/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 19:37:44,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 19:37:44,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 19:37:44,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-23 19:37:44,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 19:37:44,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 19:37:44,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 19:37:44,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 19:37:44,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 19:37:44,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 19:37:44,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 19:37:44,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 19:37:44,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 19:37:44,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 19:37:44,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 19:37:44,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 19:37:44,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 19:37:44,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 19:37:44,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 19:37:44,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 19:37:44,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 19:37:44,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 19:37:44,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 19:37:44,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 19:37:44,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 19:37:44,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 19:37:44,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 19:37:44,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 19:37:44,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 19:37:44,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 19:37:44,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 19:37:44,111 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 19:37:44,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 19:37:44,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 19:37:44,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 19:37:44,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 19:37:44,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 19:37:44,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 19:37:44,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 19:37:44,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:37:44,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 19:37:44,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 19:37:44,113 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 19:37:44,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 19:37:44,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 19:37:44,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 19:37:44,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 19:37:44,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 19:37:44,295 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 19:37:44,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c [2022-02-23 19:37:44,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f77b674/e63f645caf1b44fdab6805d9df315836/FLAG3d1e2b903 [2022-02-23 19:37:44,731 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 19:37:44,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c [2022-02-23 19:37:44,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f77b674/e63f645caf1b44fdab6805d9df315836/FLAG3d1e2b903 [2022-02-23 19:37:44,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f77b674/e63f645caf1b44fdab6805d9df315836 [2022-02-23 19:37:44,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 19:37:44,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 19:37:44,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 19:37:44,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 19:37:44,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 19:37:44,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182d1d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44, skipping insertion in model container [2022-02-23 19:37:44,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 19:37:44,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 19:37:44,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c[458,471] [2022-02-23 19:37:44,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:37:44,926 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 19:37:44,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c[458,471] [2022-02-23 19:37:44,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 19:37:44,945 INFO L208 MainTranslator]: Completed translation [2022-02-23 19:37:44,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44 WrapperNode [2022-02-23 19:37:44,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 19:37:44,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 19:37:44,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 19:37:44,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 19:37:44,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 19:37:44,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 19:37:44,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 19:37:44,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 19:37:44,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (1/1) ... [2022-02-23 19:37:44,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 19:37:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:37:44,986 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) [2022-02-23 19:37:45,004 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 [2022-02-23 19:37:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 19:37:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 19:37:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 19:37:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 19:37:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 19:37:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 19:37:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 19:37:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 19:37:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 19:37:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 19:37:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-02-23 19:37:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 19:37:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 19:37:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 19:37:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 19:37:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 19:37:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 19:37:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 19:37:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 19:37:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 19:37:45,067 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 19:37:45,068 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 19:37:45,201 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 19:37:45,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 19:37:45,205 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 19:37:45,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:37:45 BoogieIcfgContainer [2022-02-23 19:37:45,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 19:37:45,207 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 19:37:45,207 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 19:37:45,208 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 19:37:45,210 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:37:45" (1/1) ... [2022-02-23 19:37:45,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:37:45 BasicIcfg [2022-02-23 19:37:45,221 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 19:37:45,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 19:37:45,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 19:37:45,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 19:37:45,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:37:44" (1/4) ... [2022-02-23 19:37:45,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc3c0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:37:45, skipping insertion in model container [2022-02-23 19:37:45,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:37:44" (2/4) ... [2022-02-23 19:37:45,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc3c0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:37:45, skipping insertion in model container [2022-02-23 19:37:45,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:37:45" (3/4) ... [2022-02-23 19:37:45,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc3c0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:37:45, skipping insertion in model container [2022-02-23 19:37:45,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 07:37:45" (4/4) ... [2022-02-23 19:37:45,230 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.cJordan [2022-02-23 19:37:45,234 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 19:37:45,234 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 19:37:45,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 19:37:45,278 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 19:37:45,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 19:37:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 19:37:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-23 19:37:45,298 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:37:45,298 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:37:45,299 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:37:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:37:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1187991702, now seen corresponding path program 1 times [2022-02-23 19:37:45,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:37:45,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084376388] [2022-02-23 19:37:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:45,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:37:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:37:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 19:37:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:37:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 19:37:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:37:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-23 19:37:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:37:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 19:37:45,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:37:45,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084376388] [2022-02-23 19:37:45,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084376388] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:37:45,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:37:45,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 19:37:45,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209432844] [2022-02-23 19:37:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:37:45,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 19:37:45,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:37:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 19:37:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 19:37:45,543 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 19:37:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:37:45,594 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-02-23 19:37:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 19:37:45,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-02-23 19:37:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:37:45,601 INFO L225 Difference]: With dead ends: 29 [2022-02-23 19:37:45,601 INFO L226 Difference]: Without dead ends: 24 [2022-02-23 19:37:45,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 19:37:45,606 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:37:45,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 19:37:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-23 19:37:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-23 19:37:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 19:37:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-02-23 19:37:45,635 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-02-23 19:37:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:37:45,636 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-02-23 19:37:45,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-23 19:37:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-02-23 19:37:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-23 19:37:45,639 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:37:45,639 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:37:45,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 19:37:45,639 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:37:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:37:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash 793962506, now seen corresponding path program 1 times [2022-02-23 19:37:45,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:37:45,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847221221] [2022-02-23 19:37:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:45,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:37:45,657 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:37:45,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376422136] [2022-02-23 19:37:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:45,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:45,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:37:45,659 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) [2022-02-23 19:37:45,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 19:37:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:37:45,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 19:37:45,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:37:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 19:37:45,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 19:37:45,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:37:45,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847221221] [2022-02-23 19:37:45,826 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:37:45,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376422136] [2022-02-23 19:37:45,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376422136] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 19:37:45,826 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 19:37:45,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 19:37:45,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291637938] [2022-02-23 19:37:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:37:45,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 19:37:45,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:37:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 19:37:45,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 19:37:45,828 INFO L87 Difference]: Start difference. First operand 24 states and 27 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:37:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:37:45,866 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-02-23 19:37:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 19:37:45,867 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-02-23 19:37:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:37:45,867 INFO L225 Difference]: With dead ends: 33 [2022-02-23 19:37:45,868 INFO L226 Difference]: Without dead ends: 31 [2022-02-23 19:37:45,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-23 19:37:45,869 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:37:45,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 19:37:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-23 19:37:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-23 19:37:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 19:37:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-23 19:37:45,874 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-02-23 19:37:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:37:45,874 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-23 19:37:45,874 INFO L471 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-23 19:37:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-23 19:37:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-23 19:37:45,875 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:37:45,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:37:45,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 19:37:46,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:46,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:37:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:37:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash -503871754, now seen corresponding path program 1 times [2022-02-23 19:37:46,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:37:46,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274588038] [2022-02-23 19:37:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:46,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:37:46,105 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:37:46,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838287810] [2022-02-23 19:37:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:46,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:46,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:37:46,114 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) [2022-02-23 19:37:46,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 19:37:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:37:46,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-23 19:37:46,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:37:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 19:37:46,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:37:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-23 19:37:46,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:37:46,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274588038] [2022-02-23 19:37:46,485 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:37:46,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838287810] [2022-02-23 19:37:46,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838287810] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-23 19:37:46,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-23 19:37:46,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-02-23 19:37:46,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964080541] [2022-02-23 19:37:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 19:37:46,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 19:37:46,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:37:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 19:37:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-23 19:37:46,487 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (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) [2022-02-23 19:37:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:37:46,573 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-02-23 19:37:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 19:37:46,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (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 29 [2022-02-23 19:37:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:37:46,575 INFO L225 Difference]: With dead ends: 35 [2022-02-23 19:37:46,575 INFO L226 Difference]: Without dead ends: 33 [2022-02-23 19:37:46,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 19:37:46,576 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 19:37:46,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 19:37:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-23 19:37:46,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-23 19:37:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 19:37:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-02-23 19:37:46,580 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-02-23 19:37:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:37:46,581 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-02-23 19:37:46,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (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) [2022-02-23 19:37:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-02-23 19:37:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-23 19:37:46,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:37:46,582 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:37:46,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 19:37:46,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-23 19:37:46,786 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:37:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:37:46,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1285656823, now seen corresponding path program 1 times [2022-02-23 19:37:46,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:37:46,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129492708] [2022-02-23 19:37:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:46,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:37:46,796 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:37:46,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688359895] [2022-02-23 19:37:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:46,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:46,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:37:46,802 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) [2022-02-23 19:37:46,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 19:37:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 19:37:46,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-23 19:37:46,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:37:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-23 19:37:47,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:37:47,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:37:47,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129492708] [2022-02-23 19:37:47,149 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:37:47,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688359895] [2022-02-23 19:37:47,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688359895] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 19:37:47,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 19:37:47,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-02-23 19:37:47,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611412463] [2022-02-23 19:37:47,150 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 19:37:47,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 19:37:47,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:37:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 19:37:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-23 19:37:47,151 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-23 19:37:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:37:47,202 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-02-23 19:37:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 19:37:47,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-02-23 19:37:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:37:47,203 INFO L225 Difference]: With dead ends: 40 [2022-02-23 19:37:47,204 INFO L226 Difference]: Without dead ends: 36 [2022-02-23 19:37:47,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-23 19:37:47,204 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:37:47,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 155 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 19:37:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-23 19:37:47,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-23 19:37:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 19:37:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-02-23 19:37:47,208 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-02-23 19:37:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:37:47,208 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-02-23 19:37:47,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-23 19:37:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-02-23 19:37:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-23 19:37:47,209 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:37:47,209 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:37:47,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 19:37:47,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:47,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:37:47,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:37:47,418 INFO L85 PathProgramCache]: Analyzing trace with hash -542323485, now seen corresponding path program 2 times [2022-02-23 19:37:47,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:37:47,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227232481] [2022-02-23 19:37:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:47,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:37:47,426 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:37:47,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136289074] [2022-02-23 19:37:47,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 19:37:47,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:47,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:37:47,429 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) [2022-02-23 19:37:47,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 19:37:47,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 19:37:47,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 19:37:47,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-23 19:37:47,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:37:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-23 19:37:47,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:37:47,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:37:47,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227232481] [2022-02-23 19:37:47,833 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:37:47,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136289074] [2022-02-23 19:37:47,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136289074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 19:37:47,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 19:37:47,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-02-23 19:37:47,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436964698] [2022-02-23 19:37:47,834 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 19:37:47,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 19:37:47,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:37:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 19:37:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-23 19:37:47,836 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-23 19:37:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:37:47,894 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-02-23 19:37:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 19:37:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-02-23 19:37:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:37:47,895 INFO L225 Difference]: With dead ends: 43 [2022-02-23 19:37:47,895 INFO L226 Difference]: Without dead ends: 39 [2022-02-23 19:37:47,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:37:47,896 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:37:47,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 195 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 19:37:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-23 19:37:47,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-23 19:37:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-23 19:37:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-02-23 19:37:47,900 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-02-23 19:37:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:37:47,900 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-02-23 19:37:47,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-23 19:37:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-02-23 19:37:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-23 19:37:47,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 19:37:47,901 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 19:37:47,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-23 19:37:48,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:48,105 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 19:37:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 19:37:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2094100617, now seen corresponding path program 3 times [2022-02-23 19:37:48,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 19:37:48,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351194903] [2022-02-23 19:37:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 19:37:48,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 19:37:48,116 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 19:37:48,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629674788] [2022-02-23 19:37:48,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 19:37:48,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 19:37:48,128 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) [2022-02-23 19:37:48,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 19:37:48,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-23 19:37:48,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 19:37:48,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-23 19:37:48,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 19:37:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-23 19:37:48,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 19:37:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-02-23 19:37:48,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 19:37:48,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351194903] [2022-02-23 19:37:48,442 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 19:37:48,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629674788] [2022-02-23 19:37:48,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629674788] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 19:37:48,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 19:37:48,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-02-23 19:37:48,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802601820] [2022-02-23 19:37:48,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 19:37:48,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 19:37:48,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 19:37:48,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 19:37:48,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-23 19:37:48,444 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-02-23 19:37:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 19:37:48,474 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-02-23 19:37:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 19:37:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 54 [2022-02-23 19:37:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 19:37:48,475 INFO L225 Difference]: With dead ends: 32 [2022-02-23 19:37:48,475 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 19:37:48,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-23 19:37:48,478 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 19:37:48,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 19:37:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 19:37:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 19:37:48,480 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) [2022-02-23 19:37:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 19:37:48,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-02-23 19:37:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 19:37:48,480 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 19:37:48,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-02-23 19:37:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 19:37:48,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 19:37:48,482 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 19:37:48,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-23 19:37:48,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 19:37:48,688 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-02-23 19:37:48,689 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 19:37:48,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:37:48 BasicIcfg [2022-02-23 19:37:48,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 19:37:48,691 INFO L158 Benchmark]: Toolchain (without parser) took 3936.31ms. Allocated memory was 176.2MB in the beginning and 268.4MB in the end (delta: 92.3MB). Free memory was 122.7MB in the beginning and 205.7MB in the end (delta: -82.9MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-02-23 19:37:48,691 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 19:37:48,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.74ms. Allocated memory was 176.2MB in the beginning and 268.4MB in the end (delta: 92.3MB). Free memory was 122.6MB in the beginning and 240.1MB in the end (delta: -117.6MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-02-23 19:37:48,692 INFO L158 Benchmark]: Boogie Preprocessor took 16.92ms. Allocated memory is still 268.4MB. Free memory was 240.1MB in the beginning and 238.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 19:37:48,692 INFO L158 Benchmark]: RCFGBuilder took 242.85ms. Allocated memory is still 268.4MB. Free memory was 238.6MB in the beginning and 228.4MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-23 19:37:48,692 INFO L158 Benchmark]: IcfgTransformer took 14.11ms. Allocated memory is still 268.4MB. Free memory was 228.4MB in the beginning and 227.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 19:37:48,692 INFO L158 Benchmark]: TraceAbstraction took 3468.43ms. Allocated memory is still 268.4MB. Free memory was 226.5MB in the beginning and 205.7MB in the end (delta: 20.8MB). Peak memory consumption was 21.2MB. Max. memory is 8.0GB. [2022-02-23 19:37:48,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.74ms. Allocated memory was 176.2MB in the beginning and 268.4MB in the end (delta: 92.3MB). Free memory was 122.6MB in the beginning and 240.1MB in the end (delta: -117.6MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.92ms. Allocated memory is still 268.4MB. Free memory was 240.1MB in the beginning and 238.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 242.85ms. Allocated memory is still 268.4MB. Free memory was 238.6MB in the beginning and 228.4MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 14.11ms. Allocated memory is still 268.4MB. Free memory was 228.4MB in the beginning and 227.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3468.43ms. Allocated memory is still 268.4MB. Free memory was 226.5MB in the beginning and 205.7MB in the end (delta: 20.8MB). Peak memory consumption was 21.2MB. 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 499 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 159 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 825 SizeOfPredicates, 7 NumberOfNonLiveVariables, 561 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 218/238 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! [2022-02-23 19:37:48,707 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...