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309969821] [2022-01-10 18:34:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:45,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:45,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:45,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309969821] [2022-01-10 18:34:45,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309969821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:45,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:45,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:34:45,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004830410] [2022-01-10 18:34:45,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:45,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:34:45,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:34:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:34:45,399 INFO L87 Difference]: Start difference. First operand 1388 states and 2135 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:46,155 INFO L93 Difference]: Finished difference Result 7170 states and 11092 transitions. [2022-01-10 18:34:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:34:46,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 18:34:46,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:46,172 INFO L225 Difference]: With dead ends: 7170 [2022-01-10 18:34:46,173 INFO L226 Difference]: Without dead ends: 5812 [2022-01-10 18:34:46,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:34:46,176 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 738 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:46,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1090 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:34:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-01-10 18:34:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 2744. [2022-01-10 18:34:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2743 states have (on average 1.5220561429092234) internal successors, (4175), 2743 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4175 transitions. [2022-01-10 18:34:46,533 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4175 transitions. Word has length 56 [2022-01-10 18:34:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:46,533 INFO L470 AbstractCegarLoop]: Abstraction has 2744 states and 4175 transitions. [2022-01-10 18:34:46,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4175 transitions. [2022-01-10 18:34:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:34:46,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:46,534 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] [2022-01-10 18:34:46,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:34:46,535 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1726010128, now seen corresponding path program 1 times [2022-01-10 18:34:46,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:46,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182818455] [2022-01-10 18:34:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:46,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:46,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:46,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182818455] [2022-01-10 18:34:46,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182818455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:46,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:46,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:34:46,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606149961] [2022-01-10 18:34:46,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:46,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:34:46,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:34:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:34:46,639 INFO L87 Difference]: Start difference. First operand 2744 states and 4175 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:47,235 INFO L93 Difference]: Finished difference Result 5432 states and 8226 transitions. [2022-01-10 18:34:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:34:47,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 18:34:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:47,250 INFO L225 Difference]: With dead ends: 5432 [2022-01-10 18:34:47,250 INFO L226 Difference]: Without dead ends: 5430 [2022-01-10 18:34:47,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:34:47,254 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 380 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:47,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 681 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2022-01-10 18:34:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 2936. [2022-01-10 18:34:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2935 states have (on average 1.4879045996592846) internal successors, (4367), 2935 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4367 transitions. [2022-01-10 18:34:47,637 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4367 transitions. Word has length 57 [2022-01-10 18:34:47,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:47,637 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 4367 transitions. [2022-01-10 18:34:47,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4367 transitions. [2022-01-10 18:34:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:34:47,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:47,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:34:47,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:34:47,638 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:47,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1997092804, now seen corresponding path program 1 times [2022-01-10 18:34:47,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:47,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649214764] [2022-01-10 18:34:47,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:47,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:47,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:47,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649214764] [2022-01-10 18:34:47,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649214764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:47,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:47,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:47,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161293985] [2022-01-10 18:34:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:47,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:47,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:47,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:47,694 INFO L87 Difference]: Start difference. First operand 2936 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:48,200 INFO L93 Difference]: Finished difference Result 8268 states and 12241 transitions. [2022-01-10 18:34:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 18:34:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:48,214 INFO L225 Difference]: With dead ends: 8268 [2022-01-10 18:34:48,214 INFO L226 Difference]: Without dead ends: 5362 [2022-01-10 18:34:48,216 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 [2022-01-10 18:34:48,216 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 67 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:48,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 231 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2022-01-10 18:34:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5296. [2022-01-10 18:34:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 1.456279508970727) internal successors, (7711), 5295 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 7711 transitions. [2022-01-10 18:34:48,780 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 7711 transitions. Word has length 58 [2022-01-10 18:34:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:48,780 INFO L470 AbstractCegarLoop]: Abstraction has 5296 states and 7711 transitions. [2022-01-10 18:34:48,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 7711 transitions. [2022-01-10 18:34:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:34:48,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:48,781 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] [2022-01-10 18:34:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:34:48,781 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1642480375, now seen corresponding path program 1 times [2022-01-10 18:34:48,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:48,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332063898] [2022-01-10 18:34:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:48,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:48,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332063898] [2022-01-10 18:34:48,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332063898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:48,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:48,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:48,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710102693] [2022-01-10 18:34:48,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:48,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:48,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:48,823 INFO L87 Difference]: Start difference. First operand 5296 states and 7711 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:49,596 INFO L93 Difference]: Finished difference Result 10407 states and 15237 transitions. [2022-01-10 18:34:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 18:34:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:49,616 INFO L225 Difference]: With dead ends: 10407 [2022-01-10 18:34:49,616 INFO L226 Difference]: Without dead ends: 7500 [2022-01-10 18:34:49,620 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 [2022-01-10 18:34:49,620 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 88 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:49,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 310 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2022-01-10 18:34:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 7498. [2022-01-10 18:34:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7498 states, 7497 states have (on average 1.4449779911964786) internal successors, (10833), 7497 states have internal predecessors, (10833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 10833 transitions. [2022-01-10 18:34:50,526 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 10833 transitions. Word has length 59 [2022-01-10 18:34:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:50,526 INFO L470 AbstractCegarLoop]: Abstraction has 7498 states and 10833 transitions. [2022-01-10 18:34:50,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 10833 transitions. [2022-01-10 18:34:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:34:50,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:50,530 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 18:34:50,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:34:50,530 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1157505522, now seen corresponding path program 1 times [2022-01-10 18:34:50,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:50,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714137867] [2022-01-10 18:34:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:50,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:50,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:50,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714137867] [2022-01-10 18:34:50,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714137867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:50,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:50,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:50,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98224596] [2022-01-10 18:34:50,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:50,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:50,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:50,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:50,586 INFO L87 Difference]: Start difference. First operand 7498 states and 10833 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:51,258 INFO L93 Difference]: Finished difference Result 12725 states and 18446 transitions. [2022-01-10 18:34:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:51,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 18:34:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:51,275 INFO L225 Difference]: With dead ends: 12725 [2022-01-10 18:34:51,275 INFO L226 Difference]: Without dead ends: 5259 [2022-01-10 18:34:51,281 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 [2022-01-10 18:34:51,281 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 71 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:51,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 284 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2022-01-10 18:34:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5257. [2022-01-10 18:34:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 1.4414003044140031) internal successors, (7576), 5256 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7576 transitions. [2022-01-10 18:34:51,933 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7576 transitions. Word has length 82 [2022-01-10 18:34:51,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:51,934 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 7576 transitions. [2022-01-10 18:34:51,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7576 transitions. [2022-01-10 18:34:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:34:51,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:51,936 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 18:34:51,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:34:51,937 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1178736894, now seen corresponding path program 1 times [2022-01-10 18:34:51,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:51,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314066367] [2022-01-10 18:34:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:51,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:34:52,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:52,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314066367] [2022-01-10 18:34:52,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314066367] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:34:52,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682403396] [2022-01-10 18:34:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:52,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:34:52,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:34:52,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:34:52,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process