/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/egcd2-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 02:21:59,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 02:21:59,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 02:21:59,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 02:21:59,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 02:21:59,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 02:21:59,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 02:21:59,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 02:21:59,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 02:21:59,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 02:21:59,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 02:21:59,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 02:21:59,896 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 02:21:59,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 02:21:59,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 02:21:59,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 02:21:59,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 02:21:59,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 02:21:59,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 02:21:59,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 02:21:59,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 02:21:59,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 02:21:59,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 02:21:59,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 02:21:59,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 02:21:59,949 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 02:21:59,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 02:21:59,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 02:21:59,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 02:21:59,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 02:21:59,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 02:21:59,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 02:21:59,951 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 02:21:59,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 02:21:59,951 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 02:21:59,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 02:21:59,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 02:21:59,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 02:21:59,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 02:21:59,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 02:21:59,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:21:59,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 02:21:59,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 02:21:59,953 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 02:21:59,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 02:22:00,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 02:22:00,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 02:22:00,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 02:22:00,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 02:22:00,193 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 02:22:00,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2022-04-05 02:22:00,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6932acf4/ce1f432642a84ad4ac430101a5248da5/FLAG95776eb26 [2022-04-05 02:22:00,635 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 02:22:00,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2022-04-05 02:22:00,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6932acf4/ce1f432642a84ad4ac430101a5248da5/FLAG95776eb26 [2022-04-05 02:22:00,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6932acf4/ce1f432642a84ad4ac430101a5248da5 [2022-04-05 02:22:00,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 02:22:00,655 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 02:22:00,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 02:22:00,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 02:22:00,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 02:22:00,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb49e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00, skipping insertion in model container [2022-04-05 02:22:00,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 02:22:00,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 02:22:00,822 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/egcd2-ll_unwindbound20.c[490,503] [2022-04-05 02:22:00,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:22:00,849 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 02:22:00,858 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/egcd2-ll_unwindbound20.c[490,503] [2022-04-05 02:22:00,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:22:00,877 INFO L208 MainTranslator]: Completed translation [2022-04-05 02:22:00,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00 WrapperNode [2022-04-05 02:22:00,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 02:22:00,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 02:22:00,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 02:22:00,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 02:22:00,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 02:22:00,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 02:22:00,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 02:22:00,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 02:22:00,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (1/1) ... [2022-04-05 02:22:00,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:22:00,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:00,940 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 02:22:00,942 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 02:22:00,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 02:22:00,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 02:22:00,975 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 02:22:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 02:22:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 02:22:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 02:22:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 02:22:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 02:22:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 02:22:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 02:22:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 02:22:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 02:22:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 02:22:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 02:22:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 02:22:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 02:22:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 02:22:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 02:22:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 02:22:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 02:22:01,044 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 02:22:01,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 02:22:01,238 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 02:22:01,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 02:22:01,245 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 02:22:01,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:22:01 BoogieIcfgContainer [2022-04-05 02:22:01,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 02:22:01,247 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 02:22:01,247 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 02:22:01,252 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 02:22:01,255 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:22:01" (1/1) ... [2022-04-05 02:22:01,258 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 02:22:01,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:22:01 BasicIcfg [2022-04-05 02:22:01,275 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 02:22:01,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 02:22:01,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 02:22:01,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 02:22:01,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:22:00" (1/4) ... [2022-04-05 02:22:01,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4014bab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:22:01, skipping insertion in model container [2022-04-05 02:22:01,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:22:00" (2/4) ... [2022-04-05 02:22:01,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4014bab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:22:01, skipping insertion in model container [2022-04-05 02:22:01,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:22:01" (3/4) ... [2022-04-05 02:22:01,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4014bab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:22:01, skipping insertion in model container [2022-04-05 02:22:01,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:22:01" (4/4) ... [2022-04-05 02:22:01,282 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound20.cJordan [2022-04-05 02:22:01,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 02:22:01,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 02:22:01,336 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 02:22:01,342 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 02:22:01,342 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 02:22:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 02:22:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-05 02:22:01,360 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:01,361 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] [2022-04-05 02:22:01,361 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash -282167495, now seen corresponding path program 1 times [2022-04-05 02:22:01,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:01,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610895123] [2022-04-05 02:22:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:01,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:01,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:01,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731353160] [2022-04-05 02:22:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:01,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:01,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:01,462 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 02:22:01,464 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 02:22:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:01,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-05 02:22:01,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:01,667 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 02:22:01,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:22:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610895123] [2022-04-05 02:22:01,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:01,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731353160] [2022-04-05 02:22:01,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731353160] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:22:01,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:22:01,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-05 02:22:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718691353] [2022-04-05 02:22:01,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:01,678 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-05 02:22:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-05 02:22:01,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-05 02:22:01,709 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 02:22:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:01,734 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-04-05 02:22:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-05 02:22:01,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 32 [2022-04-05 02:22:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:01,745 INFO L225 Difference]: With dead ends: 39 [2022-04-05 02:22:01,745 INFO L226 Difference]: Without dead ends: 34 [2022-04-05 02:22:01,747 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-05 02:22:01,752 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:01,754 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-05 02:22:01,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-05 02:22:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:22:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-04-05 02:22:01,796 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 32 [2022-04-05 02:22:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:01,798 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-04-05 02:22:01,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 02:22:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-04-05 02:22:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:22:01,800 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:01,800 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 02:22:01,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:02,019 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-05 02:22:02,020 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash -127828113, now seen corresponding path program 1 times [2022-04-05 02:22:02,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:02,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090790874] [2022-04-05 02:22:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:02,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:02,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207449696] [2022-04-05 02:22:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:02,054 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 02:22:02,056 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 02:22:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:02,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:22:02,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:02,269 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 02:22:02,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:22:02,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:02,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090790874] [2022-04-05 02:22:02,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:02,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207449696] [2022-04-05 02:22:02,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207449696] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:22:02,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:22:02,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 02:22:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574790889] [2022-04-05 02:22:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:02,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 02:22:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 02:22:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:22:02,277 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:02,302 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-04-05 02:22:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 02:22:02,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-05 02:22:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:02,305 INFO L225 Difference]: With dead ends: 36 [2022-04-05 02:22:02,305 INFO L226 Difference]: Without dead ends: 36 [2022-04-05 02:22:02,305 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:22:02,307 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:02,308 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-05 02:22:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-05 02:22:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:22:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-04-05 02:22:02,314 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 33 [2022-04-05 02:22:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:02,314 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-04-05 02:22:02,315 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-04-05 02:22:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-05 02:22:02,316 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:02,316 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, 1] [2022-04-05 02:22:02,338 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 02:22:02,516 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,SelfDestructingSolverStorable1 [2022-04-05 02:22:02,517 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 365419517, now seen corresponding path program 1 times [2022-04-05 02:22:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:02,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329932270] [2022-04-05 02:22:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:02,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:02,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:02,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974764806] [2022-04-05 02:22:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:02,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:02,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:02,540 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 02:22:02,542 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 02:22:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:02,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:22:02,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:22:02,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:22:02,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:02,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329932270] [2022-04-05 02:22:02,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:02,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974764806] [2022-04-05 02:22:02,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974764806] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:02,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:02,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-04-05 02:22:02,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273704955] [2022-04-05 02:22:02,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:02,867 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 02:22:02,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 02:22:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-05 02:22:02,869 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:02,973 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2022-04-05 02:22:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:22:02,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-05 02:22:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:02,975 INFO L225 Difference]: With dead ends: 45 [2022-04-05 02:22:02,975 INFO L226 Difference]: Without dead ends: 45 [2022-04-05 02:22:02,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:22:02,977 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:02,977 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 108 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:22:02,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-04-05 02:22:02,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-04-05 02:22:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:22:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-04-05 02:22:02,983 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 34 [2022-04-05 02:22:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:02,984 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-04-05 02:22:02,984 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-04-05 02:22:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-05 02:22:02,989 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:02,989 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, 1, 1, 1] [2022-04-05 02:22:03,007 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 02:22:03,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:03,196 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:03,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:03,196 INFO L85 PathProgramCache]: Analyzing trace with hash 196514290, now seen corresponding path program 1 times [2022-04-05 02:22:03,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:03,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371532691] [2022-04-05 02:22:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:03,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:03,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:03,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177141820] [2022-04-05 02:22:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:03,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:03,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:03,212 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 02:22:03,231 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 02:22:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:03,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 02:22:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:22:03,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:03,491 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 02:22:03,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:03,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371532691] [2022-04-05 02:22:03,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:03,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177141820] [2022-04-05 02:22:03,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177141820] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:03,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:03,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-05 02:22:03,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822308267] [2022-04-05 02:22:03,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:03,493 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:03,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:03,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:22:03,495 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:22:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:03,547 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-04-05 02:22:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:22:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2022-04-05 02:22:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:03,550 INFO L225 Difference]: With dead ends: 41 [2022-04-05 02:22:03,550 INFO L226 Difference]: Without dead ends: 41 [2022-04-05 02:22:03,551 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:22:03,557 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:03,558 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-05 02:22:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-05 02:22:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:22:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-04-05 02:22:03,570 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2022-04-05 02:22:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:03,571 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-04-05 02:22:03,571 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:22:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-04-05 02:22:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-05 02:22:03,577 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:03,577 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, 1] [2022-04-05 02:22:03,603 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 02:22:03,795 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:03,796 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash 56558454, now seen corresponding path program 1 times [2022-04-05 02:22:03,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:03,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519521151] [2022-04-05 02:22:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:03,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:03,819 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:03,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361660634] [2022-04-05 02:22:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:03,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:03,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:03,820 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 02:22:03,825 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 02:22:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:03,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:22:03,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:03,985 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 02:22:03,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:22:03,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:03,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519521151] [2022-04-05 02:22:03,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:03,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361660634] [2022-04-05 02:22:03,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361660634] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:22:03,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:22:03,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:22:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186666569] [2022-04-05 02:22:03,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:03,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:03,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:22:03,987 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:04,022 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-04-05 02:22:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:22:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-04-05 02:22:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:04,024 INFO L225 Difference]: With dead ends: 43 [2022-04-05 02:22:04,024 INFO L226 Difference]: Without dead ends: 43 [2022-04-05 02:22:04,025 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:22:04,025 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:04,026 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-05 02:22:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-04-05 02:22:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:22:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-04-05 02:22:04,032 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 39 [2022-04-05 02:22:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:04,032 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-04-05 02:22:04,032 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:22:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-04-05 02:22:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-05 02:22:04,033 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:04,033 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, 1, 1, 1] [2022-04-05 02:22:04,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:04,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:04,240 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:04,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash 578094295, now seen corresponding path program 1 times [2022-04-05 02:22:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:04,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773667049] [2022-04-05 02:22:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:04,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:04,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:04,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533592031] [2022-04-05 02:22:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:04,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:04,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:04,268 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 02:22:04,269 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 02:22:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:04,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 02:22:04,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-05 02:22:04,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:04,634 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 02:22:04,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:04,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773667049] [2022-04-05 02:22:04,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:04,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533592031] [2022-04-05 02:22:04,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533592031] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:04,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:04,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-04-05 02:22:04,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818510199] [2022-04-05 02:22:04,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:04,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:04,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:04,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:04,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:22:04,636 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:22:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:04,670 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-04-05 02:22:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:22:04,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-04-05 02:22:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:04,672 INFO L225 Difference]: With dead ends: 55 [2022-04-05 02:22:04,672 INFO L226 Difference]: Without dead ends: 55 [2022-04-05 02:22:04,672 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:22:04,673 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:04,673 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-05 02:22:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2022-04-05 02:22:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 02:22:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-04-05 02:22:04,680 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 41 [2022-04-05 02:22:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:04,680 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-04-05 02:22:04,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:22:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-04-05 02:22:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 02:22:04,681 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:04,681 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, 1, 1, 1] [2022-04-05 02:22:04,714 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 02:22:04,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:04,904 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1581112078, now seen corresponding path program 1 times [2022-04-05 02:22:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:04,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286526435] [2022-04-05 02:22:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:04,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:04,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993550698] [2022-04-05 02:22:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:04,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:04,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:04,917 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 02:22:04,918 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 02:22:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:04,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 02:22:04,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-05 02:22:05,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:05,259 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 02:22:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:05,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286526435] [2022-04-05 02:22:05,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:05,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993550698] [2022-04-05 02:22:05,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993550698] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:05,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:05,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-04-05 02:22:05,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654392538] [2022-04-05 02:22:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:05,261 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:05,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:22:05,262 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:22:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:05,310 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-04-05 02:22:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:22:05,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-04-05 02:22:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:05,316 INFO L225 Difference]: With dead ends: 59 [2022-04-05 02:22:05,317 INFO L226 Difference]: Without dead ends: 59 [2022-04-05 02:22:05,317 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:22:05,318 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:05,318 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:22:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-05 02:22:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-04-05 02:22:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 02:22:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-04-05 02:22:05,334 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 46 [2022-04-05 02:22:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:05,335 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-04-05 02:22:05,335 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:22:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-04-05 02:22:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 02:22:05,336 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:05,336 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, 1, 1] [2022-04-05 02:22:05,367 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 02:22:05,563 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:05,564 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:05,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1942645143, now seen corresponding path program 1 times [2022-04-05 02:22:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:05,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791319748] [2022-04-05 02:22:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:05,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:05,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599853364] [2022-04-05 02:22:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:05,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:05,583 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 02:22:05,584 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 02:22:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:05,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-05 02:22:05,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-05 02:22:05,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:06,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:06,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791319748] [2022-04-05 02:22:06,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:06,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599853364] [2022-04-05 02:22:06,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599853364] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:06,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:06,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-04-05 02:22:06,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385286897] [2022-04-05 02:22:06,048 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:06,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:22:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:22:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:22:06,049 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:22:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:06,228 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-04-05 02:22:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 02:22:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-04-05 02:22:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:06,230 INFO L225 Difference]: With dead ends: 63 [2022-04-05 02:22:06,230 INFO L226 Difference]: Without dead ends: 63 [2022-04-05 02:22:06,230 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-04-05 02:22:06,231 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:06,231 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 153 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:22:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-04-05 02:22:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-04-05 02:22:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 02:22:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-04-05 02:22:06,236 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 51 [2022-04-05 02:22:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:06,237 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-04-05 02:22:06,237 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-05 02:22:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-04-05 02:22:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 02:22:06,244 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:06,244 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:06,263 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 02:22:06,452 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,SelfDestructingSolverStorable7 [2022-04-05 02:22:06,453 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:06,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1573186588, now seen corresponding path program 1 times [2022-04-05 02:22:06,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:06,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590822654] [2022-04-05 02:22:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:06,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:06,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:06,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909373109] [2022-04-05 02:22:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:06,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:06,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:06,465 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 02:22:06,471 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 02:22:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:06,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:22:06,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-05 02:22:06,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-05 02:22:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590822654] [2022-04-05 02:22:06,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:06,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909373109] [2022-04-05 02:22:06,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909373109] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:06,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-04-05 02:22:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545869183] [2022-04-05 02:22:06,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:06,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:22:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:22:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:22:06,794 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 02:22:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:06,947 INFO L93 Difference]: Finished difference Result 207 states and 242 transitions. [2022-04-05 02:22:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 02:22:06,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 60 [2022-04-05 02:22:06,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:06,950 INFO L225 Difference]: With dead ends: 207 [2022-04-05 02:22:06,950 INFO L226 Difference]: Without dead ends: 207 [2022-04-05 02:22:06,950 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-04-05 02:22:06,951 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 119 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:06,951 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 264 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:22:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-04-05 02:22:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2022-04-05 02:22:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 130 states have internal predecessors, (150), 46 states have call successors, (46), 27 states have call predecessors, (46), 26 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-05 02:22:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 237 transitions. [2022-04-05 02:22:06,965 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 237 transitions. Word has length 60 [2022-04-05 02:22:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:06,966 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 237 transitions. [2022-04-05 02:22:06,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 02:22:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 237 transitions. [2022-04-05 02:22:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 02:22:06,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:06,967 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:06,986 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 02:22:07,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:07,180 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1491020248, now seen corresponding path program 1 times [2022-04-05 02:22:07,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:07,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164140512] [2022-04-05 02:22:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:07,190 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:07,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884605398] [2022-04-05 02:22:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:07,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:07,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:07,192 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 02:22:07,220 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 02:22:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:07,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:22:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-05 02:22:07,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-05 02:22:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:07,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164140512] [2022-04-05 02:22:07,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:07,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884605398] [2022-04-05 02:22:07,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884605398] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:07,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:07,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-05 02:22:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609558929] [2022-04-05 02:22:07,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:07,510 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 02:22:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 02:22:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:22:07,511 INFO L87 Difference]: Start difference. First operand 199 states and 237 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-04-05 02:22:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:07,737 INFO L93 Difference]: Finished difference Result 263 states and 342 transitions. [2022-04-05 02:22:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:22:07,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2022-04-05 02:22:07,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:07,739 INFO L225 Difference]: With dead ends: 263 [2022-04-05 02:22:07,739 INFO L226 Difference]: Without dead ends: 263 [2022-04-05 02:22:07,739 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-04-05 02:22:07,740 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 62 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:07,740 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 314 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:22:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-04-05 02:22:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 239. [2022-04-05 02:22:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 153 states have (on average 1.2222222222222223) internal successors, (187), 156 states have internal predecessors, (187), 60 states have call successors, (60), 26 states have call predecessors, (60), 25 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 02:22:07,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2022-04-05 02:22:07,756 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 61 [2022-04-05 02:22:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:07,757 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2022-04-05 02:22:07,757 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-04-05 02:22:07,757 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2022-04-05 02:22:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 02:22:07,758 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:07,758 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:07,783 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 02:22:07,983 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,SelfDestructingSolverStorable9 [2022-04-05 02:22:07,983 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:07,984 INFO L85 PathProgramCache]: Analyzing trace with hash 317217743, now seen corresponding path program 1 times [2022-04-05 02:22:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:07,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656843353] [2022-04-05 02:22:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:07,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:07,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631292202] [2022-04-05 02:22:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:07,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:07,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:07,994 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:08,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-05 02:22:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:08,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:22:08,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-05 02:22:08,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-05 02:22:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:08,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656843353] [2022-04-05 02:22:08,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:08,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631292202] [2022-04-05 02:22:08,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631292202] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:08,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:08,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-04-05 02:22:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067618050] [2022-04-05 02:22:08,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:08,308 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:22:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:22:08,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:22:08,309 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 02:22:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:08,457 INFO L93 Difference]: Finished difference Result 252 states and 308 transitions. [2022-04-05 02:22:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 02:22:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 63 [2022-04-05 02:22:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:08,459 INFO L225 Difference]: With dead ends: 252 [2022-04-05 02:22:08,459 INFO L226 Difference]: Without dead ends: 252 [2022-04-05 02:22:08,460 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-04-05 02:22:08,460 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 83 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:08,461 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 266 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:22:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-04-05 02:22:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-04-05 02:22:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 165 states have internal predecessors, (190), 60 states have call successors, (60), 26 states have call predecessors, (60), 25 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 02:22:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 306 transitions. [2022-04-05 02:22:08,474 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 306 transitions. Word has length 63 [2022-04-05 02:22:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:08,475 INFO L478 AbstractCegarLoop]: Abstraction has 248 states and 306 transitions. [2022-04-05 02:22:08,475 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 02:22:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 306 transitions. [2022-04-05 02:22:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 02:22:08,476 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:08,477 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:08,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:08,699 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 02:22:08,700 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:08,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 918639692, now seen corresponding path program 1 times [2022-04-05 02:22:08,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:08,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296816849] [2022-04-05 02:22:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:08,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:08,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:08,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797490740] [2022-04-05 02:22:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:08,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:08,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:08,716 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:08,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-05 02:22:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:08,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-05 02:22:08,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-04-05 02:22:09,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-04-05 02:22:09,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:09,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296816849] [2022-04-05 02:22:09,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:09,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797490740] [2022-04-05 02:22:09,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797490740] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:09,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:09,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-04-05 02:22:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094882183] [2022-04-05 02:22:09,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:09,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 02:22:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 02:22:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:22:09,210 INFO L87 Difference]: Start difference. First operand 248 states and 306 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-04-05 02:22:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:09,559 INFO L93 Difference]: Finished difference Result 332 states and 429 transitions. [2022-04-05 02:22:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 02:22:09,559 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 68 [2022-04-05 02:22:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:09,563 INFO L225 Difference]: With dead ends: 332 [2022-04-05 02:22:09,563 INFO L226 Difference]: Without dead ends: 328 [2022-04-05 02:22:09,563 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-04-05 02:22:09,564 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 44 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:09,564 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 308 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 02:22:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-04-05 02:22:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 295. [2022-04-05 02:22:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 195 states have (on average 1.1948717948717948) internal successors, (233), 204 states have internal predecessors, (233), 71 states have call successors, (71), 29 states have call predecessors, (71), 28 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 02:22:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2022-04-05 02:22:09,577 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 68 [2022-04-05 02:22:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:09,578 INFO L478 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2022-04-05 02:22:09,578 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-04-05 02:22:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2022-04-05 02:22:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 02:22:09,579 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:09,579 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:09,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:09,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-05 02:22:09,799 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -210356579, now seen corresponding path program 2 times [2022-04-05 02:22:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:09,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533109182] [2022-04-05 02:22:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:09,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:09,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604891016] [2022-04-05 02:22:09,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:22:09,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:09,811 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:09,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-05 02:22:09,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:22:09,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:22:09,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 36 conjunts are in the unsatisfiable core [2022-04-05 02:22:09,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-04-05 02:22:10,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-04-05 02:22:10,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:10,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533109182] [2022-04-05 02:22:10,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:10,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604891016] [2022-04-05 02:22:10,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604891016] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:10,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:10,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-04-05 02:22:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036562320] [2022-04-05 02:22:10,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:10,691 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 02:22:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 02:22:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-04-05 02:22:10,692 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2022-04-05 02:22:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:11,822 INFO L93 Difference]: Finished difference Result 317 states and 395 transitions. [2022-04-05 02:22:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 02:22:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) Word has length 73 [2022-04-05 02:22:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:11,825 INFO L225 Difference]: With dead ends: 317 [2022-04-05 02:22:11,825 INFO L226 Difference]: Without dead ends: 316 [2022-04-05 02:22:11,825 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-04-05 02:22:11,826 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:11,826 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 271 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 02:22:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-04-05 02:22:11,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 305. [2022-04-05 02:22:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 204 states have (on average 1.1862745098039216) internal successors, (242), 212 states have internal predecessors, (242), 69 states have call successors, (69), 32 states have call predecessors, (69), 31 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-05 02:22:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 376 transitions. [2022-04-05 02:22:11,841 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 376 transitions. Word has length 73 [2022-04-05 02:22:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:11,842 INFO L478 AbstractCegarLoop]: Abstraction has 305 states and 376 transitions. [2022-04-05 02:22:11,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2022-04-05 02:22:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 376 transitions. [2022-04-05 02:22:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-05 02:22:11,843 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:11,844 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:11,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:12,063 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-05 02:22:12,064 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash 952478412, now seen corresponding path program 3 times [2022-04-05 02:22:12,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:12,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041971110] [2022-04-05 02:22:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:12,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:12,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592123978] [2022-04-05 02:22:12,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 02:22:12,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:12,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:12,077 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:12,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-05 02:22:12,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-04-05 02:22:12,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:22:12,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 40 conjunts are in the unsatisfiable core [2022-04-05 02:22:12,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-04-05 02:22:12,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:12,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041971110] [2022-04-05 02:22:12,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:12,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592123978] [2022-04-05 02:22:12,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592123978] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:12,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:12,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-05 02:22:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85313994] [2022-04-05 02:22:12,753 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:12,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 02:22:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 02:22:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:22:12,754 INFO L87 Difference]: Start difference. First operand 305 states and 376 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-05 02:22:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:13,004 INFO L93 Difference]: Finished difference Result 335 states and 407 transitions. [2022-04-05 02:22:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 02:22:13,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 78 [2022-04-05 02:22:13,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:13,011 INFO L225 Difference]: With dead ends: 335 [2022-04-05 02:22:13,011 INFO L226 Difference]: Without dead ends: 333 [2022-04-05 02:22:13,012 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-04-05 02:22:13,012 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:13,013 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 202 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 02:22:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-04-05 02:22:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 330. [2022-04-05 02:22:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 221 states have (on average 1.1764705882352942) internal successors, (260), 228 states have internal predecessors, (260), 73 states have call successors, (73), 37 states have call predecessors, (73), 35 states have return successors, (69), 64 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-05 02:22:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 402 transitions. [2022-04-05 02:22:13,029 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 402 transitions. Word has length 78 [2022-04-05 02:22:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:13,030 INFO L478 AbstractCegarLoop]: Abstraction has 330 states and 402 transitions. [2022-04-05 02:22:13,031 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-05 02:22:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 402 transitions. [2022-04-05 02:22:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-04-05 02:22:13,032 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:13,032 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:13,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-04-05 02:22:13,243 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:13,244 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 900405455, now seen corresponding path program 1 times [2022-04-05 02:22:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:13,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915619493] [2022-04-05 02:22:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:13,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:13,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649356697] [2022-04-05 02:22:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:13,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:13,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:13,253 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:13,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-05 02:22:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:13,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-05 02:22:13,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-04-05 02:22:13,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-04-05 02:22:14,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:14,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915619493] [2022-04-05 02:22:14,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:14,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649356697] [2022-04-05 02:22:14,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649356697] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:14,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:14,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-04-05 02:22:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49052338] [2022-04-05 02:22:14,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:14,429 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 02:22:14,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 02:22:14,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-04-05 02:22:14,430 INFO L87 Difference]: Start difference. First operand 330 states and 402 transitions. Second operand has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-04-05 02:22:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:17,413 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2022-04-05 02:22:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-05 02:22:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 84 [2022-04-05 02:22:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:17,415 INFO L225 Difference]: With dead ends: 390 [2022-04-05 02:22:17,416 INFO L226 Difference]: Without dead ends: 377 [2022-04-05 02:22:17,416 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2022-04-05 02:22:17,417 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:17,417 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 403 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-05 02:22:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-04-05 02:22:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2022-04-05 02:22:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 247 states have (on average 1.1902834008097165) internal successors, (294), 252 states have internal predecessors, (294), 84 states have call successors, (84), 37 states have call predecessors, (84), 36 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2022-04-05 02:22:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 460 transitions. [2022-04-05 02:22:17,429 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 460 transitions. Word has length 84 [2022-04-05 02:22:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:17,429 INFO L478 AbstractCegarLoop]: Abstraction has 368 states and 460 transitions. [2022-04-05 02:22:17,429 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-04-05 02:22:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 460 transitions. [2022-04-05 02:22:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-05 02:22:17,430 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:17,430 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:22:17,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:17,652 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-05 02:22:17,652 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash 653404933, now seen corresponding path program 1 times [2022-04-05 02:22:17,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:17,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042725451] [2022-04-05 02:22:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:17,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:17,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:17,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112142989] [2022-04-05 02:22:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:17,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:17,667 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:17,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-05 02:22:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:17,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjunts are in the unsatisfiable core [2022-04-05 02:22:17,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 23 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-04-05 02:22:18,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:19,043 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 02:22:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:19,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042725451] [2022-04-05 02:22:19,800 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:19,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112142989] [2022-04-05 02:22:19,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112142989] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:19,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:19,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-04-05 02:22:19,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291523397] [2022-04-05 02:22:19,801 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:19,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 02:22:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:19,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 02:22:19,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-04-05 02:22:19,802 INFO L87 Difference]: Start difference. First operand 368 states and 460 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-05 02:22:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:20,420 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2022-04-05 02:22:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:22:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 101 [2022-04-05 02:22:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:20,430 INFO L225 Difference]: With dead ends: 375 [2022-04-05 02:22:20,430 INFO L226 Difference]: Without dead ends: 375 [2022-04-05 02:22:20,431 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-04-05 02:22:20,431 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 33 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:20,432 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 260 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 02:22:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-04-05 02:22:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 372. [2022-04-05 02:22:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 250 states have (on average 1.184) internal successors, (296), 255 states have internal predecessors, (296), 84 states have call successors, (84), 38 states have call predecessors, (84), 37 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2022-04-05 02:22:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 462 transitions. [2022-04-05 02:22:20,442 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 462 transitions. Word has length 101 [2022-04-05 02:22:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:20,443 INFO L478 AbstractCegarLoop]: Abstraction has 372 states and 462 transitions. [2022-04-05 02:22:20,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-05 02:22:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 462 transitions. [2022-04-05 02:22:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-04-05 02:22:20,444 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:20,444 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:20,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:20,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-05 02:22:20,659 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 487608439, now seen corresponding path program 4 times [2022-04-05 02:22:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:20,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183204363] [2022-04-05 02:22:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:20,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:20,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:20,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422195170] [2022-04-05 02:22:20,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 02:22:20,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:20,673 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:20,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-05 02:22:20,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 02:22:20,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:22:20,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:22:20,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-04-05 02:22:20,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:22:20,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:20,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183204363] [2022-04-05 02:22:20,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:20,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422195170] [2022-04-05 02:22:20,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422195170] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:22:20,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:22:20,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:22:20,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27010630] [2022-04-05 02:22:20,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:22:20,892 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:22:20,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:20,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:22:20,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:22:20,893 INFO L87 Difference]: Start difference. First operand 372 states and 462 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-04-05 02:22:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:20,962 INFO L93 Difference]: Finished difference Result 417 states and 535 transitions. [2022-04-05 02:22:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:22:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 105 [2022-04-05 02:22:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:20,968 INFO L225 Difference]: With dead ends: 417 [2022-04-05 02:22:20,968 INFO L226 Difference]: Without dead ends: 417 [2022-04-05 02:22:20,969 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-05 02:22:20,969 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 12 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:20,969 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 172 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:22:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-04-05 02:22:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 387. [2022-04-05 02:22:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 259 states have (on average 1.193050193050193) internal successors, (309), 263 states have internal predecessors, (309), 90 states have call successors, (90), 38 states have call predecessors, (90), 37 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2022-04-05 02:22:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 487 transitions. [2022-04-05 02:22:20,982 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 487 transitions. Word has length 105 [2022-04-05 02:22:20,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:20,982 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 487 transitions. [2022-04-05 02:22:20,982 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-04-05 02:22:20,982 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 487 transitions. [2022-04-05 02:22:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-05 02:22:20,984 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:20,984 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:21,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:21,200 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-05 02:22:21,201 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:21,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash 791718745, now seen corresponding path program 1 times [2022-04-05 02:22:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:21,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365101506] [2022-04-05 02:22:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:21,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:21,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:21,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116282276] [2022-04-05 02:22:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:21,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:21,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:21,218 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:21,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-05 02:22:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:22:21,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 02:22:21,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-04-05 02:22:21,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-04-05 02:22:21,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:21,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365101506] [2022-04-05 02:22:21,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:21,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116282276] [2022-04-05 02:22:21,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116282276] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:22:21,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:22:21,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-04-05 02:22:21,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044066389] [2022-04-05 02:22:21,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:21,787 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 02:22:21,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 02:22:21,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2022-04-05 02:22:21,788 INFO L87 Difference]: Start difference. First operand 387 states and 487 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-04-05 02:22:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:22:22,193 INFO L93 Difference]: Finished difference Result 1260 states and 1555 transitions. [2022-04-05 02:22:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-05 02:22:22,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 116 [2022-04-05 02:22:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:22:22,198 INFO L225 Difference]: With dead ends: 1260 [2022-04-05 02:22:22,199 INFO L226 Difference]: Without dead ends: 1260 [2022-04-05 02:22:22,199 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2022-04-05 02:22:22,200 INFO L913 BasicCegarLoop]: 90 mSDtfsCounter, 296 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 02:22:22,200 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 458 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 02:22:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-04-05 02:22:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1202. [2022-04-05 02:22:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 771 states have (on average 1.1595330739299612) internal successors, (894), 782 states have internal predecessors, (894), 305 states have call successors, (305), 126 states have call predecessors, (305), 125 states have return successors, (296), 293 states have call predecessors, (296), 296 states have call successors, (296) [2022-04-05 02:22:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1495 transitions. [2022-04-05 02:22:22,234 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1495 transitions. Word has length 116 [2022-04-05 02:22:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:22:22,234 INFO L478 AbstractCegarLoop]: Abstraction has 1202 states and 1495 transitions. [2022-04-05 02:22:22,235 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-04-05 02:22:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1495 transitions. [2022-04-05 02:22:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-04-05 02:22:22,236 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:22:22,236 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:22:22,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-05 02:22:22,451 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-05 02:22:22,452 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:22:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:22:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash -351372628, now seen corresponding path program 2 times [2022-04-05 02:22:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:22:22,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86764299] [2022-04-05 02:22:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:22:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:22:22,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:22:22,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721667812] [2022-04-05 02:22:22,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:22:22,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:22:22,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:22:22,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:22:22,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-05 02:22:22,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:22:22,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:22:22,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 73 conjunts are in the unsatisfiable core [2022-04-05 02:22:22,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:22:25,756 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 02:22:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 139 proven. 92 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-04-05 02:22:27,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:22:39,167 WARN L232 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:22:59,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:22:59,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86764299] [2022-04-05 02:22:59,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:22:59,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721667812] [2022-04-05 02:22:59,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721667812] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 02:22:59,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:22:59,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-04-05 02:22:59,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120632309] [2022-04-05 02:22:59,112 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 02:22:59,113 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 02:22:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:22:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 02:22:59,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-04-05 02:22:59,114 INFO L87 Difference]: Start difference. First operand 1202 states and 1495 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2022-04-05 02:23:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:23:01,281 INFO L93 Difference]: Finished difference Result 1329 states and 1640 transitions. [2022-04-05 02:23:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 02:23:01,282 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) Word has length 124 [2022-04-05 02:23:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:23:01,287 INFO L225 Difference]: With dead ends: 1329 [2022-04-05 02:23:01,287 INFO L226 Difference]: Without dead ends: 1329 [2022-04-05 02:23:01,288 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-04-05 02:23:01,288 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 60 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 02:23:01,289 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 320 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 02:23:01,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-04-05 02:23:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1321. [2022-04-05 02:23:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 845 states have (on average 1.1538461538461537) internal successors, (975), 856 states have internal predecessors, (975), 333 states have call successors, (333), 143 states have call predecessors, (333), 142 states have return successors, (324), 321 states have call predecessors, (324), 324 states have call successors, (324) [2022-04-05 02:23:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1632 transitions. [2022-04-05 02:23:01,325 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1632 transitions. Word has length 124 [2022-04-05 02:23:01,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:23:01,325 INFO L478 AbstractCegarLoop]: Abstraction has 1321 states and 1632 transitions. [2022-04-05 02:23:01,326 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2022-04-05 02:23:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1632 transitions. [2022-04-05 02:23:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-04-05 02:23:01,327 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:23:01,327 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:23:01,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-05 02:23:01,547 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:23:01,548 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:23:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:23:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1703433466, now seen corresponding path program 3 times [2022-04-05 02:23:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:23:01,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745209602] [2022-04-05 02:23:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:23:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:23:01,557 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:23:01,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75946969] [2022-04-05 02:23:01,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 02:23:01,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:23:01,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:23:01,558 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:23:01,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-05 02:23:01,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-04-05 02:23:01,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:23:01,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 67 conjunts are in the unsatisfiable core [2022-04-05 02:23:01,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:23:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 100 proven. 57 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-04-05 02:23:02,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:23:14,124 WARN L232 SmtUtils]: Spent 7.23s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:23:50,379 WARN L232 SmtUtils]: Spent 9.33s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:24:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 101 proven. 56 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-04-05 02:24:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:24:15,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745209602] [2022-04-05 02:24:15,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:24:15,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75946969] [2022-04-05 02:24:15,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75946969] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:24:15,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:24:15,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2022-04-05 02:24:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74889314] [2022-04-05 02:24:15,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:24:15,901 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-05 02:24:15,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:24:15,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-05 02:24:15,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=354, Unknown=3, NotChecked=0, Total=462 [2022-04-05 02:24:15,902 INFO L87 Difference]: Start difference. First operand 1321 states and 1632 transitions. Second operand has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2022-04-05 02:24:18,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:24:21,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:24:24,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:24:26,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:24:29,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:24:58,272 WARN L232 SmtUtils]: Spent 28.20s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:25:00,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:25:24,085 WARN L232 SmtUtils]: Spent 21.32s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:25:26,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:25:28,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:25:58,483 WARN L232 SmtUtils]: Spent 10.14s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:26:00,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:02,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:05,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:08,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:12,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:28,078 WARN L232 SmtUtils]: Spent 7.88s on a formula simplification that was a NOOP. DAG size: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:26:30,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:32,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:34,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:36,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:38,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:39,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:42,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:26:55,480 WARN L232 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 78 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 02:26:58,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:00,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:03,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:05,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:07,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:09,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:11,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:13,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:15,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:18,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:27:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:27:18,623 INFO L93 Difference]: Finished difference Result 1730 states and 2215 transitions. [2022-04-05 02:27:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-05 02:27:18,624 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) Word has length 128 [2022-04-05 02:27:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:27:18,632 INFO L225 Difference]: With dead ends: 1730 [2022-04-05 02:27:18,632 INFO L226 Difference]: Without dead ends: 1716 [2022-04-05 02:27:18,633 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 139.6s TimeCoverageRelationStatistics Valid=431, Invalid=1198, Unknown=11, NotChecked=0, Total=1640 [2022-04-05 02:27:18,633 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 165 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 224 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:27:18,633 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 399 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 854 Invalid, 27 Unknown, 0 Unchecked, 70.1s Time] [2022-04-05 02:27:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-04-05 02:27:18,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1530. [2022-04-05 02:27:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 989 states have (on average 1.1718907987866531) internal successors, (1159), 996 states have internal predecessors, (1159), 385 states have call successors, (385), 157 states have call predecessors, (385), 155 states have return successors, (382), 376 states have call predecessors, (382), 382 states have call successors, (382) [2022-04-05 02:27:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1926 transitions. [2022-04-05 02:27:18,681 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1926 transitions. Word has length 128 [2022-04-05 02:27:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:27:18,681 INFO L478 AbstractCegarLoop]: Abstraction has 1530 states and 1926 transitions. [2022-04-05 02:27:18,681 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2022-04-05 02:27:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1926 transitions. [2022-04-05 02:27:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-04-05 02:27:18,683 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:27:18,683 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:27:18,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-04-05 02:27:18,907 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:18,907 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:27:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:27:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1569660177, now seen corresponding path program 1 times [2022-04-05 02:27:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:27:18,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907225412] [2022-04-05 02:27:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:27:18,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:27:18,925 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:27:18,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105273758] [2022-04-05 02:27:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:27:18,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:18,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:27:18,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:27:18,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-05 02:27:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:27:18,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 02:27:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:27:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 434 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-04-05 02:27:19,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:27:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2022-04-05 02:27:19,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:27:19,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907225412] [2022-04-05 02:27:19,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:27:19,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105273758] [2022-04-05 02:27:19,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105273758] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:27:19,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:27:19,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-04-05 02:27:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060472490] [2022-04-05 02:27:19,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:27:19,521 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 02:27:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:27:19,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 02:27:19,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2022-04-05 02:27:19,521 INFO L87 Difference]: Start difference. First operand 1530 states and 1926 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 12 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) [2022-04-05 02:27:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:27:19,937 INFO L93 Difference]: Finished difference Result 1577 states and 1945 transitions. [2022-04-05 02:27:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-05 02:27:19,938 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 12 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) Word has length 133 [2022-04-05 02:27:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:27:19,944 INFO L225 Difference]: With dead ends: 1577 [2022-04-05 02:27:19,944 INFO L226 Difference]: Without dead ends: 1577 [2022-04-05 02:27:19,945 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2022-04-05 02:27:19,945 INFO L913 BasicCegarLoop]: 88 mSDtfsCounter, 336 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 02:27:19,947 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 346 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 02:27:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2022-04-05 02:27:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1545. [2022-04-05 02:27:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1004 states have (on average 1.1484063745019921) internal successors, (1153), 1011 states have internal predecessors, (1153), 385 states have call successors, (385), 157 states have call predecessors, (385), 155 states have return successors, (382), 376 states have call predecessors, (382), 382 states have call successors, (382) [2022-04-05 02:27:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1920 transitions. [2022-04-05 02:27:19,983 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1920 transitions. Word has length 133 [2022-04-05 02:27:19,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:27:19,984 INFO L478 AbstractCegarLoop]: Abstraction has 1545 states and 1920 transitions. [2022-04-05 02:27:19,984 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 12 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) [2022-04-05 02:27:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1920 transitions. [2022-04-05 02:27:19,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-04-05 02:27:19,986 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:27:19,986 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:27:20,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-05 02:27:20,199 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:20,199 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:27:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:27:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1381701507, now seen corresponding path program 2 times [2022-04-05 02:27:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:27:20,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786082482] [2022-04-05 02:27:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:27:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:27:20,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:27:20,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124979517] [2022-04-05 02:27:20,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:27:20,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:20,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:27:20,213 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:27:20,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-05 02:27:20,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:27:20,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:27:20,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 90 conjunts are in the unsatisfiable core [2022-04-05 02:27:20,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:27:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 123 proven. 126 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-04-05 02:27:22,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:27:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 02:27:23,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:27:23,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786082482] [2022-04-05 02:27:23,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:27:23,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124979517] [2022-04-05 02:27:23,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124979517] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:27:23,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:27:23,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 26 [2022-04-05 02:27:23,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897209457] [2022-04-05 02:27:23,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:27:23,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-05 02:27:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:27:23,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-05 02:27:23,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-04-05 02:27:23,694 INFO L87 Difference]: Start difference. First operand 1545 states and 1920 transitions. Second operand has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-04-05 02:27:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:27:30,000 INFO L93 Difference]: Finished difference Result 1671 states and 2065 transitions. [2022-04-05 02:27:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-05 02:27:30,001 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 134 [2022-04-05 02:27:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:27:30,007 INFO L225 Difference]: With dead ends: 1671 [2022-04-05 02:27:30,007 INFO L226 Difference]: Without dead ends: 1662 [2022-04-05 02:27:30,008 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 02:27:30,009 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 125 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-04-05 02:27:30,009 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 620 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-04-05 02:27:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-04-05 02:27:30,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1351. [2022-04-05 02:27:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 869 states have (on average 1.1357882623705409) internal successors, (987), 879 states have internal predecessors, (987), 328 states have call successors, (328), 154 states have call predecessors, (328), 153 states have return successors, (326), 317 states have call predecessors, (326), 326 states have call successors, (326) [2022-04-05 02:27:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1641 transitions. [2022-04-05 02:27:30,050 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1641 transitions. Word has length 134 [2022-04-05 02:27:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:27:30,050 INFO L478 AbstractCegarLoop]: Abstraction has 1351 states and 1641 transitions. [2022-04-05 02:27:30,050 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-04-05 02:27:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1641 transitions. [2022-04-05 02:27:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-04-05 02:27:30,056 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:27:30,056 INFO L499 BasicCegarLoop]: trace histogram [37, 36, 36, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:27:30,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-05 02:27:30,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:30,272 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:27:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:27:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -42185316, now seen corresponding path program 2 times [2022-04-05 02:27:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:27:30,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960335303] [2022-04-05 02:27:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:27:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:27:30,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:27:30,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414577337] [2022-04-05 02:27:30,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:27:30,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:30,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:27:30,287 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:27:30,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-05 02:27:30,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:27:30,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:27:30,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-05 02:27:30,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:27:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 72 proven. 2606 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-04-05 02:27:30,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:27:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 72 proven. 302 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2022-04-05 02:27:31,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:27:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960335303] [2022-04-05 02:27:31,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:27:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414577337] [2022-04-05 02:27:31,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414577337] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:27:31,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:27:31,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2022-04-05 02:27:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705509024] [2022-04-05 02:27:31,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:27:31,364 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-05 02:27:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:27:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-05 02:27:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-04-05 02:27:31,365 INFO L87 Difference]: Start difference. First operand 1351 states and 1641 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-04-05 02:27:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:27:32,017 INFO L93 Difference]: Finished difference Result 2458 states and 3054 transitions. [2022-04-05 02:27:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-04-05 02:27:32,018 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) Word has length 260 [2022-04-05 02:27:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:27:32,027 INFO L225 Difference]: With dead ends: 2458 [2022-04-05 02:27:32,027 INFO L226 Difference]: Without dead ends: 2456 [2022-04-05 02:27:32,028 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 02:27:32,028 INFO L913 BasicCegarLoop]: 112 mSDtfsCounter, 345 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 02:27:32,028 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 569 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 02:27:32,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2022-04-05 02:27:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2391. [2022-04-05 02:27:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 1565 states have (on average 1.16741214057508) internal successors, (1827), 1591 states have internal predecessors, (1827), 585 states have call successors, (585), 242 states have call predecessors, (585), 240 states have return successors, (579), 557 states have call predecessors, (579), 579 states have call successors, (579) [2022-04-05 02:27:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 2991 transitions. [2022-04-05 02:27:32,119 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 2991 transitions. Word has length 260 [2022-04-05 02:27:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:27:32,120 INFO L478 AbstractCegarLoop]: Abstraction has 2391 states and 2991 transitions. [2022-04-05 02:27:32,120 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-04-05 02:27:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 2991 transitions. [2022-04-05 02:27:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-04-05 02:27:32,125 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:27:32,125 INFO L499 BasicCegarLoop]: trace histogram [37, 36, 36, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:27:32,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-05 02:27:32,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:32,339 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:27:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:27:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2118395671, now seen corresponding path program 1 times [2022-04-05 02:27:32,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:27:32,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449317515] [2022-04-05 02:27:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:27:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:27:32,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:27:32,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815822405] [2022-04-05 02:27:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:27:32,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:32,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:27:32,357 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:27:32,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-05 02:27:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:27:32,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-05 02:27:32,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:27:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 91 proven. 2610 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-04-05 02:27:32,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:27:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 91 proven. 306 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2022-04-05 02:27:33,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:27:33,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449317515] [2022-04-05 02:27:33,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:27:33,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815822405] [2022-04-05 02:27:33,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815822405] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:27:33,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:27:33,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2022-04-05 02:27:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533474164] [2022-04-05 02:27:33,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:27:33,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-05 02:27:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:27:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-05 02:27:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-04-05 02:27:33,392 INFO L87 Difference]: Start difference. First operand 2391 states and 2991 transitions. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-04-05 02:27:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:27:33,950 INFO L93 Difference]: Finished difference Result 2077 states and 2487 transitions. [2022-04-05 02:27:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-04-05 02:27:33,952 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) Word has length 263 [2022-04-05 02:27:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:27:33,960 INFO L225 Difference]: With dead ends: 2077 [2022-04-05 02:27:33,960 INFO L226 Difference]: Without dead ends: 2077 [2022-04-05 02:27:33,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 502 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=628, Invalid=1094, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 02:27:33,961 INFO L913 BasicCegarLoop]: 112 mSDtfsCounter, 283 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 02:27:33,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 451 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 02:27:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2022-04-05 02:27:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2005. [2022-04-05 02:27:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1271 states have (on average 1.121164437450826) internal successors, (1425), 1281 states have internal predecessors, (1425), 496 states have call successors, (496), 238 states have call predecessors, (496), 237 states have return successors, (494), 485 states have call predecessors, (494), 494 states have call successors, (494) [2022-04-05 02:27:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2415 transitions. [2022-04-05 02:27:34,007 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2415 transitions. Word has length 263 [2022-04-05 02:27:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:27:34,007 INFO L478 AbstractCegarLoop]: Abstraction has 2005 states and 2415 transitions. [2022-04-05 02:27:34,008 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-04-05 02:27:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2415 transitions. [2022-04-05 02:27:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-04-05 02:27:34,015 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:27:34,015 INFO L499 BasicCegarLoop]: trace histogram [53, 52, 52, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 8, 7, 7, 7, 7, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:27:34,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-04-05 02:27:34,231 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:34,231 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:27:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:27:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1140261512, now seen corresponding path program 3 times [2022-04-05 02:27:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:27:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156619201] [2022-04-05 02:27:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:27:34,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:27:34,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:27:34,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146972201] [2022-04-05 02:27:34,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 02:27:34,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:27:34,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:27:34,256 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:27:34,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-05 02:29:10,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-04-05 02:29:10,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-05 02:29:10,796 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 02:29:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 02:29:13,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 02:29:13,407 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 02:29:13,408 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 02:29:13,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-04-05 02:29:13,610 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-04-05 02:29:13,613 INFO L719 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:29:13,617 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 02:29:13,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:29:13 BasicIcfg [2022-04-05 02:29:13,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 02:29:13,717 INFO L158 Benchmark]: Toolchain (without parser) took 433061.93ms. Allocated memory was 185.6MB in the beginning and 223.3MB in the end (delta: 37.7MB). Free memory was 135.5MB in the beginning and 77.2MB in the end (delta: 58.3MB). Peak memory consumption was 97.6MB. Max. memory is 8.0GB. [2022-04-05 02:29:13,717 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory was 151.8MB in the beginning and 151.7MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:29:13,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.30ms. Allocated memory is still 185.6MB. Free memory was 135.3MB in the beginning and 164.1MB in the end (delta: -28.7MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-04-05 02:29:13,718 INFO L158 Benchmark]: Boogie Preprocessor took 25.93ms. Allocated memory is still 185.6MB. Free memory was 164.1MB in the beginning and 162.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:29:13,718 INFO L158 Benchmark]: RCFGBuilder took 341.43ms. Allocated memory is still 185.6MB. Free memory was 162.5MB in the beginning and 151.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 02:29:13,718 INFO L158 Benchmark]: IcfgTransformer took 28.24ms. Allocated memory is still 185.6MB. Free memory was 151.3MB in the beginning and 149.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:29:13,718 INFO L158 Benchmark]: TraceAbstraction took 432439.95ms. Allocated memory was 185.6MB in the beginning and 223.3MB in the end (delta: 37.7MB). Free memory was 149.2MB in the beginning and 77.2MB in the end (delta: 72.0MB). Peak memory consumption was 110.7MB. Max. memory is 8.0GB. [2022-04-05 02:29:13,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory was 151.8MB in the beginning and 151.7MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.30ms. Allocated memory is still 185.6MB. Free memory was 135.3MB in the beginning and 164.1MB in the end (delta: -28.7MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.93ms. Allocated memory is still 185.6MB. Free memory was 164.1MB in the beginning and 162.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 341.43ms. Allocated memory is still 185.6MB. Free memory was 162.5MB in the beginning and 151.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 28.24ms. Allocated memory is still 185.6MB. Free memory was 151.3MB in the beginning and 149.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 432439.95ms. Allocated memory was 185.6MB in the beginning and 223.3MB in the end (delta: 37.7MB). Free memory was 149.2MB in the beginning and 77.2MB in the end (delta: 72.0MB). Peak memory consumption was 110.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=24, counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=34, y=55] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=34, y=55] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [\old(counter)=0, a=34, b=55, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [\old(counter)=0, a=34, b=55, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [\old(counter)=0, a=34, b=55, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=34, b=55, c=0, counter=1, counter++=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=34, b=55, c=34, counter=1, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=55, b=34, c=34, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=34, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=55, b=34, c=55, counter=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, counter++=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=55, b=34, c=21, counter=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, counter++=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=34, b=21, c=21, counter=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=21, counter=6, counter++=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=34, b=21, c=34, counter=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, counter++=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=34, b=21, c=13, counter=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, counter++=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=21, b=13, c=13, counter=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=13, counter=9, counter++=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=21, b=13, c=21, counter=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, counter++=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=21, b=13, c=8, counter=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, counter++=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=13, b=8, c=8, counter=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=8, counter=12, counter++=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=13, b=8, c=13, counter=12, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, counter++=12, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=13, b=8, c=5, counter=13, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, counter++=13, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=8, b=5, c=5, counter=14, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=5, counter=15, counter++=14, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=8, b=5, c=8, counter=15, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, counter++=15, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=8, b=5, c=3, counter=16, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, counter++=16, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=5, b=3, c=3, counter=17, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=3, counter=18, counter++=17, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=5, b=3, c=5, counter=18, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, counter++=18, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=5, b=3, c=2, counter=19, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, counter++=19, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=3, b=2, c=2, counter=20, k=1, p=-8, q=13, r=5, s=-8, temp=-3, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=2, counter=21, counter++=20, k=1, p=-8, q=13, r=5, s=-8, temp=-3, x=34, xy=1870, y=55, yy=3025] [L40] COND FALSE !(counter++<20) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=21] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=21] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 432.3s, OverallIterations: 25, TraceHistogramMax: 53, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 199.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 2296 SdHoareTripleChecker+Valid, 82.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2216 mSDsluCounter, 6613 SdHoareTripleChecker+Invalid, 81.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5212 mSDsCounter, 2007 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6798 IncrementalHoareTripleChecker+Invalid, 8832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2007 mSolverCounterUnsat, 1401 mSDtfsCounter, 6798 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3997 GetRequests, 3540 SyntacticMatches, 19 SemanticMatches, 438 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 158.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2391occurred in iteration=23, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 24 MinimizatonAttempts, 868 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 97.4s SatisfiabilityAnalysisTime, 125.0s InterpolantComputationTime, 2523 NumberOfCodeBlocks, 2443 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 3723 ConstructedInterpolants, 0 QuantifiedInterpolants, 19248 SizeOfPredicates, 152 NumberOfNonLiveVariables, 5979 ConjunctsInSsa, 643 ConjunctsInUnsatCore, 40 InterpolantComputations, 7 PerfectInterpolantSequences, 11320/18434 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-05 02:29:13,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...