/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/hard2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 01:27:36,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 01:27:36,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 01:27:36,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 01:27:36,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 01:27:36,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 01:27:36,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 01:27:36,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 01:27:36,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 01:27:36,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 01:27:36,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 01:27:36,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 01:27:36,623 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 01:27:36,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 01:27:36,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 01:27:36,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 01:27:36,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 01:27:36,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 01:27:36,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 01:27:36,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 01:27:36,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 01:27:36,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 01:27:36,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 01:27:36,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 01:27:36,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 01:27:36,661 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 01:27:36,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 01:27:36,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 01:27:36,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 01:27:36,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 01:27:36,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 01:27:36,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 01:27:36,663 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 01:27:36,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 01:27:36,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 01:27:36,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 01:27:36,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 01:27:36,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 01:27:36,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 01:27:36,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 01:27:36,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 01:27:36,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 01:27:36,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 01:27:36,665 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 01:27:36,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 01:27:36,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 01:27:36,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 01:27:36,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 01:27:36,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 01:27:36,911 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 01:27:36,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/hard2.c [2022-04-05 01:27:36,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed5c745b/7e9fb32f80874093b1f479af043b11b0/FLAGdb1326ac2 [2022-04-05 01:27:37,324 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 01:27:37,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/hard2.c [2022-04-05 01:27:37,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed5c745b/7e9fb32f80874093b1f479af043b11b0/FLAGdb1326ac2 [2022-04-05 01:27:37,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed5c745b/7e9fb32f80874093b1f479af043b11b0 [2022-04-05 01:27:37,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 01:27:37,754 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 01:27:37,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 01:27:37,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 01:27:37,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 01:27:37,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:37,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536b728f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37, skipping insertion in model container [2022-04-05 01:27:37,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:37,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 01:27:37,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 01:27:37,886 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/hard2.c[526,539] [2022-04-05 01:27:37,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 01:27:37,904 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 01:27:37,948 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/hard2.c[526,539] [2022-04-05 01:27:37,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 01:27:37,968 INFO L208 MainTranslator]: Completed translation [2022-04-05 01:27:37,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37 WrapperNode [2022-04-05 01:27:37,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 01:27:37,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 01:27:37,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 01:27:37,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 01:27:37,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:37,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:37,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:37,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:38,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:38,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:38,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:38,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 01:27:38,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 01:27:38,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 01:27:38,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 01:27:38,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (1/1) ... [2022-04-05 01:27:38,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 01:27:38,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:38,054 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 01:27:38,063 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 01:27:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 01:27:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 01:27:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 01:27:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 01:27:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 01:27:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 01:27:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 01:27:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 01:27:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 01:27:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 01:27:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 01:27:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 01:27:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 01:27:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 01:27:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 01:27:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 01:27:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 01:27:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 01:27:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 01:27:38,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 01:27:38,141 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 01:27:38,143 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 01:27:38,262 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 01:27:38,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 01:27:38,266 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 01:27:38,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:27:38 BoogieIcfgContainer [2022-04-05 01:27:38,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 01:27:38,269 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 01:27:38,269 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 01:27:38,269 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 01:27:38,286 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:27:38" (1/1) ... [2022-04-05 01:27:38,299 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 01:27:38,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 01:27:38 BasicIcfg [2022-04-05 01:27:38,315 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 01:27:38,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 01:27:38,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 01:27:38,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 01:27:38,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 01:27:37" (1/4) ... [2022-04-05 01:27:38,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f5458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 01:27:38, skipping insertion in model container [2022-04-05 01:27:38,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:27:37" (2/4) ... [2022-04-05 01:27:38,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f5458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 01:27:38, skipping insertion in model container [2022-04-05 01:27:38,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:27:38" (3/4) ... [2022-04-05 01:27:38,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f5458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 01:27:38, skipping insertion in model container [2022-04-05 01:27:38,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 01:27:38" (4/4) ... [2022-04-05 01:27:38,322 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2.cJordan [2022-04-05 01:27:38,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 01:27:38,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 01:27:38,356 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 01:27:38,360 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 01:27:38,361 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 01:27:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 01:27:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-05 01:27:38,376 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:38,376 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:38,377 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1059151250, now seen corresponding path program 1 times [2022-04-05 01:27:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:38,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392207840] [2022-04-05 01:27:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:38,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 01:27:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 01:27:38,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:38,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392207840] [2022-04-05 01:27:38,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392207840] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:27:38,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:27:38,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 01:27:38,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960523611] [2022-04-05 01:27:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:27:38,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 01:27:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:38,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 01:27:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 01:27:38,654 INFO L87 Difference]: Start difference. First operand has 29 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 01:27:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:38,887 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2022-04-05 01:27:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 01:27:38,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-05 01:27:38,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:38,895 INFO L225 Difference]: With dead ends: 43 [2022-04-05 01:27:38,895 INFO L226 Difference]: Without dead ends: 35 [2022-04-05 01:27:38,898 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 01:27:38,901 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:38,902 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 48 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:27:38,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-05 01:27:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-04-05 01:27:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 01:27:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-04-05 01:27:38,942 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 11 [2022-04-05 01:27:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:38,942 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-04-05 01:27:38,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 01:27:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-04-05 01:27:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-05 01:27:38,944 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:38,945 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:38,945 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 01:27:38,945 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2043934920, now seen corresponding path program 1 times [2022-04-05 01:27:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904767145] [2022-04-05 01:27:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 01:27:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-05 01:27:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 01:27:39,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:39,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904767145] [2022-04-05 01:27:39,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904767145] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:27:39,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:27:39,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 01:27:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52829430] [2022-04-05 01:27:39,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:27:39,060 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 01:27:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 01:27:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 01:27:39,061 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 01:27:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:39,209 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-04-05 01:27:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 01:27:39,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-04-05 01:27:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:39,212 INFO L225 Difference]: With dead ends: 39 [2022-04-05 01:27:39,212 INFO L226 Difference]: Without dead ends: 39 [2022-04-05 01:27:39,215 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 01:27:39,216 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:39,217 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 40 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:27:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-05 01:27:39,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-04-05 01:27:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 01:27:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-04-05 01:27:39,223 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2022-04-05 01:27:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:39,224 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-04-05 01:27:39,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 01:27:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-05 01:27:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-05 01:27:39,225 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:39,225 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:39,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 01:27:39,225 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:39,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash 106953131, now seen corresponding path program 1 times [2022-04-05 01:27:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:39,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653975562] [2022-04-05 01:27:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:39,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:27:39,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441617728] [2022-04-05 01:27:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:39,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:39,250 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 01:27:39,252 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 01:27:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:39,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 01:27:39,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:27:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 01:27:39,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 01:27:39,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:39,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653975562] [2022-04-05 01:27:39,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:27:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441617728] [2022-04-05 01:27:39,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441617728] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:27:39,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:27:39,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 01:27:39,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396211459] [2022-04-05 01:27:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:27:39,415 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 01:27:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 01:27:39,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 01:27:39,416 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 01:27:39,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:39,460 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2022-04-05 01:27:39,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 01:27:39,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-04-05 01:27:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:39,461 INFO L225 Difference]: With dead ends: 47 [2022-04-05 01:27:39,461 INFO L226 Difference]: Without dead ends: 46 [2022-04-05 01:27:39,462 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 01:27:39,463 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:39,463 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 01:27:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-05 01:27:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-04-05 01:27:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 01:27:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-04-05 01:27:39,470 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2022-04-05 01:27:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:39,470 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-04-05 01:27:39,470 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 01:27:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-04-05 01:27:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-05 01:27:39,471 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:39,471 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:39,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-05 01:27:39,694 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:39,694 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash 606156080, now seen corresponding path program 1 times [2022-04-05 01:27:39,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:39,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313351927] [2022-04-05 01:27:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:39,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:39,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:27:39,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84763391] [2022-04-05 01:27:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:39,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:39,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:39,708 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 01:27:39,720 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 01:27:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:39,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 01:27:39,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:27:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 01:27:39,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 01:27:39,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:39,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313351927] [2022-04-05 01:27:39,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:27:39,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84763391] [2022-04-05 01:27:39,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84763391] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:27:39,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:27:39,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 01:27:39,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027839106] [2022-04-05 01:27:39,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:27:39,847 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 01:27:39,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 01:27:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 01:27:39,848 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 01:27:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:39,890 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-04-05 01:27:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 01:27:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-05 01:27:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:39,892 INFO L225 Difference]: With dead ends: 57 [2022-04-05 01:27:39,892 INFO L226 Difference]: Without dead ends: 52 [2022-04-05 01:27:39,892 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 01:27:39,893 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:39,894 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 81 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 01:27:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-05 01:27:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-04-05 01:27:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 01:27:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-04-05 01:27:39,899 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 28 [2022-04-05 01:27:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:39,900 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-04-05 01:27:39,900 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 01:27:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-04-05 01:27:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 01:27:39,901 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:39,901 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:39,931 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 01:27:40,123 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,SelfDestructingSolverStorable3 [2022-04-05 01:27:40,124 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 312970699, now seen corresponding path program 1 times [2022-04-05 01:27:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:40,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848708466] [2022-04-05 01:27:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:40,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:27:40,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518123612] [2022-04-05 01:27:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:40,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:40,135 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 01:27:40,136 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 01:27:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:40,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 01:27:40,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:27:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 01:27:40,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:27:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-04-05 01:27:40,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:40,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848708466] [2022-04-05 01:27:40,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:27:40,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518123612] [2022-04-05 01:27:40,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518123612] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 01:27:40,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 01:27:40,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-05 01:27:40,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457585496] [2022-04-05 01:27:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:27:40,453 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 01:27:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 01:27:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-05 01:27:40,454 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 01:27:40,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:40,506 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2022-04-05 01:27:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 01:27:40,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-04-05 01:27:40,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:40,509 INFO L225 Difference]: With dead ends: 61 [2022-04-05 01:27:40,509 INFO L226 Difference]: Without dead ends: 61 [2022-04-05 01:27:40,509 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-05 01:27:40,510 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:40,510 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 89 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 01:27:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-04-05 01:27:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2022-04-05 01:27:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 36 states have internal predecessors, (39), 17 states have call successors, (17), 8 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 01:27:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2022-04-05 01:27:40,516 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 38 [2022-04-05 01:27:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:40,516 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2022-04-05 01:27:40,516 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 01:27:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2022-04-05 01:27:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 01:27:40,518 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:40,518 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:40,538 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 01:27:40,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:40,732 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1500982750, now seen corresponding path program 1 times [2022-04-05 01:27:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:40,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973837420] [2022-04-05 01:27:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:40,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:27:40,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365254871] [2022-04-05 01:27:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:40,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:40,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:40,747 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 01:27:40,749 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 01:27:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:40,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-05 01:27:40,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:27:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 01:27:41,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:27:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 01:27:42,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:42,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973837420] [2022-04-05 01:27:42,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:27:42,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365254871] [2022-04-05 01:27:42,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365254871] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:27:42,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:27:42,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-05 01:27:42,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518097105] [2022-04-05 01:27:42,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:27:42,051 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 01:27:42,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:42,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 01:27:42,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-05 01:27:42,051 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-05 01:27:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:44,535 INFO L93 Difference]: Finished difference Result 125 states and 170 transitions. [2022-04-05 01:27:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 01:27:44,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 58 [2022-04-05 01:27:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:44,539 INFO L225 Difference]: With dead ends: 125 [2022-04-05 01:27:44,539 INFO L226 Difference]: Without dead ends: 119 [2022-04-05 01:27:44,539 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-05 01:27:44,540 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 37 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:44,540 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 149 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 01:27:44,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-04-05 01:27:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2022-04-05 01:27:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 67 states have internal predecessors, (78), 32 states have call successors, (32), 12 states have call predecessors, (32), 11 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 01:27:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2022-04-05 01:27:44,550 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 58 [2022-04-05 01:27:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:44,551 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2022-04-05 01:27:44,551 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-05 01:27:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2022-04-05 01:27:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 01:27:44,552 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:44,552 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:44,578 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 01:27:44,768 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:44,768 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash -781577916, now seen corresponding path program 1 times [2022-04-05 01:27:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:44,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352839848] [2022-04-05 01:27:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:44,778 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:27:44,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387420584] [2022-04-05 01:27:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:44,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:44,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:44,785 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 01:27:44,787 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 01:27:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:44,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-05 01:27:44,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:27:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-04-05 01:27:45,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:27:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-04-05 01:27:45,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:45,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352839848] [2022-04-05 01:27:45,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:27:45,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387420584] [2022-04-05 01:27:45,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387420584] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:27:45,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:27:45,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2022-04-05 01:27:45,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827751524] [2022-04-05 01:27:45,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:27:45,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 01:27:45,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:45,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 01:27:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-05 01:27:45,481 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 01:27:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:45,772 INFO L93 Difference]: Finished difference Result 128 states and 159 transitions. [2022-04-05 01:27:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 01:27:45,773 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 69 [2022-04-05 01:27:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:45,774 INFO L225 Difference]: With dead ends: 128 [2022-04-05 01:27:45,774 INFO L226 Difference]: Without dead ends: 109 [2022-04-05 01:27:45,774 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-04-05 01:27:45,775 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:45,775 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 84 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 01:27:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-04-05 01:27:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2022-04-05 01:27:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 60 states have internal predecessors, (67), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 01:27:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2022-04-05 01:27:45,784 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 69 [2022-04-05 01:27:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:45,784 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2022-04-05 01:27:45,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-05 01:27:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2022-04-05 01:27:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-05 01:27:45,785 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:45,785 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:45,810 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 01:27:45,997 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:45,997 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1979995209, now seen corresponding path program 1 times [2022-04-05 01:27:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014544183] [2022-04-05 01:27:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:45,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:46,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:27:46,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103431535] [2022-04-05 01:27:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:46,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:46,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:46,015 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 01:27:46,015 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 01:27:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:27:46,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-05 01:27:46,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:27:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-04-05 01:27:46,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 01:27:46,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:27:46,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014544183] [2022-04-05 01:27:46,240 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:27:46,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103431535] [2022-04-05 01:27:46,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103431535] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:27:46,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:27:46,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 01:27:46,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230317538] [2022-04-05 01:27:46,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:27:46,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 01:27:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:27:46,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 01:27:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-05 01:27:46,242 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-05 01:27:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:27:46,288 INFO L93 Difference]: Finished difference Result 97 states and 116 transitions. [2022-04-05 01:27:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 01:27:46,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 78 [2022-04-05 01:27:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:27:46,289 INFO L225 Difference]: With dead ends: 97 [2022-04-05 01:27:46,289 INFO L226 Difference]: Without dead ends: 97 [2022-04-05 01:27:46,290 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-05 01:27:46,290 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 01:27:46,290 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 91 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 01:27:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-05 01:27:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-04-05 01:27:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.152542372881356) internal successors, (68), 60 states have internal predecessors, (68), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 01:27:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2022-04-05 01:27:46,297 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 78 [2022-04-05 01:27:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:27:46,297 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2022-04-05 01:27:46,297 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-05 01:27:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2022-04-05 01:27:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-05 01:27:46,299 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:27:46,299 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:27:46,321 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 01:27:46,511 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:46,512 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:27:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:27:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1650636816, now seen corresponding path program 2 times [2022-04-05 01:27:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:27:46,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633473786] [2022-04-05 01:27:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:27:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:27:46,520 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:27:46,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113017672] [2022-04-05 01:27:46,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 01:27:46,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:27:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:27:46,522 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 01:27:46,534 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 01:27:46,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 01:27:46,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 01:27:46,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2022-04-05 01:27:46,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:27:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 01:27:47,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:28:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 19 refuted. 5 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 01:28:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:28:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633473786] [2022-04-05 01:28:12,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:28:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113017672] [2022-04-05 01:28:12,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113017672] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:28:12,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:28:12,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-05 01:28:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783115632] [2022-04-05 01:28:12,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:28:12,846 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 01:28:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:28:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 01:28:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=178, Unknown=2, NotChecked=0, Total=240 [2022-04-05 01:28:12,847 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-04-05 01:28:20,169 WARN L232 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 192 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-05 01:28:27,103 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 01:28:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:28:27,493 INFO L93 Difference]: Finished difference Result 187 states and 252 transitions. [2022-04-05 01:28:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 01:28:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 88 [2022-04-05 01:28:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:28:27,499 INFO L225 Difference]: With dead ends: 187 [2022-04-05 01:28:27,499 INFO L226 Difference]: Without dead ends: 171 [2022-04-05 01:28:27,499 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 158 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=114, Invalid=304, Unknown=2, NotChecked=0, Total=420 [2022-04-05 01:28:27,503 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 90 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 189 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-04-05 01:28:27,503 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 233 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 696 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-04-05 01:28:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-04-05 01:28:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2022-04-05 01:28:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.21875) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 15 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 01:28:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2022-04-05 01:28:27,521 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 88 [2022-04-05 01:28:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:28:27,521 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2022-04-05 01:28:27,522 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-04-05 01:28:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2022-04-05 01:28:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-05 01:28:27,523 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:28:27,523 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:28:27,544 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 01:28:27,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:28:27,732 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:28:27,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:28:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1538097783, now seen corresponding path program 1 times [2022-04-05 01:28:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:28:27,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244131663] [2022-04-05 01:28:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:28:27,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:28:27,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:28:27,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786976212] [2022-04-05 01:28:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:28:27,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:28:27,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:28:27,741 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 01:28:27,754 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 01:28:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:28:27,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 01:28:27,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:28:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 01:28:28,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:28:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 01:28:28,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:28:28,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244131663] [2022-04-05 01:28:28,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:28:28,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786976212] [2022-04-05 01:28:28,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786976212] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:28:28,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:28:28,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-05 01:28:28,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22715677] [2022-04-05 01:28:28,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:28:28,908 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 01:28:28,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:28:28,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 01:28:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-04-05 01:28:28,909 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 7 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-04-05 01:28:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:28:29,195 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2022-04-05 01:28:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 01:28:29,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 7 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 104 [2022-04-05 01:28:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:28:29,197 INFO L225 Difference]: With dead ends: 174 [2022-04-05 01:28:29,197 INFO L226 Difference]: Without dead ends: 168 [2022-04-05 01:28:29,198 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-04-05 01:28:29,198 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 01:28:29,198 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 254 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 01:28:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-04-05 01:28:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-04-05 01:28:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.21) internal successors, (121), 104 states have internal predecessors, (121), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 01:28:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 223 transitions. [2022-04-05 01:28:29,208 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 223 transitions. Word has length 104 [2022-04-05 01:28:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:28:29,208 INFO L478 AbstractCegarLoop]: Abstraction has 168 states and 223 transitions. [2022-04-05 01:28:29,208 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 7 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-04-05 01:28:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 223 transitions. [2022-04-05 01:28:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-04-05 01:28:29,210 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:28:29,210 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:28:29,232 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 01:28:29,427 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,SelfDestructingSolverStorable9 [2022-04-05 01:28:29,428 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:28:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:28:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -191386235, now seen corresponding path program 2 times [2022-04-05 01:28:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:28:29,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483488363] [2022-04-05 01:28:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:28:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:28:29,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:28:29,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222656649] [2022-04-05 01:28:29,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 01:28:29,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:28:29,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:28:29,443 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 01:28:29,460 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 01:28:29,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 01:28:29,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 01:28:29,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 01:28:29,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:28:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 102 proven. 42 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-04-05 01:28:29,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:28:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 01:28:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:28:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483488363] [2022-04-05 01:28:29,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:28:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222656649] [2022-04-05 01:28:29,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222656649] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:28:29,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:28:29,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-04-05 01:28:29,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218553458] [2022-04-05 01:28:29,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:28:29,996 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 01:28:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:28:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 01:28:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-05 01:28:29,997 INFO L87 Difference]: Start difference. First operand 168 states and 223 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 9 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 9 states have call predecessors, (35), 9 states have call successors, (35) [2022-04-05 01:28:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:28:30,072 INFO L93 Difference]: Finished difference Result 153 states and 194 transitions. [2022-04-05 01:28:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 01:28:30,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 9 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 9 states have call predecessors, (35), 9 states have call successors, (35) Word has length 117 [2022-04-05 01:28:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:28:30,073 INFO L225 Difference]: With dead ends: 153 [2022-04-05 01:28:30,074 INFO L226 Difference]: Without dead ends: 130 [2022-04-05 01:28:30,074 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 223 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-05 01:28:30,074 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 3 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:28:30,074 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 217 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:28:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-04-05 01:28:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-04-05 01:28:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 82 states have internal predecessors, (91), 36 states have call successors, (36), 16 states have call predecessors, (36), 15 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 01:28:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 161 transitions. [2022-04-05 01:28:30,081 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 161 transitions. Word has length 117 [2022-04-05 01:28:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:28:30,082 INFO L478 AbstractCegarLoop]: Abstraction has 130 states and 161 transitions. [2022-04-05 01:28:30,082 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 9 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 9 states have call predecessors, (35), 9 states have call successors, (35) [2022-04-05 01:28:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 161 transitions. [2022-04-05 01:28:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-04-05 01:28:30,083 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:28:30,083 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:28:30,108 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 01:28:30,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:28:30,304 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:28:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:28:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash 525706014, now seen corresponding path program 3 times [2022-04-05 01:28:30,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:28:30,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114459869] [2022-04-05 01:28:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:28:30,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:28:30,312 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:28:30,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860402289] [2022-04-05 01:28:30,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 01:28:30,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:28:30,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:28:30,317 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 01:28:30,318 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 01:28:30,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 01:28:30,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 01:28:30,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-05 01:28:30,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:28:30,630 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 01:28:30,676 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 01:28:30,752 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 01:28:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-04-05 01:28:30,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:28:37,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:28:37,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114459869] [2022-04-05 01:28:37,759 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:28:37,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860402289] [2022-04-05 01:28:37,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860402289] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 01:28:37,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 01:28:37,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-05 01:28:37,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828301966] [2022-04-05 01:28:37,760 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 01:28:37,760 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 01:28:37,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:28:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 01:28:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-04-05 01:28:37,761 INFO L87 Difference]: Start difference. First operand 130 states and 161 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 01:28:37,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:28:37,846 INFO L93 Difference]: Finished difference Result 134 states and 164 transitions. [2022-04-05 01:28:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 01:28:37,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 118 [2022-04-05 01:28:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:28:37,848 INFO L225 Difference]: With dead ends: 134 [2022-04-05 01:28:37,848 INFO L226 Difference]: Without dead ends: 132 [2022-04-05 01:28:37,848 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-04-05 01:28:37,849 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:28:37,849 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 56 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:28:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-04-05 01:28:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2022-04-05 01:28:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 69 states have internal predecessors, (77), 28 states have call successors, (28), 16 states have call predecessors, (28), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 01:28:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2022-04-05 01:28:37,867 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 118 [2022-04-05 01:28:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:28:37,867 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2022-04-05 01:28:37,867 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 01:28:37,867 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2022-04-05 01:28:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-04-05 01:28:37,868 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:28:37,868 INFO L499 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:28:37,892 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 01:28:38,069 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,SelfDestructingSolverStorable11 [2022-04-05 01:28:38,069 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:28:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:28:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1635698089, now seen corresponding path program 3 times [2022-04-05 01:28:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:28:38,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121448680] [2022-04-05 01:28:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:28:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:28:38,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:28:38,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377015276] [2022-04-05 01:28:38,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 01:28:38,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:28:38,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:28:38,085 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 01:28:38,086 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 01:28:38,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 01:28:38,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 01:28:38,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 01:28:38,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:28:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-04-05 01:28:38,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:28:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-04-05 01:28:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:28:38,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121448680] [2022-04-05 01:28:38,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:28:38,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377015276] [2022-04-05 01:28:38,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377015276] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:28:38,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:28:38,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-04-05 01:28:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775637101] [2022-04-05 01:28:38,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:28:38,546 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 01:28:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:28:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 01:28:38,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-05 01:28:38,546 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-05 01:28:38,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:28:38,651 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2022-04-05 01:28:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 01:28:38,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 121 [2022-04-05 01:28:38,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:28:38,652 INFO L225 Difference]: With dead ends: 118 [2022-04-05 01:28:38,652 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 01:28:38,652 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-04-05 01:28:38,652 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:28:38,653 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 108 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:28:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 01:28:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 01:28:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 01:28:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 01:28:38,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2022-04-05 01:28:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:28:38,654 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 01:28:38,654 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-05 01:28:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 01:28:38,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 01:28:38,656 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 01:28:38,683 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 01:28:38,857 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,SelfDestructingSolverStorable12 [2022-04-05 01:28:38,859 INFO L719 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:28:38,860 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 01:28:38,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 01:28:38 BasicIcfg [2022-04-05 01:28:38,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 01:28:38,863 INFO L158 Benchmark]: Toolchain (without parser) took 61109.15ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 124.2MB in the beginning and 177.9MB in the end (delta: -53.8MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. [2022-04-05 01:28:38,863 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 01:28:38,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.48ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 124.0MB in the beginning and 237.5MB in the end (delta: -113.6MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. [2022-04-05 01:28:38,864 INFO L158 Benchmark]: Boogie Preprocessor took 41.76ms. Allocated memory is still 266.3MB. Free memory was 237.5MB in the beginning and 236.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 01:28:38,864 INFO L158 Benchmark]: RCFGBuilder took 252.28ms. Allocated memory is still 266.3MB. Free memory was 236.0MB in the beginning and 225.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 01:28:38,864 INFO L158 Benchmark]: IcfgTransformer took 46.65ms. Allocated memory is still 266.3MB. Free memory was 225.5MB in the beginning and 224.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 01:28:38,864 INFO L158 Benchmark]: TraceAbstraction took 60545.93ms. Allocated memory is still 266.3MB. Free memory was 223.9MB in the beginning and 177.9MB in the end (delta: 46.0MB). Peak memory consumption was 47.0MB. Max. memory is 8.0GB. [2022-04-05 01:28:38,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.48ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 124.0MB in the beginning and 237.5MB in the end (delta: -113.6MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.76ms. Allocated memory is still 266.3MB. Free memory was 237.5MB in the beginning and 236.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 252.28ms. Allocated memory is still 266.3MB. Free memory was 236.0MB in the beginning and 225.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 46.65ms. Allocated memory is still 266.3MB. Free memory was 225.5MB in the beginning and 224.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 60545.93ms. Allocated memory is still 266.3MB. Free memory was 223.9MB in the beginning and 177.9MB in the end (delta: 46.0MB). Peak memory consumption was 47.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.5s, OverallIterations: 13, TraceHistogramMax: 20, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 378 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 316 mSDsluCounter, 1555 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 447 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2187 IncrementalHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 447 mSolverCounterUnsat, 461 mSDtfsCounter, 2187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1477 GetRequests, 1334 SyntacticMatches, 22 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=10, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 75 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 38.5s InterpolantComputationTime, 867 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1442 ConstructedInterpolants, 0 QuantifiedInterpolants, 15881 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1855 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 6338/6540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-05 01:28:38,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...