/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/nla-digbench-scaling/hard2_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 03:07:50,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 03:07:50,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 03:07:50,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 03:07:50,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 03:07:50,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 03:07:50,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 03:07:50,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 03:07:50,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 03:07:50,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 03:07:50,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 03:07:50,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 03:07:50,778 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 03:07:50,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 03:07:50,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 03:07:50,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 03:07:50,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 03:07:50,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 03:07:50,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 03:07:50,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 03:07:50,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 03:07:50,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 03:07:50,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 03:07:50,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 03:07:50,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 03:07:50,810 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 03:07:50,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 03:07:50,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 03:07:50,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 03:07:50,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 03:07:50,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 03:07:50,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 03:07:50,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 03:07:50,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 03:07:50,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 03:07:50,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 03:07:50,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 03:07:50,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 03:07:50,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 03:07:50,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 03:07:50,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 03:07:50,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 03:07:50,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 03:07:50,813 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 03:07:50,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 03:07:51,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 03:07:51,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 03:07:51,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 03:07:51,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 03:07:51,038 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 03:07:51,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c [2022-04-05 03:07:51,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82cb9d80e/23d72ed6e68148a9b96e1015ea565848/FLAGfe4f54858 [2022-04-05 03:07:51,403 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 03:07:51,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c [2022-04-05 03:07:51,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82cb9d80e/23d72ed6e68148a9b96e1015ea565848/FLAGfe4f54858 [2022-04-05 03:07:51,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82cb9d80e/23d72ed6e68148a9b96e1015ea565848 [2022-04-05 03:07:51,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 03:07:51,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 03:07:51,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 03:07:51,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 03:07:51,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 03:07:51,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:07:51" (1/1) ... [2022-04-05 03:07:51,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0bc03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:51, skipping insertion in model container [2022-04-05 03:07:51,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:07:51" (1/1) ... [2022-04-05 03:07:51,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 03:07:51,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 03:07:51,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c[526,539] [2022-04-05 03:07:52,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 03:07:52,027 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 03:07:52,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c[526,539] [2022-04-05 03:07:52,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 03:07:52,059 INFO L208 MainTranslator]: Completed translation [2022-04-05 03:07:52,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52 WrapperNode [2022-04-05 03:07:52,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 03:07:52,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 03:07:52,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 03:07:52,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 03:07:52,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 03:07:52,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 03:07:52,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 03:07:52,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 03:07:52,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 03:07:52,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:07:52,157 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) [2022-04-05 03:07:52,219 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 [2022-04-05 03:07:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 03:07:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 03:07:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 03:07:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 03:07:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 03:07:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 03:07:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 03:07:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 03:07:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 03:07:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 03:07:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 03:07:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 03:07:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 03:07:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 03:07:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 03:07:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 03:07:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 03:07:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 03:07:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 03:07:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 03:07:52,286 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 03:07:52,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 03:07:52,431 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 03:07:52,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 03:07:52,435 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 03:07:52,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:07:52 BoogieIcfgContainer [2022-04-05 03:07:52,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 03:07:52,437 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 03:07:52,437 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 03:07:52,438 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 03:07:52,440 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:07:52" (1/1) ... [2022-04-05 03:07:52,442 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 03:07:52,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 03:07:52 BasicIcfg [2022-04-05 03:07:52,452 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 03:07:52,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 03:07:52,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 03:07:52,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 03:07:52,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 03:07:51" (1/4) ... [2022-04-05 03:07:52,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d671d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:07:52, skipping insertion in model container [2022-04-05 03:07:52,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:07:52" (2/4) ... [2022-04-05 03:07:52,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d671d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:07:52, skipping insertion in model container [2022-04-05 03:07:52,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:07:52" (3/4) ... [2022-04-05 03:07:52,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d671d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 03:07:52, skipping insertion in model container [2022-04-05 03:07:52,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 03:07:52" (4/4) ... [2022-04-05 03:07:52,458 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.cJordan [2022-04-05 03:07:52,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 03:07:52,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 03:07:52,522 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 03:07:52,528 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 [2022-04-05 03:07:52,529 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 03:07:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 03:07:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-05 03:07:52,552 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:52,552 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:52,553 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:52,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:52,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1625753047, now seen corresponding path program 1 times [2022-04-05 03:07:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:52,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055412851] [2022-04-05 03:07:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:52,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 03:07:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 03:07:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:07:52,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:52,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055412851] [2022-04-05 03:07:52,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055412851] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:07:52,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:07:52,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 03:07:52,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460402762] [2022-04-05 03:07:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:07:52,742 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 03:07:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 03:07:52,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 03:07:52,766 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:07:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:52,827 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-04-05 03:07:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 03:07:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-05 03:07:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:52,836 INFO L225 Difference]: With dead ends: 35 [2022-04-05 03:07:52,836 INFO L226 Difference]: Without dead ends: 30 [2022-04-05 03:07:52,838 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 03:07:52,841 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:52,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:07:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-05 03:07:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-05 03:07:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 03:07:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-04-05 03:07:52,869 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2022-04-05 03:07:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:52,869 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-04-05 03:07:52,870 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:07:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-04-05 03:07:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-05 03:07:52,871 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:52,872 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:52,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 03:07:52,872 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash 861759786, now seen corresponding path program 1 times [2022-04-05 03:07:52,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:52,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212614613] [2022-04-05 03:07:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 03:07:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:52,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 03:07:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:07:53,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:53,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212614613] [2022-04-05 03:07:53,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212614613] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:07:53,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:07:53,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 03:07:53,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457178637] [2022-04-05 03:07:53,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:07:53,003 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 03:07:53,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 03:07:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 03:07:53,005 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:07:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:53,179 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2022-04-05 03:07:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 03:07:53,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-05 03:07:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:53,181 INFO L225 Difference]: With dead ends: 41 [2022-04-05 03:07:53,181 INFO L226 Difference]: Without dead ends: 41 [2022-04-05 03:07:53,181 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 03:07:53,182 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:53,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:07:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-05 03:07:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-04-05 03:07:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 03:07:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-04-05 03:07:53,188 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2022-04-05 03:07:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:53,188 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-04-05 03:07:53,189 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 03:07:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-05 03:07:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-05 03:07:53,189 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:53,189 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:53,189 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 03:07:53,190 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash 325569287, now seen corresponding path program 1 times [2022-04-05 03:07:53,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:53,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407314346] [2022-04-05 03:07:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:53,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:53,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 03:07:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 03:07:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 03:07:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:07:53,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:53,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407314346] [2022-04-05 03:07:53,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407314346] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:07:53,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:07:53,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 03:07:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932748244] [2022-04-05 03:07:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:07:53,242 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 03:07:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 03:07:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 03:07:53,242 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 03:07:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:53,358 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-04-05 03:07:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 03:07:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-05 03:07:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:53,360 INFO L225 Difference]: With dead ends: 45 [2022-04-05 03:07:53,360 INFO L226 Difference]: Without dead ends: 45 [2022-04-05 03:07:53,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 03:07:53,361 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:53,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 45 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:07:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-04-05 03:07:53,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2022-04-05 03:07:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 03:07:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-04-05 03:07:53,366 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 22 [2022-04-05 03:07:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:53,366 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-04-05 03:07:53,366 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 03:07:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-04-05 03:07:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-05 03:07:53,367 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:53,367 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:53,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 03:07:53,367 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1461652409, now seen corresponding path program 1 times [2022-04-05 03:07:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:53,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148986716] [2022-04-05 03:07:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:53,377 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:07:53,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747009096] [2022-04-05 03:07:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:07:53,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:07:53,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 03:07:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:53,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 03:07:53,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:07:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 03:07:53,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:07:53,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:53,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148986716] [2022-04-05 03:07:53,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:07:53,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747009096] [2022-04-05 03:07:53,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747009096] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:07:53,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:07:53,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 03:07:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612729131] [2022-04-05 03:07:53,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:07:53,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:07:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:07:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 03:07:53,739 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 03:07:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:53,814 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2022-04-05 03:07:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:07:53,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-04-05 03:07:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:53,816 INFO L225 Difference]: With dead ends: 53 [2022-04-05 03:07:53,816 INFO L226 Difference]: Without dead ends: 52 [2022-04-05 03:07:53,817 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 03:07:53,823 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:53,824 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:07:53,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-05 03:07:53,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-04-05 03:07:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 03:07:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2022-04-05 03:07:53,837 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 27 [2022-04-05 03:07:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:53,837 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2022-04-05 03:07:53,837 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 03:07:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-04-05 03:07:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-05 03:07:53,838 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:53,838 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:53,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 03:07:54,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:54,066 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:54,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:54,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1008917278, now seen corresponding path program 1 times [2022-04-05 03:07:54,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:54,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624599436] [2022-04-05 03:07:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:54,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:54,079 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:07:54,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851668901] [2022-04-05 03:07:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:54,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:54,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:07:54,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:07:54,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 03:07:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:54,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 03:07:54,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:07:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 03:07:54,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:07:54,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:54,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624599436] [2022-04-05 03:07:54,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:07:54,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851668901] [2022-04-05 03:07:54,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851668901] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:07:54,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:07:54,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 03:07:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145496477] [2022-04-05 03:07:54,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:07:54,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:07:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:07:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 03:07:54,225 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 03:07:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:54,258 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2022-04-05 03:07:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:07:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-05 03:07:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:54,259 INFO L225 Difference]: With dead ends: 63 [2022-04-05 03:07:54,260 INFO L226 Difference]: Without dead ends: 58 [2022-04-05 03:07:54,260 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 03:07:54,260 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:54,260 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 103 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:07:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-04-05 03:07:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-04-05 03:07:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 03:07:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2022-04-05 03:07:54,265 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 34 [2022-04-05 03:07:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:54,265 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2022-04-05 03:07:54,265 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 03:07:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2022-04-05 03:07:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-05 03:07:54,266 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:54,266 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:54,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 03:07:54,481 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:54,482 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1762200840, now seen corresponding path program 1 times [2022-04-05 03:07:54,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:54,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854152592] [2022-04-05 03:07:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:54,490 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:07:54,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237860891] [2022-04-05 03:07:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:54,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:54,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:07:54,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:07:54,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 03:07:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:54,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 03:07:54,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:07:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 03:07:54,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:07:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-04-05 03:07:54,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:54,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854152592] [2022-04-05 03:07:54,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:07:54,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237860891] [2022-04-05 03:07:54,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237860891] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 03:07:54,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 03:07:54,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-05 03:07:54,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585939529] [2022-04-05 03:07:54,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:07:54,745 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:07:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:07:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-05 03:07:54,746 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 03:07:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:54,787 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2022-04-05 03:07:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:07:54,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-04-05 03:07:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:54,789 INFO L225 Difference]: With dead ends: 67 [2022-04-05 03:07:54,789 INFO L226 Difference]: Without dead ends: 67 [2022-04-05 03:07:54,789 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-05 03:07:54,790 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:54,790 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:07:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-04-05 03:07:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2022-04-05 03:07:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 03:07:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2022-04-05 03:07:54,795 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 44 [2022-04-05 03:07:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:54,795 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2022-04-05 03:07:54,795 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 03:07:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2022-04-05 03:07:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 03:07:54,796 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:54,796 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:54,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 03:07:55,012 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:55,013 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:55,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1382136022, now seen corresponding path program 1 times [2022-04-05 03:07:55,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:55,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130843413] [2022-04-05 03:07:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:55,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:55,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:07:55,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352029829] [2022-04-05 03:07:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:55,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:55,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:07:55,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:07:55,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 03:07:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:55,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-05 03:07:55,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:07:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 03:07:55,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:07:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 03:07:56,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:56,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130843413] [2022-04-05 03:07:56,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:07:56,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352029829] [2022-04-05 03:07:56,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352029829] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:07:56,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:07:56,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-05 03:07:56,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520764569] [2022-04-05 03:07:56,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:07:56,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 03:07:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:56,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 03:07:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-05 03:07:56,090 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 7 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 03:07:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:58,832 INFO L93 Difference]: Finished difference Result 131 states and 176 transitions. [2022-04-05 03:07:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 03:07:58,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 7 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 64 [2022-04-05 03:07:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:58,835 INFO L225 Difference]: With dead ends: 131 [2022-04-05 03:07:58,835 INFO L226 Difference]: Without dead ends: 125 [2022-04-05 03:07:58,836 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-05 03:07:58,837 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:58,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 198 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 03:07:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-04-05 03:07:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2022-04-05 03:07:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 03:07:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2022-04-05 03:07:58,850 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 64 [2022-04-05 03:07:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:58,850 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2022-04-05 03:07:58,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 7 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 03:07:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2022-04-05 03:07:58,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-05 03:07:58,852 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:58,852 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:58,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 03:07:59,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:59,085 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:07:59,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:07:59,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1085940318, now seen corresponding path program 1 times [2022-04-05 03:07:59,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:07:59,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213607294] [2022-04-05 03:07:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:59,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:07:59,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:07:59,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014520869] [2022-04-05 03:07:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:07:59,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:07:59,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:07:59,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:07:59,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 03:07:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:07:59,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-05 03:07:59,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:07:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-04-05 03:07:59,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:07:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-04-05 03:07:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:07:59,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213607294] [2022-04-05 03:07:59,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:07:59,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014520869] [2022-04-05 03:07:59,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014520869] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:07:59,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:07:59,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2022-04-05 03:07:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044582947] [2022-04-05 03:07:59,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:07:59,669 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 03:07:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:07:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 03:07:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-05 03:07:59,671 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 15 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-04-05 03:07:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:07:59,910 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2022-04-05 03:07:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 03:07:59,911 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) Word has length 75 [2022-04-05 03:07:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:07:59,912 INFO L225 Difference]: With dead ends: 134 [2022-04-05 03:07:59,912 INFO L226 Difference]: Without dead ends: 115 [2022-04-05 03:07:59,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-04-05 03:07:59,912 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 03:07:59,912 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 122 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 03:07:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-04-05 03:07:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2022-04-05 03:07:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 64 states have internal predecessors, (71), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 03:07:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2022-04-05 03:07:59,919 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 75 [2022-04-05 03:07:59,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:07:59,919 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-04-05 03:07:59,919 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-04-05 03:07:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2022-04-05 03:07:59,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-04-05 03:07:59,920 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:07:59,920 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:07:59,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 03:08:00,131 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:00,131 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:08:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:08:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1480109990, now seen corresponding path program 1 times [2022-04-05 03:08:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:08:00,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170293964] [2022-04-05 03:08:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:00,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:08:00,142 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:08:00,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116524193] [2022-04-05 03:08:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:00,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:00,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:08:00,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:08:00,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 03:08:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:08:00,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-05 03:08:00,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:08:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-04-05 03:08:00,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:08:00,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:08:00,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170293964] [2022-04-05 03:08:00,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:08:00,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116524193] [2022-04-05 03:08:00,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116524193] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:08:00,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:08:00,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 03:08:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136563816] [2022-04-05 03:08:00,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:08:00,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:08:00,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:08:00,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:08:00,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-05 03:08:00,343 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-05 03:08:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:08:00,379 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2022-04-05 03:08:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:08:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 84 [2022-04-05 03:08:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:08:00,380 INFO L225 Difference]: With dead ends: 103 [2022-04-05 03:08:00,380 INFO L226 Difference]: Without dead ends: 103 [2022-04-05 03:08:00,381 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-05 03:08:00,381 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:08:00,381 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 82 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:08:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-04-05 03:08:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-04-05 03:08:00,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 64 states have internal predecessors, (72), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 03:08:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2022-04-05 03:08:00,387 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 84 [2022-04-05 03:08:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:08:00,387 INFO L478 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2022-04-05 03:08:00,387 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-05 03:08:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2022-04-05 03:08:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-04-05 03:08:00,388 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:08:00,388 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:08:00,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 03:08:00,602 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:00,602 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:08:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:08:00,604 INFO L85 PathProgramCache]: Analyzing trace with hash -233495842, now seen corresponding path program 2 times [2022-04-05 03:08:00,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:08:00,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921838829] [2022-04-05 03:08:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:00,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:08:00,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:08:00,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584570002] [2022-04-05 03:08:00,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 03:08:00,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:00,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:08:00,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:08:00,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-05 03:08:00,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 03:08:00,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 03:08:00,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 39 conjunts are in the unsatisfiable core [2022-04-05 03:08:00,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:08:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 03:08:01,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:08:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 03:08:22,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:08:22,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921838829] [2022-04-05 03:08:22,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:08:22,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584570002] [2022-04-05 03:08:22,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584570002] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:08:22,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:08:22,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-05 03:08:22,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715567079] [2022-04-05 03:08:22,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:08:22,129 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 03:08:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:08:22,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 03:08:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=179, Unknown=1, NotChecked=0, Total=240 [2022-04-05 03:08:22,130 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 11 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-04-05 03:08:34,341 WARN L232 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 192 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 03:08:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:08:43,521 INFO L93 Difference]: Finished difference Result 193 states and 258 transitions. [2022-04-05 03:08:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 03:08:43,522 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 11 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 94 [2022-04-05 03:08:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:08:43,523 INFO L225 Difference]: With dead ends: 193 [2022-04-05 03:08:43,524 INFO L226 Difference]: Without dead ends: 177 [2022-04-05 03:08:43,524 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=114, Invalid=305, Unknown=1, NotChecked=0, Total=420 [2022-04-05 03:08:43,524 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 90 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-04-05 03:08:43,525 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 320 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-04-05 03:08:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-05 03:08:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2022-04-05 03:08:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.21) internal successors, (121), 104 states have internal predecessors, (121), 49 states have call successors, (49), 17 states have call predecessors, (49), 16 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 03:08:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2022-04-05 03:08:43,540 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 94 [2022-04-05 03:08:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:08:43,540 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2022-04-05 03:08:43,541 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 11 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-04-05 03:08:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2022-04-05 03:08:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-04-05 03:08:43,542 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:08:43,542 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:08:43,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-05 03:08:43,742 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:43,743 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:08:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:08:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 411415430, now seen corresponding path program 1 times [2022-04-05 03:08:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:08:43,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017770113] [2022-04-05 03:08:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:43,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:08:43,750 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:08:43,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200793089] [2022-04-05 03:08:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:43,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:08:43,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:08:43,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-05 03:08:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:08:43,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 03:08:43,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:08:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 03:08:44,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:08:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 03:08:44,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:08:44,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017770113] [2022-04-05 03:08:44,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:08:44,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200793089] [2022-04-05 03:08:44,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200793089] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:08:44,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:08:44,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-05 03:08:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845816669] [2022-04-05 03:08:44,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:08:44,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 03:08:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:08:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 03:08:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-04-05 03:08:44,735 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 7 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-04-05 03:08:44,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:08:44,959 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2022-04-05 03:08:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 03:08:44,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 7 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 110 [2022-04-05 03:08:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:08:44,963 INFO L225 Difference]: With dead ends: 180 [2022-04-05 03:08:44,963 INFO L226 Difference]: Without dead ends: 174 [2022-04-05 03:08:44,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-04-05 03:08:44,964 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 7 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 03:08:44,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 325 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 03:08:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-04-05 03:08:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-04-05 03:08:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 17 states have call predecessors, (53), 16 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 03:08:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-04-05 03:08:44,974 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 110 [2022-04-05 03:08:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:08:44,974 INFO L478 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-04-05 03:08:44,974 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 7 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-04-05 03:08:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-04-05 03:08:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-04-05 03:08:44,989 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:08:44,990 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:08:45,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-05 03:08:45,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 03:08:45,208 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:08:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:08:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash 564418017, now seen corresponding path program 2 times [2022-04-05 03:08:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:08:45,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965590835] [2022-04-05 03:08:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:08:45,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:08:45,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142839079] [2022-04-05 03:08:45,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 03:08:45,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:45,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:08:45,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:08:45,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 03:08:45,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 03:08:45,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 03:08:45,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 03:08:45,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:08:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 102 proven. 42 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-04-05 03:08:45,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:08:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 03:08:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:08:45,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965590835] [2022-04-05 03:08:45,789 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:08:45,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142839079] [2022-04-05 03:08:45,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142839079] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:08:45,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:08:45,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-04-05 03:08:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560492688] [2022-04-05 03:08:45,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:08:45,790 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 03:08:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:08:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 03:08:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-05 03:08:45,790 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 9 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2022-04-05 03:08:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:08:45,854 INFO L93 Difference]: Finished difference Result 159 states and 200 transitions. [2022-04-05 03:08:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:08:45,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 9 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 123 [2022-04-05 03:08:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:08:45,855 INFO L225 Difference]: With dead ends: 159 [2022-04-05 03:08:45,855 INFO L226 Difference]: Without dead ends: 136 [2022-04-05 03:08:45,855 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-05 03:08:45,855 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 4 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:08:45,856 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 186 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:08:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-04-05 03:08:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-04-05 03:08:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 86 states have internal predecessors, (95), 37 states have call successors, (37), 17 states have call predecessors, (37), 16 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-05 03:08:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2022-04-05 03:08:45,861 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 123 [2022-04-05 03:08:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:08:45,861 INFO L478 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2022-04-05 03:08:45,861 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 9 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2022-04-05 03:08:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2022-04-05 03:08:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-04-05 03:08:45,862 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:08:45,862 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:08:45,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-05 03:08:46,079 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:46,081 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:08:46,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:08:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1567600662, now seen corresponding path program 3 times [2022-04-05 03:08:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:08:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644210782] [2022-04-05 03:08:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:08:46,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:08:46,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202975371] [2022-04-05 03:08:46,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 03:08:46,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:46,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:08:46,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:08:46,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-05 03:08:46,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 03:08:46,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 03:08:46,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjunts are in the unsatisfiable core [2022-04-05 03:08:46,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:08:46,392 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 03:08:46,420 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 03:08:46,443 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 03:08:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-04-05 03:08:46,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:08:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:08:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644210782] [2022-04-05 03:08:55,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:08:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202975371] [2022-04-05 03:08:55,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202975371] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 03:08:55,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 03:08:55,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-05 03:08:55,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073918434] [2022-04-05 03:08:55,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 03:08:55,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 03:08:55,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:08:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 03:08:55,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-04-05 03:08:55,850 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 03:08:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:08:55,918 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2022-04-05 03:08:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 03:08:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 124 [2022-04-05 03:08:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:08:55,919 INFO L225 Difference]: With dead ends: 140 [2022-04-05 03:08:55,919 INFO L226 Difference]: Without dead ends: 138 [2022-04-05 03:08:55,920 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-04-05 03:08:55,921 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:08:55,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 98 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:08:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-04-05 03:08:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 118. [2022-04-05 03:08:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 29 states have call successors, (29), 17 states have call predecessors, (29), 15 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 03:08:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2022-04-05 03:08:55,926 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 124 [2022-04-05 03:08:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:08:55,926 INFO L478 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2022-04-05 03:08:55,926 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 03:08:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2022-04-05 03:08:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-04-05 03:08:55,927 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:08:55,927 INFO L499 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:08:55,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-04-05 03:08:56,141 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-05 03:08:56,141 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:08:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:08:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1333998901, now seen corresponding path program 3 times [2022-04-05 03:08:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:08:56,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8948872] [2022-04-05 03:08:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:08:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:08:56,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:08:56,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591048316] [2022-04-05 03:08:56,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 03:08:56,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:08:56,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:08:56,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:08:56,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-05 03:08:56,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 03:08:56,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 03:08:56,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 03:08:56,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:08:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-04-05 03:08:56,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:08:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-04-05 03:08:56,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:08:56,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8948872] [2022-04-05 03:08:56,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:08:56,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591048316] [2022-04-05 03:08:56,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591048316] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:08:56,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:08:56,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-04-05 03:08:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282072217] [2022-04-05 03:08:56,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:08:56,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 03:08:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:08:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 03:08:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-05 03:08:56,583 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-04-05 03:08:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:08:56,669 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2022-04-05 03:08:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 03:08:56,669 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2022-04-05 03:08:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:08:56,670 INFO L225 Difference]: With dead ends: 124 [2022-04-05 03:08:56,670 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 03:08:56,670 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-04-05 03:08:56,670 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 03:08:56,671 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 133 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 03:08:56,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 03:08:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 03:08:56,671 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) [2022-04-05 03:08:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 03:08:56,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2022-04-05 03:08:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:08:56,671 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 03:08:56,671 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-04-05 03:08:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 03:08:56,671 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 03:08:56,676 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 03:08:56,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-05 03:08:56,887 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-05 03:08:56,890 INFO L719 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:08:56,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 03:08:56,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 03:08:56 BasicIcfg [2022-04-05 03:08:56,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 03:08:56,893 INFO L158 Benchmark]: Toolchain (without parser) took 65064.69ms. Allocated memory was 218.1MB in the beginning and 451.9MB in the end (delta: 233.8MB). Free memory was 162.4MB in the beginning and 351.8MB in the end (delta: -189.4MB). Peak memory consumption was 44.5MB. Max. memory is 8.0GB. [2022-04-05 03:08:56,893 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 178.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 03:08:56,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.50ms. Allocated memory was 218.1MB in the beginning and 313.5MB in the end (delta: 95.4MB). Free memory was 162.2MB in the beginning and 284.7MB in the end (delta: -122.5MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-04-05 03:08:56,893 INFO L158 Benchmark]: Boogie Preprocessor took 35.65ms. Allocated memory is still 313.5MB. Free memory was 284.7MB in the beginning and 283.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 03:08:56,894 INFO L158 Benchmark]: RCFGBuilder took 337.64ms. Allocated memory is still 313.5MB. Free memory was 283.1MB in the beginning and 272.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 03:08:56,894 INFO L158 Benchmark]: IcfgTransformer took 14.41ms. Allocated memory is still 313.5MB. Free memory was 272.1MB in the beginning and 271.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 03:08:56,894 INFO L158 Benchmark]: TraceAbstraction took 64439.88ms. Allocated memory was 313.5MB in the beginning and 451.9MB in the end (delta: 138.4MB). Free memory was 270.5MB in the beginning and 351.8MB in the end (delta: -81.3MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2022-04-05 03:08:56,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 178.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.50ms. Allocated memory was 218.1MB in the beginning and 313.5MB in the end (delta: 95.4MB). Free memory was 162.2MB in the beginning and 284.7MB in the end (delta: -122.5MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.65ms. Allocated memory is still 313.5MB. Free memory was 284.7MB in the beginning and 283.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 337.64ms. Allocated memory is still 313.5MB. Free memory was 283.1MB in the beginning and 272.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 14.41ms. Allocated memory is still 313.5MB. Free memory was 272.1MB in the beginning and 271.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 64439.88ms. Allocated memory was 313.5MB in the beginning and 451.9MB in the end (delta: 138.4MB). Free memory was 270.5MB in the beginning and 351.8MB in the end (delta: -81.3MB). Peak memory consumption was 57.7MB. 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: 17]: 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 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.4s, OverallIterations: 14, TraceHistogramMax: 20, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 410 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 1935 SdHoareTripleChecker+Invalid, 7.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1367 mSDsCounter, 447 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2407 IncrementalHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 447 mSolverCounterUnsat, 568 mSDtfsCounter, 2407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1452 SyntacticMatches, 22 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 23.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=11, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 75 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 35.3s InterpolantComputationTime, 962 NumberOfCodeBlocks, 840 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1578 ConstructedInterpolants, 0 QuantifiedInterpolants, 15993 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1954 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 6338/6540 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! [2022-04-05 03:08:56,933 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...