/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:29:19,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:29:19,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:29:19,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:29:19,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:29:19,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:29:19,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:29:19,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:29:19,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:29:19,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:29:19,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:29:19,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:29:19,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:29:19,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:29:19,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:29:19,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:29:19,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:29:19,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:29:19,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:29:19,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:29:19,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:29:19,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:29:19,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:29:19,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:29:19,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:29:19,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:29:19,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:29:19,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:29:19,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:29:19,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:29:19,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:29:19,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:29:19,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:29:19,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:29:19,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:29:19,533 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:29:19,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:29:19,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:29:19,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:29:19,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:29:19,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:29:19,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:19,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:29:19,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:29:19,536 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:29:19,536 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:29:19,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:29:19,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:29:19,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:29:19,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:29:19,720 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:29:19,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-01-11 00:29:19,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85ad3e92/43bb39973ffa4c6e885306cee65241c0/FLAGc02e5a456 [2022-01-11 00:29:20,144 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:29:20,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-01-11 00:29:20,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85ad3e92/43bb39973ffa4c6e885306cee65241c0/FLAGc02e5a456 [2022-01-11 00:29:20,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85ad3e92/43bb39973ffa4c6e885306cee65241c0 [2022-01-11 00:29:20,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:29:20,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:29:20,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:20,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:29:20,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:29:20,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61334888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20, skipping insertion in model container [2022-01-11 00:29:20,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:29:20,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:29:20,433 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2022-01-11 00:29:20,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:20,443 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:29:20,499 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2022-01-11 00:29:20,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:20,522 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:29:20,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20 WrapperNode [2022-01-11 00:29:20,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:20,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:20,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:29:20,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:29:20,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,567 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 462 [2022-01-11 00:29:20,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:20,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:29:20,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:29:20,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:29:20,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:29:20,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:29:20,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:29:20,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:29:20,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:20,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:29:20,648 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) [2022-01-11 00:29:20,649 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 [2022-01-11 00:29:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:29:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:29:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:29:20,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:29:20,782 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:29:20,783 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:29:21,135 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:29:21,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:29:21,141 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:29:21,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21 BoogieIcfgContainer [2022-01-11 00:29:21,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:29:21,143 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:29:21,143 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:29:21,144 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:29:21,146 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:21 BasicIcfg [2022-01-11 00:29:21,453 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:29:21,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:29:21,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:29:21,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:29:21,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:29:20" (1/4) ... [2022-01-11 00:29:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b68e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:21, skipping insertion in model container [2022-01-11 00:29:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (2/4) ... [2022-01-11 00:29:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b68e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:21, skipping insertion in model container [2022-01-11 00:29:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21" (3/4) ... [2022-01-11 00:29:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b68e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:29:21, skipping insertion in model container [2022-01-11 00:29:21,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:21" (4/4) ... [2022-01-11 00:29:21,461 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 00:29:21,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:29:21,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:29:21,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:29:21,515 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 [2022-01-11 00:29:21,515 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:29:21,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:21,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:21,537 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] [2022-01-11 00:29:21,538 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1398747681, now seen corresponding path program 1 times [2022-01-11 00:29:21,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:21,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663444935] [2022-01-11 00:29:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:21,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:21,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663444935] [2022-01-11 00:29:21,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663444935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:21,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:21,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:29:21,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799253483] [2022-01-11 00:29:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:21,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:29:21,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:29:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:29:21,850 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:21,872 INFO L93 Difference]: Finished difference Result 235 states and 403 transitions. [2022-01-11 00:29:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:29:21,875 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 00:29:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:21,882 INFO L225 Difference]: With dead ends: 235 [2022-01-11 00:29:21,883 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 00:29:21,885 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 [2022-01-11 00:29:21,887 INFO L933 BasicCegarLoop]: 250 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, 250 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 [2022-01-11 00:29:21,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 00:29:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-01-11 00:29:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 144 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 250 transitions. [2022-01-11 00:29:21,917 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 250 transitions. Word has length 37 [2022-01-11 00:29:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:21,917 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 250 transitions. [2022-01-11 00:29:21,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 250 transitions. [2022-01-11 00:29:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:21,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:21,919 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] [2022-01-11 00:29:21,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:29:21,919 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash 989923456, now seen corresponding path program 1 times [2022-01-11 00:29:21,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844849784] [2022-01-11 00:29:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:21,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844849784] [2022-01-11 00:29:22,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844849784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:22,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348985806] [2022-01-11 00:29:22,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:22,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:22,083 INFO L87 Difference]: Start difference. First operand 145 states and 250 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,183 INFO L93 Difference]: Finished difference Result 234 states and 396 transitions. [2022-01-11 00:29:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:22,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 00:29:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,185 INFO L225 Difference]: With dead ends: 234 [2022-01-11 00:29:22,185 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 00:29:22,185 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 [2022-01-11 00:29:22,186 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 00:29:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-01-11 00:29:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2022-01-11 00:29:22,195 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 37 [2022-01-11 00:29:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,195 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2022-01-11 00:29:22,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2022-01-11 00:29:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:29:22,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,197 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] [2022-01-11 00:29:22,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:29:22,197 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1440046453, now seen corresponding path program 1 times [2022-01-11 00:29:22,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872086192] [2022-01-11 00:29:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872086192] [2022-01-11 00:29:22,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872086192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:22,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647835418] [2022-01-11 00:29:22,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:22,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:22,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:22,370 INFO L87 Difference]: Start difference. First operand 145 states and 220 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) [2022-01-11 00:29:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,424 INFO L93 Difference]: Finished difference Result 305 states and 486 transitions. [2022-01-11 00:29:22,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:22,424 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 [2022-01-11 00:29:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,426 INFO L225 Difference]: With dead ends: 305 [2022-01-11 00:29:22,426 INFO L226 Difference]: Without dead ends: 220 [2022-01-11 00:29:22,426 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 [2022-01-11 00:29:22,427 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 115 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 388 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-11 00:29:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2022-01-11 00:29:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5555555555555556) internal successors, (336), 216 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 336 transitions. [2022-01-11 00:29:22,452 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 336 transitions. Word has length 66 [2022-01-11 00:29:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,453 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 336 transitions. [2022-01-11 00:29:22,453 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) [2022-01-11 00:29:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 336 transitions. [2022-01-11 00:29:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:29:22,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,455 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] [2022-01-11 00:29:22,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:29:22,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash -675771091, now seen corresponding path program 1 times [2022-01-11 00:29:22,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90857970] [2022-01-11 00:29:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90857970] [2022-01-11 00:29:22,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90857970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:22,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741814240] [2022-01-11 00:29:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:22,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:22,597 INFO L87 Difference]: Start difference. First operand 217 states and 336 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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) [2022-01-11 00:29:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,643 INFO L93 Difference]: Finished difference Result 612 states and 941 transitions. [2022-01-11 00:29:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:22,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 [2022-01-11 00:29:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,647 INFO L225 Difference]: With dead ends: 612 [2022-01-11 00:29:22,647 INFO L226 Difference]: Without dead ends: 420 [2022-01-11 00:29:22,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:22,657 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 569 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 419 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-11 00:29:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2022-01-11 00:29:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.539568345323741) internal successors, (642), 417 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 642 transitions. [2022-01-11 00:29:22,701 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 642 transitions. Word has length 68 [2022-01-11 00:29:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,701 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 642 transitions. [2022-01-11 00:29:22,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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) [2022-01-11 00:29:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 642 transitions. [2022-01-11 00:29:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:22,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,704 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] [2022-01-11 00:29:22,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:29:22,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash -78252645, now seen corresponding path program 1 times [2022-01-11 00:29:22,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139870864] [2022-01-11 00:29:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139870864] [2022-01-11 00:29:22,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139870864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:22,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942430082] [2022-01-11 00:29:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:22,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:22,761 INFO L87 Difference]: Start difference. First operand 418 states and 642 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-01-11 00:29:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,781 INFO L93 Difference]: Finished difference Result 874 states and 1394 transitions. [2022-01-11 00:29:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:22,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2022-01-11 00:29:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,783 INFO L225 Difference]: With dead ends: 874 [2022-01-11 00:29:22,783 INFO L226 Difference]: Without dead ends: 570 [2022-01-11 00:29:22,784 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 [2022-01-11 00:29:22,784 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 130 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 429 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-11 00:29:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 554. [2022-01-11 00:29:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.566003616636528) internal successors, (866), 553 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 866 transitions. [2022-01-11 00:29:22,799 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 866 transitions. Word has length 69 [2022-01-11 00:29:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,799 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 866 transitions. [2022-01-11 00:29:22,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-01-11 00:29:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 866 transitions. [2022-01-11 00:29:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:22,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,801 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] [2022-01-11 00:29:22,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:29:22,801 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1080232415, now seen corresponding path program 1 times [2022-01-11 00:29:22,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128264929] [2022-01-11 00:29:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128264929] [2022-01-11 00:29:22,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128264929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:22,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508339755] [2022-01-11 00:29:22,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:22,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:22,838 INFO L87 Difference]: Start difference. First operand 554 states and 866 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-01-11 00:29:22,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,859 INFO L93 Difference]: Finished difference Result 1624 states and 2534 transitions. [2022-01-11 00:29:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:22,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2022-01-11 00:29:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,862 INFO L225 Difference]: With dead ends: 1624 [2022-01-11 00:29:22,863 INFO L226 Difference]: Without dead ends: 1098 [2022-01-11 00:29:22,863 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 [2022-01-11 00:29:22,864 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 209 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 637 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-11 00:29:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 556. [2022-01-11 00:29:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 1.563963963963964) internal successors, (868), 555 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 868 transitions. [2022-01-11 00:29:22,881 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 868 transitions. Word has length 69 [2022-01-11 00:29:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,881 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 868 transitions. [2022-01-11 00:29:22,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-01-11 00:29:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 868 transitions. [2022-01-11 00:29:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:22,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,882 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] [2022-01-11 00:29:22,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:29:22,882 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1947452488, now seen corresponding path program 1 times [2022-01-11 00:29:22,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707257590] [2022-01-11 00:29:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707257590] [2022-01-11 00:29:22,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707257590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:22,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367274134] [2022-01-11 00:29:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:22,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:22,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:22,998 INFO L87 Difference]: Start difference. First operand 556 states and 868 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) [2022-01-11 00:29:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,042 INFO L93 Difference]: Finished difference Result 1557 states and 2422 transitions. [2022-01-11 00:29:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:23,043 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 [2022-01-11 00:29:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,046 INFO L225 Difference]: With dead ends: 1557 [2022-01-11 00:29:23,046 INFO L226 Difference]: Without dead ends: 1013 [2022-01-11 00:29:23,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:23,047 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 681 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 499 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-11 00:29:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1011. [2022-01-11 00:29:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.5405940594059406) internal successors, (1556), 1010 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1556 transitions. [2022-01-11 00:29:23,075 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1556 transitions. Word has length 70 [2022-01-11 00:29:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,076 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 1556 transitions. [2022-01-11 00:29:23,076 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) [2022-01-11 00:29:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1556 transitions. [2022-01-11 00:29:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:23,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,077 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] [2022-01-11 00:29:23,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:29:23,077 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1781239468, now seen corresponding path program 1 times [2022-01-11 00:29:23,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910588425] [2022-01-11 00:29:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910588425] [2022-01-11 00:29:23,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910588425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:23,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192709714] [2022-01-11 00:29:23,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:23,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:23,136 INFO L87 Difference]: Start difference. First operand 1011 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2022-01-11 00:29:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,164 INFO L93 Difference]: Finished difference Result 1813 states and 2790 transitions. [2022-01-11 00:29:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:23,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 [2022-01-11 00:29:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,167 INFO L225 Difference]: With dead ends: 1813 [2022-01-11 00:29:23,167 INFO L226 Difference]: Without dead ends: 818 [2022-01-11 00:29:23,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:23,169 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 69 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 695 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-11 00:29:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2022-01-11 00:29:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.539779681762546) internal successors, (1258), 817 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1258 transitions. [2022-01-11 00:29:23,194 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1258 transitions. Word has length 70 [2022-01-11 00:29:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,198 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1258 transitions. [2022-01-11 00:29:23,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2022-01-11 00:29:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1258 transitions. [2022-01-11 00:29:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:29:23,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,202 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] [2022-01-11 00:29:23,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:29:23,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1129936617, now seen corresponding path program 1 times [2022-01-11 00:29:23,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375923277] [2022-01-11 00:29:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375923277] [2022-01-11 00:29:23,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375923277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:23,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933997380] [2022-01-11 00:29:23,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:23,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:23,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:23,266 INFO L87 Difference]: Start difference. First operand 818 states and 1258 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) [2022-01-11 00:29:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,293 INFO L93 Difference]: Finished difference Result 1462 states and 2320 transitions. [2022-01-11 00:29:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:23,294 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 [2022-01-11 00:29:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,297 INFO L225 Difference]: With dead ends: 1462 [2022-01-11 00:29:23,297 INFO L226 Difference]: Without dead ends: 1013 [2022-01-11 00:29:23,297 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 [2022-01-11 00:29:23,299 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 122 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 500 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 [2022-01-11 00:29:23,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 500 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-11 00:29:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1011. [2022-01-11 00:29:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.5584158415841585) internal successors, (1574), 1010 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1574 transitions. [2022-01-11 00:29:23,327 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1574 transitions. Word has length 71 [2022-01-11 00:29:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,328 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 1574 transitions. [2022-01-11 00:29:23,328 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) [2022-01-11 00:29:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1574 transitions. [2022-01-11 00:29:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 00:29:23,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:23,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:29:23,329 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1577004108, now seen corresponding path program 1 times [2022-01-11 00:29:23,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685167232] [2022-01-11 00:29:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685167232] [2022-01-11 00:29:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685167232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:23,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749658381] [2022-01-11 00:29:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:23,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:23,380 INFO L87 Difference]: Start difference. First operand 1011 states and 1574 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,422 INFO L93 Difference]: Finished difference Result 2000 states and 3105 transitions. [2022-01-11 00:29:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-11 00:29:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,426 INFO L225 Difference]: With dead ends: 2000 [2022-01-11 00:29:23,426 INFO L226 Difference]: Without dead ends: 1337 [2022-01-11 00:29:23,427 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 [2022-01-11 00:29:23,429 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 206 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 439 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-01-11 00:29:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1011. [2022-01-11 00:29:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.5574257425742575) internal successors, (1573), 1010 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1573 transitions. [2022-01-11 00:29:23,466 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1573 transitions. Word has length 72 [2022-01-11 00:29:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,466 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 1573 transitions. [2022-01-11 00:29:23,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1573 transitions. [2022-01-11 00:29:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:29:23,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:23,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:29:23,467 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -131082838, now seen corresponding path program 1 times [2022-01-11 00:29:23,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219768766] [2022-01-11 00:29:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219768766] [2022-01-11 00:29:23,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219768766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:23,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946206207] [2022-01-11 00:29:23,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:23,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:23,590 INFO L87 Difference]: Start difference. First operand 1011 states and 1573 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,653 INFO L93 Difference]: Finished difference Result 2601 states and 4157 transitions. [2022-01-11 00:29:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-11 00:29:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,660 INFO L225 Difference]: With dead ends: 2601 [2022-01-11 00:29:23,660 INFO L226 Difference]: Without dead ends: 1760 [2022-01-11 00:29:23,663 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 [2022-01-11 00:29:23,664 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 396 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2022-01-11 00:29:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1746. [2022-01-11 00:29:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1745 states have (on average 1.577077363896848) internal successors, (2752), 1745 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2752 transitions. [2022-01-11 00:29:23,728 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2752 transitions. Word has length 73 [2022-01-11 00:29:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,728 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 2752 transitions. [2022-01-11 00:29:23,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2752 transitions. [2022-01-11 00:29:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 00:29:23,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:23,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:29:23,729 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash 707636287, now seen corresponding path program 1 times [2022-01-11 00:29:23,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527518548] [2022-01-11 00:29:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527518548] [2022-01-11 00:29:23,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527518548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:23,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923219806] [2022-01-11 00:29:23,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:23,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:23,845 INFO L87 Difference]: Start difference. First operand 1746 states and 2752 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,987 INFO L93 Difference]: Finished difference Result 5087 states and 8010 transitions. [2022-01-11 00:29:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:23,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 00:29:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,997 INFO L225 Difference]: With dead ends: 5087 [2022-01-11 00:29:23,997 INFO L226 Difference]: Without dead ends: 3388 [2022-01-11 00:29:24,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:24,001 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 516 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:24,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 424 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2022-01-11 00:29:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3386. [2022-01-11 00:29:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.5654357459379615) internal successors, (5299), 3385 states have internal predecessors, (5299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 5299 transitions. [2022-01-11 00:29:24,128 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 5299 transitions. Word has length 75 [2022-01-11 00:29:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:24,129 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 5299 transitions. [2022-01-11 00:29:24,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 5299 transitions. [2022-01-11 00:29:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:24,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:24,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:24,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:29:24,131 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:24,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash 421067398, now seen corresponding path program 1 times [2022-01-11 00:29:24,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:24,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264749810] [2022-01-11 00:29:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:24,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:24,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:24,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264749810] [2022-01-11 00:29:24,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264749810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:24,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:24,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:24,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733813118] [2022-01-11 00:29:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:24,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:24,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:24,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:24,194 INFO L87 Difference]: Start difference. First operand 3386 states and 5299 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:24,325 INFO L93 Difference]: Finished difference Result 7955 states and 12656 transitions. [2022-01-11 00:29:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:24,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:29:24,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:24,339 INFO L225 Difference]: With dead ends: 7955 [2022-01-11 00:29:24,340 INFO L226 Difference]: Without dead ends: 4883 [2022-01-11 00:29:24,343 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 [2022-01-11 00:29:24,344 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 121 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:24,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 416 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2022-01-11 00:29:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 4721. [2022-01-11 00:29:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 4720 states have (on average 1.5669491525423729) internal successors, (7396), 4720 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 7396 transitions. [2022-01-11 00:29:24,500 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 7396 transitions. Word has length 76 [2022-01-11 00:29:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:24,500 INFO L470 AbstractCegarLoop]: Abstraction has 4721 states and 7396 transitions. [2022-01-11 00:29:24,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 7396 transitions. [2022-01-11 00:29:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:24,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:24,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:24,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:29:24,502 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:24,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1928574555, now seen corresponding path program 1 times [2022-01-11 00:29:24,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:24,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336018892] [2022-01-11 00:29:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:24,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:24,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:24,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336018892] [2022-01-11 00:29:24,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336018892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:24,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:24,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:24,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78163041] [2022-01-11 00:29:24,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:24,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:24,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:24,559 INFO L87 Difference]: Start difference. First operand 4721 states and 7396 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:24,834 INFO L93 Difference]: Finished difference Result 12897 states and 20308 transitions. [2022-01-11 00:29:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:29:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:24,866 INFO L225 Difference]: With dead ends: 12897 [2022-01-11 00:29:24,866 INFO L226 Difference]: Without dead ends: 8350 [2022-01-11 00:29:24,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:24,874 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 419 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:24,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 574 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8350 states. [2022-01-11 00:29:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8350 to 8348. [2022-01-11 00:29:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8348 states, 8347 states have (on average 1.554450700850605) internal successors, (12975), 8347 states have internal predecessors, (12975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8348 states to 8348 states and 12975 transitions. [2022-01-11 00:29:25,178 INFO L78 Accepts]: Start accepts. Automaton has 8348 states and 12975 transitions. Word has length 76 [2022-01-11 00:29:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:25,178 INFO L470 AbstractCegarLoop]: Abstraction has 8348 states and 12975 transitions. [2022-01-11 00:29:25,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 8348 states and 12975 transitions. [2022-01-11 00:29:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:25,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:25,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:25,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:29:25,189 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash -974345660, now seen corresponding path program 1 times [2022-01-11 00:29:25,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:25,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634665198] [2022-01-11 00:29:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:25,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:25,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:25,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634665198] [2022-01-11 00:29:25,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634665198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:25,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:25,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:25,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060582755] [2022-01-11 00:29:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:25,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:25,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:25,220 INFO L87 Difference]: Start difference. First operand 8348 states and 12975 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:25,668 INFO L93 Difference]: Finished difference Result 24754 states and 38560 transitions. [2022-01-11 00:29:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:25,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:29:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:25,701 INFO L225 Difference]: With dead ends: 24754 [2022-01-11 00:29:25,701 INFO L226 Difference]: Without dead ends: 16560 [2022-01-11 00:29:25,709 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 [2022-01-11 00:29:25,709 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 195 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:25,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 617 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16560 states. [2022-01-11 00:29:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16560 to 8354. [2022-01-11 00:29:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8354 states, 8353 states have (on average 1.5540524362504489) internal successors, (12981), 8353 states have internal predecessors, (12981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 12981 transitions. [2022-01-11 00:29:26,072 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 12981 transitions. Word has length 76 [2022-01-11 00:29:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:26,072 INFO L470 AbstractCegarLoop]: Abstraction has 8354 states and 12981 transitions. [2022-01-11 00:29:26,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 12981 transitions. [2022-01-11 00:29:26,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:26,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:26,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:26,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:29:26,075 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:26,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1013610811, now seen corresponding path program 1 times [2022-01-11 00:29:26,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:26,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188216975] [2022-01-11 00:29:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:26,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:26,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:26,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188216975] [2022-01-11 00:29:26,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188216975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:26,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:26,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:26,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103690451] [2022-01-11 00:29:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:26,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:26,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:26,128 INFO L87 Difference]: Start difference. First operand 8354 states and 12981 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:26,541 INFO L93 Difference]: Finished difference Result 19435 states and 30239 transitions. [2022-01-11 00:29:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:26,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 00:29:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:26,567 INFO L225 Difference]: With dead ends: 19435 [2022-01-11 00:29:26,567 INFO L226 Difference]: Without dead ends: 13982 [2022-01-11 00:29:26,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:26,578 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 400 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:26,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 518 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13982 states. [2022-01-11 00:29:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13982 to 8351. [2022-01-11 00:29:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8351 states, 8350 states have (on average 1.5537724550898204) internal successors, (12974), 8350 states have internal predecessors, (12974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8351 states to 8351 states and 12974 transitions. [2022-01-11 00:29:27,012 INFO L78 Accepts]: Start accepts. Automaton has 8351 states and 12974 transitions. Word has length 77 [2022-01-11 00:29:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:27,012 INFO L470 AbstractCegarLoop]: Abstraction has 8351 states and 12974 transitions. [2022-01-11 00:29:27,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 8351 states and 12974 transitions. [2022-01-11 00:29:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:27,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:27,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:27,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:29:27,014 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1871247135, now seen corresponding path program 1 times [2022-01-11 00:29:27,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:27,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415839247] [2022-01-11 00:29:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:27,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:27,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415839247] [2022-01-11 00:29:27,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415839247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:27,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:27,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:27,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345580182] [2022-01-11 00:29:27,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:27,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:27,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:27,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:27,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:27,065 INFO L87 Difference]: Start difference. First operand 8351 states and 12974 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:27,341 INFO L93 Difference]: Finished difference Result 12555 states and 19528 transitions. [2022-01-11 00:29:27,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:27,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 00:29:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:27,352 INFO L225 Difference]: With dead ends: 12555 [2022-01-11 00:29:27,352 INFO L226 Difference]: Without dead ends: 7097 [2022-01-11 00:29:27,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:27,358 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 47 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:27,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 673 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2022-01-11 00:29:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 7097. [2022-01-11 00:29:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7097 states, 7096 states have (on average 1.5517192784667417) internal successors, (11011), 7096 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7097 states to 7097 states and 11011 transitions. [2022-01-11 00:29:27,588 INFO L78 Accepts]: Start accepts. Automaton has 7097 states and 11011 transitions. Word has length 77 [2022-01-11 00:29:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:27,588 INFO L470 AbstractCegarLoop]: Abstraction has 7097 states and 11011 transitions. [2022-01-11 00:29:27,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7097 states and 11011 transitions. [2022-01-11 00:29:27,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:27,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:27,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:27,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:29:27,590 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:27,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash 745807334, now seen corresponding path program 1 times [2022-01-11 00:29:27,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:27,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898872234] [2022-01-11 00:29:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:27,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:27,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898872234] [2022-01-11 00:29:27,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898872234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:27,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:27,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:27,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307090205] [2022-01-11 00:29:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:27,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:27,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:27,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:27,663 INFO L87 Difference]: Start difference. First operand 7097 states and 11011 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,004 INFO L93 Difference]: Finished difference Result 16814 states and 26085 transitions. [2022-01-11 00:29:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:28,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 00:29:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,024 INFO L225 Difference]: With dead ends: 16814 [2022-01-11 00:29:28,024 INFO L226 Difference]: Without dead ends: 11289 [2022-01-11 00:29:28,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:29:28,032 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 636 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 817 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11289 states. [2022-01-11 00:29:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11289 to 7277. [2022-01-11 00:29:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7277 states, 7276 states have (on average 1.5405442550852118) internal successors, (11209), 7276 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7277 states to 7277 states and 11209 transitions. [2022-01-11 00:29:28,287 INFO L78 Accepts]: Start accepts. Automaton has 7277 states and 11209 transitions. Word has length 77 [2022-01-11 00:29:28,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,287 INFO L470 AbstractCegarLoop]: Abstraction has 7277 states and 11209 transitions. [2022-01-11 00:29:28,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7277 states and 11209 transitions. [2022-01-11 00:29:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:28,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:28,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:29:28,290 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash -111828990, now seen corresponding path program 1 times [2022-01-11 00:29:28,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69210302] [2022-01-11 00:29:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:28,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69210302] [2022-01-11 00:29:28,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69210302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:28,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243130179] [2022-01-11 00:29:28,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:28,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:28,343 INFO L87 Difference]: Start difference. First operand 7277 states and 11209 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,559 INFO L93 Difference]: Finished difference Result 13473 states and 20740 transitions. [2022-01-11 00:29:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:28,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 00:29:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,570 INFO L225 Difference]: With dead ends: 13473 [2022-01-11 00:29:28,570 INFO L226 Difference]: Without dead ends: 6239 [2022-01-11 00:29:28,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:28,577 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 45 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 667 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2022-01-11 00:29:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 6239. [2022-01-11 00:29:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 6238 states have (on average 1.5371914075024047) internal successors, (9589), 6238 states have internal predecessors, (9589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 9589 transitions. [2022-01-11 00:29:28,774 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 9589 transitions. Word has length 77 [2022-01-11 00:29:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,774 INFO L470 AbstractCegarLoop]: Abstraction has 6239 states and 9589 transitions. [2022-01-11 00:29:28,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 9589 transitions. [2022-01-11 00:29:28,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:29:28,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:28,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:29:28,776 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -718264445, now seen corresponding path program 1 times [2022-01-11 00:29:28,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780872769] [2022-01-11 00:29:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:28,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780872769] [2022-01-11 00:29:28,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780872769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:28,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789788040] [2022-01-11 00:29:28,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:28,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:28,825 INFO L87 Difference]: Start difference. First operand 6239 states and 9589 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:29,125 INFO L93 Difference]: Finished difference Result 11878 states and 18490 transitions. [2022-01-11 00:29:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-11 00:29:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:29,143 INFO L225 Difference]: With dead ends: 11878 [2022-01-11 00:29:29,143 INFO L226 Difference]: Without dead ends: 7924 [2022-01-11 00:29:29,149 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 [2022-01-11 00:29:29,150 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 113 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 482 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 [2022-01-11 00:29:29,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 482 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:29,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2022-01-11 00:29:29,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 7922. [2022-01-11 00:29:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7922 states, 7921 states have (on average 1.5412195429869966) internal successors, (12208), 7921 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7922 states to 7922 states and 12208 transitions. [2022-01-11 00:29:29,475 INFO L78 Accepts]: Start accepts. Automaton has 7922 states and 12208 transitions. Word has length 78 [2022-01-11 00:29:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:29,475 INFO L470 AbstractCegarLoop]: Abstraction has 7922 states and 12208 transitions. [2022-01-11 00:29:29,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7922 states and 12208 transitions. [2022-01-11 00:29:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:29:29,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:29,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:29,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:29:29,478 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1917460409, now seen corresponding path program 1 times [2022-01-11 00:29:29,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:29,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477142349] [2022-01-11 00:29:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:29,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:29,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:29,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477142349] [2022-01-11 00:29:29,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477142349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:29,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:29,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:29,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228955123] [2022-01-11 00:29:29,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:29,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:29,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:29,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:29,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:29,516 INFO L87 Difference]: Start difference. First operand 7922 states and 12208 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:29,887 INFO L93 Difference]: Finished difference Result 14794 states and 22800 transitions. [2022-01-11 00:29:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-11 00:29:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:29,909 INFO L225 Difference]: With dead ends: 14794 [2022-01-11 00:29:29,909 INFO L226 Difference]: Without dead ends: 10929 [2022-01-11 00:29:29,917 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 [2022-01-11 00:29:29,918 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 191 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:29,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 518 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:29,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10929 states. [2022-01-11 00:29:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10929 to 7922. [2022-01-11 00:29:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7922 states, 7921 states have (on average 1.5409670496149477) internal successors, (12206), 7921 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7922 states to 7922 states and 12206 transitions. [2022-01-11 00:29:30,243 INFO L78 Accepts]: Start accepts. Automaton has 7922 states and 12206 transitions. Word has length 79 [2022-01-11 00:29:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:30,243 INFO L470 AbstractCegarLoop]: Abstraction has 7922 states and 12206 transitions. [2022-01-11 00:29:30,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7922 states and 12206 transitions. [2022-01-11 00:29:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:29:30,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:30,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:30,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:29:30,245 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1051067373, now seen corresponding path program 1 times [2022-01-11 00:29:30,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:30,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168690389] [2022-01-11 00:29:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:30,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:30,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:30,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168690389] [2022-01-11 00:29:30,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168690389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:30,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:30,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:30,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30765193] [2022-01-11 00:29:30,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:30,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:30,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:30,352 INFO L87 Difference]: Start difference. First operand 7922 states and 12206 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:30,823 INFO L93 Difference]: Finished difference Result 21846 states and 34064 transitions. [2022-01-11 00:29:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:29:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:30,851 INFO L225 Difference]: With dead ends: 21846 [2022-01-11 00:29:30,851 INFO L226 Difference]: Without dead ends: 14404 [2022-01-11 00:29:30,863 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 [2022-01-11 00:29:30,863 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:30,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 386 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14404 states. [2022-01-11 00:29:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14404 to 14274. [2022-01-11 00:29:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14274 states, 14273 states have (on average 1.542352693897569) internal successors, (22014), 14273 states have internal predecessors, (22014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14274 states to 14274 states and 22014 transitions. [2022-01-11 00:29:31,420 INFO L78 Accepts]: Start accepts. Automaton has 14274 states and 22014 transitions. Word has length 80 [2022-01-11 00:29:31,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:31,420 INFO L470 AbstractCegarLoop]: Abstraction has 14274 states and 22014 transitions. [2022-01-11 00:29:31,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:31,420 INFO L276 IsEmpty]: Start isEmpty. Operand 14274 states and 22014 transitions. [2022-01-11 00:29:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:31,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:31,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:31,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:29:31,422 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:31,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:31,422 INFO L85 PathProgramCache]: Analyzing trace with hash 517858466, now seen corresponding path program 1 times [2022-01-11 00:29:31,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:31,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419556405] [2022-01-11 00:29:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:31,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:31,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:31,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419556405] [2022-01-11 00:29:31,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419556405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:31,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:31,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:31,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603301932] [2022-01-11 00:29:31,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:31,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:31,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:31,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:31,484 INFO L87 Difference]: Start difference. First operand 14274 states and 22014 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:32,237 INFO L93 Difference]: Finished difference Result 36399 states and 56270 transitions. [2022-01-11 00:29:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 00:29:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:32,274 INFO L225 Difference]: With dead ends: 36399 [2022-01-11 00:29:32,275 INFO L226 Difference]: Without dead ends: 22605 [2022-01-11 00:29:32,289 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 [2022-01-11 00:29:32,291 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 129 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:32,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 557 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22605 states. [2022-01-11 00:29:33,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22605 to 22603. [2022-01-11 00:29:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22603 states, 22602 states have (on average 1.5253517387841784) internal successors, (34476), 22602 states have internal predecessors, (34476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22603 states to 22603 states and 34476 transitions. [2022-01-11 00:29:33,273 INFO L78 Accepts]: Start accepts. Automaton has 22603 states and 34476 transitions. Word has length 82 [2022-01-11 00:29:33,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:33,273 INFO L470 AbstractCegarLoop]: Abstraction has 22603 states and 34476 transitions. [2022-01-11 00:29:33,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 22603 states and 34476 transitions. [2022-01-11 00:29:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:33,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:33,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:33,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:29:33,276 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:33,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1904463198, now seen corresponding path program 1 times [2022-01-11 00:29:33,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:33,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210470521] [2022-01-11 00:29:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:33,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:33,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:33,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210470521] [2022-01-11 00:29:33,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210470521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:33,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:33,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:33,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792740944] [2022-01-11 00:29:33,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:33,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:33,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:33,342 INFO L87 Difference]: Start difference. First operand 22603 states and 34476 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:34,824 INFO L93 Difference]: Finished difference Result 57603 states and 87970 transitions. [2022-01-11 00:29:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 00:29:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:34,883 INFO L225 Difference]: With dead ends: 57603 [2022-01-11 00:29:34,884 INFO L226 Difference]: Without dead ends: 35633 [2022-01-11 00:29:34,897 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 [2022-01-11 00:29:34,898 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 132 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:34,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 586 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35633 states. [2022-01-11 00:29:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35633 to 35631. [2022-01-11 00:29:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35631 states, 35630 states have (on average 1.506595565534662) internal successors, (53680), 35630 states have internal predecessors, (53680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35631 states to 35631 states and 53680 transitions. [2022-01-11 00:29:36,276 INFO L78 Accepts]: Start accepts. Automaton has 35631 states and 53680 transitions. Word has length 82 [2022-01-11 00:29:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:36,276 INFO L470 AbstractCegarLoop]: Abstraction has 35631 states and 53680 transitions. [2022-01-11 00:29:36,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 35631 states and 53680 transitions. [2022-01-11 00:29:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:36,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:36,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:36,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:29:36,279 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1936861317, now seen corresponding path program 1 times [2022-01-11 00:29:36,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:36,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365248553] [2022-01-11 00:29:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:36,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:36,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:36,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365248553] [2022-01-11 00:29:36,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365248553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:36,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:36,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:36,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551605855] [2022-01-11 00:29:36,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:36,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:36,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:36,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:36,341 INFO L87 Difference]: Start difference. First operand 35631 states and 53680 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:37,773 INFO L93 Difference]: Finished difference Result 64212 states and 96688 transitions. [2022-01-11 00:29:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:37,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:29:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:37,829 INFO L225 Difference]: With dead ends: 64212 [2022-01-11 00:29:37,830 INFO L226 Difference]: Without dead ends: 37714 [2022-01-11 00:29:37,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:37,844 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 487 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:37,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 411 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37714 states. [2022-01-11 00:29:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37714 to 35700. [2022-01-11 00:29:39,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35700 states, 35699 states have (on average 1.5058685117230175) internal successors, (53758), 35699 states have internal predecessors, (53758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35700 states to 35700 states and 53758 transitions. [2022-01-11 00:29:39,491 INFO L78 Accepts]: Start accepts. Automaton has 35700 states and 53758 transitions. Word has length 83 [2022-01-11 00:29:39,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:39,491 INFO L470 AbstractCegarLoop]: Abstraction has 35700 states and 53758 transitions. [2022-01-11 00:29:39,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:39,492 INFO L276 IsEmpty]: Start isEmpty. Operand 35700 states and 53758 transitions. [2022-01-11 00:29:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:39,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:39,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:39,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:29:39,495 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2032820506, now seen corresponding path program 1 times [2022-01-11 00:29:39,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:39,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952409235] [2022-01-11 00:29:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:39,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:39,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:39,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952409235] [2022-01-11 00:29:39,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952409235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:39,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:39,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:39,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623448904] [2022-01-11 00:29:39,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:39,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:39,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:39,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:39,565 INFO L87 Difference]: Start difference. First operand 35700 states and 53758 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:41,510 INFO L93 Difference]: Finished difference Result 80696 states and 122000 transitions. [2022-01-11 00:29:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:29:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:41,603 INFO L225 Difference]: With dead ends: 80696 [2022-01-11 00:29:41,603 INFO L226 Difference]: Without dead ends: 50550 [2022-01-11 00:29:41,635 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 [2022-01-11 00:29:41,635 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 112 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:41,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 410 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50550 states. [2022-01-11 00:29:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50550 to 48436. [2022-01-11 00:29:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48436 states, 48435 states have (on average 1.4954062145142974) internal successors, (72430), 48435 states have internal predecessors, (72430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48436 states to 48436 states and 72430 transitions. [2022-01-11 00:29:43,801 INFO L78 Accepts]: Start accepts. Automaton has 48436 states and 72430 transitions. Word has length 83 [2022-01-11 00:29:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:43,801 INFO L470 AbstractCegarLoop]: Abstraction has 48436 states and 72430 transitions. [2022-01-11 00:29:43,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 48436 states and 72430 transitions. [2022-01-11 00:29:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:29:43,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:43,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:43,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:29:43,805 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1353527827, now seen corresponding path program 1 times [2022-01-11 00:29:43,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:43,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224771621] [2022-01-11 00:29:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:43,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:43,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:43,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224771621] [2022-01-11 00:29:43,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224771621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:43,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:43,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:43,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389488454] [2022-01-11 00:29:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:43,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:43,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:43,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:43,839 INFO L87 Difference]: Start difference. First operand 48436 states and 72430 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:47,590 INFO L93 Difference]: Finished difference Result 144598 states and 216464 transitions. [2022-01-11 00:29:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:47,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 00:29:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:47,758 INFO L225 Difference]: With dead ends: 144598 [2022-01-11 00:29:47,759 INFO L226 Difference]: Without dead ends: 96653 [2022-01-11 00:29:47,795 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 [2022-01-11 00:29:47,796 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 181 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:47,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 593 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96653 states. [2022-01-11 00:29:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96653 to 48452. [2022-01-11 00:29:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48452 states, 48451 states have (on average 1.4952426162514705) internal successors, (72446), 48451 states have internal predecessors, (72446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48452 states to 48452 states and 72446 transitions. [2022-01-11 00:29:50,417 INFO L78 Accepts]: Start accepts. Automaton has 48452 states and 72446 transitions. Word has length 84 [2022-01-11 00:29:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:50,418 INFO L470 AbstractCegarLoop]: Abstraction has 48452 states and 72446 transitions. [2022-01-11 00:29:50,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 48452 states and 72446 transitions. [2022-01-11 00:29:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:29:50,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:50,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:50,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:29:50,420 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1804302966, now seen corresponding path program 1 times [2022-01-11 00:29:50,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:50,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510585761] [2022-01-11 00:29:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:50,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:50,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:50,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510585761] [2022-01-11 00:29:50,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510585761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:50,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:50,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:50,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401560256] [2022-01-11 00:29:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:50,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:50,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:50,497 INFO L87 Difference]: Start difference. First operand 48452 states and 72446 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:52,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:52,949 INFO L93 Difference]: Finished difference Result 99119 states and 148102 transitions. [2022-01-11 00:29:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:52,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-11 00:29:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:53,044 INFO L225 Difference]: With dead ends: 99119 [2022-01-11 00:29:53,044 INFO L226 Difference]: Without dead ends: 50775 [2022-01-11 00:29:53,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:53,077 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 631 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:53,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 461 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50775 states. [2022-01-11 00:29:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50775 to 48662. [2022-01-11 00:29:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48662 states, 48661 states have (on average 1.4928382071885082) internal successors, (72643), 48661 states have internal predecessors, (72643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48662 states to 48662 states and 72643 transitions. [2022-01-11 00:29:55,554 INFO L78 Accepts]: Start accepts. Automaton has 48662 states and 72643 transitions. Word has length 85 [2022-01-11 00:29:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:55,554 INFO L470 AbstractCegarLoop]: Abstraction has 48662 states and 72643 transitions. [2022-01-11 00:29:55,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48662 states and 72643 transitions. [2022-01-11 00:29:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:29:55,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:55,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:55,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:29:55,557 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash 844077478, now seen corresponding path program 1 times [2022-01-11 00:29:55,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514497089] [2022-01-11 00:29:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:55,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:55,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:55,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514497089] [2022-01-11 00:29:55,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514497089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:55,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:55,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:55,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004533403] [2022-01-11 00:29:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:55,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:55,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:55,607 INFO L87 Difference]: Start difference. First operand 48662 states and 72643 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:57,593 INFO L93 Difference]: Finished difference Result 84989 states and 126867 transitions. [2022-01-11 00:29:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-11 00:29:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:57,661 INFO L225 Difference]: With dead ends: 84989 [2022-01-11 00:29:57,661 INFO L226 Difference]: Without dead ends: 43845 [2022-01-11 00:29:57,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:57,682 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 23 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:57,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 643 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43845 states. [2022-01-11 00:29:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43845 to 43845. [2022-01-11 00:29:59,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43845 states, 43844 states have (on average 1.4907627041328346) internal successors, (65361), 43844 states have internal predecessors, (65361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:59,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43845 states to 43845 states and 65361 transitions. [2022-01-11 00:29:59,853 INFO L78 Accepts]: Start accepts. Automaton has 43845 states and 65361 transitions. Word has length 85 [2022-01-11 00:29:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:59,853 INFO L470 AbstractCegarLoop]: Abstraction has 43845 states and 65361 transitions. [2022-01-11 00:29:59,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 43845 states and 65361 transitions. [2022-01-11 00:29:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 00:29:59,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:59,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:59,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 00:29:59,856 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1154536608, now seen corresponding path program 1 times [2022-01-11 00:29:59,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:59,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620882251] [2022-01-11 00:29:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:59,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:59,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:59,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620882251] [2022-01-11 00:29:59,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620882251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:59,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:59,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:59,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254927483] [2022-01-11 00:29:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:59,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:59,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:59,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:59,912 INFO L87 Difference]: Start difference. First operand 43845 states and 65361 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:02,564 INFO L93 Difference]: Finished difference Result 84245 states and 126693 transitions. [2022-01-11 00:30:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:02,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-11 00:30:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:02,653 INFO L225 Difference]: With dead ends: 84245 [2022-01-11 00:30:02,653 INFO L226 Difference]: Without dead ends: 55201 [2022-01-11 00:30:02,676 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 [2022-01-11 00:30:02,677 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 104 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 460 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 [2022-01-11 00:30:02,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 460 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55201 states. [2022-01-11 00:30:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55201 to 55199. [2022-01-11 00:30:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55199 states, 55198 states have (on average 1.492209862676184) internal successors, (82367), 55198 states have internal predecessors, (82367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55199 states to 55199 states and 82367 transitions. [2022-01-11 00:30:05,539 INFO L78 Accepts]: Start accepts. Automaton has 55199 states and 82367 transitions. Word has length 86 [2022-01-11 00:30:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:05,539 INFO L470 AbstractCegarLoop]: Abstraction has 55199 states and 82367 transitions. [2022-01-11 00:30:05,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 55199 states and 82367 transitions. [2022-01-11 00:30:05,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 00:30:05,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:05,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:30:05,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 00:30:05,542 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:05,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1736496913, now seen corresponding path program 1 times [2022-01-11 00:30:05,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:05,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733830485] [2022-01-11 00:30:05,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:05,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:05,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:05,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733830485] [2022-01-11 00:30:05,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733830485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:05,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:05,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:05,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058558219] [2022-01-11 00:30:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:05,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:05,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:05,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:05,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:05,574 INFO L87 Difference]: Start difference. First operand 55199 states and 82367 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:08,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:08,918 INFO L93 Difference]: Finished difference Result 101352 states and 151110 transitions. [2022-01-11 00:30:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-11 00:30:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:09,048 INFO L225 Difference]: With dead ends: 101352 [2022-01-11 00:30:09,048 INFO L226 Difference]: Without dead ends: 70820 [2022-01-11 00:30:09,080 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 [2022-01-11 00:30:09,081 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 178 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:09,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 417 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:09,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70820 states. [2022-01-11 00:30:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70820 to 55199. [2022-01-11 00:30:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55199 states, 55198 states have (on average 1.4921192796840466) internal successors, (82362), 55198 states have internal predecessors, (82362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55199 states to 55199 states and 82362 transitions. [2022-01-11 00:30:12,186 INFO L78 Accepts]: Start accepts. Automaton has 55199 states and 82362 transitions. Word has length 86 [2022-01-11 00:30:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:12,186 INFO L470 AbstractCegarLoop]: Abstraction has 55199 states and 82362 transitions. [2022-01-11 00:30:12,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 55199 states and 82362 transitions. [2022-01-11 00:30:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 00:30:12,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:12,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:30:12,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 00:30:12,188 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:12,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1877365003, now seen corresponding path program 1 times [2022-01-11 00:30:12,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:12,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803735088] [2022-01-11 00:30:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:12,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:12,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:12,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803735088] [2022-01-11 00:30:12,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803735088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:12,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:12,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:30:12,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838477551] [2022-01-11 00:30:12,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:12,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:30:12,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:30:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:12,344 INFO L87 Difference]: Start difference. First operand 55199 states and 82362 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)