/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/egcd-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 02:21:19,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 02:21:19,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 02:21:19,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 02:21:19,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 02:21:19,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 02:21:19,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 02:21:19,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 02:21:19,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 02:21:19,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 02:21:19,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 02:21:19,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 02:21:19,715 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 02:21:19,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 02:21:19,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 02:21:19,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 02:21:19,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 02:21:19,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 02:21:19,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 02:21:19,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 02:21:19,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 02:21:19,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 02:21:19,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 02:21:19,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 02:21:19,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 02:21:19,741 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 02:21:19,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 02:21:19,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 02:21:19,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 02:21:19,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 02:21:19,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 02:21:19,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 02:21:19,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 02:21:19,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:21:19,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 02:21:19,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 02:21:19,744 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 02:21:19,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 02:21:19,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 02:21:20,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 02:21:20,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 02:21:20,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 02:21:20,016 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 02:21:20,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound10.c [2022-04-05 02:21:20,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45388c707/5dc8c2effe134ababd193b3b6eeb7294/FLAGaed92a815 [2022-04-05 02:21:20,451 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 02:21:20,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound10.c [2022-04-05 02:21:20,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45388c707/5dc8c2effe134ababd193b3b6eeb7294/FLAGaed92a815 [2022-04-05 02:21:20,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45388c707/5dc8c2effe134ababd193b3b6eeb7294 [2022-04-05 02:21:20,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 02:21:20,872 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 02:21:20,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 02:21:20,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 02:21:20,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 02:21:20,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:21:20" (1/1) ... [2022-04-05 02:21:20,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ca3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:20, skipping insertion in model container [2022-04-05 02:21:20,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:21:20" (1/1) ... [2022-04-05 02:21:20,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 02:21:20,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 02:21:21,044 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/egcd-ll_valuebound10.c[489,502] [2022-04-05 02:21:21,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:21:21,064 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 02:21:21,072 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/egcd-ll_valuebound10.c[489,502] [2022-04-05 02:21:21,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:21:21,109 INFO L208 MainTranslator]: Completed translation [2022-04-05 02:21:21,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21 WrapperNode [2022-04-05 02:21:21,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 02:21:21,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 02:21:21,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 02:21:21,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 02:21:21,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 02:21:21,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 02:21:21,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 02:21:21,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 02:21:21,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:21:21,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:21,172 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 02:21:21,181 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 02:21:21,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 02:21:21,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 02:21:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 02:21:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 02:21:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 02:21:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 02:21:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 02:21:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 02:21:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 02:21:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 02:21:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 02:21:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 02:21:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 02:21:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 02:21:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 02:21:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 02:21:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 02:21:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 02:21:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 02:21:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 02:21:21,278 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 02:21:21,280 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 02:21:21,461 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 02:21:21,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 02:21:21,468 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 02:21:21,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:21 BoogieIcfgContainer [2022-04-05 02:21:21,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 02:21:21,471 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 02:21:21,471 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 02:21:21,472 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 02:21:21,476 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:21" (1/1) ... [2022-04-05 02:21:21,478 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 02:21:21,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:21:21 BasicIcfg [2022-04-05 02:21:21,498 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 02:21:21,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 02:21:21,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 02:21:21,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 02:21:21,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:21:20" (1/4) ... [2022-04-05 02:21:21,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41525a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:21:21, skipping insertion in model container [2022-04-05 02:21:21,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:21" (2/4) ... [2022-04-05 02:21:21,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41525a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:21:21, skipping insertion in model container [2022-04-05 02:21:21,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:21" (3/4) ... [2022-04-05 02:21:21,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41525a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:21:21, skipping insertion in model container [2022-04-05 02:21:21,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:21:21" (4/4) ... [2022-04-05 02:21:21,511 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound10.cJordan [2022-04-05 02:21:21,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 02:21:21,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 02:21:21,547 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 02:21:21,552 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 02:21:21,553 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 02:21:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 02:21:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:21:21,574 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:21,575 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:21,575 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2022-04-05 02:21:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:21,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417326708] [2022-04-05 02:21:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:21,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 02:21:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:21,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 02:21:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 02:21:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:21,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 02:21:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:21,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 02:21:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:21:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:21,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417326708] [2022-04-05 02:21:21,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417326708] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:21,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:21,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 02:21:21,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300289217] [2022-04-05 02:21:21,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:21,826 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 02:21:21,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 02:21:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 02:21:21,848 INFO L87 Difference]: Start difference. First operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:21:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:21,931 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-04-05 02:21:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 02:21:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-05 02:21:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:21,938 INFO L225 Difference]: With dead ends: 37 [2022-04-05 02:21:21,938 INFO L226 Difference]: Without dead ends: 32 [2022-04-05 02:21:21,939 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 02:21:21,942 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:21,943 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-05 02:21:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-05 02:21:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 02:21:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-04-05 02:21:21,970 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2022-04-05 02:21:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:21,970 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-04-05 02:21:21,971 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:21:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-04-05 02:21:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:21:21,972 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:21,972 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:21,973 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 02:21:21,973 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2022-04-05 02:21:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:21,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474236957] [2022-04-05 02:21:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:21,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:21,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681309855] [2022-04-05 02:21:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:21,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:21,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:21,992 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 02:21:21,993 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 02:21:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:22,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:21:22,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:21:22,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:22,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474236957] [2022-04-05 02:21:22,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:22,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681309855] [2022-04-05 02:21:22,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681309855] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:22,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:22,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:21:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850739365] [2022-04-05 02:21:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:22,226 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:22,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:21:22,226 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:21:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:22,306 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2022-04-05 02:21:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:22,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-05 02:21:22,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:22,309 INFO L225 Difference]: With dead ends: 46 [2022-04-05 02:21:22,309 INFO L226 Difference]: Without dead ends: 46 [2022-04-05 02:21:22,309 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 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 02:21:22,310 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:22,310 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 143 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-05 02:21:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-04-05 02:21:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 02:21:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-04-05 02:21:22,318 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2022-04-05 02:21:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:22,321 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-04-05 02:21:22,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:21:22,321 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-04-05 02:21:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 02:21:22,322 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:22,323 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 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 02:21:22,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-05 02:21:22,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:22,536 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:22,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2022-04-05 02:21:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:22,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281429295] [2022-04-05 02:21:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:22,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:22,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250271546] [2022-04-05 02:21:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:22,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:22,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:22,560 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 02:21:22,562 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 02:21:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:22,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:21:22,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:21:22,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:22,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281429295] [2022-04-05 02:21:22,736 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:22,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250271546] [2022-04-05 02:21:22,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250271546] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:22,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:22,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:21:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354990001] [2022-04-05 02:21:22,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:22,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:22,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:21:22,753 INFO L87 Difference]: Start difference. First operand 45 states and 62 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:21:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:22,813 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-04-05 02:21:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:22,813 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-04-05 02:21:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:22,816 INFO L225 Difference]: With dead ends: 50 [2022-04-05 02:21:22,816 INFO L226 Difference]: Without dead ends: 50 [2022-04-05 02:21:22,816 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 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 02:21:22,817 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:22,817 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 140 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-05 02:21:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-04-05 02:21:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 02:21:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-04-05 02:21:22,824 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38 [2022-04-05 02:21:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:22,824 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-04-05 02:21:22,824 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:21:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-04-05 02:21:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-05 02:21:22,825 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:22,825 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:22,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-05 02:21:23,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 02:21:23,034 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:23,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2022-04-05 02:21:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:23,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842092453] [2022-04-05 02:21:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:23,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:23,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523063638] [2022-04-05 02:21:23,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:23,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:23,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:23,056 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 02:21:23,057 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 02:21:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:23,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-05 02:21:23,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 02:21:23,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-05 02:21:23,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:23,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842092453] [2022-04-05 02:21:23,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:23,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523063638] [2022-04-05 02:21:23,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523063638] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:21:23,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:21:23,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-05 02:21:23,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668351587] [2022-04-05 02:21:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:23,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:23,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:21:23,454 INFO L87 Difference]: Start difference. First operand 49 states and 65 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:21:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:23,510 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2022-04-05 02:21:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:23,510 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-04-05 02:21:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:23,512 INFO L225 Difference]: With dead ends: 72 [2022-04-05 02:21:23,513 INFO L226 Difference]: Without dead ends: 70 [2022-04-05 02:21:23,513 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:21:23,514 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:23,514 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 137 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-04-05 02:21:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-04-05 02:21:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 02:21:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2022-04-05 02:21:23,522 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43 [2022-04-05 02:21:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:23,523 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2022-04-05 02:21:23,523 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:21:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2022-04-05 02:21:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-05 02:21:23,524 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:23,524 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2022-04-05 02:21:23,545 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 02:21:23,742 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:23,743 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2022-04-05 02:21:23,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:23,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694309139] [2022-04-05 02:21:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:23,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:23,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334375097] [2022-04-05 02:21:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:23,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:23,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:23,766 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 02:21:23,767 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 02:21:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:23,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:21:23,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-05 02:21:23,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:23,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:23,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694309139] [2022-04-05 02:21:23,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:23,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334375097] [2022-04-05 02:21:23,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334375097] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:23,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:23,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:21:23,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224417975] [2022-04-05 02:21:23,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:23,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:23,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:21:23,898 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 02:21:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:23,941 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2022-04-05 02:21:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:23,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 49 [2022-04-05 02:21:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:23,946 INFO L225 Difference]: With dead ends: 74 [2022-04-05 02:21:23,947 INFO L226 Difference]: Without dead ends: 74 [2022-04-05 02:21:23,947 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 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 02:21:23,948 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:23,948 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 139 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-04-05 02:21:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-04-05 02:21:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 02:21:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2022-04-05 02:21:23,966 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49 [2022-04-05 02:21:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:23,966 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2022-04-05 02:21:23,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 02:21:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2022-04-05 02:21:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 02:21:23,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:23,967 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:23,994 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 02:21:24,189 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:24,190 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:24,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times [2022-04-05 02:21:24,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:24,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982770795] [2022-04-05 02:21:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:24,200 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:24,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243286277] [2022-04-05 02:21:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:24,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:24,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:24,202 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 02:21:24,203 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 02:21:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:24,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 02:21:24,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-04-05 02:21:24,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:24,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:24,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982770795] [2022-04-05 02:21:24,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:24,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243286277] [2022-04-05 02:21:24,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243286277] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:24,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:24,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:21:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28549353] [2022-04-05 02:21:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:24,375 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:24,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:24,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:21:24,375 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:21:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:24,407 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2022-04-05 02:21:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-04-05 02:21:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:24,409 INFO L225 Difference]: With dead ends: 82 [2022-04-05 02:21:24,409 INFO L226 Difference]: Without dead ends: 81 [2022-04-05 02:21:24,409 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 1 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 02:21:24,409 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:24,410 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 146 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-05 02:21:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-04-05 02:21:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 02:21:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-04-05 02:21:24,415 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2022-04-05 02:21:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:24,416 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-04-05 02:21:24,416 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:21:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-04-05 02:21:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 02:21:24,417 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:24,417 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 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 02:21:24,434 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 02:21:24,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:24,634 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2022-04-05 02:21:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:24,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815561790] [2022-04-05 02:21:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:24,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:24,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875744439] [2022-04-05 02:21:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:24,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:24,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:24,645 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 02:21:24,647 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 02:21:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:24,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 02:21:24,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-05 02:21:24,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-05 02:21:24,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:24,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815561790] [2022-04-05 02:21:24,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:24,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875744439] [2022-04-05 02:21:24,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875744439] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:24,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:24,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-05 02:21:24,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736799763] [2022-04-05 02:21:24,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:24,921 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 02:21:24,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:24,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 02:21:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:21:24,922 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 02:21:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:25,035 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2022-04-05 02:21:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 02:21:25,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2022-04-05 02:21:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:25,037 INFO L225 Difference]: With dead ends: 86 [2022-04-05 02:21:25,037 INFO L226 Difference]: Without dead ends: 84 [2022-04-05 02:21:25,037 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:21:25,037 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:25,038 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 110 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-05 02:21:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-04-05 02:21:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 02:21:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-04-05 02:21:25,043 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54 [2022-04-05 02:21:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:25,043 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-04-05 02:21:25,044 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 02:21:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-04-05 02:21:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 02:21:25,044 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:25,045 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:25,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-05 02:21:25,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:25,260 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 2 times [2022-04-05 02:21:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:25,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111081559] [2022-04-05 02:21:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:25,274 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:25,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453408653] [2022-04-05 02:21:25,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:21:25,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:25,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:25,292 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 02:21:25,313 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 02:21:25,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:21:25,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:21:25,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-05 02:21:25,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-05 02:21:25,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-05 02:21:25,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:25,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111081559] [2022-04-05 02:21:25,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:25,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453408653] [2022-04-05 02:21:25,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453408653] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:25,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:25,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-04-05 02:21:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537363514] [2022-04-05 02:21:25,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:25,630 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 02:21:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 02:21:25,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-05 02:21:25,631 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-05 02:21:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:26,189 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2022-04-05 02:21:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 02:21:26,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 56 [2022-04-05 02:21:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:26,190 INFO L225 Difference]: With dead ends: 108 [2022-04-05 02:21:26,190 INFO L226 Difference]: Without dead ends: 103 [2022-04-05 02:21:26,190 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:21:26,191 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:26,191 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 139 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 02:21:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-04-05 02:21:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88. [2022-04-05 02:21:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-05 02:21:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2022-04-05 02:21:26,200 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 56 [2022-04-05 02:21:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:26,200 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2022-04-05 02:21:26,201 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-05 02:21:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2022-04-05 02:21:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 02:21:26,202 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:26,202 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 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 02:21:26,224 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 02:21:26,402 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:26,403 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:26,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times [2022-04-05 02:21:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:26,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522781793] [2022-04-05 02:21:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:26,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:26,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923607131] [2022-04-05 02:21:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:26,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:26,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:26,416 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 02:21:26,425 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 02:21:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:26,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-05 02:21:26,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 02:21:26,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-04-05 02:21:26,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:26,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522781793] [2022-04-05 02:21:26,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:26,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923607131] [2022-04-05 02:21:26,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923607131] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:21:26,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:21:26,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-04-05 02:21:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194320432] [2022-04-05 02:21:26,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:26,788 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-05 02:21:26,789 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:21:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:26,822 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2022-04-05 02:21:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:26,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-04-05 02:21:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:26,823 INFO L225 Difference]: With dead ends: 86 [2022-04-05 02:21:26,823 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 02:21:26,823 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:21:26,823 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:26,823 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:21:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 02:21:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 02:21:26,824 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 02:21:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 02:21:26,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-04-05 02:21:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:26,824 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 02:21:26,824 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:21:26,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 02:21:26,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 02:21:26,826 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 02:21:26,847 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 02:21:27,039 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,SelfDestructingSolverStorable8 [2022-04-05 02:21:27,042 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:27,044 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 02:21:27,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:21:27 BasicIcfg [2022-04-05 02:21:27,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 02:21:27,046 INFO L158 Benchmark]: Toolchain (without parser) took 6174.72ms. Allocated memory was 182.5MB in the beginning and 244.3MB in the end (delta: 61.9MB). Free memory was 134.2MB in the beginning and 137.7MB in the end (delta: -3.5MB). Peak memory consumption was 58.4MB. Max. memory is 8.0GB. [2022-04-05 02:21:27,046 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 182.5MB. Free memory was 150.7MB in the beginning and 150.6MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:21:27,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.89ms. Allocated memory is still 182.5MB. Free memory was 134.0MB in the beginning and 158.5MB in the end (delta: -24.5MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-04-05 02:21:27,047 INFO L158 Benchmark]: Boogie Preprocessor took 23.57ms. Allocated memory is still 182.5MB. Free memory was 158.5MB in the beginning and 157.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:21:27,047 INFO L158 Benchmark]: RCFGBuilder took 336.08ms. Allocated memory is still 182.5MB. Free memory was 157.1MB in the beginning and 146.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 02:21:27,047 INFO L158 Benchmark]: IcfgTransformer took 27.07ms. Allocated memory is still 182.5MB. Free memory was 145.9MB in the beginning and 144.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:21:27,047 INFO L158 Benchmark]: TraceAbstraction took 5546.67ms. Allocated memory was 182.5MB in the beginning and 244.3MB in the end (delta: 61.9MB). Free memory was 144.2MB in the beginning and 137.7MB in the end (delta: 6.5MB). Peak memory consumption was 69.4MB. Max. memory is 8.0GB. [2022-04-05 02:21:27,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 182.5MB. Free memory was 150.7MB in the beginning and 150.6MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.89ms. Allocated memory is still 182.5MB. Free memory was 134.0MB in the beginning and 158.5MB in the end (delta: -24.5MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.57ms. Allocated memory is still 182.5MB. Free memory was 158.5MB in the beginning and 157.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 336.08ms. Allocated memory is still 182.5MB. Free memory was 157.1MB in the beginning and 146.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 27.07ms. Allocated memory is still 182.5MB. Free memory was 145.9MB in the beginning and 144.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5546.67ms. Allocated memory was 182.5MB in the beginning and 244.3MB in the end (delta: 61.9MB). Free memory was 144.2MB in the beginning and 137.7MB in the end (delta: 6.5MB). Peak memory consumption was 69.4MB. 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: 13]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 1101 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 743 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 506 IncrementalHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 358 mSDtfsCounter, 506 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 635 GetRequests, 576 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, InterpolantAutomatonStates: 48, 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, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 426 NumberOfCodeBlocks, 426 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 1676 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1087 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 627/666 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 02:21:27,063 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...