/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/ps6-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 04:04:08,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 04:04:08,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 04:04:08,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 04:04:08,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 04:04:08,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 04:04:08,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 04:04:08,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 04:04:08,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 04:04:08,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 04:04:08,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 04:04:08,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 04:04:08,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 04:04:08,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 04:04:08,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 04:04:08,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 04:04:08,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 04:04:08,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 04:04:08,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 04:04:08,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 04:04:08,586 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 04:04:08,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 04:04:08,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 04:04:08,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 04:04:08,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 04:04:08,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 04:04:08,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 04:04:08,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 04:04:08,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 04:04:08,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 04:04:08,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 04:04:08,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 04:04:08,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 04:04:08,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 04:04:08,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 04:04:08,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 04:04:08,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 04:04:08,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 04:04:08,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 04:04:08,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 04:04:08,622 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 04:04:08,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 04:04:08,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 04:04:08,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 04:04:08,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 04:04:08,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 04:04:08,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 04:04:08,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 04:04:08,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:04:08,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 04:04:08,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 04:04:08,624 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 04:04:08,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 04:04:08,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 04:04:08,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 04:04:08,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 04:04:08,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 04:04:08,880 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 04:04:08,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound5.c [2022-04-05 04:04:08,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19c6cb0d/6b34134321654073a088d3d55a970b77/FLAG268de1961 [2022-04-05 04:04:09,336 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 04:04:09,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound5.c [2022-04-05 04:04:09,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19c6cb0d/6b34134321654073a088d3d55a970b77/FLAG268de1961 [2022-04-05 04:04:09,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19c6cb0d/6b34134321654073a088d3d55a970b77 [2022-04-05 04:04:09,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 04:04:09,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 04:04:09,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 04:04:09,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 04:04:09,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 04:04:09,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:04:09" (1/1) ... [2022-04-05 04:04:09,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714cd6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:09, skipping insertion in model container [2022-04-05 04:04:09,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:04:09" (1/1) ... [2022-04-05 04:04:09,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 04:04:09,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 04:04:09,953 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/ps6-ll_unwindbound5.c[458,471] [2022-04-05 04:04:09,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:04:09,982 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 04:04:09,997 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/ps6-ll_unwindbound5.c[458,471] [2022-04-05 04:04:10,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:04:10,036 INFO L208 MainTranslator]: Completed translation [2022-04-05 04:04:10,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10 WrapperNode [2022-04-05 04:04:10,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 04:04:10,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 04:04:10,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 04:04:10,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 04:04:10,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 04:04:10,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 04:04:10,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 04:04:10,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 04:04:10,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:04:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:10,121 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 04:04:10,138 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 04:04:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 04:04:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 04:04:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 04:04:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 04:04:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 04:04:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 04:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 04:04:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 04:04:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 04:04:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 04:04:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 04:04:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 04:04:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 04:04:10,211 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 04:04:10,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 04:04:10,319 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 04:04:10,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 04:04:10,341 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 04:04:10,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:04:10 BoogieIcfgContainer [2022-04-05 04:04:10,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 04:04:10,343 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 04:04:10,343 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 04:04:10,349 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 04:04:10,357 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:04:10" (1/1) ... [2022-04-05 04:04:10,359 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 04:04:10,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:04:10 BasicIcfg [2022-04-05 04:04:10,392 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 04:04:10,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 04:04:10,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 04:04:10,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 04:04:10,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 04:04:09" (1/4) ... [2022-04-05 04:04:10,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6184f0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:04:10, skipping insertion in model container [2022-04-05 04:04:10,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:04:10" (2/4) ... [2022-04-05 04:04:10,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6184f0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:04:10, skipping insertion in model container [2022-04-05 04:04:10,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:04:10" (3/4) ... [2022-04-05 04:04:10,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6184f0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:04:10, skipping insertion in model container [2022-04-05 04:04:10,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:04:10" (4/4) ... [2022-04-05 04:04:10,400 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound5.cJordan [2022-04-05 04:04:10,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 04:04:10,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 04:04:10,440 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 04:04:10,447 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 04:04:10,448 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 04:04:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 04:04:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-05 04:04:10,478 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:10,478 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:10,479 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:10,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:10,486 INFO L85 PathProgramCache]: Analyzing trace with hash 843387237, now seen corresponding path program 1 times [2022-04-05 04:04:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:10,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719465759] [2022-04-05 04:04:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:04:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:04:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:10,724 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 04:04:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:10,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719465759] [2022-04-05 04:04:10,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719465759] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:04:10,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:04:10,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 04:04:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863778186] [2022-04-05 04:04:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:04:10,730 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 04:04:10,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 04:04:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 04:04:10,758 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 04:04:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:10,833 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-05 04:04:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 04:04:10,837 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-05 04:04:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:10,842 INFO L225 Difference]: With dead ends: 30 [2022-04-05 04:04:10,842 INFO L226 Difference]: Without dead ends: 25 [2022-04-05 04:04:10,844 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 04:04:10,847 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:10,848 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:04:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-05 04:04:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-04-05 04:04:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 04:04:10,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-04-05 04:04:10,879 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2022-04-05 04:04:10,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:10,880 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-04-05 04:04:10,881 INFO L479 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 04:04:10,881 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-05 04:04:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-05 04:04:10,882 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:10,882 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:10,882 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 04:04:10,882 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 208087835, now seen corresponding path program 1 times [2022-04-05 04:04:10,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:10,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789036423] [2022-04-05 04:04:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:10,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:10,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:10,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741969969] [2022-04-05 04:04:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:10,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:10,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:10,919 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 04:04:10,920 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 04:04:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:10,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 04:04:11,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:11,122 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 04:04:11,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 04:04:11,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789036423] [2022-04-05 04:04:11,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741969969] [2022-04-05 04:04:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741969969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:04:11,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:04:11,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 04:04:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151206239] [2022-04-05 04:04:11,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:04:11,125 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 04:04:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 04:04:11,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 04:04:11,126 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 04:04:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:11,142 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-05 04:04:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 04:04:11,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-05 04:04:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:11,145 INFO L225 Difference]: With dead ends: 26 [2022-04-05 04:04:11,148 INFO L226 Difference]: Without dead ends: 26 [2022-04-05 04:04:11,148 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 04:04:11,153 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:11,154 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:04:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-05 04:04:11,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-05 04:04:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 04:04:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-04-05 04:04:11,159 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2022-04-05 04:04:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:11,159 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-04-05 04:04:11,159 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 04:04:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-05 04:04:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-05 04:04:11,160 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:11,160 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:11,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 04:04:11,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:11,361 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash 209190102, now seen corresponding path program 1 times [2022-04-05 04:04:11,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:11,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079921600] [2022-04-05 04:04:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:11,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:11,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:11,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9406535] [2022-04-05 04:04:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:11,397 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 04:04:11,400 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 04:04:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:11,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 04:04:11,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:11,542 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 04:04:11,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 04:04:11,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:11,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079921600] [2022-04-05 04:04:11,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:11,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9406535] [2022-04-05 04:04:11,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9406535] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:04:11,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:04:11,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 04:04:11,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575854608] [2022-04-05 04:04:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:04:11,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 04:04:11,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 04:04:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 04:04:11,545 INFO L87 Difference]: Start difference. First operand 26 states and 29 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 04:04:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:11,627 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-05 04:04:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 04:04:11,627 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-05 04:04:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:11,628 INFO L225 Difference]: With dead ends: 34 [2022-04-05 04:04:11,628 INFO L226 Difference]: Without dead ends: 32 [2022-04-05 04:04:11,629 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 04:04:11,629 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:11,630 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 87 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:04:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-05 04:04:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-05 04:04:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 04:04:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-05 04:04:11,636 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2022-04-05 04:04:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:11,636 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-05 04:04:11,636 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-05 04:04:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-05 04:04:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-05 04:04:11,637 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:11,637 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:11,655 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 04:04:11,843 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 04:04:11,844 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1223799235, now seen corresponding path program 1 times [2022-04-05 04:04:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:11,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910795661] [2022-04-05 04:04:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:11,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:11,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:11,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556421739] [2022-04-05 04:04:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:11,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:11,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:11,872 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 04:04:11,880 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 04:04:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:11,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 04:04:11,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:04:12,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:04:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:04:12,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:12,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910795661] [2022-04-05 04:04:12,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:12,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556421739] [2022-04-05 04:04:12,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556421739] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 04:04:12,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 04:04:12,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-05 04:04:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567962330] [2022-04-05 04:04:12,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 04:04:12,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:04:12,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:04:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:04:12,142 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 04:04:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:12,303 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2022-04-05 04:04:12,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 04:04:12,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2022-04-05 04:04:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:12,305 INFO L225 Difference]: With dead ends: 58 [2022-04-05 04:04:12,305 INFO L226 Difference]: Without dead ends: 58 [2022-04-05 04:04:12,306 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-05 04:04:12,307 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:12,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 128 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:04:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-04-05 04:04:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2022-04-05 04:04:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 37 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 04:04:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-04-05 04:04:12,315 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 26 [2022-04-05 04:04:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:12,315 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-04-05 04:04:12,316 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 04:04:12,316 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-04-05 04:04:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-05 04:04:12,316 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:12,316 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:12,337 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 04:04:12,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:12,528 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1222696968, now seen corresponding path program 1 times [2022-04-05 04:04:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554574886] [2022-04-05 04:04:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:12,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:12,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:12,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007700522] [2022-04-05 04:04:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:12,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:12,544 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 04:04:12,557 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 04:04:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 04:04:12,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:04:12,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:04:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-05 04:04:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:12,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554574886] [2022-04-05 04:04:12,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:12,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007700522] [2022-04-05 04:04:12,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007700522] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 04:04:12,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:04:12,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-05 04:04:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391236039] [2022-04-05 04:04:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:04:12,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 04:04:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 04:04:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-05 04:04:12,851 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 04:04:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:12,888 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2022-04-05 04:04:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 04:04:12,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 26 [2022-04-05 04:04:12,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:12,890 INFO L225 Difference]: With dead ends: 66 [2022-04-05 04:04:12,890 INFO L226 Difference]: Without dead ends: 60 [2022-04-05 04:04:12,890 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:04:12,891 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:12,891 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:04:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-05 04:04:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2022-04-05 04:04:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 38 states have internal predecessors, (40), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 04:04:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2022-04-05 04:04:12,898 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 26 [2022-04-05 04:04:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:12,899 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2022-04-05 04:04:12,899 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 04:04:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2022-04-05 04:04:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-05 04:04:12,900 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:12,900 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:12,915 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 04:04:13,104 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:13,105 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash 96926796, now seen corresponding path program 1 times [2022-04-05 04:04:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:13,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688533879] [2022-04-05 04:04:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:13,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:13,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184239676] [2022-04-05 04:04:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:13,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:13,117 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 04:04:13,152 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 04:04:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:13,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 04:04:13,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 04:04:13,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:04:13,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:13,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688533879] [2022-04-05 04:04:13,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:13,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184239676] [2022-04-05 04:04:13,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184239676] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 04:04:13,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:04:13,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-04-05 04:04:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692330602] [2022-04-05 04:04:13,547 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 04:04:13,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 04:04:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 04:04:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-05 04:04:13,549 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-05 04:04:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:13,609 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-04-05 04:04:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 04:04:13,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2022-04-05 04:04:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:13,611 INFO L225 Difference]: With dead ends: 57 [2022-04-05 04:04:13,611 INFO L226 Difference]: Without dead ends: 53 [2022-04-05 04:04:13,611 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:04:13,612 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:13,612 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:04:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-05 04:04:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-04-05 04:04:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 37 states have internal predecessors, (39), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 04:04:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-04-05 04:04:13,619 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 37 [2022-04-05 04:04:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:13,619 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-04-05 04:04:13,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-05 04:04:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-04-05 04:04:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-05 04:04:13,620 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:13,620 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 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 04:04:13,643 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 04:04:13,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:13,836 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash -678596118, now seen corresponding path program 2 times [2022-04-05 04:04:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:13,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113383418] [2022-04-05 04:04:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:13,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:13,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334663819] [2022-04-05 04:04:13,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 04:04:13,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:13,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:13,853 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 04:04:13,853 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 04:04:13,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 04:04:13,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 04:04:13,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-05 04:04:13,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 04:04:14,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:04:14,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:14,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113383418] [2022-04-05 04:04:14,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:14,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334663819] [2022-04-05 04:04:14,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334663819] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 04:04:14,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:04:14,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-04-05 04:04:14,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100803948] [2022-04-05 04:04:14,385 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 04:04:14,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:04:14,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:04:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-05 04:04:14,386 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 04:04:14,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:14,485 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2022-04-05 04:04:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:04:14,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2022-04-05 04:04:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:14,488 INFO L225 Difference]: With dead ends: 56 [2022-04-05 04:04:14,488 INFO L226 Difference]: Without dead ends: 52 [2022-04-05 04:04:14,488 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 04:04:14,490 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:14,490 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 179 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:04:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-05 04:04:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-04-05 04:04:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 04:04:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2022-04-05 04:04:14,503 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 45 [2022-04-05 04:04:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:14,503 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2022-04-05 04:04:14,503 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-05 04:04:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2022-04-05 04:04:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 04:04:14,504 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:14,504 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:14,515 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 04:04:14,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:14,714 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1280010632, now seen corresponding path program 3 times [2022-04-05 04:04:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:14,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613518848] [2022-04-05 04:04:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:14,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:14,725 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:14,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209075485] [2022-04-05 04:04:14,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 04:04:14,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:14,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:14,726 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 04:04:14,736 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 04:04:15,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 04:04:15,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 04:04:15,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-05 04:04:15,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 04:04:15,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:04:15,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:15,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613518848] [2022-04-05 04:04:15,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:15,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209075485] [2022-04-05 04:04:15,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209075485] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 04:04:15,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:04:15,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-05 04:04:15,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419668745] [2022-04-05 04:04:15,558 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 04:04:15,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 04:04:15,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 04:04:15,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:04:15,560 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-04-05 04:04:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:15,669 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2022-04-05 04:04:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 04:04:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 53 [2022-04-05 04:04:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:15,672 INFO L225 Difference]: With dead ends: 58 [2022-04-05 04:04:15,672 INFO L226 Difference]: Without dead ends: 54 [2022-04-05 04:04:15,672 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-04-05 04:04:15,673 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:15,673 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 221 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:04:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-04-05 04:04:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-04-05 04:04:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 04:04:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2022-04-05 04:04:15,676 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 53 [2022-04-05 04:04:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:15,677 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2022-04-05 04:04:15,677 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-04-05 04:04:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2022-04-05 04:04:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 04:04:15,678 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:15,678 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:15,685 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 04:04:15,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:15,878 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:15,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:15,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1735624483, now seen corresponding path program 1 times [2022-04-05 04:04:15,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:15,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419097230] [2022-04-05 04:04:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:15,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:15,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:15,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219665650] [2022-04-05 04:04:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:15,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:15,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:15,890 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 04:04:15,891 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 04:04:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:04:15,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 04:04:15,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-05 04:04:16,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:04:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 04:04:16,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:16,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419097230] [2022-04-05 04:04:16,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:16,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219665650] [2022-04-05 04:04:16,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219665650] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 04:04:16,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 04:04:16,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-04-05 04:04:16,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046943975] [2022-04-05 04:04:16,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 04:04:16,163 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:04:16,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:04:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:04:16,164 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-04-05 04:04:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:16,232 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2022-04-05 04:04:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 04:04:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 55 [2022-04-05 04:04:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:16,233 INFO L225 Difference]: With dead ends: 60 [2022-04-05 04:04:16,233 INFO L226 Difference]: Without dead ends: 60 [2022-04-05 04:04:16,234 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:04:16,234 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:16,234 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 96 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 04:04:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-05 04:04:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-04-05 04:04:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 04:04:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2022-04-05 04:04:16,238 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 55 [2022-04-05 04:04:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:16,239 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2022-04-05 04:04:16,239 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-04-05 04:04:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2022-04-05 04:04:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 04:04:16,240 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:16,240 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:16,259 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 04:04:16,451 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-05 04:04:16,452 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:16,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1029628710, now seen corresponding path program 4 times [2022-04-05 04:04:16,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:16,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202166881] [2022-04-05 04:04:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:16,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:16,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:16,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33656235] [2022-04-05 04:04:16,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 04:04:16,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:16,463 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 04:04:16,476 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 04:04:16,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 04:04:16,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 04:04:16,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2022-04-05 04:04:16,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 04:04:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 04:04:16,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 04:04:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:04:16,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202166881] [2022-04-05 04:04:16,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 04:04:16,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33656235] [2022-04-05 04:04:16,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33656235] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 04:04:16,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 04:04:16,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-04-05 04:04:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719556407] [2022-04-05 04:04:16,911 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 04:04:16,913 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 04:04:16,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:04:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 04:04:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-05 04:04:16,914 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-04-05 04:04:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:04:17,046 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-04-05 04:04:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 04:04:17,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 61 [2022-04-05 04:04:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:04:17,047 INFO L225 Difference]: With dead ends: 66 [2022-04-05 04:04:17,047 INFO L226 Difference]: Without dead ends: 62 [2022-04-05 04:04:17,047 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-04-05 04:04:17,048 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:04:17,048 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 267 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:04:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-04-05 04:04:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-04-05 04:04:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 04:04:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2022-04-05 04:04:17,052 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 61 [2022-04-05 04:04:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:04:17,052 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2022-04-05 04:04:17,052 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 7 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-04-05 04:04:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2022-04-05 04:04:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 04:04:17,053 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:04:17,053 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:04:17,077 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 04:04:17,254 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 04:04:17,254 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:04:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:04:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1636766017, now seen corresponding path program 2 times [2022-04-05 04:04:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:04:17,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278694835] [2022-04-05 04:04:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:04:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:04:17,265 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 04:04:17,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698799499] [2022-04-05 04:04:17,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 04:04:17,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 04:04:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:04:17,267 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 04:04:17,271 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 04:04:17,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 04:04:17,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-05 04:04:17,731 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 04:04:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 04:04:17,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 04:04:17,835 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 04:04:17,838 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 04:04:17,848 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 04:04:18,045 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 04:04:18,048 INFO L719 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2022-04-05 04:04:18,051 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 04:04:18,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:04:18 BasicIcfg [2022-04-05 04:04:18,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 04:04:18,084 INFO L158 Benchmark]: Toolchain (without parser) took 8312.74ms. Allocated memory was 200.3MB in the beginning and 243.3MB in the end (delta: 43.0MB). Free memory was 151.5MB in the beginning and 159.7MB in the end (delta: -8.2MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. [2022-04-05 04:04:18,084 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 200.3MB. Free memory is still 167.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 04:04:18,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.54ms. Allocated memory is still 200.3MB. Free memory was 151.3MB in the beginning and 179.0MB in the end (delta: -27.7MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-04-05 04:04:18,085 INFO L158 Benchmark]: Boogie Preprocessor took 43.37ms. Allocated memory is still 200.3MB. Free memory was 179.0MB in the beginning and 177.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 04:04:18,085 INFO L158 Benchmark]: RCFGBuilder took 261.06ms. Allocated memory is still 200.3MB. Free memory was 177.4MB in the beginning and 167.5MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-05 04:04:18,085 INFO L158 Benchmark]: IcfgTransformer took 48.85ms. Allocated memory is still 200.3MB. Free memory was 167.5MB in the beginning and 166.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 04:04:18,085 INFO L158 Benchmark]: TraceAbstraction took 7690.54ms. Allocated memory was 200.3MB in the beginning and 243.3MB in the end (delta: 43.0MB). Free memory was 165.7MB in the beginning and 159.7MB in the end (delta: 6.0MB). Peak memory consumption was 49.7MB. Max. memory is 8.0GB. [2022-04-05 04:04:18,087 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 200.3MB. Free memory is still 167.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.54ms. Allocated memory is still 200.3MB. Free memory was 151.3MB in the beginning and 179.0MB in the end (delta: -27.7MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.37ms. Allocated memory is still 200.3MB. Free memory was 179.0MB in the beginning and 177.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 261.06ms. Allocated memory is still 200.3MB. Free memory was 177.4MB in the beginning and 167.5MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 48.85ms. Allocated memory is still 200.3MB. Free memory was 167.5MB in the beginning and 166.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 7690.54ms. Allocated memory was 200.3MB in the beginning and 243.3MB in the end (delta: 43.0MB). Free memory was 165.7MB in the beginning and 159.7MB in the end (delta: 6.0MB). Peak memory consumption was 49.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [\old(counter)=8, counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L7] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L22] RET assume_abort_if_not(k <= 256) VAL [\old(counter)=0, counter=0, k=6] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=6, x=0, y=0] [L28] EXPR counter++ VAL [\old(counter)=0, c=0, counter=1, counter++=0, k=6, x=0, y=0] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=0, counter=1, k=6, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=6, x=1, y=1] [L28] EXPR counter++ VAL [\old(counter)=0, c=1, counter=2, counter++=1, k=6, x=1, y=1] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=1, counter=2, k=6, x=1, y=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=2, counter=2, k=6, x=33, y=2] [L28] EXPR counter++ VAL [\old(counter)=0, c=2, counter=3, counter++=2, k=6, x=33, y=2] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=2, counter=3, k=6, x=33, y=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=3, counter=3, k=6, x=276, y=3] [L28] EXPR counter++ VAL [\old(counter)=0, c=3, counter=4, counter++=3, k=6, x=276, y=3] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=3, counter=4, k=6, x=276, y=3] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=4, counter=4, k=6, x=1300, y=4] [L28] EXPR counter++ VAL [\old(counter)=0, c=4, counter=5, counter++=4, k=6, x=1300, y=4] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=4, counter=5, k=6, x=1300, y=4] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=5, counter=5, k=6, x=4425, y=5] [L28] EXPR counter++ VAL [\old(counter)=0, c=5, counter=6, counter++=5, k=6, x=4425, y=5] [L28] COND FALSE !(counter++<5) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=5, counter=6, k=6, x=4425, y=5] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, \old(counter)=0, counter=6] [L10] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] [L12] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 1289 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 980 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 550 IncrementalHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 309 mSDtfsCounter, 550 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 452 SyntacticMatches, 7 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=10, InterpolantAutomatonStates: 73, 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, 10 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 419 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 1589 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1084 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 259/434 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-05 04:04:18,106 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...