/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:45:36,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:45:36,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:45:36,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:45:36,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:45:36,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:45:36,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:45:36,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:45:36,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:45:36,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:45:36,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:45:36,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:45:36,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:45:36,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:45:36,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:45:36,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:45:36,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:45:36,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:45:36,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:45:36,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:45:36,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:45:36,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:45:36,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:45:36,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:45:36,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:45:36,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:45:36,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:45:36,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:45:36,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:45:36,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:45:36,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:45:36,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:45:36,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:45:36,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:45:36,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:45:36,760 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:45:36,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:45:36,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:45:36,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:45:36,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:45:36,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:45:36,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:45:36,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:45:36,762 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:45:36,762 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:45:36,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:45:36,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:45:36,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:45:36,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:45:36,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:45:36,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:45:36,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:45:36,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:45:36,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:45:36,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:45:36,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:45:36,764 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:45:36,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:45:36,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:45:36,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:45:36,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:45:36,766 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:45:36,766 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:45:36,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:45:36,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:45:36,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:45:36,985 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:45:36,986 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:45:36,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2022-01-10 12:45:37,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d97a70f/eff97c445b9c42ef98160edba1867637/FLAGd761b22fa [2022-01-10 12:45:37,427 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:45:37,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2022-01-10 12:45:37,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d97a70f/eff97c445b9c42ef98160edba1867637/FLAGd761b22fa [2022-01-10 12:45:37,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d97a70f/eff97c445b9c42ef98160edba1867637 [2022-01-10 12:45:37,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:45:37,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:45:37,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:45:37,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:45:37,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:45:37,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:45:37" (1/1) ... [2022-01-10 12:45:37,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d73c5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:37, skipping insertion in model container [2022-01-10 12:45:37,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:45:37" (1/1) ... [2022-01-10 12:45:37,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:45:37,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:45:38,081 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.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2022-01-10 12:45:38,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:45:38,092 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:45:38,133 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.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2022-01-10 12:45:38,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:45:38,146 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:45:38,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38 WrapperNode [2022-01-10 12:45:38,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:45:38,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:45:38,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:45:38,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:45:38,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,188 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 366 [2022-01-10 12:45:38,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:45:38,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:45:38,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:45:38,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:45:38,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:45:38,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:45:38,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:45:38,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:45:38,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:38,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:45:38,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:45:38,279 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 12:45:38,288 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 12:45:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:45:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:45:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:45:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:45:38,387 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:45:38,388 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:45:38,775 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:45:38,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:45:38,782 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:45:38,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:45:38 BoogieIcfgContainer [2022-01-10 12:45:38,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:45:38,784 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:45:38,784 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:45:38,796 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:45:38,798 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:45:38" (1/1) ... [2022-01-10 12:45:39,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:45:39 BasicIcfg [2022-01-10 12:45:39,164 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:45:39,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:45:39,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:45:39,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:45:39,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:45:37" (1/4) ... [2022-01-10 12:45:39,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214bf7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:45:39, skipping insertion in model container [2022-01-10 12:45:39,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:45:38" (2/4) ... [2022-01-10 12:45:39,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214bf7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:45:39, skipping insertion in model container [2022-01-10 12:45:39,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:45:38" (3/4) ... [2022-01-10 12:45:39,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214bf7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:45:39, skipping insertion in model container [2022-01-10 12:45:39,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:45:39" (4/4) ... [2022-01-10 12:45:39,172 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.cTransformedIcfg [2022-01-10 12:45:39,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:45:39,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:45:39,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:45:39,289 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 12:45:39,290 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:45:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 118 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:45:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 12:45:39,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:39,315 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] [2022-01-10 12:45:39,316 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1269030357, now seen corresponding path program 1 times [2022-01-10 12:45:39,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:39,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59656164] [2022-01-10 12:45:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:39,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:39,617 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 12:45:39,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59656164] [2022-01-10 12:45:39,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59656164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:39,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:39,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:45:39,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892964698] [2022-01-10 12:45:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:39,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:45:39,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:45:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:45:39,661 INFO L87 Difference]: Start difference. First operand has 119 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 118 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:45:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:39,699 INFO L93 Difference]: Finished difference Result 201 states and 330 transitions. [2022-01-10 12:45:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:45:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-10 12:45:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:39,712 INFO L225 Difference]: With dead ends: 201 [2022-01-10 12:45:39,712 INFO L226 Difference]: Without dead ends: 115 [2022-01-10 12:45:39,717 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 12:45:39,720 INFO L933 BasicCegarLoop]: 197 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, 197 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 12:45:39,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:45:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-10 12:45:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-01-10 12:45:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.6929824561403508) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 12:45:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 193 transitions. [2022-01-10 12:45:39,770 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 193 transitions. Word has length 33 [2022-01-10 12:45:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:39,771 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 193 transitions. [2022-01-10 12:45:39,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:45:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 193 transitions. [2022-01-10 12:45:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 12:45:39,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:39,776 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] [2022-01-10 12:45:39,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:45:39,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1014293812, now seen corresponding path program 1 times [2022-01-10 12:45:39,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:39,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005945268] [2022-01-10 12:45:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:39,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:39,966 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 12:45:39,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:39,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005945268] [2022-01-10 12:45:39,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005945268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:39,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:39,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:45:39,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071259319] [2022-01-10 12:45:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:39,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:45:39,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:45:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:45:39,972 INFO L87 Difference]: Start difference. First operand 115 states and 193 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:45:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:40,077 INFO L93 Difference]: Finished difference Result 196 states and 320 transitions. [2022-01-10 12:45:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:45:40,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-10 12:45:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:40,087 INFO L225 Difference]: With dead ends: 196 [2022-01-10 12:45:40,087 INFO L226 Difference]: Without dead ends: 115 [2022-01-10 12:45:40,091 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 12:45:40,093 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 3 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:45:40,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 729 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:45:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-10 12:45:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-01-10 12:45:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.412280701754386) internal successors, (161), 114 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:45:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2022-01-10 12:45:40,100 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 33 [2022-01-10 12:45:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:40,100 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2022-01-10 12:45:40,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:45:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2022-01-10 12:45:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:45:40,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:40,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:40,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:45:40,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1193467242, now seen corresponding path program 1 times [2022-01-10 12:45:40,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:40,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929335773] [2022-01-10 12:45:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:40,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:40,335 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 12:45:40,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:40,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929335773] [2022-01-10 12:45:40,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929335773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:40,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:40,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:45:40,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646159642] [2022-01-10 12:45:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:40,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:45:40,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:45:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:45:40,340 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 12:45:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:40,361 INFO L93 Difference]: Finished difference Result 260 states and 392 transitions. [2022-01-10 12:45:40,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:45:40,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 12:45:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:40,365 INFO L225 Difference]: With dead ends: 260 [2022-01-10 12:45:40,365 INFO L226 Difference]: Without dead ends: 183 [2022-01-10 12:45:40,367 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 12:45:40,371 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 111 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 384 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 12:45:40,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 384 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:45:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-10 12:45:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2022-01-10 12:45:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 180 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:45:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 267 transitions. [2022-01-10 12:45:40,391 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 267 transitions. Word has length 64 [2022-01-10 12:45:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:40,395 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 267 transitions. [2022-01-10 12:45:40,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 12:45:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 267 transitions. [2022-01-10 12:45:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:45:40,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:40,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:40,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:45:40,403 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1578429460, now seen corresponding path program 1 times [2022-01-10 12:45:40,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:40,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983953465] [2022-01-10 12:45:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:40,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:40,594 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 12:45:40,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:40,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983953465] [2022-01-10 12:45:40,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983953465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:40,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:40,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:45:40,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584711041] [2022-01-10 12:45:40,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:40,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:45:40,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:40,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:45:40,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:45:40,597 INFO L87 Difference]: Start difference. First operand 181 states and 267 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 12:45:40,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:40,614 INFO L93 Difference]: Finished difference Result 443 states and 685 transitions. [2022-01-10 12:45:40,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:45:40,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 12:45:40,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:40,617 INFO L225 Difference]: With dead ends: 443 [2022-01-10 12:45:40,617 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 12:45:40,620 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 12:45:40,625 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 107 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 370 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 12:45:40,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 370 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:45:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 12:45:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-01-10 12:45:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.5252525252525253) internal successors, (453), 297 states have internal predecessors, (453), 0 states have call successors, (0), 0 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 12:45:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 453 transitions. [2022-01-10 12:45:40,643 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 453 transitions. Word has length 64 [2022-01-10 12:45:40,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:40,644 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 453 transitions. [2022-01-10 12:45:40,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 12:45:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 453 transitions. [2022-01-10 12:45:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:45:40,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:40,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:40,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:45:40,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:40,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:40,645 INFO L85 PathProgramCache]: Analyzing trace with hash 552909238, now seen corresponding path program 1 times [2022-01-10 12:45:40,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:40,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251514689] [2022-01-10 12:45:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:40,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:40,810 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 12:45:40,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:40,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251514689] [2022-01-10 12:45:40,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251514689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:40,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:40,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:45:40,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078954264] [2022-01-10 12:45:40,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:40,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:45:40,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:40,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:45:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:45:40,813 INFO L87 Difference]: Start difference. First operand 298 states and 453 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 12:45:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:40,835 INFO L93 Difference]: Finished difference Result 770 states and 1203 transitions. [2022-01-10 12:45:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:45:40,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:45:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:40,838 INFO L225 Difference]: With dead ends: 770 [2022-01-10 12:45:40,838 INFO L226 Difference]: Without dead ends: 510 [2022-01-10 12:45:40,838 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 12:45:40,839 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 102 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 361 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 12:45:40,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 361 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:45:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-01-10 12:45:40,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2022-01-10 12:45:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.544378698224852) internal successors, (783), 507 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 12:45:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 783 transitions. [2022-01-10 12:45:40,862 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 783 transitions. Word has length 65 [2022-01-10 12:45:40,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:40,864 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 783 transitions. [2022-01-10 12:45:40,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 12:45:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 783 transitions. [2022-01-10 12:45:40,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:45:40,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:40,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:40,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:45:40,873 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:40,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2103313877, now seen corresponding path program 1 times [2022-01-10 12:45:40,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:40,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810791812] [2022-01-10 12:45:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:40,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:41,049 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 12:45:41,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:41,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810791812] [2022-01-10 12:45:41,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810791812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:41,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:41,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:45:41,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675185428] [2022-01-10 12:45:41,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:41,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:45:41,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:45:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:45:41,051 INFO L87 Difference]: Start difference. First operand 508 states and 783 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 12:45:41,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:41,076 INFO L93 Difference]: Finished difference Result 1352 states and 2113 transitions. [2022-01-10 12:45:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:45:41,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 12:45:41,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:41,082 INFO L225 Difference]: With dead ends: 1352 [2022-01-10 12:45:41,082 INFO L226 Difference]: Without dead ends: 882 [2022-01-10 12:45:41,083 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 12:45:41,084 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 97 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 352 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 12:45:41,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 352 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:45:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-01-10 12:45:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 880. [2022-01-10 12:45:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.546075085324232) internal successors, (1359), 879 states have internal predecessors, (1359), 0 states have call successors, (0), 0 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 12:45:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1359 transitions. [2022-01-10 12:45:41,107 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1359 transitions. Word has length 66 [2022-01-10 12:45:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:41,108 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1359 transitions. [2022-01-10 12:45:41,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 12:45:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1359 transitions. [2022-01-10 12:45:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:45:41,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:41,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:41,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:45:41,110 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash 771968213, now seen corresponding path program 1 times [2022-01-10 12:45:41,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:41,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413292213] [2022-01-10 12:45:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:41,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:41,256 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 12:45:41,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:41,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413292213] [2022-01-10 12:45:41,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413292213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:41,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:41,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:45:41,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47652574] [2022-01-10 12:45:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:41,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:45:41,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:45:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:45:41,259 INFO L87 Difference]: Start difference. First operand 880 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:45:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:41,289 INFO L93 Difference]: Finished difference Result 2372 states and 3681 transitions. [2022-01-10 12:45:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:45:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 12:45:41,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:41,296 INFO L225 Difference]: With dead ends: 2372 [2022-01-10 12:45:41,296 INFO L226 Difference]: Without dead ends: 1530 [2022-01-10 12:45:41,298 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 12:45:41,299 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 92 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 343 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 12:45:41,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 343 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:45:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2022-01-10 12:45:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1528. [2022-01-10 12:45:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 1.5343811394891944) internal successors, (2343), 1527 states have internal predecessors, (2343), 0 states have call successors, (0), 0 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 12:45:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2343 transitions. [2022-01-10 12:45:41,334 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2343 transitions. Word has length 67 [2022-01-10 12:45:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:41,334 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 2343 transitions. [2022-01-10 12:45:41,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:45:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2343 transitions. [2022-01-10 12:45:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:45:41,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:41,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:41,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:45:41,336 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:41,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:41,336 INFO L85 PathProgramCache]: Analyzing trace with hash 284093290, now seen corresponding path program 1 times [2022-01-10 12:45:41,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:41,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761465512] [2022-01-10 12:45:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:41,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:41,552 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 12:45:41,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:41,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761465512] [2022-01-10 12:45:41,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761465512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:41,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:41,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:45:41,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558122194] [2022-01-10 12:45:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:41,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:45:41,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:45:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:45:41,554 INFO L87 Difference]: Start difference. First operand 1528 states and 2343 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 12:45:43,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:43,071 INFO L93 Difference]: Finished difference Result 15934 states and 24434 transitions. [2022-01-10 12:45:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:45:43,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 12:45:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:43,128 INFO L225 Difference]: With dead ends: 15934 [2022-01-10 12:45:43,128 INFO L226 Difference]: Without dead ends: 14444 [2022-01-10 12:45:43,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 12:45:43,135 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 1305 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:45:43,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1734 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:45:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14444 states. [2022-01-10 12:45:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14444 to 7032. [2022-01-10 12:45:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7032 states, 7031 states have (on average 1.5302232968283316) internal successors, (10759), 7031 states have internal predecessors, (10759), 0 states have call successors, (0), 0 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 12:45:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 10759 transitions. [2022-01-10 12:45:43,704 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 10759 transitions. Word has length 68 [2022-01-10 12:45:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:43,704 INFO L470 AbstractCegarLoop]: Abstraction has 7032 states and 10759 transitions. [2022-01-10 12:45:43,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 12:45:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 10759 transitions. [2022-01-10 12:45:43,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:45:43,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:43,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:43,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:45:43,708 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:43,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 133760784, now seen corresponding path program 1 times [2022-01-10 12:45:43,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:43,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073478567] [2022-01-10 12:45:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:43,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:44,138 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 12:45:44,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:44,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073478567] [2022-01-10 12:45:44,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073478567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:44,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:44,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:45:44,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815855935] [2022-01-10 12:45:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:44,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:45:44,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:45:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:45:44,140 INFO L87 Difference]: Start difference. First operand 7032 states and 10759 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 12:45:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:48,373 INFO L93 Difference]: Finished difference Result 43444 states and 66557 transitions. [2022-01-10 12:45:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:45:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:45:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:48,481 INFO L225 Difference]: With dead ends: 43444 [2022-01-10 12:45:48,481 INFO L226 Difference]: Without dead ends: 36450 [2022-01-10 12:45:48,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:45:48,501 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 1158 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:45:48,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 1503 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:45:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36450 states. [2022-01-10 12:45:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36450 to 14024. [2022-01-10 12:45:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14024 states, 14023 states have (on average 1.508878271411253) internal successors, (21159), 14023 states have internal predecessors, (21159), 0 states have call successors, (0), 0 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 12:45:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14024 states to 14024 states and 21159 transitions. [2022-01-10 12:45:51,157 INFO L78 Accepts]: Start accepts. Automaton has 14024 states and 21159 transitions. Word has length 69 [2022-01-10 12:45:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:51,158 INFO L470 AbstractCegarLoop]: Abstraction has 14024 states and 21159 transitions. [2022-01-10 12:45:51,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 12:45:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14024 states and 21159 transitions. [2022-01-10 12:45:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:45:51,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:51,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:51,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:45:51,162 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash -179010423, now seen corresponding path program 1 times [2022-01-10 12:45:51,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:51,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256462258] [2022-01-10 12:45:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:51,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:51,296 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 12:45:51,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:51,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256462258] [2022-01-10 12:45:51,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256462258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:51,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:51,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:45:51,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926765351] [2022-01-10 12:45:51,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:51,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:45:51,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:45:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:45:51,298 INFO L87 Difference]: Start difference. First operand 14024 states and 21159 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 12:45:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:45:55,570 INFO L93 Difference]: Finished difference Result 27215 states and 40901 transitions. [2022-01-10 12:45:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:45:55,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:45:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:45:55,636 INFO L225 Difference]: With dead ends: 27215 [2022-01-10 12:45:55,636 INFO L226 Difference]: Without dead ends: 27213 [2022-01-10 12:45:55,648 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 12:45:55,648 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 460 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:45:55,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 767 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:45:55,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27213 states. [2022-01-10 12:45:58,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27213 to 14984. [2022-01-10 12:45:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14984 states, 14983 states have (on average 1.4762731095241273) internal successors, (22119), 14983 states have internal predecessors, (22119), 0 states have call successors, (0), 0 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 12:45:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14984 states to 14984 states and 22119 transitions. [2022-01-10 12:45:58,084 INFO L78 Accepts]: Start accepts. Automaton has 14984 states and 22119 transitions. Word has length 70 [2022-01-10 12:45:58,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:45:58,084 INFO L470 AbstractCegarLoop]: Abstraction has 14984 states and 22119 transitions. [2022-01-10 12:45:58,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 12:45:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14984 states and 22119 transitions. [2022-01-10 12:45:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:45:58,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:45:58,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:45:58,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:45:58,086 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:45:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:45:58,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1222183820, now seen corresponding path program 1 times [2022-01-10 12:45:58,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:45:58,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571332157] [2022-01-10 12:45:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:45:58,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:45:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:45:58,229 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 12:45:58,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:45:58,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571332157] [2022-01-10 12:45:58,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571332157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:45:58,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:45:58,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:45:58,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5481405] [2022-01-10 12:45:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:45:58,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:45:58,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:45:58,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:45:58,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:45:58,231 INFO L87 Difference]: Start difference. First operand 14984 states and 22119 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:46:00,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:46:05,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:46:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:46:05,639 INFO L93 Difference]: Finished difference Result 36926 states and 54523 transitions. [2022-01-10 12:46:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:46:05,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:46:05,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:46:05,823 INFO L225 Difference]: With dead ends: 36926 [2022-01-10 12:46:05,823 INFO L226 Difference]: Without dead ends: 21980 [2022-01-10 12:46:05,841 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 12:46:05,842 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 83 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:46:05,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 322 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-01-10 12:46:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2022-01-10 12:46:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21978. [2022-01-10 12:46:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21978 states, 21977 states have (on average 1.4688538017017791) internal successors, (32281), 21977 states have internal predecessors, (32281), 0 states have call successors, (0), 0 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 12:46:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21978 states to 21978 states and 32281 transitions. [2022-01-10 12:46:09,425 INFO L78 Accepts]: Start accepts. Automaton has 21978 states and 32281 transitions. Word has length 71 [2022-01-10 12:46:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:46:09,426 INFO L470 AbstractCegarLoop]: Abstraction has 21978 states and 32281 transitions. [2022-01-10 12:46:09,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:46:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 21978 states and 32281 transitions. [2022-01-10 12:46:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:46:09,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:46:09,437 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:46:09,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:46:09,437 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:46:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:46:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -747977238, now seen corresponding path program 1 times [2022-01-10 12:46:09,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:46:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255628776] [2022-01-10 12:46:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:09,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:46:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:46:09,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:46:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255628776] [2022-01-10 12:46:09,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255628776] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:46:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567398910] [2022-01-10 12:46:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:46:09,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:46:09,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:46:09,764 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 12:46:09,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:46:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:46:10,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 12:46:10,538 INFO L286 TraceCheckSpWp]: Computing forward predicates...