/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/locks/test_locks_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 18:45:36,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 18:45:36,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 18:45:36,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 18:45:36,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 18:45:36,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 18:45:36,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 18:45:36,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 18:45:36,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 18:45:36,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 18:45:36,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 18:45:36,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 18:45:36,481 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 18:45:36,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 18:45:36,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 18:45:36,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 18:45:36,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 18:45:36,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 18:45:36,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 18:45:36,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 18:45:36,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 18:45:36,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 18:45:36,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 18:45:36,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 18:45:36,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 18:45:36,516 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 18:45:36,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 18:45:36,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 18:45:36,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 18:45:36,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 18:45:36,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 18:45:36,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 18:45:36,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:45:36,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 18:45:36,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 18:45:36,519 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 18:45:36,519 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 18:45:36,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 18:45:36,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 18:45:36,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 18:45:36,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 18:45:36,769 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 18:45:36,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-2.c [2022-03-17 18:45:36,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79b2b9a1/d1ac5c5f5721492cb37ece91e82dcb99/FLAG89f52660c [2022-03-17 18:45:37,202 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 18:45:37,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c [2022-03-17 18:45:37,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79b2b9a1/d1ac5c5f5721492cb37ece91e82dcb99/FLAG89f52660c [2022-03-17 18:45:37,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79b2b9a1/d1ac5c5f5721492cb37ece91e82dcb99 [2022-03-17 18:45:37,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 18:45:37,228 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 18:45:37,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 18:45:37,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 18:45:37,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 18:45:37,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf358e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37, skipping insertion in model container [2022-03-17 18:45:37,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 18:45:37,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 18:45:37,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2022-03-17 18:45:37,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:45:37,458 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 18:45:37,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2022-03-17 18:45:37,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:45:37,497 INFO L208 MainTranslator]: Completed translation [2022-03-17 18:45:37,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37 WrapperNode [2022-03-17 18:45:37,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 18:45:37,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 18:45:37,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 18:45:37,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 18:45:37,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 18:45:37,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 18:45:37,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 18:45:37,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 18:45:37,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:45:37,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:45:37,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 18:45:37,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 18:45:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 18:45:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 18:45:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 18:45:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 18:45:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 18:45:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 18:45:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 18:45:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 18:45:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 18:45:37,676 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 18:45:37,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 18:45:37,943 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 18:45:37,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 18:45:37,948 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 18:45:37,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:45:37 BoogieIcfgContainer [2022-03-17 18:45:37,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 18:45:37,950 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 18:45:37,950 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 18:45:37,952 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 18:45:37,955 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:45:37" (1/1) ... [2022-03-17 18:45:37,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:45:37 BasicIcfg [2022-03-17 18:45:37,990 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 18:45:37,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 18:45:37,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 18:45:37,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 18:45:37,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:45:37" (1/4) ... [2022-03-17 18:45:37,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c488afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:45:37, skipping insertion in model container [2022-03-17 18:45:37,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:45:37" (2/4) ... [2022-03-17 18:45:37,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c488afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:45:37, skipping insertion in model container [2022-03-17 18:45:37,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:45:37" (3/4) ... [2022-03-17 18:45:37,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c488afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:45:37, skipping insertion in model container [2022-03-17 18:45:37,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:45:37" (4/4) ... [2022-03-17 18:45:37,999 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.cJordan [2022-03-17 18:45:38,003 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 18:45:38,003 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 18:45:38,039 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 18:45:38,046 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-03-17 18:45:38,046 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 18:45:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 55 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 18:45:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-17 18:45:38,065 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:38,065 INFO L500 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] [2022-03-17 18:45:38,066 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash 539653987, now seen corresponding path program 1 times [2022-03-17 18:45:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:38,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93839250] [2022-03-17 18:45:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:38,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:38,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:38,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93839250] [2022-03-17 18:45:38,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93839250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:38,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:38,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875537137] [2022-03-17 18:45:38,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:38,305 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:38,323 INFO L87 Difference]: Start difference. First operand has 60 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 55 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:38,477 INFO L93 Difference]: Finished difference Result 111 states and 198 transitions. [2022-03-17 18:45:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:38,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-03-17 18:45:38,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:38,484 INFO L225 Difference]: With dead ends: 111 [2022-03-17 18:45:38,484 INFO L226 Difference]: Without dead ends: 103 [2022-03-17 18:45:38,485 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:38,487 INFO L912 BasicCegarLoop]: 110 mSDtfsCounter, 259 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:38,488 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 119 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-03-17 18:45:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2022-03-17 18:45:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.8955223880597014) internal successors, (127), 67 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 130 transitions. [2022-03-17 18:45:38,512 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 130 transitions. Word has length 26 [2022-03-17 18:45:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:38,512 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 130 transitions. [2022-03-17 18:45:38,512 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 130 transitions. [2022-03-17 18:45:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-17 18:45:38,513 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:38,513 INFO L500 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] [2022-03-17 18:45:38,514 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 18:45:38,514 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash -457418366, now seen corresponding path program 1 times [2022-03-17 18:45:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:38,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92458400] [2022-03-17 18:45:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:38,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:38,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:38,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92458400] [2022-03-17 18:45:38,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92458400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:38,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:38,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748323991] [2022-03-17 18:45:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:38,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:38,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:38,558 INFO L87 Difference]: Start difference. First operand 71 states and 130 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:38,673 INFO L93 Difference]: Finished difference Result 103 states and 187 transitions. [2022-03-17 18:45:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-03-17 18:45:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:38,675 INFO L225 Difference]: With dead ends: 103 [2022-03-17 18:45:38,675 INFO L226 Difference]: Without dead ends: 103 [2022-03-17 18:45:38,675 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:38,676 INFO L912 BasicCegarLoop]: 128 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:38,676 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 135 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-03-17 18:45:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-03-17 18:45:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.8865979381443299) internal successors, (183), 97 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 186 transitions. [2022-03-17 18:45:38,683 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 186 transitions. Word has length 26 [2022-03-17 18:45:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:38,683 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 186 transitions. [2022-03-17 18:45:38,683 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 186 transitions. [2022-03-17 18:45:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-17 18:45:38,684 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:38,684 INFO L500 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] [2022-03-17 18:45:38,684 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 18:45:38,684 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash -450563475, now seen corresponding path program 1 times [2022-03-17 18:45:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:38,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591259819] [2022-03-17 18:45:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:38,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:38,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591259819] [2022-03-17 18:45:38,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591259819] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:38,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:38,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:38,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013696967] [2022-03-17 18:45:38,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:38,727 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:38,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:38,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:38,727 INFO L87 Difference]: Start difference. First operand 101 states and 186 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:38,824 INFO L93 Difference]: Finished difference Result 106 states and 189 transitions. [2022-03-17 18:45:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-17 18:45:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:38,828 INFO L225 Difference]: With dead ends: 106 [2022-03-17 18:45:38,828 INFO L226 Difference]: Without dead ends: 106 [2022-03-17 18:45:38,828 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:38,829 INFO L912 BasicCegarLoop]: 156 mSDtfsCounter, 196 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:38,830 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-03-17 18:45:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-03-17 18:45:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.85) internal successors, (185), 100 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 188 transitions. [2022-03-17 18:45:38,836 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 188 transitions. Word has length 27 [2022-03-17 18:45:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:38,836 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 188 transitions. [2022-03-17 18:45:38,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 188 transitions. [2022-03-17 18:45:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-17 18:45:38,837 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:38,837 INFO L500 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] [2022-03-17 18:45:38,837 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 18:45:38,838 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:38,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:38,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1295035346, now seen corresponding path program 1 times [2022-03-17 18:45:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:38,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363520553] [2022-03-17 18:45:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:38,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:38,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:38,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363520553] [2022-03-17 18:45:38,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363520553] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:38,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:38,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874557124] [2022-03-17 18:45:38,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:38,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:38,875 INFO L87 Difference]: Start difference. First operand 104 states and 188 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:38,953 INFO L93 Difference]: Finished difference Result 197 states and 358 transitions. [2022-03-17 18:45:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-17 18:45:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:38,955 INFO L225 Difference]: With dead ends: 197 [2022-03-17 18:45:38,955 INFO L226 Difference]: Without dead ends: 197 [2022-03-17 18:45:38,955 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:38,956 INFO L912 BasicCegarLoop]: 102 mSDtfsCounter, 248 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:38,956 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-03-17 18:45:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2022-03-17 18:45:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.8534031413612566) internal successors, (354), 191 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 357 transitions. [2022-03-17 18:45:38,964 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 357 transitions. Word has length 27 [2022-03-17 18:45:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:38,964 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 357 transitions. [2022-03-17 18:45:38,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 357 transitions. [2022-03-17 18:45:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-17 18:45:38,965 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:38,965 INFO L500 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] [2022-03-17 18:45:38,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 18:45:38,966 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -297962993, now seen corresponding path program 1 times [2022-03-17 18:45:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:38,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959880542] [2022-03-17 18:45:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:38,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:38,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959880542] [2022-03-17 18:45:38,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959880542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:38,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:38,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736589434] [2022-03-17 18:45:39,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,001 INFO L87 Difference]: Start difference. First operand 195 states and 357 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,076 INFO L93 Difference]: Finished difference Result 253 states and 464 transitions. [2022-03-17 18:45:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-17 18:45:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,078 INFO L225 Difference]: With dead ends: 253 [2022-03-17 18:45:39,078 INFO L226 Difference]: Without dead ends: 253 [2022-03-17 18:45:39,078 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,079 INFO L912 BasicCegarLoop]: 181 mSDtfsCounter, 161 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,079 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 188 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-17 18:45:39,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 195. [2022-03-17 18:45:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.8429319371727748) internal successors, (352), 191 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 355 transitions. [2022-03-17 18:45:39,086 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 355 transitions. Word has length 27 [2022-03-17 18:45:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:39,086 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 355 transitions. [2022-03-17 18:45:39,086 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 355 transitions. [2022-03-17 18:45:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-17 18:45:39,087 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:39,087 INFO L500 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] [2022-03-17 18:45:39,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 18:45:39,087 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1491357826, now seen corresponding path program 1 times [2022-03-17 18:45:39,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:39,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710780481] [2022-03-17 18:45:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:39,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:39,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:39,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710780481] [2022-03-17 18:45:39,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710780481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:39,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:39,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324207647] [2022-03-17 18:45:39,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,120 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,121 INFO L87 Difference]: Start difference. First operand 195 states and 355 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,198 INFO L93 Difference]: Finished difference Result 369 states and 678 transitions. [2022-03-17 18:45:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-03-17 18:45:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,200 INFO L225 Difference]: With dead ends: 369 [2022-03-17 18:45:39,200 INFO L226 Difference]: Without dead ends: 369 [2022-03-17 18:45:39,201 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,201 INFO L912 BasicCegarLoop]: 99 mSDtfsCounter, 239 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,202 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 106 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-17 18:45:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 263. [2022-03-17 18:45:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 1.83011583011583) internal successors, (474), 259 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 477 transitions. [2022-03-17 18:45:39,209 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 477 transitions. Word has length 28 [2022-03-17 18:45:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:39,210 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 477 transitions. [2022-03-17 18:45:39,210 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 477 transitions. [2022-03-17 18:45:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-17 18:45:39,211 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:39,211 INFO L500 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] [2022-03-17 18:45:39,211 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 18:45:39,211 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1806537117, now seen corresponding path program 1 times [2022-03-17 18:45:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:39,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793912995] [2022-03-17 18:45:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:39,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:39,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793912995] [2022-03-17 18:45:39,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793912995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:39,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:39,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020196452] [2022-03-17 18:45:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,253 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,254 INFO L87 Difference]: Start difference. First operand 263 states and 477 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,354 INFO L93 Difference]: Finished difference Result 377 states and 680 transitions. [2022-03-17 18:45:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-03-17 18:45:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,355 INFO L225 Difference]: With dead ends: 377 [2022-03-17 18:45:39,356 INFO L226 Difference]: Without dead ends: 377 [2022-03-17 18:45:39,356 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,356 INFO L912 BasicCegarLoop]: 132 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,357 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 139 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-17 18:45:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2022-03-17 18:45:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 371 states have (on average 1.8221024258760108) internal successors, (676), 371 states have internal predecessors, (676), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 679 transitions. [2022-03-17 18:45:39,365 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 679 transitions. Word has length 28 [2022-03-17 18:45:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:39,365 INFO L478 AbstractCegarLoop]: Abstraction has 375 states and 679 transitions. [2022-03-17 18:45:39,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 679 transitions. [2022-03-17 18:45:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-17 18:45:39,366 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:39,366 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:45:39,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 18:45:39,367 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:39,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1012580010, now seen corresponding path program 1 times [2022-03-17 18:45:39,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:39,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375684107] [2022-03-17 18:45:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:39,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:39,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375684107] [2022-03-17 18:45:39,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375684107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:39,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:39,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091344145] [2022-03-17 18:45:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,396 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,397 INFO L87 Difference]: Start difference. First operand 375 states and 679 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,479 INFO L93 Difference]: Finished difference Result 383 states and 684 transitions. [2022-03-17 18:45:39,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-03-17 18:45:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,481 INFO L225 Difference]: With dead ends: 383 [2022-03-17 18:45:39,481 INFO L226 Difference]: Without dead ends: 383 [2022-03-17 18:45:39,481 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,482 INFO L912 BasicCegarLoop]: 150 mSDtfsCounter, 194 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,482 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 157 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-17 18:45:39,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381. [2022-03-17 18:45:39,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 377 states have (on average 1.8037135278514589) internal successors, (680), 377 states have internal predecessors, (680), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 683 transitions. [2022-03-17 18:45:39,488 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 683 transitions. Word has length 29 [2022-03-17 18:45:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:39,488 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 683 transitions. [2022-03-17 18:45:39,488 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 683 transitions. [2022-03-17 18:45:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-17 18:45:39,489 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:39,489 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:45:39,489 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 18:45:39,489 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 168108139, now seen corresponding path program 1 times [2022-03-17 18:45:39,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:39,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59365801] [2022-03-17 18:45:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:39,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59365801] [2022-03-17 18:45:39,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59365801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:39,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:39,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480588580] [2022-03-17 18:45:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,526 INFO L87 Difference]: Start difference. First operand 381 states and 683 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,600 INFO L93 Difference]: Finished difference Result 715 states and 1292 transitions. [2022-03-17 18:45:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-03-17 18:45:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,603 INFO L225 Difference]: With dead ends: 715 [2022-03-17 18:45:39,603 INFO L226 Difference]: Without dead ends: 715 [2022-03-17 18:45:39,603 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,603 INFO L912 BasicCegarLoop]: 98 mSDtfsCounter, 232 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,603 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 105 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-03-17 18:45:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 521. [2022-03-17 18:45:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.7794970986460348) internal successors, (920), 517 states have internal predecessors, (920), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 923 transitions. [2022-03-17 18:45:39,611 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 923 transitions. Word has length 29 [2022-03-17 18:45:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:39,611 INFO L478 AbstractCegarLoop]: Abstraction has 521 states and 923 transitions. [2022-03-17 18:45:39,611 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 923 transitions. [2022-03-17 18:45:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-17 18:45:39,619 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:39,619 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:45:39,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 18:45:39,619 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash -828964214, now seen corresponding path program 1 times [2022-03-17 18:45:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271527186] [2022-03-17 18:45:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:39,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:39,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271527186] [2022-03-17 18:45:39,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271527186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:39,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:39,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475889231] [2022-03-17 18:45:39,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,670 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,671 INFO L87 Difference]: Start difference. First operand 521 states and 923 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,760 INFO L93 Difference]: Finished difference Result 739 states and 1304 transitions. [2022-03-17 18:45:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-03-17 18:45:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,762 INFO L225 Difference]: With dead ends: 739 [2022-03-17 18:45:39,762 INFO L226 Difference]: Without dead ends: 739 [2022-03-17 18:45:39,763 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,763 INFO L912 BasicCegarLoop]: 134 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,763 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 141 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-17 18:45:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 737. [2022-03-17 18:45:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 733 states have (on average 1.7735334242837653) internal successors, (1300), 733 states have internal predecessors, (1300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1303 transitions. [2022-03-17 18:45:39,772 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1303 transitions. Word has length 29 [2022-03-17 18:45:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:39,773 INFO L478 AbstractCegarLoop]: Abstraction has 737 states and 1303 transitions. [2022-03-17 18:45:39,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1303 transitions. [2022-03-17 18:45:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-17 18:45:39,773 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:39,773 INFO L500 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] [2022-03-17 18:45:39,774 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 18:45:39,774 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:39,774 INFO L85 PathProgramCache]: Analyzing trace with hash 916417497, now seen corresponding path program 1 times [2022-03-17 18:45:39,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:39,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121072552] [2022-03-17 18:45:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:39,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:39,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121072552] [2022-03-17 18:45:39,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121072552] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:39,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:39,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971808956] [2022-03-17 18:45:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,798 INFO L87 Difference]: Start difference. First operand 737 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,871 INFO L93 Difference]: Finished difference Result 747 states and 1304 transitions. [2022-03-17 18:45:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-17 18:45:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,874 INFO L225 Difference]: With dead ends: 747 [2022-03-17 18:45:39,874 INFO L226 Difference]: Without dead ends: 747 [2022-03-17 18:45:39,874 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,874 INFO L912 BasicCegarLoop]: 147 mSDtfsCounter, 193 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,874 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 154 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-03-17 18:45:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 745. [2022-03-17 18:45:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 741 states have (on average 1.7543859649122806) internal successors, (1300), 741 states have internal predecessors, (1300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1303 transitions. [2022-03-17 18:45:39,884 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1303 transitions. Word has length 30 [2022-03-17 18:45:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:39,884 INFO L478 AbstractCegarLoop]: Abstraction has 745 states and 1303 transitions. [2022-03-17 18:45:39,884 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1303 transitions. [2022-03-17 18:45:39,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-17 18:45:39,885 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:39,885 INFO L500 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] [2022-03-17 18:45:39,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 18:45:39,885 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 71945626, now seen corresponding path program 1 times [2022-03-17 18:45:39,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:39,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88542184] [2022-03-17 18:45:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:39,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:39,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88542184] [2022-03-17 18:45:39,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88542184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:39,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:39,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347577192] [2022-03-17 18:45:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:39,908 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:39,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:39,909 INFO L87 Difference]: Start difference. First operand 745 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:39,983 INFO L93 Difference]: Finished difference Result 1387 states and 2448 transitions. [2022-03-17 18:45:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:39,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-17 18:45:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:39,987 INFO L225 Difference]: With dead ends: 1387 [2022-03-17 18:45:39,987 INFO L226 Difference]: Without dead ends: 1387 [2022-03-17 18:45:39,987 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:39,988 INFO L912 BasicCegarLoop]: 97 mSDtfsCounter, 225 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:39,988 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 104 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-03-17 18:45:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1033. [2022-03-17 18:45:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1029 states have (on average 1.7220602526724975) internal successors, (1772), 1029 states have internal predecessors, (1772), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1775 transitions. [2022-03-17 18:45:40,001 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1775 transitions. Word has length 30 [2022-03-17 18:45:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:40,002 INFO L478 AbstractCegarLoop]: Abstraction has 1033 states and 1775 transitions. [2022-03-17 18:45:40,002 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1775 transitions. [2022-03-17 18:45:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-17 18:45:40,003 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:40,003 INFO L500 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] [2022-03-17 18:45:40,003 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 18:45:40,003 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:40,003 INFO L85 PathProgramCache]: Analyzing trace with hash -925126727, now seen corresponding path program 1 times [2022-03-17 18:45:40,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:40,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906945386] [2022-03-17 18:45:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:40,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:40,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906945386] [2022-03-17 18:45:40,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906945386] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:40,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:40,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464104597] [2022-03-17 18:45:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:40,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:40,028 INFO L87 Difference]: Start difference. First operand 1033 states and 1775 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:40,101 INFO L93 Difference]: Finished difference Result 1451 states and 2488 transitions. [2022-03-17 18:45:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-17 18:45:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:40,105 INFO L225 Difference]: With dead ends: 1451 [2022-03-17 18:45:40,105 INFO L226 Difference]: Without dead ends: 1451 [2022-03-17 18:45:40,106 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:40,106 INFO L912 BasicCegarLoop]: 136 mSDtfsCounter, 199 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:40,106 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 143 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-03-17 18:45:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1449. [2022-03-17 18:45:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1445 states have (on average 1.719031141868512) internal successors, (2484), 1445 states have internal predecessors, (2484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2487 transitions. [2022-03-17 18:45:40,127 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2487 transitions. Word has length 30 [2022-03-17 18:45:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:40,127 INFO L478 AbstractCegarLoop]: Abstraction has 1449 states and 2487 transitions. [2022-03-17 18:45:40,128 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2487 transitions. [2022-03-17 18:45:40,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-17 18:45:40,129 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:40,129 INFO L500 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] [2022-03-17 18:45:40,129 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 18:45:40,129 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2064620282, now seen corresponding path program 1 times [2022-03-17 18:45:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:40,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385181134] [2022-03-17 18:45:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:40,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:40,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385181134] [2022-03-17 18:45:40,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385181134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:40,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:40,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:40,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143468043] [2022-03-17 18:45:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:40,152 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:40,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:40,153 INFO L87 Difference]: Start difference. First operand 1449 states and 2487 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:40,235 INFO L93 Difference]: Finished difference Result 1467 states and 2488 transitions. [2022-03-17 18:45:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-03-17 18:45:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:40,239 INFO L225 Difference]: With dead ends: 1467 [2022-03-17 18:45:40,240 INFO L226 Difference]: Without dead ends: 1467 [2022-03-17 18:45:40,240 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:40,240 INFO L912 BasicCegarLoop]: 144 mSDtfsCounter, 192 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:40,240 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 151 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-03-17 18:45:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1465. [2022-03-17 18:45:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1461 states have (on average 1.700205338809035) internal successors, (2484), 1461 states have internal predecessors, (2484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2487 transitions. [2022-03-17 18:45:40,270 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2487 transitions. Word has length 31 [2022-03-17 18:45:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:40,270 INFO L478 AbstractCegarLoop]: Abstraction has 1465 states and 2487 transitions. [2022-03-17 18:45:40,270 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2487 transitions. [2022-03-17 18:45:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-17 18:45:40,271 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:40,271 INFO L500 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] [2022-03-17 18:45:40,272 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 18:45:40,272 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1385875143, now seen corresponding path program 1 times [2022-03-17 18:45:40,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240607846] [2022-03-17 18:45:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:40,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:40,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:40,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240607846] [2022-03-17 18:45:40,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240607846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:40,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:40,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:40,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317516149] [2022-03-17 18:45:40,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:40,292 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:40,292 INFO L87 Difference]: Start difference. First operand 1465 states and 2487 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:40,365 INFO L93 Difference]: Finished difference Result 2699 states and 4632 transitions. [2022-03-17 18:45:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-03-17 18:45:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:40,371 INFO L225 Difference]: With dead ends: 2699 [2022-03-17 18:45:40,372 INFO L226 Difference]: Without dead ends: 2699 [2022-03-17 18:45:40,372 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:40,372 INFO L912 BasicCegarLoop]: 96 mSDtfsCounter, 218 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:40,372 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 103 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2022-03-17 18:45:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2057. [2022-03-17 18:45:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2053 states have (on average 1.6619581100828056) internal successors, (3412), 2053 states have internal predecessors, (3412), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 3415 transitions. [2022-03-17 18:45:40,398 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 3415 transitions. Word has length 31 [2022-03-17 18:45:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:40,398 INFO L478 AbstractCegarLoop]: Abstraction has 2057 states and 3415 transitions. [2022-03-17 18:45:40,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 3415 transitions. [2022-03-17 18:45:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-17 18:45:40,400 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:40,400 INFO L500 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] [2022-03-17 18:45:40,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 18:45:40,400 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 388802790, now seen corresponding path program 1 times [2022-03-17 18:45:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:40,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122164118] [2022-03-17 18:45:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:40,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122164118] [2022-03-17 18:45:40,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122164118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:40,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:40,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808261897] [2022-03-17 18:45:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:40,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:40,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:40,421 INFO L87 Difference]: Start difference. First operand 2057 states and 3415 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:40,494 INFO L93 Difference]: Finished difference Result 2859 states and 4744 transitions. [2022-03-17 18:45:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:40,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-03-17 18:45:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:40,500 INFO L225 Difference]: With dead ends: 2859 [2022-03-17 18:45:40,500 INFO L226 Difference]: Without dead ends: 2859 [2022-03-17 18:45:40,501 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:40,501 INFO L912 BasicCegarLoop]: 138 mSDtfsCounter, 193 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:40,501 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 145 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2022-03-17 18:45:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2857. [2022-03-17 18:45:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 2853 states have (on average 1.6614090431125133) internal successors, (4740), 2853 states have internal predecessors, (4740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4743 transitions. [2022-03-17 18:45:40,534 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4743 transitions. Word has length 31 [2022-03-17 18:45:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:40,534 INFO L478 AbstractCegarLoop]: Abstraction has 2857 states and 4743 transitions. [2022-03-17 18:45:40,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4743 transitions. [2022-03-17 18:45:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-17 18:45:40,536 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:40,536 INFO L500 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] [2022-03-17 18:45:40,536 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-17 18:45:40,537 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 12489205, now seen corresponding path program 1 times [2022-03-17 18:45:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:40,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255762816] [2022-03-17 18:45:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:40,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:40,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255762816] [2022-03-17 18:45:40,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255762816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:40,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:40,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407243156] [2022-03-17 18:45:40,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:40,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:40,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:40,556 INFO L87 Difference]: Start difference. First operand 2857 states and 4743 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:40,628 INFO L93 Difference]: Finished difference Result 2891 states and 4744 transitions. [2022-03-17 18:45:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-03-17 18:45:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:40,634 INFO L225 Difference]: With dead ends: 2891 [2022-03-17 18:45:40,634 INFO L226 Difference]: Without dead ends: 2891 [2022-03-17 18:45:40,635 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:40,635 INFO L912 BasicCegarLoop]: 141 mSDtfsCounter, 191 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:40,635 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 148 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:40,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2022-03-17 18:45:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2889. [2022-03-17 18:45:40,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2885 states have (on average 1.6429809358752165) internal successors, (4740), 2885 states have internal predecessors, (4740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4743 transitions. [2022-03-17 18:45:40,668 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4743 transitions. Word has length 32 [2022-03-17 18:45:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:40,669 INFO L478 AbstractCegarLoop]: Abstraction has 2889 states and 4743 transitions. [2022-03-17 18:45:40,669 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4743 transitions. [2022-03-17 18:45:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-17 18:45:40,671 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:40,671 INFO L500 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] [2022-03-17 18:45:40,671 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-17 18:45:40,671 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -831982666, now seen corresponding path program 1 times [2022-03-17 18:45:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:40,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423672211] [2022-03-17 18:45:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:40,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:40,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423672211] [2022-03-17 18:45:40,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423672211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:40,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:40,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:40,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212606034] [2022-03-17 18:45:40,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:40,690 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:40,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:40,691 INFO L87 Difference]: Start difference. First operand 2889 states and 4743 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:40,765 INFO L93 Difference]: Finished difference Result 5259 states and 8744 transitions. [2022-03-17 18:45:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-03-17 18:45:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:40,779 INFO L225 Difference]: With dead ends: 5259 [2022-03-17 18:45:40,779 INFO L226 Difference]: Without dead ends: 5259 [2022-03-17 18:45:40,780 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:40,780 INFO L912 BasicCegarLoop]: 95 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:40,780 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 102 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2022-03-17 18:45:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 4105. [2022-03-17 18:45:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 4101 states have (on average 1.6005852231163131) internal successors, (6564), 4101 states have internal predecessors, (6564), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 6567 transitions. [2022-03-17 18:45:40,847 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 6567 transitions. Word has length 32 [2022-03-17 18:45:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:40,847 INFO L478 AbstractCegarLoop]: Abstraction has 4105 states and 6567 transitions. [2022-03-17 18:45:40,847 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 6567 transitions. [2022-03-17 18:45:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-17 18:45:40,851 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:40,851 INFO L500 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] [2022-03-17 18:45:40,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-17 18:45:40,851 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:40,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1829055019, now seen corresponding path program 1 times [2022-03-17 18:45:40,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:40,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135172035] [2022-03-17 18:45:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:40,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:40,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:40,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135172035] [2022-03-17 18:45:40,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135172035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:40,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:40,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448097125] [2022-03-17 18:45:40,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:40,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:40,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:40,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:40,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:40,874 INFO L87 Difference]: Start difference. First operand 4105 states and 6567 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:40,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:40,947 INFO L93 Difference]: Finished difference Result 5643 states and 9032 transitions. [2022-03-17 18:45:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:40,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-03-17 18:45:40,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:40,960 INFO L225 Difference]: With dead ends: 5643 [2022-03-17 18:45:40,960 INFO L226 Difference]: Without dead ends: 5643 [2022-03-17 18:45:40,961 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:40,961 INFO L912 BasicCegarLoop]: 140 mSDtfsCounter, 187 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:40,961 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 147 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states. [2022-03-17 18:45:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 5641. [2022-03-17 18:45:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5641 states, 5637 states have (on average 1.6015611140677666) internal successors, (9028), 5637 states have internal predecessors, (9028), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5641 states to 5641 states and 9031 transitions. [2022-03-17 18:45:41,062 INFO L78 Accepts]: Start accepts. Automaton has 5641 states and 9031 transitions. Word has length 32 [2022-03-17 18:45:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:41,062 INFO L478 AbstractCegarLoop]: Abstraction has 5641 states and 9031 transitions. [2022-03-17 18:45:41,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5641 states and 9031 transitions. [2022-03-17 18:45:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 18:45:41,066 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:41,066 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:45:41,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-17 18:45:41,066 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash -21626014, now seen corresponding path program 1 times [2022-03-17 18:45:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:41,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207322801] [2022-03-17 18:45:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:41,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:41,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:41,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207322801] [2022-03-17 18:45:41,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207322801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:41,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:41,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351696667] [2022-03-17 18:45:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:41,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:41,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:41,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:41,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:41,087 INFO L87 Difference]: Start difference. First operand 5641 states and 9031 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:41,162 INFO L93 Difference]: Finished difference Result 5707 states and 9032 transitions. [2022-03-17 18:45:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:41,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-03-17 18:45:41,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:41,170 INFO L225 Difference]: With dead ends: 5707 [2022-03-17 18:45:41,170 INFO L226 Difference]: Without dead ends: 5707 [2022-03-17 18:45:41,170 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:41,171 INFO L912 BasicCegarLoop]: 138 mSDtfsCounter, 190 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:41,171 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 145 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-03-17 18:45:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5705. [2022-03-17 18:45:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5701 states have (on average 1.5835818277495177) internal successors, (9028), 5701 states have internal predecessors, (9028), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 9031 transitions. [2022-03-17 18:45:41,247 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 9031 transitions. Word has length 33 [2022-03-17 18:45:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:41,248 INFO L478 AbstractCegarLoop]: Abstraction has 5705 states and 9031 transitions. [2022-03-17 18:45:41,248 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 9031 transitions. [2022-03-17 18:45:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 18:45:41,252 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:41,252 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:45:41,252 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-17 18:45:41,252 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash -866097885, now seen corresponding path program 1 times [2022-03-17 18:45:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017976606] [2022-03-17 18:45:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:41,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:41,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017976606] [2022-03-17 18:45:41,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017976606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:41,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:41,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:41,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234751933] [2022-03-17 18:45:41,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:41,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:41,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:41,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:41,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:41,272 INFO L87 Difference]: Start difference. First operand 5705 states and 9031 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:41,349 INFO L93 Difference]: Finished difference Result 10251 states and 16456 transitions. [2022-03-17 18:45:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:41,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-03-17 18:45:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:41,360 INFO L225 Difference]: With dead ends: 10251 [2022-03-17 18:45:41,361 INFO L226 Difference]: Without dead ends: 10251 [2022-03-17 18:45:41,361 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:41,361 INFO L912 BasicCegarLoop]: 94 mSDtfsCounter, 204 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:41,361 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 101 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states. [2022-03-17 18:45:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 8201. [2022-03-17 18:45:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 8197 states have (on average 1.5386116872026352) internal successors, (12612), 8197 states have internal predecessors, (12612), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 12615 transitions. [2022-03-17 18:45:41,449 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 12615 transitions. Word has length 33 [2022-03-17 18:45:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:41,449 INFO L478 AbstractCegarLoop]: Abstraction has 8201 states and 12615 transitions. [2022-03-17 18:45:41,450 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 12615 transitions. [2022-03-17 18:45:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 18:45:41,456 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:41,456 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:45:41,456 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-17 18:45:41,456 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1863170238, now seen corresponding path program 1 times [2022-03-17 18:45:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:41,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296860738] [2022-03-17 18:45:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:41,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:41,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296860738] [2022-03-17 18:45:41,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296860738] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:41,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:41,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:41,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899365420] [2022-03-17 18:45:41,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:41,474 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:41,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:41,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:41,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:41,474 INFO L87 Difference]: Start difference. First operand 8201 states and 12615 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:41,552 INFO L93 Difference]: Finished difference Result 11147 states and 17160 transitions. [2022-03-17 18:45:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-03-17 18:45:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:41,564 INFO L225 Difference]: With dead ends: 11147 [2022-03-17 18:45:41,564 INFO L226 Difference]: Without dead ends: 11147 [2022-03-17 18:45:41,565 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:41,565 INFO L912 BasicCegarLoop]: 142 mSDtfsCounter, 181 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:41,565 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 149 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11147 states. [2022-03-17 18:45:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11147 to 11145. [2022-03-17 18:45:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11145 states, 11141 states have (on average 1.5398976752535678) internal successors, (17156), 11141 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11145 states to 11145 states and 17159 transitions. [2022-03-17 18:45:41,742 INFO L78 Accepts]: Start accepts. Automaton has 11145 states and 17159 transitions. Word has length 33 [2022-03-17 18:45:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:41,742 INFO L478 AbstractCegarLoop]: Abstraction has 11145 states and 17159 transitions. [2022-03-17 18:45:41,742 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 11145 states and 17159 transitions. [2022-03-17 18:45:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-17 18:45:41,748 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:41,749 INFO L500 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] [2022-03-17 18:45:41,749 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-17 18:45:41,749 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1079197679, now seen corresponding path program 1 times [2022-03-17 18:45:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:41,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532359487] [2022-03-17 18:45:41,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:41,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:41,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:41,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532359487] [2022-03-17 18:45:41,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532359487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:41,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:41,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:41,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618775699] [2022-03-17 18:45:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:41,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:41,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:41,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:41,767 INFO L87 Difference]: Start difference. First operand 11145 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:41,847 INFO L93 Difference]: Finished difference Result 11275 states and 17160 transitions. [2022-03-17 18:45:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:41,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-03-17 18:45:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:41,858 INFO L225 Difference]: With dead ends: 11275 [2022-03-17 18:45:41,858 INFO L226 Difference]: Without dead ends: 11275 [2022-03-17 18:45:41,858 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:41,859 INFO L912 BasicCegarLoop]: 135 mSDtfsCounter, 189 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:41,859 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 142 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11275 states. [2022-03-17 18:45:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11275 to 11273. [2022-03-17 18:45:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11273 states, 11269 states have (on average 1.5224066021829799) internal successors, (17156), 11269 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 17159 transitions. [2022-03-17 18:45:41,969 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 17159 transitions. Word has length 34 [2022-03-17 18:45:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:41,970 INFO L478 AbstractCegarLoop]: Abstraction has 11273 states and 17159 transitions. [2022-03-17 18:45:41,970 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 17159 transitions. [2022-03-17 18:45:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-17 18:45:41,976 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:41,976 INFO L500 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] [2022-03-17 18:45:41,976 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-17 18:45:41,977 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1923669550, now seen corresponding path program 1 times [2022-03-17 18:45:41,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:41,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077399772] [2022-03-17 18:45:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:41,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077399772] [2022-03-17 18:45:41,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077399772] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:41,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:41,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:41,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171011146] [2022-03-17 18:45:41,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:41,994 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:41,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:41,995 INFO L87 Difference]: Start difference. First operand 11273 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:42,086 INFO L93 Difference]: Finished difference Result 19979 states and 30856 transitions. [2022-03-17 18:45:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-03-17 18:45:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:42,110 INFO L225 Difference]: With dead ends: 19979 [2022-03-17 18:45:42,110 INFO L226 Difference]: Without dead ends: 19979 [2022-03-17 18:45:42,110 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:42,111 INFO L912 BasicCegarLoop]: 93 mSDtfsCounter, 197 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:42,111 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 100 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19979 states. [2022-03-17 18:45:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19979 to 16393. [2022-03-17 18:45:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16393 states, 16389 states have (on average 1.4763560925010677) internal successors, (24196), 16389 states have internal predecessors, (24196), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16393 states to 16393 states and 24199 transitions. [2022-03-17 18:45:42,328 INFO L78 Accepts]: Start accepts. Automaton has 16393 states and 24199 transitions. Word has length 34 [2022-03-17 18:45:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:42,328 INFO L478 AbstractCegarLoop]: Abstraction has 16393 states and 24199 transitions. [2022-03-17 18:45:42,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 16393 states and 24199 transitions. [2022-03-17 18:45:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-17 18:45:42,342 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:42,342 INFO L500 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] [2022-03-17 18:45:42,342 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-17 18:45:42,342 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:42,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1374225393, now seen corresponding path program 1 times [2022-03-17 18:45:42,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:42,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598252752] [2022-03-17 18:45:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:42,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:42,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:42,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598252752] [2022-03-17 18:45:42,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598252752] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:42,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:42,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153401411] [2022-03-17 18:45:42,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:42,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:42,361 INFO L87 Difference]: Start difference. First operand 16393 states and 24199 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:42,462 INFO L93 Difference]: Finished difference Result 22027 states and 32520 transitions. [2022-03-17 18:45:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:42,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-03-17 18:45:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:42,492 INFO L225 Difference]: With dead ends: 22027 [2022-03-17 18:45:42,493 INFO L226 Difference]: Without dead ends: 22027 [2022-03-17 18:45:42,493 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:42,493 INFO L912 BasicCegarLoop]: 144 mSDtfsCounter, 175 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:42,493 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 151 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22027 states. [2022-03-17 18:45:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22027 to 22025. [2022-03-17 18:45:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22025 states, 22021 states have (on average 1.4765905272240134) internal successors, (32516), 22021 states have internal predecessors, (32516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22025 states to 22025 states and 32519 transitions. [2022-03-17 18:45:42,860 INFO L78 Accepts]: Start accepts. Automaton has 22025 states and 32519 transitions. Word has length 34 [2022-03-17 18:45:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:42,860 INFO L478 AbstractCegarLoop]: Abstraction has 22025 states and 32519 transitions. [2022-03-17 18:45:42,860 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:42,860 INFO L276 IsEmpty]: Start isEmpty. Operand 22025 states and 32519 transitions. [2022-03-17 18:45:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-17 18:45:42,877 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:42,877 INFO L500 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] [2022-03-17 18:45:42,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-17 18:45:42,878 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash 495819198, now seen corresponding path program 1 times [2022-03-17 18:45:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:42,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976973310] [2022-03-17 18:45:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:42,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:42,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976973310] [2022-03-17 18:45:42,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976973310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:42,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:42,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:42,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742029287] [2022-03-17 18:45:42,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:42,895 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:42,896 INFO L87 Difference]: Start difference. First operand 22025 states and 32519 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:42,996 INFO L93 Difference]: Finished difference Result 22283 states and 32520 transitions. [2022-03-17 18:45:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:42,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-17 18:45:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:43,026 INFO L225 Difference]: With dead ends: 22283 [2022-03-17 18:45:43,026 INFO L226 Difference]: Without dead ends: 22283 [2022-03-17 18:45:43,027 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:43,027 INFO L912 BasicCegarLoop]: 132 mSDtfsCounter, 188 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:43,027 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 139 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22283 states. [2022-03-17 18:45:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22283 to 22281. [2022-03-17 18:45:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22281 states, 22277 states have (on average 1.4596220316918795) internal successors, (32516), 22277 states have internal predecessors, (32516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22281 states to 22281 states and 32519 transitions. [2022-03-17 18:45:43,321 INFO L78 Accepts]: Start accepts. Automaton has 22281 states and 32519 transitions. Word has length 35 [2022-03-17 18:45:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:43,321 INFO L478 AbstractCegarLoop]: Abstraction has 22281 states and 32519 transitions. [2022-03-17 18:45:43,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 22281 states and 32519 transitions. [2022-03-17 18:45:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-17 18:45:43,334 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:43,334 INFO L500 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] [2022-03-17 18:45:43,334 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-17 18:45:43,334 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -348652673, now seen corresponding path program 1 times [2022-03-17 18:45:43,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:43,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094059463] [2022-03-17 18:45:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:43,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094059463] [2022-03-17 18:45:43,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094059463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:43,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:43,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132164989] [2022-03-17 18:45:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:43,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:43,354 INFO L87 Difference]: Start difference. First operand 22281 states and 32519 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:43,593 INFO L93 Difference]: Finished difference Result 43531 states and 61960 transitions. [2022-03-17 18:45:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:43,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-17 18:45:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:43,651 INFO L225 Difference]: With dead ends: 43531 [2022-03-17 18:45:43,651 INFO L226 Difference]: Without dead ends: 43531 [2022-03-17 18:45:43,652 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:43,652 INFO L912 BasicCegarLoop]: 110 mSDtfsCounter, 208 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:43,652 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 117 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43531 states. [2022-03-17 18:45:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43531 to 43529. [2022-03-17 18:45:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43525 states have (on average 1.4234577828834003) internal successors, (61956), 43525 states have internal predecessors, (61956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 61959 transitions. [2022-03-17 18:45:44,249 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 61959 transitions. Word has length 35 [2022-03-17 18:45:44,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:44,249 INFO L478 AbstractCegarLoop]: Abstraction has 43529 states and 61959 transitions. [2022-03-17 18:45:44,250 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:44,250 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 61959 transitions. [2022-03-17 18:45:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-17 18:45:44,271 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:44,271 INFO L500 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] [2022-03-17 18:45:44,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-17 18:45:44,271 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash 648419680, now seen corresponding path program 1 times [2022-03-17 18:45:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:44,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538606] [2022-03-17 18:45:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:44,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:44,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:44,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538606] [2022-03-17 18:45:44,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:44,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:44,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397860540] [2022-03-17 18:45:44,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:44,309 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:44,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:44,310 INFO L87 Difference]: Start difference. First operand 43529 states and 61959 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:44,572 INFO L93 Difference]: Finished difference Result 49675 states and 72712 transitions. [2022-03-17 18:45:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:44,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-17 18:45:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:44,642 INFO L225 Difference]: With dead ends: 49675 [2022-03-17 18:45:44,643 INFO L226 Difference]: Without dead ends: 49675 [2022-03-17 18:45:44,643 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:44,643 INFO L912 BasicCegarLoop]: 149 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:44,644 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 156 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:45:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49675 states. [2022-03-17 18:45:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49675 to 43529. [2022-03-17 18:45:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43525 states have (on average 1.411694428489374) internal successors, (61444), 43525 states have internal predecessors, (61444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 61447 transitions. [2022-03-17 18:45:45,187 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 61447 transitions. Word has length 35 [2022-03-17 18:45:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:45,187 INFO L478 AbstractCegarLoop]: Abstraction has 43529 states and 61447 transitions. [2022-03-17 18:45:45,187 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 61447 transitions. [2022-03-17 18:45:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-17 18:45:45,208 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:45,208 INFO L500 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] [2022-03-17 18:45:45,208 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-17 18:45:45,208 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2076702253, now seen corresponding path program 1 times [2022-03-17 18:45:45,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:45,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833865876] [2022-03-17 18:45:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:45,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:45,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833865876] [2022-03-17 18:45:45,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833865876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:45,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:45,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588025994] [2022-03-17 18:45:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:45,228 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:45,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:45,229 INFO L87 Difference]: Start difference. First operand 43529 states and 61447 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:45,612 INFO L93 Difference]: Finished difference Result 75275 states and 107528 transitions. [2022-03-17 18:45:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:45,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-03-17 18:45:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:45,706 INFO L225 Difference]: With dead ends: 75275 [2022-03-17 18:45:45,706 INFO L226 Difference]: Without dead ends: 75275 [2022-03-17 18:45:45,707 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:45,710 INFO L912 BasicCegarLoop]: 91 mSDtfsCounter, 183 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:45,710 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 98 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75275 states. [2022-03-17 18:45:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75275 to 65033. [2022-03-17 18:45:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65033 states, 65029 states have (on average 1.3700349075028064) internal successors, (89092), 65029 states have internal predecessors, (89092), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65033 states to 65033 states and 89095 transitions. [2022-03-17 18:45:46,908 INFO L78 Accepts]: Start accepts. Automaton has 65033 states and 89095 transitions. Word has length 36 [2022-03-17 18:45:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:46,908 INFO L478 AbstractCegarLoop]: Abstraction has 65033 states and 89095 transitions. [2022-03-17 18:45:46,909 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 65033 states and 89095 transitions. [2022-03-17 18:45:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-17 18:45:47,030 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:47,031 INFO L500 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] [2022-03-17 18:45:47,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-17 18:45:47,031 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1079629900, now seen corresponding path program 1 times [2022-03-17 18:45:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:47,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294015403] [2022-03-17 18:45:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294015403] [2022-03-17 18:45:47,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294015403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:47,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:47,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:47,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694419999] [2022-03-17 18:45:47,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:47,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:47,267 INFO L87 Difference]: Start difference. First operand 65033 states and 89095 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:47,735 INFO L93 Difference]: Finished difference Result 85515 states and 116744 transitions. [2022-03-17 18:45:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-03-17 18:45:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:47,827 INFO L225 Difference]: With dead ends: 85515 [2022-03-17 18:45:47,827 INFO L226 Difference]: Without dead ends: 85515 [2022-03-17 18:45:47,827 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:47,828 INFO L912 BasicCegarLoop]: 148 mSDtfsCounter, 163 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:47,828 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 155 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:45:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85515 states. [2022-03-17 18:45:48,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85515 to 85513. [2022-03-17 18:45:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85513 states, 85509 states have (on average 1.3652364078634998) internal successors, (116740), 85509 states have internal predecessors, (116740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85513 states to 85513 states and 116743 transitions. [2022-03-17 18:45:49,510 INFO L78 Accepts]: Start accepts. Automaton has 85513 states and 116743 transitions. Word has length 36 [2022-03-17 18:45:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:49,510 INFO L478 AbstractCegarLoop]: Abstraction has 85513 states and 116743 transitions. [2022-03-17 18:45:49,510 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:49,510 INFO L276 IsEmpty]: Start isEmpty. Operand 85513 states and 116743 transitions. [2022-03-17 18:45:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-17 18:45:49,559 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:49,559 INFO L500 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] [2022-03-17 18:45:49,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-17 18:45:49,559 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash -46706245, now seen corresponding path program 1 times [2022-03-17 18:45:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:49,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891030208] [2022-03-17 18:45:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:49,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891030208] [2022-03-17 18:45:49,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891030208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:49,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:49,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:49,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396476821] [2022-03-17 18:45:49,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:49,616 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:49,616 INFO L87 Difference]: Start difference. First operand 85513 states and 116743 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:49,997 INFO L93 Difference]: Finished difference Result 87051 states and 117768 transitions. [2022-03-17 18:45:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:49,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-03-17 18:45:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:50,513 INFO L225 Difference]: With dead ends: 87051 [2022-03-17 18:45:50,514 INFO L226 Difference]: Without dead ends: 87051 [2022-03-17 18:45:50,514 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:50,515 INFO L912 BasicCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:50,515 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 133 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:45:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87051 states. [2022-03-17 18:45:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87051 to 87049. [2022-03-17 18:45:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87049 states, 87045 states have (on average 1.3529094146705727) internal successors, (117764), 87045 states have internal predecessors, (117764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87049 states to 87049 states and 117767 transitions. [2022-03-17 18:45:51,614 INFO L78 Accepts]: Start accepts. Automaton has 87049 states and 117767 transitions. Word has length 37 [2022-03-17 18:45:51,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:51,614 INFO L478 AbstractCegarLoop]: Abstraction has 87049 states and 117767 transitions. [2022-03-17 18:45:51,614 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 87049 states and 117767 transitions. [2022-03-17 18:45:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-17 18:45:51,670 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:51,671 INFO L500 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] [2022-03-17 18:45:51,671 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-17 18:45:51,671 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -891178116, now seen corresponding path program 1 times [2022-03-17 18:45:51,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:51,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185132708] [2022-03-17 18:45:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:51,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:51,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185132708] [2022-03-17 18:45:51,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185132708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:51,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:51,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:51,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123837842] [2022-03-17 18:45:51,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:51,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:51,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:51,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:51,693 INFO L87 Difference]: Start difference. First operand 87049 states and 117767 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:52,288 INFO L93 Difference]: Finished difference Result 147467 states and 200712 transitions. [2022-03-17 18:45:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:52,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-03-17 18:45:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:52,518 INFO L225 Difference]: With dead ends: 147467 [2022-03-17 18:45:52,518 INFO L226 Difference]: Without dead ends: 147467 [2022-03-17 18:45:52,519 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:52,519 INFO L912 BasicCegarLoop]: 90 mSDtfsCounter, 176 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:52,519 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147467 states. [2022-03-17 18:45:53,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147467 to 131081. [2022-03-17 18:45:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131081 states, 131077 states have (on average 1.312480450422271) internal successors, (172036), 131077 states have internal predecessors, (172036), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131081 states to 131081 states and 172039 transitions. [2022-03-17 18:45:54,127 INFO L78 Accepts]: Start accepts. Automaton has 131081 states and 172039 transitions. Word has length 37 [2022-03-17 18:45:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:54,128 INFO L478 AbstractCegarLoop]: Abstraction has 131081 states and 172039 transitions. [2022-03-17 18:45:54,129 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 131081 states and 172039 transitions. [2022-03-17 18:45:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-17 18:45:54,202 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:54,202 INFO L500 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] [2022-03-17 18:45:54,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-17 18:45:54,203 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1888250469, now seen corresponding path program 1 times [2022-03-17 18:45:54,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:54,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163155967] [2022-03-17 18:45:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:54,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:54,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163155967] [2022-03-17 18:45:54,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163155967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:54,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:54,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:54,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441191623] [2022-03-17 18:45:54,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:54,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:54,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:54,233 INFO L87 Difference]: Start difference. First operand 131081 states and 172039 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:54,916 INFO L93 Difference]: Finished difference Result 169995 states and 221192 transitions. [2022-03-17 18:45:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:54,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-03-17 18:45:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:55,136 INFO L225 Difference]: With dead ends: 169995 [2022-03-17 18:45:55,136 INFO L226 Difference]: Without dead ends: 169995 [2022-03-17 18:45:55,136 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:55,138 INFO L912 BasicCegarLoop]: 150 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:55,139 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 157 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169995 states. [2022-03-17 18:45:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169995 to 169993. [2022-03-17 18:45:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169993 states, 169989 states have (on average 1.3011900770049827) internal successors, (221188), 169989 states have internal predecessors, (221188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169993 states to 169993 states and 221191 transitions. [2022-03-17 18:45:57,357 INFO L78 Accepts]: Start accepts. Automaton has 169993 states and 221191 transitions. Word has length 37 [2022-03-17 18:45:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:45:57,358 INFO L478 AbstractCegarLoop]: Abstraction has 169993 states and 221191 transitions. [2022-03-17 18:45:57,358 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 169993 states and 221191 transitions. [2022-03-17 18:45:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-17 18:45:57,457 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:45:57,457 INFO L500 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] [2022-03-17 18:45:57,457 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-17 18:45:57,457 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:45:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:45:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1856684344, now seen corresponding path program 1 times [2022-03-17 18:45:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:45:57,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274579008] [2022-03-17 18:45:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:45:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:45:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:45:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:45:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:45:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:45:57,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274579008] [2022-03-17 18:45:57,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274579008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:45:57,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:45:57,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:45:57,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470382927] [2022-03-17 18:45:57,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:45:57,474 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:45:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:45:57,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:45:57,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:45:57,475 INFO L87 Difference]: Start difference. First operand 169993 states and 221191 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:45:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:45:58,262 INFO L93 Difference]: Finished difference Result 172043 states and 221192 transitions. [2022-03-17 18:45:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:45:58,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-17 18:45:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:45:58,513 INFO L225 Difference]: With dead ends: 172043 [2022-03-17 18:45:58,513 INFO L226 Difference]: Without dead ends: 172043 [2022-03-17 18:45:58,514 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:45:58,514 INFO L912 BasicCegarLoop]: 123 mSDtfsCounter, 185 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:45:58,515 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 130 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:45:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172043 states. [2022-03-17 18:46:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172043 to 172041. [2022-03-17 18:46:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172041 states, 172037 states have (on average 1.2857001691496597) internal successors, (221188), 172037 states have internal predecessors, (221188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172041 states to 172041 states and 221191 transitions. [2022-03-17 18:46:00,907 INFO L78 Accepts]: Start accepts. Automaton has 172041 states and 221191 transitions. Word has length 38 [2022-03-17 18:46:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:46:00,907 INFO L478 AbstractCegarLoop]: Abstraction has 172041 states and 221191 transitions. [2022-03-17 18:46:00,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 172041 states and 221191 transitions. [2022-03-17 18:46:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-17 18:46:01,037 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:46:01,038 INFO L500 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] [2022-03-17 18:46:01,038 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-17 18:46:01,038 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:46:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:46:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1593811081, now seen corresponding path program 1 times [2022-03-17 18:46:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:46:01,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253767721] [2022-03-17 18:46:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:46:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:46:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:46:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:46:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:46:01,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253767721] [2022-03-17 18:46:01,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253767721] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:46:01,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:46:01,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:46:01,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111658523] [2022-03-17 18:46:01,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:46:01,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:46:01,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:46:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:46:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:46:01,066 INFO L87 Difference]: Start difference. First operand 172041 states and 221191 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:46:01,938 INFO L93 Difference]: Finished difference Result 286731 states and 368648 transitions. [2022-03-17 18:46:01,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:46:01,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-17 18:46:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:46:02,393 INFO L225 Difference]: With dead ends: 286731 [2022-03-17 18:46:02,394 INFO L226 Difference]: Without dead ends: 286731 [2022-03-17 18:46:02,394 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:46:02,396 INFO L912 BasicCegarLoop]: 89 mSDtfsCounter, 169 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:46:02,397 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:46:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286731 states. [2022-03-17 18:46:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286731 to 262153. [2022-03-17 18:46:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262153 states, 262149 states have (on average 1.2499914170948583) internal successors, (327684), 262149 states have internal predecessors, (327684), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262153 states to 262153 states and 327687 transitions. [2022-03-17 18:46:05,899 INFO L78 Accepts]: Start accepts. Automaton has 262153 states and 327687 transitions. Word has length 38 [2022-03-17 18:46:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:46:05,901 INFO L478 AbstractCegarLoop]: Abstraction has 262153 states and 327687 transitions. [2022-03-17 18:46:05,901 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 262153 states and 327687 transitions. [2022-03-17 18:46:06,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-17 18:46:06,066 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:46:06,066 INFO L500 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] [2022-03-17 18:46:06,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-17 18:46:06,067 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:46:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:46:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash 596738728, now seen corresponding path program 1 times [2022-03-17 18:46:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:46:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289811750] [2022-03-17 18:46:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:46:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:46:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:46:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:46:06,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:46:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289811750] [2022-03-17 18:46:06,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289811750] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:46:06,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:46:06,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:46:06,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643914514] [2022-03-17 18:46:06,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:46:06,091 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:46:06,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:46:06,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:46:06,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:46:06,091 INFO L87 Difference]: Start difference. First operand 262153 states and 327687 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:46:07,188 INFO L93 Difference]: Finished difference Result 335883 states and 413704 transitions. [2022-03-17 18:46:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:46:07,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-17 18:46:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:46:07,723 INFO L225 Difference]: With dead ends: 335883 [2022-03-17 18:46:07,724 INFO L226 Difference]: Without dead ends: 335883 [2022-03-17 18:46:07,724 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:46:07,725 INFO L912 BasicCegarLoop]: 152 mSDtfsCounter, 151 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:46:07,726 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 159 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:46:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335883 states. [2022-03-17 18:46:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335883 to 335881. [2022-03-17 18:46:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335881 states, 335877 states have (on average 1.2317008905045597) internal successors, (413700), 335877 states have internal predecessors, (413700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335881 states to 335881 states and 413703 transitions. [2022-03-17 18:46:12,624 INFO L78 Accepts]: Start accepts. Automaton has 335881 states and 413703 transitions. Word has length 38 [2022-03-17 18:46:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:46:12,624 INFO L478 AbstractCegarLoop]: Abstraction has 335881 states and 413703 transitions. [2022-03-17 18:46:12,628 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:12,628 INFO L276 IsEmpty]: Start isEmpty. Operand 335881 states and 413703 transitions. [2022-03-17 18:46:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 18:46:12,822 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:46:12,822 INFO L500 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] [2022-03-17 18:46:12,822 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-17 18:46:12,823 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:46:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:46:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2131430441, now seen corresponding path program 1 times [2022-03-17 18:46:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:46:12,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332119671] [2022-03-17 18:46:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:46:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:46:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:46:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:46:12,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:46:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332119671] [2022-03-17 18:46:12,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332119671] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:46:12,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:46:12,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:46:12,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835238241] [2022-03-17 18:46:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:46:12,913 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:46:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:46:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:46:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:46:12,913 INFO L87 Difference]: Start difference. First operand 335881 states and 413703 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:46:13,963 INFO L93 Difference]: Finished difference Result 339979 states and 413704 transitions. [2022-03-17 18:46:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:46:13,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-03-17 18:46:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:46:14,645 INFO L225 Difference]: With dead ends: 339979 [2022-03-17 18:46:14,645 INFO L226 Difference]: Without dead ends: 339979 [2022-03-17 18:46:14,646 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:46:14,646 INFO L912 BasicCegarLoop]: 120 mSDtfsCounter, 184 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:46:14,646 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 127 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:46:14,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339979 states. [2022-03-17 18:46:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339979 to 339977. [2022-03-17 18:46:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339977 states, 339973 states have (on average 1.2168613389886844) internal successors, (413700), 339973 states have internal predecessors, (413700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339977 states to 339977 states and 413703 transitions. [2022-03-17 18:46:18,557 INFO L78 Accepts]: Start accepts. Automaton has 339977 states and 413703 transitions. Word has length 39 [2022-03-17 18:46:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:46:18,558 INFO L478 AbstractCegarLoop]: Abstraction has 339977 states and 413703 transitions. [2022-03-17 18:46:18,558 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 339977 states and 413703 transitions. [2022-03-17 18:46:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 18:46:18,727 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:46:18,727 INFO L500 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] [2022-03-17 18:46:18,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-17 18:46:18,727 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:46:18,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:46:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1319064984, now seen corresponding path program 1 times [2022-03-17 18:46:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:46:18,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961950736] [2022-03-17 18:46:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:46:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:46:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:46:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:46:18,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:46:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961950736] [2022-03-17 18:46:18,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961950736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:46:18,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:46:18,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:46:18,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679945014] [2022-03-17 18:46:18,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:46:18,744 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:46:18,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:46:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:46:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:46:18,745 INFO L87 Difference]: Start difference. First operand 339977 states and 413703 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:46:20,406 INFO L93 Difference]: Finished difference Result 557067 states and 671752 transitions. [2022-03-17 18:46:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:46:20,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-03-17 18:46:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:46:21,313 INFO L225 Difference]: With dead ends: 557067 [2022-03-17 18:46:21,314 INFO L226 Difference]: Without dead ends: 557067 [2022-03-17 18:46:21,314 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:46:21,315 INFO L912 BasicCegarLoop]: 88 mSDtfsCounter, 162 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:46:21,316 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 95 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:46:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557067 states. [2022-03-17 18:46:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557067 to 524297. [2022-03-17 18:46:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524297 states, 524293 states have (on average 1.1874963045472664) internal successors, (622596), 524293 states have internal predecessors, (622596), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524297 states to 524297 states and 622599 transitions. [2022-03-17 18:46:28,659 INFO L78 Accepts]: Start accepts. Automaton has 524297 states and 622599 transitions. Word has length 39 [2022-03-17 18:46:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:46:28,660 INFO L478 AbstractCegarLoop]: Abstraction has 524297 states and 622599 transitions. [2022-03-17 18:46:28,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 524297 states and 622599 transitions. [2022-03-17 18:46:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 18:46:29,433 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:46:29,433 INFO L500 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] [2022-03-17 18:46:29,433 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-17 18:46:29,434 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:46:29,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:46:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash 321992631, now seen corresponding path program 1 times [2022-03-17 18:46:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:46:29,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020152795] [2022-03-17 18:46:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:46:29,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:46:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:46:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:46:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:46:29,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020152795] [2022-03-17 18:46:29,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020152795] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:46:29,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:46:29,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:46:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225737316] [2022-03-17 18:46:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:46:29,495 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:46:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:46:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:46:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:46:29,495 INFO L87 Difference]: Start difference. First operand 524297 states and 622599 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:46:31,670 INFO L93 Difference]: Finished difference Result 663563 states and 770056 transitions. [2022-03-17 18:46:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:46:31,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-03-17 18:46:31,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:46:32,801 INFO L225 Difference]: With dead ends: 663563 [2022-03-17 18:46:32,802 INFO L226 Difference]: Without dead ends: 663563 [2022-03-17 18:46:32,802 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:46:32,802 INFO L912 BasicCegarLoop]: 154 mSDtfsCounter, 145 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:46:32,802 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 161 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:46:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663563 states. [2022-03-17 18:46:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663563 to 663561. [2022-03-17 18:46:39,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663561 states, 663557 states have (on average 1.1604911107862625) internal successors, (770052), 663557 states have internal predecessors, (770052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663561 states to 663561 states and 770055 transitions. [2022-03-17 18:46:41,844 INFO L78 Accepts]: Start accepts. Automaton has 663561 states and 770055 transitions. Word has length 39 [2022-03-17 18:46:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:46:41,845 INFO L478 AbstractCegarLoop]: Abstraction has 663561 states and 770055 transitions. [2022-03-17 18:46:41,845 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 663561 states and 770055 transitions. [2022-03-17 18:46:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 18:46:42,668 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:46:42,668 INFO L500 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] [2022-03-17 18:46:42,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-17 18:46:42,668 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:46:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:46:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2058624732, now seen corresponding path program 1 times [2022-03-17 18:46:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:46:42,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982450321] [2022-03-17 18:46:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:46:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:46:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:42,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:46:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:46:42,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:46:42,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982450321] [2022-03-17 18:46:42,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982450321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:46:42,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:46:42,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:46:42,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277661164] [2022-03-17 18:46:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:46:42,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:46:42,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:46:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:46:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:46:42,753 INFO L87 Difference]: Start difference. First operand 663561 states and 770055 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:46:45,118 INFO L93 Difference]: Finished difference Result 671755 states and 770056 transitions. [2022-03-17 18:46:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:46:45,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-03-17 18:46:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:46:46,735 INFO L225 Difference]: With dead ends: 671755 [2022-03-17 18:46:46,735 INFO L226 Difference]: Without dead ends: 671755 [2022-03-17 18:46:46,735 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:46:46,737 INFO L912 BasicCegarLoop]: 117 mSDtfsCounter, 183 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:46:46,738 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 124 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:46:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671755 states. [2022-03-17 18:46:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671755 to 671753. [2022-03-17 18:46:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671753 states, 671749 states have (on average 1.1463388855063423) internal successors, (770052), 671749 states have internal predecessors, (770052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671753 states to 671753 states and 770055 transitions. [2022-03-17 18:46:56,482 INFO L78 Accepts]: Start accepts. Automaton has 671753 states and 770055 transitions. Word has length 40 [2022-03-17 18:46:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:46:56,483 INFO L478 AbstractCegarLoop]: Abstraction has 671753 states and 770055 transitions. [2022-03-17 18:46:56,483 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:46:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 671753 states and 770055 transitions. [2022-03-17 18:46:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 18:46:57,364 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:46:57,364 INFO L500 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] [2022-03-17 18:46:57,364 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-17 18:46:57,364 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:46:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:46:57,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1391870693, now seen corresponding path program 1 times [2022-03-17 18:46:57,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:46:57,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017999959] [2022-03-17 18:46:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:46:57,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:46:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:46:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:46:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:46:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:46:57,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017999959] [2022-03-17 18:46:57,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017999959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:46:57,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:46:57,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:46:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579964649] [2022-03-17 18:46:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:46:57,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:46:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:46:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:46:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:46:57,399 INFO L87 Difference]: Start difference. First operand 671753 states and 770055 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:47:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:47:00,668 INFO L93 Difference]: Finished difference Result 1081353 states and 1212423 transitions. [2022-03-17 18:47:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:47:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-03-17 18:47:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:47:02,885 INFO L225 Difference]: With dead ends: 1081353 [2022-03-17 18:47:02,885 INFO L226 Difference]: Without dead ends: 1081353 [2022-03-17 18:47:02,885 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:47:02,886 INFO L912 BasicCegarLoop]: 86 mSDtfsCounter, 154 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:47:02,886 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 93 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:47:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081353 states. [2022-03-17 18:47:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081353 to 1048585. [2022-03-17 18:47:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048585 states, 1048581 states have (on average 1.1249984502866255) internal successors, (1179652), 1048581 states have internal predecessors, (1179652), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:47:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048585 states to 1048585 states and 1179655 transitions. [2022-03-17 18:47:16,876 INFO L78 Accepts]: Start accepts. Automaton has 1048585 states and 1179655 transitions. Word has length 40 [2022-03-17 18:47:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:47:16,876 INFO L478 AbstractCegarLoop]: Abstraction has 1048585 states and 1179655 transitions. [2022-03-17 18:47:16,876 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:47:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1048585 states and 1179655 transitions. [2022-03-17 18:47:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 18:47:18,095 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:47:18,095 INFO L500 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] [2022-03-17 18:47:18,096 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-17 18:47:18,097 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:47:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:47:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash 394798340, now seen corresponding path program 1 times [2022-03-17 18:47:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:47:18,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2514366] [2022-03-17 18:47:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:47:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:47:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:47:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:47:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:47:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:47:18,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:47:18,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2514366] [2022-03-17 18:47:18,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2514366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:47:18,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:47:18,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 18:47:18,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954355182] [2022-03-17 18:47:18,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:47:18,800 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 18:47:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:47:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 18:47:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 18:47:18,800 INFO L87 Difference]: Start difference. First operand 1048585 states and 1179655 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:47:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:47:22,951 INFO L93 Difference]: Finished difference Result 1310727 states and 1425414 transitions. [2022-03-17 18:47:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 18:47:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-03-17 18:47:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:47:22,952 INFO L225 Difference]: With dead ends: 1310727 [2022-03-17 18:47:22,952 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 18:47:22,952 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:47:22,953 INFO L912 BasicCegarLoop]: 155 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:47:22,954 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 162 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:47:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 18:47:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 18:47:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 18:47:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 18:47:22,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-03-17 18:47:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:47:22,955 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 18:47:22,955 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 18:47:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 18:47:22,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 18:47:22,985 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 18:47:22,986 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-17 18:47:22,988 INFO L718 BasicCegarLoop]: Path program 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] [2022-03-17 18:47:22,988 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 18:47:22,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:47:22 BasicIcfg [2022-03-17 18:47:22,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 18:47:22,990 INFO L158 Benchmark]: Toolchain (without parser) took 105761.89ms. Allocated memory was 252.7MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 201.1MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-03-17 18:47:22,990 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 252.7MB. Free memory is still 217.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 18:47:22,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.42ms. Allocated memory was 252.7MB in the beginning and 434.1MB in the end (delta: 181.4MB). Free memory was 200.8MB in the beginning and 408.2MB in the end (delta: -207.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-17 18:47:22,990 INFO L158 Benchmark]: Boogie Preprocessor took 37.97ms. Allocated memory is still 434.1MB. Free memory was 408.2MB in the beginning and 406.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 18:47:22,991 INFO L158 Benchmark]: RCFGBuilder took 412.50ms. Allocated memory is still 434.1MB. Free memory was 406.2MB in the beginning and 391.9MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-17 18:47:22,991 INFO L158 Benchmark]: IcfgTransformer took 39.62ms. Allocated memory is still 434.1MB. Free memory was 391.9MB in the beginning and 390.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 18:47:22,991 INFO L158 Benchmark]: TraceAbstraction took 104998.71ms. Allocated memory was 434.1MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 389.8MB in the beginning and 5.1GB in the end (delta: -4.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-03-17 18:47:22,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 252.7MB. Free memory is still 217.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 267.42ms. Allocated memory was 252.7MB in the beginning and 434.1MB in the end (delta: 181.4MB). Free memory was 200.8MB in the beginning and 408.2MB in the end (delta: -207.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.97ms. Allocated memory is still 434.1MB. Free memory was 408.2MB in the beginning and 406.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 412.50ms. Allocated memory is still 434.1MB. Free memory was 406.2MB in the beginning and 391.9MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 39.62ms. Allocated memory is still 434.1MB. Free memory was 391.9MB in the beginning and 390.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 104998.71ms. Allocated memory was 434.1MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 389.8MB in the beginning and 5.1GB in the end (delta: -4.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 233]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 105.0s, OverallIterations: 42, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 4.9s, AutomataDifference: 32.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7972 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7972 mSDsluCounter, 5546 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 296 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3679 IncrementalHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 5250 mSDtfsCounter, 3679 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1048585occurred in iteration=41, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 65.5s AutomataMinimizationTime, 42 MinimizatonAttempts, 131118 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1395 NumberOfCodeBlocks, 1395 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1353 ConstructedInterpolants, 0 QuantifiedInterpolants, 3075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-17 18:47:23,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...