/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_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 02:21:29,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 02:21:29,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 02:21:29,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 02:21:30,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 02:21:30,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 02:21:30,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 02:21:30,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 02:21:30,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 02:21:30,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 02:21:30,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 02:21:30,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 02:21:30,021 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 02:21:30,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 02:21:30,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 02:21:30,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 02:21:30,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 02:21:30,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 02:21:30,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 02:21:30,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 02:21:30,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 02:21:30,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 02:21:30,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 02:21:30,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 02:21:30,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 02:21:30,058 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 02:21:30,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 02:21:30,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 02:21:30,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 02:21:30,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 02:21:30,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 02:21:30,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 02:21:30,059 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 02:21:30,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 02:21:30,060 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 02:21:30,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 02:21:30,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 02:21:30,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 02:21:30,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 02:21:30,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 02:21:30,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:21:30,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 02:21:30,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 02:21:30,061 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 02:21:30,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 02:21:30,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 02:21:30,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 02:21:30,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 02:21:30,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 02:21:30,258 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 02:21:30,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-04-05 02:21:30,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2165929/82075668c72743edb2d2847ef8b6886c/FLAG1aff5d803 [2022-04-05 02:21:30,647 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 02:21:30,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-04-05 02:21:30,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2165929/82075668c72743edb2d2847ef8b6886c/FLAG1aff5d803 [2022-04-05 02:21:30,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2165929/82075668c72743edb2d2847ef8b6886c [2022-04-05 02:21:30,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 02:21:30,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 02:21:30,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 02:21:30,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 02:21:30,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 02:21:30,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:30,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714cd6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30, skipping insertion in model container [2022-04-05 02:21:30,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:30,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 02:21:30,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 02:21:30,877 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_valuebound2.c[489,502] [2022-04-05 02:21:30,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:21:30,925 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 02:21:30,937 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_valuebound2.c[489,502] [2022-04-05 02:21:30,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:21:30,975 INFO L208 MainTranslator]: Completed translation [2022-04-05 02:21:30,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30 WrapperNode [2022-04-05 02:21:30,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 02:21:30,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 02:21:30,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 02:21:30,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 02:21:30,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:30,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:30,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:30,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:31,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:31,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:31,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:31,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 02:21:31,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 02:21:31,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 02:21:31,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 02:21:31,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (1/1) ... [2022-04-05 02:21:31,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:21:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:31,065 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 02:21:31,103 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 02:21:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 02:21:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 02:21:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 02:21:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 02:21:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 02:21:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 02:21:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 02:21:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 02:21:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 02:21:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 02:21:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 02:21:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 02:21:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 02:21:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 02:21:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 02:21:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 02:21:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 02:21:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 02:21:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 02:21:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 02:21:31,204 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 02:21:31,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 02:21:31,369 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 02:21:31,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 02:21:31,374 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 02:21:31,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:31 BoogieIcfgContainer [2022-04-05 02:21:31,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 02:21:31,377 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 02:21:31,377 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 02:21:31,378 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 02:21:31,381 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:31" (1/1) ... [2022-04-05 02:21:31,383 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 02:21:31,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:21:31 BasicIcfg [2022-04-05 02:21:31,399 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 02:21:31,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 02:21:31,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 02:21:31,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 02:21:31,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:21:30" (1/4) ... [2022-04-05 02:21:31,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f6c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:21:31, skipping insertion in model container [2022-04-05 02:21:31,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:21:30" (2/4) ... [2022-04-05 02:21:31,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f6c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:21:31, skipping insertion in model container [2022-04-05 02:21:31,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:21:31" (3/4) ... [2022-04-05 02:21:31,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f6c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:21:31, skipping insertion in model container [2022-04-05 02:21:31,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:21:31" (4/4) ... [2022-04-05 02:21:31,409 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.cJordan [2022-04-05 02:21:31,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 02:21:31,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 02:21:31,452 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 02:21:31,459 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 02:21:31,459 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 02:21:31,471 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 02:21:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:21:31,477 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:31,478 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 02:21:31,478 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2022-04-05 02:21:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:31,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843649773] [2022-04-05 02:21:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 02:21:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 02:21:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:31,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 02:21:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 02:21:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 02:21:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:31,728 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 02:21:31,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:31,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843649773] [2022-04-05 02:21:31,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843649773] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:31,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:31,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 02:21:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180613121] [2022-04-05 02:21:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:31,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 02:21:31,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 02:21:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 02:21:31,759 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 02:21:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:31,875 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-04-05 02:21:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 02:21:31,878 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 02:21:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:31,883 INFO L225 Difference]: With dead ends: 37 [2022-04-05 02:21:31,884 INFO L226 Difference]: Without dead ends: 32 [2022-04-05 02:21:31,885 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 02:21:31,891 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 02:21:31,894 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 02:21:31,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-05 02:21:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-05 02:21:31,921 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 02:21:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-04-05 02:21:31,923 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2022-04-05 02:21:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:31,924 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-04-05 02:21:31,924 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 02:21:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-04-05 02:21:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:21:31,925 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:31,925 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 02:21:31,926 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 02:21:31,926 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:31,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2022-04-05 02:21:31,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:31,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929131280] [2022-04-05 02:21:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:31,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:31,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:31,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335808187] [2022-04-05 02:21:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:31,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:31,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:31,956 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 02:21:31,957 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 02:21:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:32,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:21:32,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:32,263 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 02:21:32,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:32,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:32,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929131280] [2022-04-05 02:21:32,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:32,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335808187] [2022-04-05 02:21:32,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335808187] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:32,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:32,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:21:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665241142] [2022-04-05 02:21:32,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:32,268 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:32,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:21:32,269 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 02:21:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:32,378 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2022-04-05 02:21:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:32,379 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 02:21:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:32,380 INFO L225 Difference]: With dead ends: 46 [2022-04-05 02:21:32,380 INFO L226 Difference]: Without dead ends: 46 [2022-04-05 02:21:32,380 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 02:21:32,381 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 02:21:32,382 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 02:21:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-05 02:21:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-04-05 02:21:32,408 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 02:21:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-04-05 02:21:32,410 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2022-04-05 02:21:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:32,410 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-04-05 02:21:32,410 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 02:21:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-04-05 02:21:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 02:21:32,413 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:32,414 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 02:21:32,432 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 02:21:32,629 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 02:21:32,630 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2022-04-05 02:21:32,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190462161] [2022-04-05 02:21:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:32,646 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:32,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303584757] [2022-04-05 02:21:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:32,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:32,648 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 02:21:32,649 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 02:21:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:32,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-05 02:21:32,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:33,007 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 02:21:33,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:33,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:33,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190462161] [2022-04-05 02:21:33,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:33,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303584757] [2022-04-05 02:21:33,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303584757] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:33,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:33,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 02:21:33,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768274240] [2022-04-05 02:21:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:33,010 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 02:21:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 02:21:33,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:21:33,011 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 02:21:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:33,148 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-04-05 02:21:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:21:33,149 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2022-04-05 02:21:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:33,150 INFO L225 Difference]: With dead ends: 50 [2022-04-05 02:21:33,150 INFO L226 Difference]: Without dead ends: 50 [2022-04-05 02:21:33,150 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 02:21:33,151 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:33,152 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 194 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-05 02:21:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-04-05 02:21:33,156 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 02:21:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-04-05 02:21:33,157 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38 [2022-04-05 02:21:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:33,158 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-04-05 02:21:33,158 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 02:21:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-04-05 02:21:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-05 02:21:33,159 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:33,159 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 02:21:33,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 02:21:33,359 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 02:21:33,360 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:33,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2022-04-05 02:21:33,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:33,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817936931] [2022-04-05 02:21:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:33,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:33,372 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:33,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692910977] [2022-04-05 02:21:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:33,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:33,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:33,374 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 02:21:33,375 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 02:21:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:33,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-05 02:21:33,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:33,668 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 02:21:33,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:33,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:33,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817936931] [2022-04-05 02:21:33,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:33,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692910977] [2022-04-05 02:21:33,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692910977] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:33,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:33,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 02:21:33,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308291015] [2022-04-05 02:21:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:33,671 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 02:21:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:33,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 02:21:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:21:33,673 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-05 02:21:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:33,807 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2022-04-05 02:21:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:21:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 43 [2022-04-05 02:21:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:33,813 INFO L225 Difference]: With dead ends: 72 [2022-04-05 02:21:33,813 INFO L226 Difference]: Without dead ends: 70 [2022-04-05 02:21:33,814 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 02:21:33,816 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:33,822 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 168 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-04-05 02:21:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-04-05 02:21:33,832 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 02:21:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2022-04-05 02:21:33,833 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43 [2022-04-05 02:21:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:33,834 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2022-04-05 02:21:33,834 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-04-05 02:21:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2022-04-05 02:21:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-05 02:21:33,835 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:33,835 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 02:21:33,852 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 02:21:34,044 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 02:21:34,046 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2022-04-05 02:21:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050975201] [2022-04-05 02:21:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:34,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:34,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150637403] [2022-04-05 02:21:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:34,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:34,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:34,068 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 02:21:34,081 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 02:21:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:34,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:21:34,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:34,166 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 02:21:34,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:34,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:34,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050975201] [2022-04-05 02:21:34,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:34,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150637403] [2022-04-05 02:21:34,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150637403] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:34,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:34,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:21:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967573627] [2022-04-05 02:21:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:34,167 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:21:34,168 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 02:21:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:34,192 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2022-04-05 02:21:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:34,193 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 02:21:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:34,193 INFO L225 Difference]: With dead ends: 74 [2022-04-05 02:21:34,194 INFO L226 Difference]: Without dead ends: 74 [2022-04-05 02:21:34,194 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 02:21:34,194 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 02:21:34,195 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 02:21:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-04-05 02:21:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-04-05 02:21:34,199 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 02:21:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2022-04-05 02:21:34,201 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49 [2022-04-05 02:21:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:34,201 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2022-04-05 02:21:34,201 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 02:21:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2022-04-05 02:21:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 02:21:34,202 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:34,202 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 02:21:34,225 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 02:21:34,419 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 02:21:34,420 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times [2022-04-05 02:21:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:34,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857039407] [2022-04-05 02:21:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:34,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697047559] [2022-04-05 02:21:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:34,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:34,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:34,439 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 02:21:34,441 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 02:21:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:34,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 02:21:34,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:34,579 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 02:21:34,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:21:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:34,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857039407] [2022-04-05 02:21:34,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:34,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697047559] [2022-04-05 02:21:34,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697047559] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:21:34,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:21:34,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:21:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381938530] [2022-04-05 02:21:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:21:34,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:21:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:21:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:21:34,581 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 02:21:34,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:34,609 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2022-04-05 02:21:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:21:34,609 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 02:21:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:34,610 INFO L225 Difference]: With dead ends: 82 [2022-04-05 02:21:34,610 INFO L226 Difference]: Without dead ends: 81 [2022-04-05 02:21:34,610 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 02:21:34,611 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 02:21:34,611 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 02:21:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-05 02:21:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-04-05 02:21:34,616 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 02:21:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-04-05 02:21:34,617 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2022-04-05 02:21:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:34,617 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-04-05 02:21:34,617 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 02:21:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-04-05 02:21:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 02:21:34,618 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:34,618 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 02:21:34,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-04-05 02:21:34,842 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 02:21:34,842 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2022-04-05 02:21:34,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:34,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984115511] [2022-04-05 02:21:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:34,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:34,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915802744] [2022-04-05 02:21:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:34,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:34,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:34,856 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 02:21:34,857 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 02:21:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:34,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 02:21:34,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:35,022 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 02:21:35,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:35,200 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 02:21:35,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:35,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984115511] [2022-04-05 02:21:35,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:35,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915802744] [2022-04-05 02:21:35,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915802744] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:35,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:35,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-05 02:21:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47995090] [2022-04-05 02:21:35,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:35,206 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 02:21:35,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:35,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 02:21:35,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:21:35,207 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 02:21:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:35,352 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2022-04-05 02:21:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 02:21:35,355 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 02:21:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:35,356 INFO L225 Difference]: With dead ends: 86 [2022-04-05 02:21:35,356 INFO L226 Difference]: Without dead ends: 84 [2022-04-05 02:21:35,357 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 02:21:35,357 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:35,358 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 149 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-05 02:21:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-04-05 02:21:35,363 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 02:21:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-04-05 02:21:35,364 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54 [2022-04-05 02:21:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:35,365 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-04-05 02:21:35,365 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 02:21:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-04-05 02:21:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 02:21:35,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:35,366 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 02:21:35,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 02:21:35,589 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 02:21:35,590 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 2 times [2022-04-05 02:21:35,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:35,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324949446] [2022-04-05 02:21:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:35,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:35,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103322929] [2022-04-05 02:21:35,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:21:35,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:35,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:35,616 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 02:21:35,631 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 02:21:35,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:21:35,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:21:35,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 41 conjunts are in the unsatisfiable core [2022-04-05 02:21:35,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-04-05 02:21:35,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-05 02:21:36,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:36,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324949446] [2022-04-05 02:21:36,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:36,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103322929] [2022-04-05 02:21:36,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103322929] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:36,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:36,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2022-04-05 02:21:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196292951] [2022-04-05 02:21:36,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:36,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 02:21:36,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:36,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 02:21:36,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-04-05 02:21:36,202 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-04-05 02:21:36,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:36,787 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2022-04-05 02:21:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 02:21:36,787 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 56 [2022-04-05 02:21:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:36,788 INFO L225 Difference]: With dead ends: 117 [2022-04-05 02:21:36,788 INFO L226 Difference]: Without dead ends: 117 [2022-04-05 02:21:36,789 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-04-05 02:21:36,789 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:36,789 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 137 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 02:21:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-04-05 02:21:36,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 96. [2022-04-05 02:21:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 58 states have internal predecessors, (62), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 02:21:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2022-04-05 02:21:36,796 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 56 [2022-04-05 02:21:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:36,796 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2022-04-05 02:21:36,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-04-05 02:21:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2022-04-05 02:21:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 02:21:36,797 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:36,797 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:36,827 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 02:21:37,018 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 02:21:37,019 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1746772058, now seen corresponding path program 1 times [2022-04-05 02:21:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:37,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650053935] [2022-04-05 02:21:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:37,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:37,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943566752] [2022-04-05 02:21:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:37,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:37,029 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 02:21:37,030 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 02:21:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:37,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-05 02:21:37,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-04-05 02:21:37,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-04-05 02:21:37,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:37,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650053935] [2022-04-05 02:21:37,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:37,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943566752] [2022-04-05 02:21:37,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943566752] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:37,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:37,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2022-04-05 02:21:37,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737098113] [2022-04-05 02:21:37,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:37,549 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 02:21:37,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:37,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 02:21:37,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-04-05 02:21:37,549 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-05 02:21:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:38,233 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2022-04-05 02:21:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 02:21:38,234 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 61 [2022-04-05 02:21:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:38,235 INFO L225 Difference]: With dead ends: 131 [2022-04-05 02:21:38,235 INFO L226 Difference]: Without dead ends: 122 [2022-04-05 02:21:38,235 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-04-05 02:21:38,236 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:38,236 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 153 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 02:21:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-04-05 02:21:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2022-04-05 02:21:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 68 states have internal predecessors, (71), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 02:21:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2022-04-05 02:21:38,242 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 61 [2022-04-05 02:21:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:38,244 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2022-04-05 02:21:38,244 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-05 02:21:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2022-04-05 02:21:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 02:21:38,246 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:38,246 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 02:21:38,268 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 02:21:38,446 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 02:21:38,447 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:38,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:38,447 INFO L85 PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times [2022-04-05 02:21:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:38,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525188590] [2022-04-05 02:21:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:38,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:38,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568754957] [2022-04-05 02:21:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:38,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:38,460 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:21:38,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 02:21:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:21:38,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 02:21:38,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-05 02:21:38,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-05 02:21:38,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525188590] [2022-04-05 02:21:38,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568754957] [2022-04-05 02:21:38,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568754957] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:38,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:38,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-04-05 02:21:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257353416] [2022-04-05 02:21:38,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:38,803 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 02:21:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 02:21:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:21:38,804 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-04-05 02:21:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:38,934 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2022-04-05 02:21:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 02:21:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 69 [2022-04-05 02:21:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:38,935 INFO L225 Difference]: With dead ends: 100 [2022-04-05 02:21:38,935 INFO L226 Difference]: Without dead ends: 86 [2022-04-05 02:21:38,936 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-04-05 02:21:38,936 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:38,937 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 146 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-04-05 02:21:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-04-05 02:21:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 54 states have internal predecessors, (55), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 02:21:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2022-04-05 02:21:38,941 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 69 [2022-04-05 02:21:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:38,942 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2022-04-05 02:21:38,942 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-04-05 02:21:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2022-04-05 02:21:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 02:21:38,943 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:21:38,943 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 02:21:38,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-05 02:21:39,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 02:21:39,159 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:21:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:21:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -392102192, now seen corresponding path program 2 times [2022-04-05 02:21:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:21:39,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999794738] [2022-04-05 02:21:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:21:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:21:39,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:21:39,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504282634] [2022-04-05 02:21:39,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:21:39,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:21:39,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:21:39,169 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:21:39,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-05 02:21:39,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:21:39,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:21:39,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 02:21:39,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:21:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-05 02:21:39,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:21:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-05 02:21:39,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:21:39,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999794738] [2022-04-05 02:21:39,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:21:39,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504282634] [2022-04-05 02:21:39,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504282634] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:21:39,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:21:39,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-04-05 02:21:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293043835] [2022-04-05 02:21:39,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:21:39,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 02:21:39,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:21:39,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 02:21:39,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:21:39,576 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-04-05 02:21:39,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:21:39,672 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2022-04-05 02:21:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 02:21:39,673 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 69 [2022-04-05 02:21:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:21:39,674 INFO L225 Difference]: With dead ends: 59 [2022-04-05 02:21:39,674 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 02:21:39,674 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-04-05 02:21:39,675 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:21:39,675 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:21:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 02:21:39,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 02:21:39,676 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 02:21:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 02:21:39,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-04-05 02:21:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:21:39,676 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 02:21:39,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-04-05 02:21:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 02:21:39,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 02:21:39,679 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 02:21:39,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-05 02:21:39,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 02:21:39,906 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:21:39,907 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 02:21:39,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:21:39 BasicIcfg [2022-04-05 02:21:39,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 02:21:39,909 INFO L158 Benchmark]: Toolchain (without parser) took 9243.19ms. Allocated memory was 183.5MB in the beginning and 329.3MB in the end (delta: 145.8MB). Free memory was 127.4MB in the beginning and 290.0MB in the end (delta: -162.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:21:39,909 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:21:39,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.54ms. Allocated memory was 183.5MB in the beginning and 273.7MB in the end (delta: 90.2MB). Free memory was 127.3MB in the beginning and 247.6MB in the end (delta: -120.3MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2022-04-05 02:21:39,909 INFO L158 Benchmark]: Boogie Preprocessor took 49.61ms. Allocated memory is still 273.7MB. Free memory was 247.6MB in the beginning and 246.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:21:39,910 INFO L158 Benchmark]: RCFGBuilder took 347.35ms. Allocated memory is still 273.7MB. Free memory was 246.3MB in the beginning and 235.4MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 02:21:39,910 INFO L158 Benchmark]: IcfgTransformer took 21.73ms. Allocated memory is still 273.7MB. Free memory was 235.0MB in the beginning and 233.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:21:39,910 INFO L158 Benchmark]: TraceAbstraction took 8508.58ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 233.3MB in the beginning and 290.0MB in the end (delta: -56.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:21:39,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.54ms. Allocated memory was 183.5MB in the beginning and 273.7MB in the end (delta: 90.2MB). Free memory was 127.3MB in the beginning and 247.6MB in the end (delta: -120.3MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.61ms. Allocated memory is still 273.7MB. Free memory was 247.6MB in the beginning and 246.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 347.35ms. Allocated memory is still 273.7MB. Free memory was 246.3MB in the beginning and 235.4MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 21.73ms. Allocated memory is still 273.7MB. Free memory was 235.0MB in the beginning and 233.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 8508.58ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 233.3MB in the beginning and 290.0MB in the end (delta: -56.7MB). There was no memory consumed. 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: 8.5s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 1544 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1149 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1725 IncrementalHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 395 mSDtfsCounter, 1725 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 869 GetRequests, 750 SyntacticMatches, 6 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=9, InterpolantAutomatonStates: 95, 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, 11 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 849 ConstructedInterpolants, 0 QuantifiedInterpolants, 2635 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1423 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 908/1002 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 02:21:39,925 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...