/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/fermat1-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 02:35:20,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 02:35:20,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 02:35:20,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 02:35:20,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 02:35:20,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 02:35:20,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 02:35:20,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 02:35:20,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 02:35:20,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 02:35:20,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 02:35:20,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 02:35:20,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 02:35:20,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 02:35:20,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 02:35:20,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 02:35:20,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 02:35:20,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 02:35:20,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 02:35:20,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 02:35:20,523 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 02:35:20,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 02:35:20,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 02:35:20,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 02:35:20,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 02:35:20,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 02:35:20,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 02:35:20,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 02:35:20,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 02:35:20,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 02:35:20,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 02:35:20,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 02:35:20,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 02:35:20,542 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 02:35:20,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 02:35:20,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 02:35:20,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 02:35:20,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 02:35:20,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 02:35:20,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 02:35:20,543 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 02:35:20,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 02:35:20,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 02:35:20,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 02:35:20,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 02:35:20,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 02:35:20,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 02:35:20,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 02:35:20,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:35:20,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 02:35:20,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 02:35:20,545 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 02:35:20,545 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 02:35:20,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 02:35:20,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 02:35:20,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 02:35:20,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 02:35:20,768 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 02:35:20,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound5.c [2022-04-05 02:35:20,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ce04c11/bc7d4b4385b74b0f9dea59c097f16113/FLAG623886b21 [2022-04-05 02:35:21,130 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 02:35:21,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound5.c [2022-04-05 02:35:21,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ce04c11/bc7d4b4385b74b0f9dea59c097f16113/FLAG623886b21 [2022-04-05 02:35:21,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ce04c11/bc7d4b4385b74b0f9dea59c097f16113 [2022-04-05 02:35:21,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 02:35:21,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 02:35:21,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 02:35:21,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 02:35:21,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 02:35:21,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c93e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21, skipping insertion in model container [2022-04-05 02:35:21,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 02:35:21,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 02:35:21,731 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/fermat1-ll_unwindbound5.c[535,548] [2022-04-05 02:35:21,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:35:21,758 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 02:35:21,774 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/fermat1-ll_unwindbound5.c[535,548] [2022-04-05 02:35:21,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:35:21,790 INFO L208 MainTranslator]: Completed translation [2022-04-05 02:35:21,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21 WrapperNode [2022-04-05 02:35:21,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 02:35:21,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 02:35:21,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 02:35:21,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 02:35:21,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 02:35:21,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 02:35:21,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 02:35:21,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 02:35:21,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (1/1) ... [2022-04-05 02:35:21,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:35:21,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:21,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 02:35:21,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 02:35:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 02:35:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 02:35:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 02:35:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 02:35:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 02:35:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 02:35:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 02:35:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 02:35:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 02:35:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 02:35:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 02:35:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 02:35:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 02:35:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 02:35:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 02:35:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 02:35:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 02:35:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 02:35:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 02:35:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 02:35:21,947 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 02:35:21,948 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 02:35:22,070 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 02:35:22,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 02:35:22,075 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-05 02:35:22,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:35:22 BoogieIcfgContainer [2022-04-05 02:35:22,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 02:35:22,077 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 02:35:22,077 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 02:35:22,078 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 02:35:22,079 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:35:22" (1/1) ... [2022-04-05 02:35:22,081 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 02:35:22,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:35:22 BasicIcfg [2022-04-05 02:35:22,094 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 02:35:22,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 02:35:22,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 02:35:22,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 02:35:22,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:35:21" (1/4) ... [2022-04-05 02:35:22,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d418e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:35:22, skipping insertion in model container [2022-04-05 02:35:22,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:35:21" (2/4) ... [2022-04-05 02:35:22,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d418e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:35:22, skipping insertion in model container [2022-04-05 02:35:22,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:35:22" (3/4) ... [2022-04-05 02:35:22,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d418e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:35:22, skipping insertion in model container [2022-04-05 02:35:22,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:35:22" (4/4) ... [2022-04-05 02:35:22,099 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound5.cJordan [2022-04-05 02:35:22,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 02:35:22,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 02:35:22,144 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 02:35:22,161 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 02:35:22,162 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 02:35:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 02:35:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-05 02:35:22,176 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:22,177 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:22,177 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -758992103, now seen corresponding path program 1 times [2022-04-05 02:35:22,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:22,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989780418] [2022-04-05 02:35:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:22,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:22,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:22,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071070381] [2022-04-05 02:35:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:22,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:22,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:22,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:22,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 02:35:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-05 02:35:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-05 02:35:22,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:35:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:22,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989780418] [2022-04-05 02:35:22,404 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:22,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071070381] [2022-04-05 02:35:22,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071070381] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:35:22,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:35:22,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-05 02:35:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749846113] [2022-04-05 02:35:22,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:35:22,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-05 02:35:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-05 02:35:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-05 02:35:22,428 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 02:35:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:22,439 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-04-05 02:35:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-05 02:35:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-05 02:35:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:22,444 INFO L225 Difference]: With dead ends: 37 [2022-04-05 02:35:22,444 INFO L226 Difference]: Without dead ends: 32 [2022-04-05 02:35:22,446 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-05 02:35:22,448 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:22,448 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:35:22,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-05 02:35:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-05 02:35:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 02:35:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-04-05 02:35:22,471 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 22 [2022-04-05 02:35:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:22,471 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-04-05 02:35:22,471 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 02:35:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-04-05 02:35:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-05 02:35:22,473 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:22,473 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:22,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:22,687 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-05 02:35:22,689 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash -713449777, now seen corresponding path program 1 times [2022-04-05 02:35:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:22,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561631755] [2022-04-05 02:35:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:22,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:22,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853923284] [2022-04-05 02:35:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:22,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:22,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:22,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:22,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 02:35:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:22,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:35:22,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:22,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:35:22,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:22,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561631755] [2022-04-05 02:35:22,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:22,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853923284] [2022-04-05 02:35:22,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853923284] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:35:22,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:35:22,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 02:35:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688285109] [2022-04-05 02:35:22,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:35:22,889 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 02:35:22,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:22,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 02:35:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:35:22,892 INFO L87 Difference]: Start difference. First operand 32 states and 41 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 02:35:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:22,906 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-04-05 02:35:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 02:35:22,908 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-05 02:35:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:22,908 INFO L225 Difference]: With dead ends: 34 [2022-04-05 02:35:22,908 INFO L226 Difference]: Without dead ends: 34 [2022-04-05 02:35:22,909 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:35:22,910 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:22,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:35:22,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-05 02:35:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-05 02:35:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 02:35:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-04-05 02:35:22,914 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 23 [2022-04-05 02:35:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:22,915 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-04-05 02:35:22,915 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 02:35:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-04-05 02:35:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-05 02:35:22,916 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:22,916 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:22,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-05 02:35:23,136 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-05 02:35:23,137 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash -712377301, now seen corresponding path program 1 times [2022-04-05 02:35:23,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:23,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487087161] [2022-04-05 02:35:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:23,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:23,146 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:23,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121740924] [2022-04-05 02:35:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:23,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:23,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:23,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:23,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 02:35:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:23,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 02:35:23,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:24,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:35:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:24,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487087161] [2022-04-05 02:35:24,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:24,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121740924] [2022-04-05 02:35:24,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121740924] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:35:24,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:35:24,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:35:24,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657713104] [2022-04-05 02:35:24,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:35:24,207 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:35:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:35:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:35:24,208 INFO L87 Difference]: Start difference. First operand 34 states and 43 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 02:35:28,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:35:30,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:35:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:30,371 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-04-05 02:35:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:35:30,372 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-05 02:35:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:30,373 INFO L225 Difference]: With dead ends: 51 [2022-04-05 02:35:30,374 INFO L226 Difference]: Without dead ends: 51 [2022-04-05 02:35:30,374 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 02:35:30,375 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:30,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 119 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-04-05 02:35:30,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-04-05 02:35:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-04-05 02:35:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 35 states have internal predecessors, (47), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 02:35:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2022-04-05 02:35:30,381 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 23 [2022-04-05 02:35:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:30,381 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2022-04-05 02:35:30,381 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 02:35:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2022-04-05 02:35:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 02:35:30,382 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:30,382 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, 1, 1, 1] [2022-04-05 02:35:30,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:30,602 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:30,602 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 740915101, now seen corresponding path program 1 times [2022-04-05 02:35:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:30,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980105286] [2022-04-05 02:35:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:30,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:30,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591508456] [2022-04-05 02:35:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:30,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:30,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:30,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 02:35:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:30,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 02:35:30,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:30,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:35:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:30,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:30,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980105286] [2022-04-05 02:35:30,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:30,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591508456] [2022-04-05 02:35:30,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591508456] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:35:30,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:35:30,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-05 02:35:30,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350314018] [2022-04-05 02:35:30,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:35:30,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:35:30,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:35:30,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:35:30,913 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:35:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:31,024 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2022-04-05 02:35:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 02:35:31,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-04-05 02:35:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:31,025 INFO L225 Difference]: With dead ends: 55 [2022-04-05 02:35:31,025 INFO L226 Difference]: Without dead ends: 52 [2022-04-05 02:35:31,025 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-05 02:35:31,026 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 37 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:31,026 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 147 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:35:31,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-05 02:35:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-04-05 02:35:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 02:35:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-04-05 02:35:31,031 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 29 [2022-04-05 02:35:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:31,031 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-04-05 02:35:31,032 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-05 02:35:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-04-05 02:35:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-05 02:35:31,043 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:31,044 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:31,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:31,255 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:31,256 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1345250901, now seen corresponding path program 1 times [2022-04-05 02:35:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085136883] [2022-04-05 02:35:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:31,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:31,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:31,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682507769] [2022-04-05 02:35:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:31,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:31,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:31,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:31,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 02:35:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:35:31,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:31,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:35:31,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:31,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085136883] [2022-04-05 02:35:31,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:31,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682507769] [2022-04-05 02:35:31,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682507769] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:35:31,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:35:31,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:35:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258919641] [2022-04-05 02:35:31,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:35:31,355 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:35:31,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:35:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:35:31,355 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-05 02:35:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:31,373 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2022-04-05 02:35:31,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:35:31,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-04-05 02:35:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:31,374 INFO L225 Difference]: With dead ends: 60 [2022-04-05 02:35:31,374 INFO L226 Difference]: Without dead ends: 60 [2022-04-05 02:35:31,374 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:35:31,375 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:31,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 120 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:35:31,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-05 02:35:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-04-05 02:35:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 12 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 02:35:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-04-05 02:35:31,382 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 35 [2022-04-05 02:35:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:31,382 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-04-05 02:35:31,382 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-05 02:35:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-04-05 02:35:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-05 02:35:31,383 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:31,383 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:31,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:31,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:31,599 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash -516919762, now seen corresponding path program 1 times [2022-04-05 02:35:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:31,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979722369] [2022-04-05 02:35:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:31,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:31,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895426055] [2022-04-05 02:35:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:31,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:31,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:31,620 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:31,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 02:35:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:31,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:35:31,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:31,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:35:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-05 02:35:31,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:31,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979722369] [2022-04-05 02:35:31,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:31,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895426055] [2022-04-05 02:35:31,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895426055] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:35:31,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:35:31,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-04-05 02:35:31,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981409574] [2022-04-05 02:35:31,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:35:31,805 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 02:35:31,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 02:35:31,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:35:31,805 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-05 02:35:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:31,828 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2022-04-05 02:35:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:35:31,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2022-04-05 02:35:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:31,829 INFO L225 Difference]: With dead ends: 69 [2022-04-05 02:35:31,829 INFO L226 Difference]: Without dead ends: 69 [2022-04-05 02:35:31,829 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:35:31,830 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:31,830 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 125 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:35:31,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-04-05 02:35:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-04-05 02:35:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 02:35:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2022-04-05 02:35:31,834 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 41 [2022-04-05 02:35:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:31,835 INFO L478 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2022-04-05 02:35:31,835 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-05 02:35:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2022-04-05 02:35:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-05 02:35:31,836 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:31,836 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:31,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-05 02:35:32,073 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:32,074 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash -61650990, now seen corresponding path program 1 times [2022-04-05 02:35:32,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:32,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11595472] [2022-04-05 02:35:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:32,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:32,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:32,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699955003] [2022-04-05 02:35:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:32,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:32,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:32,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:32,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-05 02:35:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:32,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:35:32,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:32,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:35:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-05 02:35:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:32,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11595472] [2022-04-05 02:35:32,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:32,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699955003] [2022-04-05 02:35:32,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699955003] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:35:32,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:35:32,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-04-05 02:35:32,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387369153] [2022-04-05 02:35:32,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:35:32,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 02:35:32,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:32,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 02:35:32,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:35:32,323 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 7 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2022-04-05 02:35:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:32,395 INFO L93 Difference]: Finished difference Result 109 states and 131 transitions. [2022-04-05 02:35:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:35:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 7 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 43 [2022-04-05 02:35:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:32,396 INFO L225 Difference]: With dead ends: 109 [2022-04-05 02:35:32,396 INFO L226 Difference]: Without dead ends: 109 [2022-04-05 02:35:32,396 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:35:32,397 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 48 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:32,397 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 215 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:35:32,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-04-05 02:35:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2022-04-05 02:35:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 74 states have internal predecessors, (89), 18 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 02:35:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2022-04-05 02:35:32,408 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 43 [2022-04-05 02:35:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:32,408 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2022-04-05 02:35:32,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 7 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2022-04-05 02:35:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2022-04-05 02:35:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 02:35:32,409 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:32,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:32,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:32,625 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:32,625 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:32,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash 468355249, now seen corresponding path program 1 times [2022-04-05 02:35:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:32,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435724558] [2022-04-05 02:35:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:32,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:32,632 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:32,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575082094] [2022-04-05 02:35:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:32,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:32,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:32,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:32,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-05 02:35:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:32,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-05 02:35:32,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 02:35:32,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:35:32,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435724558] [2022-04-05 02:35:32,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575082094] [2022-04-05 02:35:32,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575082094] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:35:32,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:35:32,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 02:35:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736410592] [2022-04-05 02:35:32,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:35:32,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 02:35:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 02:35:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:35:32,749 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:35:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:32,775 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2022-04-05 02:35:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 02:35:32,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2022-04-05 02:35:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:32,777 INFO L225 Difference]: With dead ends: 101 [2022-04-05 02:35:32,777 INFO L226 Difference]: Without dead ends: 101 [2022-04-05 02:35:32,777 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:35:32,778 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 19 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:32,778 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 129 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:35:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-04-05 02:35:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-04-05 02:35:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 66 states have internal predecessors, (79), 18 states have call successors, (18), 9 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 02:35:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2022-04-05 02:35:32,783 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 47 [2022-04-05 02:35:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:32,783 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2022-04-05 02:35:32,783 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:35:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2022-04-05 02:35:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-05 02:35:32,784 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:32,784 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:32,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:33,014 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-04-05 02:35:33,014 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:33,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:33,014 INFO L85 PathProgramCache]: Analyzing trace with hash -763492839, now seen corresponding path program 1 times [2022-04-05 02:35:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:33,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827931140] [2022-04-05 02:35:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:33,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:33,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651162669] [2022-04-05 02:35:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:33,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:33,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:33,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:33,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 02:35:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:33,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 02:35:33,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:33,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:35:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 02:35:33,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:33,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827931140] [2022-04-05 02:35:33,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:33,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651162669] [2022-04-05 02:35:33,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651162669] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:35:33,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:35:33,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-04-05 02:35:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583028375] [2022-04-05 02:35:33,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:35:33,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 02:35:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 02:35:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:35:33,269 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 7 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2022-04-05 02:35:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:33,329 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2022-04-05 02:35:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 02:35:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 7 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 49 [2022-04-05 02:35:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:33,330 INFO L225 Difference]: With dead ends: 95 [2022-04-05 02:35:33,330 INFO L226 Difference]: Without dead ends: 95 [2022-04-05 02:35:33,330 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:35:33,331 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 48 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:33,331 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 175 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:35:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-04-05 02:35:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2022-04-05 02:35:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 68 states have internal predecessors, (82), 18 states have call successors, (18), 9 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 02:35:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2022-04-05 02:35:33,337 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 49 [2022-04-05 02:35:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:33,337 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2022-04-05 02:35:33,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 7 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2022-04-05 02:35:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2022-04-05 02:35:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 02:35:33,338 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:33,338 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:33,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:33,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:33,555 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2076394588, now seen corresponding path program 1 times [2022-04-05 02:35:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804062625] [2022-04-05 02:35:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:33,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675385189] [2022-04-05 02:35:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:33,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:33,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:33,574 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:33,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-05 02:35:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:35:33,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 02:35:33,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:35:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:35:33,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:35:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-05 02:35:33,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:35:33,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804062625] [2022-04-05 02:35:33,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:35:33,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675385189] [2022-04-05 02:35:33,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675385189] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:35:33,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:35:33,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-04-05 02:35:33,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878016258] [2022-04-05 02:35:33,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:35:33,845 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 02:35:33,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:35:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 02:35:33,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-05 02:35:33,845 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-05 02:35:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:35:33,902 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2022-04-05 02:35:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 02:35:33,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 55 [2022-04-05 02:35:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:35:33,904 INFO L225 Difference]: With dead ends: 96 [2022-04-05 02:35:33,904 INFO L226 Difference]: Without dead ends: 96 [2022-04-05 02:35:33,904 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:35:33,905 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 31 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:35:33,906 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 148 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:35:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-04-05 02:35:33,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-04-05 02:35:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 18 states have call successors, (18), 9 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 02:35:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2022-04-05 02:35:33,913 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 55 [2022-04-05 02:35:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:35:33,913 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2022-04-05 02:35:33,914 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-05 02:35:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2022-04-05 02:35:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 02:35:33,914 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:35:33,914 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:33,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-05 02:35:34,137 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 02:35:34,137 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:35:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:35:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1972951801, now seen corresponding path program 2 times [2022-04-05 02:35:34,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:35:34,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076663190] [2022-04-05 02:35:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:35:34,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:35:34,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:35:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807426992] [2022-04-05 02:35:34,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:35:34,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:35:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:35:34,144 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:35:34,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-05 02:35:34,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:35:34,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-05 02:35:34,184 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 02:35:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 02:35:34,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 02:35:34,217 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 02:35:34,218 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 02:35:34,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-04-05 02:35:34,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 02:35:34,422 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:35:34,424 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 02:35:34,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:35:34 BasicIcfg [2022-04-05 02:35:34,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 02:35:34,458 INFO L158 Benchmark]: Toolchain (without parser) took 12890.98ms. Allocated memory was 166.7MB in the beginning and 255.9MB in the end (delta: 89.1MB). Free memory was 112.9MB in the beginning and 153.1MB in the end (delta: -40.1MB). Peak memory consumption was 49.6MB. Max. memory is 8.0GB. [2022-04-05 02:35:34,458 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:35:34,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.99ms. Allocated memory was 166.7MB in the beginning and 255.9MB in the end (delta: 89.1MB). Free memory was 112.7MB in the beginning and 228.0MB in the end (delta: -115.3MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2022-04-05 02:35:34,458 INFO L158 Benchmark]: Boogie Preprocessor took 26.22ms. Allocated memory is still 255.9MB. Free memory was 228.0MB in the beginning and 226.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:35:34,458 INFO L158 Benchmark]: RCFGBuilder took 257.97ms. Allocated memory is still 255.9MB. Free memory was 226.5MB in the beginning and 215.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 02:35:34,458 INFO L158 Benchmark]: IcfgTransformer took 17.28ms. Allocated memory is still 255.9MB. Free memory was 215.0MB in the beginning and 213.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 02:35:34,459 INFO L158 Benchmark]: TraceAbstraction took 12362.25ms. Allocated memory is still 255.9MB. Free memory was 212.9MB in the beginning and 153.1MB in the end (delta: 59.8MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2022-04-05 02:35:34,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.99ms. Allocated memory was 166.7MB in the beginning and 255.9MB in the end (delta: 89.1MB). Free memory was 112.7MB in the beginning and 228.0MB in the end (delta: -115.3MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.22ms. Allocated memory is still 255.9MB. Free memory was 228.0MB in the beginning and 226.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 257.97ms. Allocated memory is still 255.9MB. Free memory was 226.5MB in the beginning and 215.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 17.28ms. Allocated memory is still 255.9MB. Free memory was 215.0MB in the beginning and 213.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 12362.25ms. Allocated memory is still 255.9MB. Free memory was 212.9MB in the beginning and 153.1MB in the end (delta: 59.8MB). Peak memory consumption was 60.8MB. 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: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=10, counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L25] CALL assume_abort_if_not((((long long) R - 1) * ((long long) R - 1)) < A) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not((((long long) R - 1) * ((long long) R - 1)) < A) VAL [\old(counter)=0, A=3, counter=0, R=0] [L27] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L27] RET assume_abort_if_not(A % 2 == 1) VAL [\old(counter)=0, A=3, counter=0, R=0] [L29] u = ((long long) 2 * R) + 1 [L30] v = 1 [L31] r = ((long long) R * R) - A VAL [\old(counter)=0, A=3, counter=0, r=-3, R=0, u=1, v=1] [L34] EXPR counter++ VAL [\old(counter)=0, A=3, counter=1, counter++=0, R=0, r=-3, u=1, v=1] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=3, counter=1, r=-3, R=0, u=1, v=1] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=3, counter=1, R=0, r=-3, u=1, v=1] [L39] EXPR counter++ VAL [\old(counter)=0, A=3, counter=2, counter++=1, r=-3, R=0, u=1, v=1] [L39] COND TRUE counter++<5 [L40] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L40] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=3, counter=2, r=-3, R=0, u=1, v=1] [L41] COND TRUE !(r > 0) VAL [\old(counter)=0, A=3, counter=2, R=0, r=-3, u=1, v=1] [L47] EXPR counter++ VAL [\old(counter)=0, A=3, counter=3, counter++=2, r=-3, R=0, u=1, v=1] [L47] COND TRUE counter++<5 [L48] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L48] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=3, counter=3, r=-3, R=0, u=1, v=1] [L49] COND FALSE !(!(r < 0)) [L51] r = r + u [L52] u = u + 2 VAL [\old(counter)=0, A=3, counter=3, r=-2, R=0, u=3, v=1] [L47] EXPR counter++ VAL [\old(counter)=0, A=3, counter=4, counter++=3, R=0, r=-2, u=3, v=1] [L47] COND TRUE counter++<5 [L48] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L48] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=3, counter=4, R=0, r=-2, u=3, v=1] [L49] COND FALSE !(!(r < 0)) [L51] r = r + u [L52] u = u + 2 VAL [\old(counter)=0, A=3, counter=4, R=0, r=1, u=5, v=1] [L47] EXPR counter++ VAL [\old(counter)=0, A=3, counter=5, counter++=4, r=1, R=0, u=5, v=1] [L47] COND TRUE counter++<5 [L48] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L48] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=3, counter=5, R=0, r=1, u=5, v=1] [L49] COND TRUE !(r < 0) VAL [\old(counter)=0, A=3, counter=5, r=1, R=0, u=5, v=1] [L34] EXPR counter++ VAL [\old(counter)=0, A=3, counter=6, counter++=5, R=0, r=1, u=5, v=1] [L34] COND FALSE !(counter++<5) [L56] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, \old(counter)=0, counter=6] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.3s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 1325 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 915 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 410 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 584 GetRequests, 524 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=7, InterpolantAutomatonStates: 64, 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, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 569 ConstructedInterpolants, 0 QuantifiedInterpolants, 1371 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1204 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 186/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-05 02:35:34,478 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...