/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/egcd3-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 02:30:58,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 02:30:58,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 02:30:58,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 02:30:58,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 02:30:58,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 02:30:58,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 02:30:58,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 02:30:58,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 02:30:58,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 02:30:58,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 02:30:58,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 02:30:58,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 02:30:58,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 02:30:58,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 02:30:58,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 02:30:58,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 02:30:58,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 02:30:58,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 02:30:58,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 02:30:58,620 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 02:30:58,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 02:30:58,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 02:30:58,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 02:30:58,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 02:30:58,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 02:30:58,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 02:30:58,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 02:30:58,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 02:30:58,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 02:30:58,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 02:30:58,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 02:30:58,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 02:30:58,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 02:30:58,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 02:30:58,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 02:30:58,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 02:30:58,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 02:30:58,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 02:30:58,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 02:30:58,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 02:30:58,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 02:30:58,657 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 02:30:58,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 02:30:58,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 02:30:58,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 02:30:58,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 02:30:58,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 02:30:58,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:30:58,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 02:30:58,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 02:30:58,659 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 02:30:58,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 02:30:58,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 02:30:58,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 02:30:58,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 02:30:58,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 02:30:58,909 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 02:30:58,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound50.c [2022-04-05 02:30:58,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/713c13a11/1d3e56adb28942dfbbe5d6dda42ce7e0/FLAG07fca9a39 [2022-04-05 02:30:59,336 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 02:30:59,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound50.c [2022-04-05 02:30:59,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/713c13a11/1d3e56adb28942dfbbe5d6dda42ce7e0/FLAG07fca9a39 [2022-04-05 02:30:59,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/713c13a11/1d3e56adb28942dfbbe5d6dda42ce7e0 [2022-04-05 02:30:59,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 02:30:59,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 02:30:59,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 02:30:59,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 02:30:59,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 02:30:59,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:30:59" (1/1) ... [2022-04-05 02:30:59,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71865494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:30:59, skipping insertion in model container [2022-04-05 02:30:59,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:30:59" (1/1) ... [2022-04-05 02:30:59,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 02:30:59,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 02:30:59,935 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/egcd3-ll_unwindbound50.c[490,503] [2022-04-05 02:30:59,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:30:59,985 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 02:30:59,998 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/egcd3-ll_unwindbound50.c[490,503] [2022-04-05 02:31:00,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:31:00,034 INFO L208 MainTranslator]: Completed translation [2022-04-05 02:31:00,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00 WrapperNode [2022-04-05 02:31:00,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 02:31:00,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 02:31:00,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 02:31:00,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 02:31:00,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 02:31:00,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 02:31:00,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 02:31:00,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 02:31:00,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:31:00,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:00,104 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 02:31:00,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 02:31:00,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 02:31:00,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 02:31:00,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 02:31:00,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 02:31:00,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 02:31:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 02:31:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 02:31:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 02:31:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 02:31:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 02:31:00,135 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 02:31:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 02:31:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 02:31:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 02:31:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 02:31:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 02:31:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 02:31:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 02:31:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 02:31:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 02:31:00,235 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 02:31:00,236 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 02:31:00,404 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 02:31:00,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 02:31:00,408 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-05 02:31:00,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:31:00 BoogieIcfgContainer [2022-04-05 02:31:00,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 02:31:00,410 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 02:31:00,411 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 02:31:00,411 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 02:31:00,414 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:31:00" (1/1) ... [2022-04-05 02:31:00,415 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 02:31:00,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:31:00 BasicIcfg [2022-04-05 02:31:00,428 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 02:31:00,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 02:31:00,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 02:31:00,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 02:31:00,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:30:59" (1/4) ... [2022-04-05 02:31:00,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63da7fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:31:00, skipping insertion in model container [2022-04-05 02:31:00,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:31:00" (2/4) ... [2022-04-05 02:31:00,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63da7fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:31:00, skipping insertion in model container [2022-04-05 02:31:00,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:31:00" (3/4) ... [2022-04-05 02:31:00,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63da7fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:31:00, skipping insertion in model container [2022-04-05 02:31:00,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:31:00" (4/4) ... [2022-04-05 02:31:00,435 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound50.cJordan [2022-04-05 02:31:00,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 02:31:00,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 02:31:00,471 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 02:31:00,477 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 02:31:00,477 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 02:31:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 02:31:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-05 02:31:00,499 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:00,499 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 02:31:00,500 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:00,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash 6304412, now seen corresponding path program 1 times [2022-04-05 02:31:00,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:00,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14770814] [2022-04-05 02:31:00,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:00,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 02:31:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 02:31:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 02:31:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:00,748 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 02:31:00,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:00,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14770814] [2022-04-05 02:31:00,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14770814] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:00,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:00,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 02:31:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073336967] [2022-04-05 02:31:00,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:00,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 02:31:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 02:31:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 02:31:00,793 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 02:31:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:00,898 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-04-05 02:31:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 02:31:00,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-05 02:31:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:00,906 INFO L225 Difference]: With dead ends: 41 [2022-04-05 02:31:00,907 INFO L226 Difference]: Without dead ends: 36 [2022-04-05 02:31:00,908 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 02:31:00,911 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:00,912 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 51 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-05 02:31:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-04-05 02:31:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 02:31:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2022-04-05 02:31:00,948 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 22 [2022-04-05 02:31:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:00,948 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2022-04-05 02:31:00,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-05 02:31:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2022-04-05 02:31:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-05 02:31:00,952 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:00,952 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 02:31:00,952 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 02:31:00,953 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1535904754, now seen corresponding path program 1 times [2022-04-05 02:31:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:00,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195840736] [2022-04-05 02:31:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:00,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:00,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:00,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159443556] [2022-04-05 02:31:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:00,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:00,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:01,003 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 02:31:01,035 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 02:31:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:01,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:31:01,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:01,222 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 02:31:01,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:01,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195840736] [2022-04-05 02:31:01,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:01,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159443556] [2022-04-05 02:31:01,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159443556] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:01,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:01,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 02:31:01,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308691531] [2022-04-05 02:31:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:01,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 02:31:01,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 02:31:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 02:31:01,233 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (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 02:31:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:01,258 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-04-05 02:31:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 02:31:01,259 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 02:31:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:01,265 INFO L225 Difference]: With dead ends: 37 [2022-04-05 02:31:01,267 INFO L226 Difference]: Without dead ends: 37 [2022-04-05 02:31:01,268 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 02:31:01,269 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 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 02:31:01,269 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:31:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-05 02:31:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-04-05 02:31:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 02:31:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-04-05 02:31:01,275 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 23 [2022-04-05 02:31:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:01,277 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-04-05 02:31:01,277 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 02:31:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-04-05 02:31:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-05 02:31:01,278 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:01,278 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, 1] [2022-04-05 02:31:01,306 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 02:31:01,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:01,504 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:01,505 INFO L85 PathProgramCache]: Analyzing trace with hash 401530880, now seen corresponding path program 1 times [2022-04-05 02:31:01,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:01,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862703041] [2022-04-05 02:31:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:01,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:01,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:01,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701987264] [2022-04-05 02:31:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:01,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:01,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:01,536 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 02:31:01,561 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 02:31:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:01,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:31:01,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-05 02:31:01,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:01,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862703041] [2022-04-05 02:31:01,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701987264] [2022-04-05 02:31:01,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701987264] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:01,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:01,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 02:31:01,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996400842] [2022-04-05 02:31:01,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:01,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 02:31:01,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:01,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 02:31:01,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 02:31:01,688 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 02:31:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:01,819 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-04-05 02:31:01,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:31:01,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-04-05 02:31:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:01,821 INFO L225 Difference]: With dead ends: 50 [2022-04-05 02:31:01,821 INFO L226 Difference]: Without dead ends: 50 [2022-04-05 02:31:01,821 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-05 02:31:01,822 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:01,822 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 148 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-05 02:31:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2022-04-05 02:31:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 02:31:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2022-04-05 02:31:01,829 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 24 [2022-04-05 02:31:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:01,829 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2022-04-05 02:31:01,829 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 02:31:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2022-04-05 02:31:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 02:31:01,830 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:01,830 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 02:31:01,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:02,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 02:31:02,066 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2110136122, now seen corresponding path program 1 times [2022-04-05 02:31:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:02,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421653031] [2022-04-05 02:31:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:02,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:02,081 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:02,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732405322] [2022-04-05 02:31:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:02,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:02,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:02,083 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 02:31:02,085 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 02:31:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:02,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:31:02,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:02,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:02,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:02,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421653031] [2022-04-05 02:31:02,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:02,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732405322] [2022-04-05 02:31:02,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732405322] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:02,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:02,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:31:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069682974] [2022-04-05 02:31:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:02,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:31:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:31:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:31:02,244 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (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 02:31:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:02,277 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-04-05 02:31:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:31:02,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (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 29 [2022-04-05 02:31:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:02,280 INFO L225 Difference]: With dead ends: 40 [2022-04-05 02:31:02,280 INFO L226 Difference]: Without dead ends: 40 [2022-04-05 02:31:02,281 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 02:31:02,284 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:02,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:31:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-05 02:31:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-05 02:31:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 02:31:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-04-05 02:31:02,303 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 29 [2022-04-05 02:31:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:02,304 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-04-05 02:31:02,304 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (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 02:31:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-04-05 02:31:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 02:31:02,305 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:02,305 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, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:02,331 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 02:31:02,529 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:02,529 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:02,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash -358604865, now seen corresponding path program 1 times [2022-04-05 02:31:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:02,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415099841] [2022-04-05 02:31:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:02,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:02,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:02,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623454871] [2022-04-05 02:31:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:02,553 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 02:31:02,556 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 02:31:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:02,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 02:31:02,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-05 02:31:02,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:02,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:02,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415099841] [2022-04-05 02:31:02,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:02,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623454871] [2022-04-05 02:31:02,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623454871] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:02,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:02,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 02:31:02,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706744264] [2022-04-05 02:31:02,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:02,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:31:02,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:31:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:31:02,910 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 02:31:03,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:03,125 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2022-04-05 02:31:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:31:03,126 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-04-05 02:31:03,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:03,129 INFO L225 Difference]: With dead ends: 66 [2022-04-05 02:31:03,129 INFO L226 Difference]: Without dead ends: 66 [2022-04-05 02:31:03,129 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-04-05 02:31:03,130 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 60 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:03,130 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 248 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 02:31:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-04-05 02:31:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2022-04-05 02:31:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 38 states have internal predecessors, (48), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 02:31:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2022-04-05 02:31:03,144 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 29 [2022-04-05 02:31:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:03,145 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2022-04-05 02:31:03,145 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-05 02:31:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2022-04-05 02:31:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-05 02:31:03,146 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:03,146 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, 1] [2022-04-05 02:31:03,163 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 02:31:03,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:03,351 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2061673945, now seen corresponding path program 1 times [2022-04-05 02:31:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:03,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376579197] [2022-04-05 02:31:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:03,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:03,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122113732] [2022-04-05 02:31:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:03,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:03,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:03,367 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 02:31:03,369 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 02:31:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:31:03,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:03,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376579197] [2022-04-05 02:31:03,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122113732] [2022-04-05 02:31:03,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122113732] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:03,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:03,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-04-05 02:31:03,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342670282] [2022-04-05 02:31:03,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:03,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:31:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:31:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:31:03,599 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:31:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:03,716 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2022-04-05 02:31:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 02:31:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2022-04-05 02:31:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:03,718 INFO L225 Difference]: With dead ends: 144 [2022-04-05 02:31:03,718 INFO L226 Difference]: Without dead ends: 144 [2022-04-05 02:31:03,719 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-04-05 02:31:03,719 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 92 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:03,720 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 286 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-04-05 02:31:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2022-04-05 02:31:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 72 states have internal predecessors, (93), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 02:31:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 134 transitions. [2022-04-05 02:31:03,730 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 134 transitions. Word has length 30 [2022-04-05 02:31:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:03,730 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 134 transitions. [2022-04-05 02:31:03,730 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:31:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 134 transitions. [2022-04-05 02:31:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-05 02:31:03,731 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:03,731 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] [2022-04-05 02:31:03,757 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 02:31:03,957 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:03,958 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash 545740907, now seen corresponding path program 1 times [2022-04-05 02:31:03,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:03,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099914399] [2022-04-05 02:31:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:03,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:03,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761125530] [2022-04-05 02:31:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:03,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:03,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:03,972 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 02:31:03,976 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 02:31:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:04,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:31:04,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-05 02:31:04,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-05 02:31:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099914399] [2022-04-05 02:31:04,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:04,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761125530] [2022-04-05 02:31:04,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761125530] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:04,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:04,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-05 02:31:04,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117874805] [2022-04-05 02:31:04,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:04,228 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 02:31:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 02:31:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-05 02:31:04,228 INFO L87 Difference]: Start difference. First operand 101 states and 134 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 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 02:31:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:04,405 INFO L93 Difference]: Finished difference Result 175 states and 251 transitions. [2022-04-05 02:31:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:31:04,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 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 31 [2022-04-05 02:31:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:04,407 INFO L225 Difference]: With dead ends: 175 [2022-04-05 02:31:04,407 INFO L226 Difference]: Without dead ends: 175 [2022-04-05 02:31:04,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-04-05 02:31:04,408 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 115 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:04,408 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 254 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-04-05 02:31:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 132. [2022-04-05 02:31:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 25 states have call successors, (25), 9 states have call predecessors, (25), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 02:31:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2022-04-05 02:31:04,418 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2022-04-05 02:31:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:04,419 INFO L478 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2022-04-05 02:31:04,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 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 02:31:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2022-04-05 02:31:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-05 02:31:04,420 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:04,420 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, 1, 1, 1, 1, 1] [2022-04-05 02:31:04,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:04,644 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:04,645 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash 653912885, now seen corresponding path program 1 times [2022-04-05 02:31:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:04,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986372930] [2022-04-05 02:31:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:04,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:04,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938174595] [2022-04-05 02:31:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:04,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:04,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:04,665 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 02:31:04,666 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 02:31:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:04,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 02:31:04,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-05 02:31:04,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:04,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:04,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986372930] [2022-04-05 02:31:04,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:04,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938174595] [2022-04-05 02:31:04,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938174595] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:04,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:04,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 02:31:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251344887] [2022-04-05 02:31:04,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:04,964 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:31:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:31:04,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:31:04,965 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 02:31:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:05,148 INFO L93 Difference]: Finished difference Result 155 states and 206 transitions. [2022-04-05 02:31:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:31:05,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-04-05 02:31:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:05,150 INFO L225 Difference]: With dead ends: 155 [2022-04-05 02:31:05,150 INFO L226 Difference]: Without dead ends: 155 [2022-04-05 02:31:05,150 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-04-05 02:31:05,151 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 88 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:05,151 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 228 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-04-05 02:31:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 144. [2022-04-05 02:31:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 107 states have (on average 1.3177570093457944) internal successors, (141), 108 states have internal predecessors, (141), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 02:31:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 189 transitions. [2022-04-05 02:31:05,172 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 189 transitions. Word has length 34 [2022-04-05 02:31:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:05,172 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 189 transitions. [2022-04-05 02:31:05,172 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 02:31:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 189 transitions. [2022-04-05 02:31:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-05 02:31:05,173 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:05,174 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:05,196 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 02:31:05,374 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:05,374 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:05,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash -47631820, now seen corresponding path program 1 times [2022-04-05 02:31:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:05,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039479586] [2022-04-05 02:31:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:05,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:05,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:05,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767757211] [2022-04-05 02:31:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:05,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:05,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:05,387 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 02:31:05,392 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 02:31:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:05,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-05 02:31:05,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-05 02:31:05,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:05,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:05,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039479586] [2022-04-05 02:31:05,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:05,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767757211] [2022-04-05 02:31:05,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767757211] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:05,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:05,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2022-04-05 02:31:05,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356708078] [2022-04-05 02:31:05,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:05,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 02:31:05,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:05,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 02:31:05,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:31:05,756 INFO L87 Difference]: Start difference. First operand 144 states and 189 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:31:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:05,920 INFO L93 Difference]: Finished difference Result 177 states and 239 transitions. [2022-04-05 02:31:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 02:31:05,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-04-05 02:31:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:05,922 INFO L225 Difference]: With dead ends: 177 [2022-04-05 02:31:05,922 INFO L226 Difference]: Without dead ends: 177 [2022-04-05 02:31:05,922 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-05 02:31:05,922 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 61 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:05,923 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 357 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-05 02:31:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2022-04-05 02:31:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 128 states have (on average 1.34375) internal successors, (172), 129 states have internal predecessors, (172), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 02:31:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 236 transitions. [2022-04-05 02:31:05,930 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 236 transitions. Word has length 36 [2022-04-05 02:31:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:05,930 INFO L478 AbstractCegarLoop]: Abstraction has 174 states and 236 transitions. [2022-04-05 02:31:05,930 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:31:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 236 transitions. [2022-04-05 02:31:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-05 02:31:05,931 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:05,931 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:05,958 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 02:31:06,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-05 02:31:06,148 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash -375710268, now seen corresponding path program 1 times [2022-04-05 02:31:06,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:06,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273623276] [2022-04-05 02:31:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:06,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:06,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319483649] [2022-04-05 02:31:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:06,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:06,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:06,177 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 02:31:06,178 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 02:31:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:06,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 02:31:06,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:06,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:06,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273623276] [2022-04-05 02:31:06,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:06,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319483649] [2022-04-05 02:31:06,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319483649] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:06,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:06,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 02:31:06,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027027312] [2022-04-05 02:31:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:06,305 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 02:31:06,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 02:31:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 02:31:06,306 INFO L87 Difference]: Start difference. First operand 174 states and 236 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 02:31:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:06,324 INFO L93 Difference]: Finished difference Result 174 states and 235 transitions. [2022-04-05 02:31:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:31:06,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 36 [2022-04-05 02:31:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:06,325 INFO L225 Difference]: With dead ends: 174 [2022-04-05 02:31:06,326 INFO L226 Difference]: Without dead ends: 174 [2022-04-05 02:31:06,326 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 02:31:06,326 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:06,327 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 139 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:31:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-04-05 02:31:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-04-05 02:31:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 128 states have (on average 1.3359375) internal successors, (171), 129 states have internal predecessors, (171), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 02:31:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 235 transitions. [2022-04-05 02:31:06,333 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 235 transitions. Word has length 36 [2022-04-05 02:31:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:06,333 INFO L478 AbstractCegarLoop]: Abstraction has 174 states and 235 transitions. [2022-04-05 02:31:06,333 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 02:31:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 235 transitions. [2022-04-05 02:31:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-05 02:31:06,334 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:06,334 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-04-05 02:31:06,357 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 02:31:06,556 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 02:31:06,557 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash -344890017, now seen corresponding path program 1 times [2022-04-05 02:31:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:06,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236364872] [2022-04-05 02:31:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:06,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:06,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:06,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843373048] [2022-04-05 02:31:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:06,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:06,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:06,571 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 02:31:06,572 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 02:31:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:06,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:31:06,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-05 02:31:06,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:06,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:06,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236364872] [2022-04-05 02:31:06,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:06,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843373048] [2022-04-05 02:31:06,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843373048] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:06,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:06,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:31:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516538568] [2022-04-05 02:31:06,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:06,700 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:31:06,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:31:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:31:06,701 INFO L87 Difference]: Start difference. First operand 174 states and 235 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:31:06,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:06,742 INFO L93 Difference]: Finished difference Result 237 states and 331 transitions. [2022-04-05 02:31:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:31:06,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-04-05 02:31:06,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:06,744 INFO L225 Difference]: With dead ends: 237 [2022-04-05 02:31:06,744 INFO L226 Difference]: Without dead ends: 237 [2022-04-05 02:31:06,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 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 02:31:06,745 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 10 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:06,745 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 150 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:31:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-04-05 02:31:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2022-04-05 02:31:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 162 states have internal predecessors, (220), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 02:31:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 324 transitions. [2022-04-05 02:31:06,754 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 324 transitions. Word has length 39 [2022-04-05 02:31:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:06,755 INFO L478 AbstractCegarLoop]: Abstraction has 230 states and 324 transitions. [2022-04-05 02:31:06,755 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:31:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 324 transitions. [2022-04-05 02:31:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-05 02:31:06,756 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:06,756 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:06,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-04-05 02:31:06,973 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 02:31:06,973 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1057809952, now seen corresponding path program 1 times [2022-04-05 02:31:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:06,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109814281] [2022-04-05 02:31:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:06,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:06,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798884411] [2022-04-05 02:31:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:06,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:06,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:06,996 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 02:31:06,996 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 02:31:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:07,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2022-04-05 02:31:07,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:07,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:07,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:07,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109814281] [2022-04-05 02:31:07,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:07,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798884411] [2022-04-05 02:31:07,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798884411] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:07,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:07,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-05 02:31:07,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64507674] [2022-04-05 02:31:07,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:07,435 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 02:31:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:07,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 02:31:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-04-05 02:31:07,436 INFO L87 Difference]: Start difference. First operand 230 states and 324 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 02:31:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:08,346 INFO L93 Difference]: Finished difference Result 390 states and 576 transitions. [2022-04-05 02:31:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 02:31:08,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2022-04-05 02:31:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:08,349 INFO L225 Difference]: With dead ends: 390 [2022-04-05 02:31:08,349 INFO L226 Difference]: Without dead ends: 390 [2022-04-05 02:31:08,349 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-04-05 02:31:08,350 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 152 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:08,350 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 366 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 02:31:08,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-04-05 02:31:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 377. [2022-04-05 02:31:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 266 states have (on average 1.4248120300751879) internal successors, (379), 267 states have internal predecessors, (379), 93 states have call successors, (93), 18 states have call predecessors, (93), 17 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2022-04-05 02:31:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 563 transitions. [2022-04-05 02:31:08,364 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 563 transitions. Word has length 41 [2022-04-05 02:31:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:08,364 INFO L478 AbstractCegarLoop]: Abstraction has 377 states and 563 transitions. [2022-04-05 02:31:08,364 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 02:31:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 563 transitions. [2022-04-05 02:31:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-05 02:31:08,365 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:08,365 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2022-04-05 02:31:08,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:08,584 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,SelfDestructingSolverStorable11 [2022-04-05 02:31:08,584 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash -800046763, now seen corresponding path program 1 times [2022-04-05 02:31:08,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:08,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58009094] [2022-04-05 02:31:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:08,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:08,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:08,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363026064] [2022-04-05 02:31:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:08,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:08,601 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:08,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-05 02:31:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:08,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 02:31:08,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 02:31:08,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:08,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:08,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58009094] [2022-04-05 02:31:08,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:08,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363026064] [2022-04-05 02:31:08,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363026064] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:08,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:08,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:31:08,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754122465] [2022-04-05 02:31:08,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:08,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:31:08,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:08,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:31:08,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:31:08,731 INFO L87 Difference]: Start difference. First operand 377 states and 563 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:31:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:08,774 INFO L93 Difference]: Finished difference Result 564 states and 884 transitions. [2022-04-05 02:31:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:31:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2022-04-05 02:31:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:08,778 INFO L225 Difference]: With dead ends: 564 [2022-04-05 02:31:08,778 INFO L226 Difference]: Without dead ends: 564 [2022-04-05 02:31:08,778 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 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 02:31:08,780 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:08,780 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 166 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:31:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-04-05 02:31:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 495. [2022-04-05 02:31:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 307 states have (on average 1.4267100977198697) internal successors, (438), 327 states have internal predecessors, (438), 169 states have call successors, (169), 19 states have call predecessors, (169), 18 states have return successors, (167), 148 states have call predecessors, (167), 167 states have call successors, (167) [2022-04-05 02:31:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 774 transitions. [2022-04-05 02:31:08,809 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 774 transitions. Word has length 44 [2022-04-05 02:31:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:08,810 INFO L478 AbstractCegarLoop]: Abstraction has 495 states and 774 transitions. [2022-04-05 02:31:08,810 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-05 02:31:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 774 transitions. [2022-04-05 02:31:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-05 02:31:08,811 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:08,811 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:08,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:09,027 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-05 02:31:09,027 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash 684933943, now seen corresponding path program 1 times [2022-04-05 02:31:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:09,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028128407] [2022-04-05 02:31:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:09,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:09,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761176114] [2022-04-05 02:31:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:09,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:09,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:09,042 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:09,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-05 02:31:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:09,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 02:31:09,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-05 02:31:09,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-05 02:31:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:09,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028128407] [2022-04-05 02:31:09,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:09,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761176114] [2022-04-05 02:31:09,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761176114] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:09,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:09,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-05 02:31:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086558471] [2022-04-05 02:31:09,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:09,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 02:31:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 02:31:09,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:31:09,297 INFO L87 Difference]: Start difference. First operand 495 states and 774 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:31:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:09,472 INFO L93 Difference]: Finished difference Result 770 states and 1118 transitions. [2022-04-05 02:31:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 02:31:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-04-05 02:31:09,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:09,478 INFO L225 Difference]: With dead ends: 770 [2022-04-05 02:31:09,478 INFO L226 Difference]: Without dead ends: 770 [2022-04-05 02:31:09,478 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-04-05 02:31:09,479 INFO L913 BasicCegarLoop]: 69 mSDtfsCounter, 158 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:09,479 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 272 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-04-05 02:31:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 736. [2022-04-05 02:31:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 471 states have (on average 1.3630573248407643) internal successors, (642), 495 states have internal predecessors, (642), 224 states have call successors, (224), 41 states have call predecessors, (224), 40 states have return successors, (219), 199 states have call predecessors, (219), 219 states have call successors, (219) [2022-04-05 02:31:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1085 transitions. [2022-04-05 02:31:09,506 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1085 transitions. Word has length 42 [2022-04-05 02:31:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:09,506 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1085 transitions. [2022-04-05 02:31:09,506 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:31:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1085 transitions. [2022-04-05 02:31:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-05 02:31:09,507 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:09,507 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-04-05 02:31:09,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:09,730 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-05 02:31:09,730 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:09,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash 841576990, now seen corresponding path program 1 times [2022-04-05 02:31:09,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:09,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632099548] [2022-04-05 02:31:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:09,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:09,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:09,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369479759] [2022-04-05 02:31:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:09,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:09,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:09,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:09,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-05 02:31:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:09,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 02:31:09,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:09,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 02:31:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:10,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632099548] [2022-04-05 02:31:10,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:10,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369479759] [2022-04-05 02:31:10,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369479759] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:10,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:10,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-04-05 02:31:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935623760] [2022-04-05 02:31:10,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:10,055 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 02:31:10,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 02:31:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-04-05 02:31:10,056 INFO L87 Difference]: Start difference. First operand 736 states and 1085 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:31:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:10,307 INFO L93 Difference]: Finished difference Result 1119 states and 1584 transitions. [2022-04-05 02:31:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 02:31:10,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2022-04-05 02:31:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:10,312 INFO L225 Difference]: With dead ends: 1119 [2022-04-05 02:31:10,312 INFO L226 Difference]: Without dead ends: 1119 [2022-04-05 02:31:10,313 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2022-04-05 02:31:10,313 INFO L913 BasicCegarLoop]: 75 mSDtfsCounter, 222 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:10,313 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 416 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 02:31:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-04-05 02:31:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1072. [2022-04-05 02:31:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 697 states have (on average 1.3113342898134863) internal successors, (914), 730 states have internal predecessors, (914), 318 states have call successors, (318), 57 states have call predecessors, (318), 56 states have return successors, (311), 284 states have call predecessors, (311), 311 states have call successors, (311) [2022-04-05 02:31:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1543 transitions. [2022-04-05 02:31:10,354 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1543 transitions. Word has length 43 [2022-04-05 02:31:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:10,354 INFO L478 AbstractCegarLoop]: Abstraction has 1072 states and 1543 transitions. [2022-04-05 02:31:10,354 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 02:31:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1543 transitions. [2022-04-05 02:31:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-05 02:31:10,355 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:10,355 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:10,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:10,569 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:10,570 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash -799775801, now seen corresponding path program 2 times [2022-04-05 02:31:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:10,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269092005] [2022-04-05 02:31:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:10,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:10,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:10,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497179361] [2022-04-05 02:31:10,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:31:10,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:10,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:10,590 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:10,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-05 02:31:10,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:31:10,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:31:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 02:31:10,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-05 02:31:10,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:10,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:10,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269092005] [2022-04-05 02:31:10,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:10,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497179361] [2022-04-05 02:31:10,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497179361] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:10,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:10,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:31:10,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894165910] [2022-04-05 02:31:10,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:10,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:31:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:10,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:31:10,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:31:10,706 INFO L87 Difference]: Start difference. First operand 1072 states and 1543 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 02:31:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:10,794 INFO L93 Difference]: Finished difference Result 1234 states and 1815 transitions. [2022-04-05 02:31:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:31:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 44 [2022-04-05 02:31:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:10,800 INFO L225 Difference]: With dead ends: 1234 [2022-04-05 02:31:10,800 INFO L226 Difference]: Without dead ends: 1234 [2022-04-05 02:31:10,800 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-05 02:31:10,801 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 29 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:10,801 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 170 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:31:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-04-05 02:31:10,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 995. [2022-04-05 02:31:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 660 states have (on average 1.3015151515151515) internal successors, (859), 690 states have internal predecessors, (859), 278 states have call successors, (278), 57 states have call predecessors, (278), 56 states have return successors, (271), 247 states have call predecessors, (271), 271 states have call successors, (271) [2022-04-05 02:31:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1408 transitions. [2022-04-05 02:31:10,837 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1408 transitions. Word has length 44 [2022-04-05 02:31:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:10,837 INFO L478 AbstractCegarLoop]: Abstraction has 995 states and 1408 transitions. [2022-04-05 02:31:10,837 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 02:31:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1408 transitions. [2022-04-05 02:31:10,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 02:31:10,838 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:10,838 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1] [2022-04-05 02:31:10,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:11,064 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-05 02:31:11,064 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2059301326, now seen corresponding path program 1 times [2022-04-05 02:31:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:11,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224860419] [2022-04-05 02:31:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:11,073 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:11,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504566419] [2022-04-05 02:31:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:11,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:11,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:11,074 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:11,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-05 02:31:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:11,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 57 conjunts are in the unsatisfiable core [2022-04-05 02:31:11,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 02:31:11,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-05 02:31:12,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:12,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224860419] [2022-04-05 02:31:12,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:12,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504566419] [2022-04-05 02:31:12,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504566419] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:12,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:12,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-04-05 02:31:12,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314241074] [2022-04-05 02:31:12,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:12,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 02:31:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:12,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 02:31:12,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-04-05 02:31:12,747 INFO L87 Difference]: Start difference. First operand 995 states and 1408 transitions. Second operand has 21 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 8 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2022-04-05 02:31:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:20,461 INFO L93 Difference]: Finished difference Result 1410 states and 2007 transitions. [2022-04-05 02:31:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-05 02:31:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 8 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) Word has length 58 [2022-04-05 02:31:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:20,468 INFO L225 Difference]: With dead ends: 1410 [2022-04-05 02:31:20,468 INFO L226 Difference]: Without dead ends: 1404 [2022-04-05 02:31:20,469 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-04-05 02:31:20,469 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 175 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:20,469 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 511 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-04-05 02:31:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-04-05 02:31:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1226. [2022-04-05 02:31:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 845 states have (on average 1.2970414201183431) internal successors, (1096), 864 states have internal predecessors, (1096), 308 states have call successors, (308), 73 states have call predecessors, (308), 72 states have return successors, (303), 288 states have call predecessors, (303), 303 states have call successors, (303) [2022-04-05 02:31:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1707 transitions. [2022-04-05 02:31:20,515 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1707 transitions. Word has length 58 [2022-04-05 02:31:20,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:20,515 INFO L478 AbstractCegarLoop]: Abstraction has 1226 states and 1707 transitions. [2022-04-05 02:31:20,515 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 8 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2022-04-05 02:31:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1707 transitions. [2022-04-05 02:31:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 02:31:20,516 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:20,516 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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, 1, 1] [2022-04-05 02:31:20,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:20,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-05 02:31:20,723 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1248898955, now seen corresponding path program 1 times [2022-04-05 02:31:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455991414] [2022-04-05 02:31:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:20,732 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:20,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082462636] [2022-04-05 02:31:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:20,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:20,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:20,740 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:20,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-05 02:31:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:20,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 02:31:20,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-05 02:31:20,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-05 02:31:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455991414] [2022-04-05 02:31:21,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:21,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082462636] [2022-04-05 02:31:21,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082462636] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:21,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:21,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-04-05 02:31:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844076583] [2022-04-05 02:31:21,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:21,186 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 02:31:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 02:31:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2022-04-05 02:31:21,187 INFO L87 Difference]: Start difference. First operand 1226 states and 1707 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-05 02:31:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:21,602 INFO L93 Difference]: Finished difference Result 2543 states and 3572 transitions. [2022-04-05 02:31:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-05 02:31:21,603 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 64 [2022-04-05 02:31:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:21,615 INFO L225 Difference]: With dead ends: 2543 [2022-04-05 02:31:21,615 INFO L226 Difference]: Without dead ends: 2543 [2022-04-05 02:31:21,616 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=287, Invalid=525, Unknown=0, NotChecked=0, Total=812 [2022-04-05 02:31:21,616 INFO L913 BasicCegarLoop]: 85 mSDtfsCounter, 370 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:21,617 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 510 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 02:31:21,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2022-04-05 02:31:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2406. [2022-04-05 02:31:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1658 states have (on average 1.3094089264173703) internal successors, (2171), 1717 states have internal predecessors, (2171), 631 states have call successors, (631), 117 states have call predecessors, (631), 116 states have return successors, (623), 571 states have call predecessors, (623), 623 states have call successors, (623) [2022-04-05 02:31:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 3425 transitions. [2022-04-05 02:31:21,692 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 3425 transitions. Word has length 64 [2022-04-05 02:31:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:21,693 INFO L478 AbstractCegarLoop]: Abstraction has 2406 states and 3425 transitions. [2022-04-05 02:31:21,693 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-05 02:31:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 3425 transitions. [2022-04-05 02:31:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-05 02:31:21,694 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:21,694 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:21,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:21,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-05 02:31:21,916 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -934249537, now seen corresponding path program 1 times [2022-04-05 02:31:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099564456] [2022-04-05 02:31:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:21,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:21,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129129726] [2022-04-05 02:31:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:21,928 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:21,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-05 02:31:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:21,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 02:31:21,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-04-05 02:31:22,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-04-05 02:31:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:22,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099564456] [2022-04-05 02:31:22,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:22,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129129726] [2022-04-05 02:31:22,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129129726] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 02:31:22,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 02:31:22,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-04-05 02:31:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177911993] [2022-04-05 02:31:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:22,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:31:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:31:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-05 02:31:22,361 INFO L87 Difference]: Start difference. First operand 2406 states and 3425 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:31:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:22,409 INFO L93 Difference]: Finished difference Result 2465 states and 3473 transitions. [2022-04-05 02:31:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 02:31:22,409 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-04-05 02:31:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:22,419 INFO L225 Difference]: With dead ends: 2465 [2022-04-05 02:31:22,419 INFO L226 Difference]: Without dead ends: 2465 [2022-04-05 02:31:22,419 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-05 02:31:22,420 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:22,420 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 147 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:31:22,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2022-04-05 02:31:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2442. [2022-04-05 02:31:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 1685 states have (on average 1.3032640949554897) internal successors, (2196), 1744 states have internal predecessors, (2196), 631 states have call successors, (631), 126 states have call predecessors, (631), 125 states have return successors, (623), 571 states have call predecessors, (623), 623 states have call successors, (623) [2022-04-05 02:31:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3450 transitions. [2022-04-05 02:31:22,496 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3450 transitions. Word has length 67 [2022-04-05 02:31:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:22,497 INFO L478 AbstractCegarLoop]: Abstraction has 2442 states and 3450 transitions. [2022-04-05 02:31:22,497 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 02:31:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3450 transitions. [2022-04-05 02:31:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-05 02:31:22,502 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:22,502 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:22,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:22,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:22,723 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1422612783, now seen corresponding path program 1 times [2022-04-05 02:31:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:22,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048180070] [2022-04-05 02:31:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:22,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:22,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578716771] [2022-04-05 02:31:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:22,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:22,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:22,735 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:22,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-05 02:31:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:22,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-05 02:31:22,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-04-05 02:31:22,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:31:22,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:22,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048180070] [2022-04-05 02:31:22,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:22,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578716771] [2022-04-05 02:31:22,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578716771] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:31:22,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:31:22,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 02:31:22,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778992487] [2022-04-05 02:31:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:31:22,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 02:31:22,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 02:31:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 02:31:22,900 INFO L87 Difference]: Start difference. First operand 2442 states and 3450 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 02:31:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:22,955 INFO L93 Difference]: Finished difference Result 2578 states and 3563 transitions. [2022-04-05 02:31:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 02:31:22,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 73 [2022-04-05 02:31:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:22,966 INFO L225 Difference]: With dead ends: 2578 [2022-04-05 02:31:22,966 INFO L226 Difference]: Without dead ends: 2578 [2022-04-05 02:31:22,967 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 02:31:22,967 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:22,967 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 150 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:31:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2022-04-05 02:31:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 2372. [2022-04-05 02:31:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 1689 states have (on average 1.2948490230905862) internal successors, (2187), 1720 states have internal predecessors, (2187), 559 states have call successors, (559), 124 states have call predecessors, (559), 123 states have return successors, (551), 527 states have call predecessors, (551), 551 states have call successors, (551) [2022-04-05 02:31:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3297 transitions. [2022-04-05 02:31:23,036 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3297 transitions. Word has length 73 [2022-04-05 02:31:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:23,036 INFO L478 AbstractCegarLoop]: Abstraction has 2372 states and 3297 transitions. [2022-04-05 02:31:23,036 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 02:31:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3297 transitions. [2022-04-05 02:31:23,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-05 02:31:23,037 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:23,037 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:23,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:23,247 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:23,247 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1662269742, now seen corresponding path program 2 times [2022-04-05 02:31:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:23,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164856510] [2022-04-05 02:31:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:23,259 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:23,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169206174] [2022-04-05 02:31:23,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:31:23,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:23,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:23,261 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:23,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-05 02:31:23,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:31:23,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:31:23,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 82 conjunts are in the unsatisfiable core [2022-04-05 02:31:23,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-04-05 02:31:24,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-04-05 02:31:25,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:25,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164856510] [2022-04-05 02:31:25,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:25,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169206174] [2022-04-05 02:31:25,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169206174] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:25,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:25,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 28 [2022-04-05 02:31:25,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593686265] [2022-04-05 02:31:25,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:25,789 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-04-05 02:31:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:25,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-04-05 02:31:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2022-04-05 02:31:25,790 INFO L87 Difference]: Start difference. First operand 2372 states and 3297 transitions. Second operand has 28 states, 26 states have (on average 3.0) internal successors, (78), 22 states have internal predecessors, (78), 9 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-04-05 02:31:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:31:40,842 INFO L93 Difference]: Finished difference Result 2867 states and 3884 transitions. [2022-04-05 02:31:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-05 02:31:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.0) internal successors, (78), 22 states have internal predecessors, (78), 9 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 75 [2022-04-05 02:31:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:31:40,854 INFO L225 Difference]: With dead ends: 2867 [2022-04-05 02:31:40,854 INFO L226 Difference]: Without dead ends: 2863 [2022-04-05 02:31:40,855 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=469, Invalid=1981, Unknown=0, NotChecked=0, Total=2450 [2022-04-05 02:31:40,855 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 303 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-04-05 02:31:40,856 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 614 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-04-05 02:31:40,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-04-05 02:31:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2736. [2022-04-05 02:31:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 1985 states have (on average 1.2916876574307306) internal successors, (2564), 2026 states have internal predecessors, (2564), 594 states have call successors, (594), 158 states have call predecessors, (594), 156 states have return successors, (587), 551 states have call predecessors, (587), 587 states have call successors, (587) [2022-04-05 02:31:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3745 transitions. [2022-04-05 02:31:40,922 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3745 transitions. Word has length 75 [2022-04-05 02:31:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:31:40,922 INFO L478 AbstractCegarLoop]: Abstraction has 2736 states and 3745 transitions. [2022-04-05 02:31:40,922 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.0) internal successors, (78), 22 states have internal predecessors, (78), 9 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-04-05 02:31:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3745 transitions. [2022-04-05 02:31:40,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-05 02:31:40,923 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:31:40,923 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:31:40,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-05 02:31:41,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-05 02:31:41,147 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:31:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:31:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 612727057, now seen corresponding path program 1 times [2022-04-05 02:31:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:31:41,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534311995] [2022-04-05 02:31:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:31:41,156 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:31:41,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734244969] [2022-04-05 02:31:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:31:41,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:31:41,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:31:41,159 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:31:41,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-05 02:31:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:31:41,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 86 conjunts are in the unsatisfiable core [2022-04-05 02:31:41,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:31:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 52 proven. 35 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-04-05 02:31:42,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:31:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 65 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-04-05 02:31:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:31:50,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534311995] [2022-04-05 02:31:50,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:31:50,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734244969] [2022-04-05 02:31:50,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734244969] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:31:50,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:31:50,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 30 [2022-04-05 02:31:50,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869333928] [2022-04-05 02:31:50,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:31:50,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-04-05 02:31:50,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:31:50,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-04-05 02:31:50,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2022-04-05 02:31:50,911 INFO L87 Difference]: Start difference. First operand 2736 states and 3745 transitions. Second operand has 30 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-04-05 02:32:03,548 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 02:32:10,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:32:25,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:32:32,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:32:34,695 WARN L534 Checker$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 02:32:36,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:32:51,348 WARN L534 Checker$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 02:32:52,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:32:57,245 WARN L534 Checker$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 02:33:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:10,912 INFO L93 Difference]: Finished difference Result 3352 states and 4530 transitions. [2022-04-05 02:33:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-04-05 02:33:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 88 [2022-04-05 02:33:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:10,922 INFO L225 Difference]: With dead ends: 3352 [2022-04-05 02:33:10,923 INFO L226 Difference]: Without dead ends: 3323 [2022-04-05 02:33:10,925 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=1720, Invalid=9200, Unknown=0, NotChecked=0, Total=10920 [2022-04-05 02:33:10,926 INFO L913 BasicCegarLoop]: 89 mSDtfsCounter, 388 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 488 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:10,926 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1012 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1982 Invalid, 6 Unknown, 0 Unchecked, 34.4s Time] [2022-04-05 02:33:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2022-04-05 02:33:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3022. [2022-04-05 02:33:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 2209 states have (on average 1.2928927116342237) internal successors, (2856), 2253 states have internal predecessors, (2856), 637 states have call successors, (637), 177 states have call predecessors, (637), 175 states have return successors, (630), 591 states have call predecessors, (630), 630 states have call successors, (630) [2022-04-05 02:33:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4123 transitions. [2022-04-05 02:33:11,010 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4123 transitions. Word has length 88 [2022-04-05 02:33:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:11,010 INFO L478 AbstractCegarLoop]: Abstraction has 3022 states and 4123 transitions. [2022-04-05 02:33:11,010 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-04-05 02:33:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4123 transitions. [2022-04-05 02:33:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-05 02:33:11,012 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:11,012 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:33:11,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:11,227 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-04-05 02:33:11,227 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:11,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1189405093, now seen corresponding path program 3 times [2022-04-05 02:33:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:11,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705861765] [2022-04-05 02:33:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:11,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:11,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927608591] [2022-04-05 02:33:11,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 02:33:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:11,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:11,239 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:11,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-05 02:33:11,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 02:33:11,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:33:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 41 conjunts are in the unsatisfiable core [2022-04-05 02:33:11,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:33:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-04-05 02:33:11,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:33:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-04-05 02:33:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:33:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705861765] [2022-04-05 02:33:12,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:33:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927608591] [2022-04-05 02:33:12,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927608591] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:33:12,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:33:12,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-05 02:33:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178140227] [2022-04-05 02:33:12,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:33:12,160 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 02:33:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:33:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 02:33:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-04-05 02:33:12,162 INFO L87 Difference]: Start difference. First operand 3022 states and 4123 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-04-05 02:33:14,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:33:17,015 WARN L534 Checker$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 02:33:19,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:33:21,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:33:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:23,549 INFO L93 Difference]: Finished difference Result 3225 states and 4394 transitions. [2022-04-05 02:33:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 02:33:23,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 97 [2022-04-05 02:33:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:23,566 INFO L225 Difference]: With dead ends: 3225 [2022-04-05 02:33:23,566 INFO L226 Difference]: Without dead ends: 3215 [2022-04-05 02:33:23,567 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2022-04-05 02:33:23,567 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 114 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 153 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:23,568 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 482 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 637 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-04-05 02:33:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2022-04-05 02:33:23,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2949. [2022-04-05 02:33:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2141 states have (on average 1.2919196637085475) internal successors, (2766), 2180 states have internal predecessors, (2766), 632 states have call successors, (632), 177 states have call predecessors, (632), 175 states have return successors, (630), 591 states have call predecessors, (630), 630 states have call successors, (630) [2022-04-05 02:33:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4028 transitions. [2022-04-05 02:33:23,640 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4028 transitions. Word has length 97 [2022-04-05 02:33:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:23,640 INFO L478 AbstractCegarLoop]: Abstraction has 2949 states and 4028 transitions. [2022-04-05 02:33:23,640 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-04-05 02:33:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4028 transitions. [2022-04-05 02:33:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-04-05 02:33:23,642 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:23,642 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:33:23,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:23,862 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:23,863 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1037830812, now seen corresponding path program 1 times [2022-04-05 02:33:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:23,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234555409] [2022-04-05 02:33:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:23,871 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:23,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327579266] [2022-04-05 02:33:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:23,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:23,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:23,873 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:23,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-05 02:33:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:33:23,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-05 02:33:23,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:33:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 27 proven. 108 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-04-05 02:33:24,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:33:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 27 proven. 44 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-04-05 02:33:24,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:33:24,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234555409] [2022-04-05 02:33:24,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:33:24,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327579266] [2022-04-05 02:33:24,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327579266] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:33:24,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:33:24,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-04-05 02:33:24,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493987857] [2022-04-05 02:33:24,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:33:24,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-05 02:33:24,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:33:24,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-05 02:33:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-04-05 02:33:24,411 INFO L87 Difference]: Start difference. First operand 2949 states and 4028 transitions. Second operand has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-04-05 02:33:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:25,011 INFO L93 Difference]: Finished difference Result 5495 states and 7503 transitions. [2022-04-05 02:33:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-05 02:33:25,012 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 98 [2022-04-05 02:33:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:25,034 INFO L225 Difference]: With dead ends: 5495 [2022-04-05 02:33:25,035 INFO L226 Difference]: Without dead ends: 5495 [2022-04-05 02:33:25,035 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=585, Invalid=1055, Unknown=0, NotChecked=0, Total=1640 [2022-04-05 02:33:25,036 INFO L913 BasicCegarLoop]: 113 mSDtfsCounter, 672 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:25,036 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 696 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 02:33:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-04-05 02:33:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 5193. [2022-04-05 02:33:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 3569 states have (on average 1.2754272905575792) internal successors, (4552), 3591 states have internal predecessors, (4552), 1317 states have call successors, (1317), 308 states have call predecessors, (1317), 306 states have return successors, (1315), 1293 states have call predecessors, (1315), 1315 states have call successors, (1315) [2022-04-05 02:33:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 7184 transitions. [2022-04-05 02:33:25,149 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 7184 transitions. Word has length 98 [2022-04-05 02:33:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:25,149 INFO L478 AbstractCegarLoop]: Abstraction has 5193 states and 7184 transitions. [2022-04-05 02:33:25,150 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-04-05 02:33:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 7184 transitions. [2022-04-05 02:33:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-04-05 02:33:25,151 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:25,151 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-05 02:33:25,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:25,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:25,384 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:25,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2067527905, now seen corresponding path program 2 times [2022-04-05 02:33:25,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:25,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271942610] [2022-04-05 02:33:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:25,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:25,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:25,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794528915] [2022-04-05 02:33:25,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:33:25,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:25,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:25,405 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:25,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-05 02:33:25,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:33:25,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:33:25,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 74 conjunts are in the unsatisfiable core [2022-04-05 02:33:25,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:33:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 93 proven. 46 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-04-05 02:33:26,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:33:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 117 proven. 12 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-04-05 02:33:27,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:33:27,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271942610] [2022-04-05 02:33:27,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:33:27,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794528915] [2022-04-05 02:33:27,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794528915] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:33:27,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:33:27,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24 [2022-04-05 02:33:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416044847] [2022-04-05 02:33:27,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:33:27,901 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-05 02:33:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:33:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-05 02:33:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-04-05 02:33:27,902 INFO L87 Difference]: Start difference. First operand 5193 states and 7184 transitions. Second operand has 24 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2022-04-05 02:33:33,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-05 02:33:37,761 WARN L534 Checker$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 02:33:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:39,268 INFO L93 Difference]: Finished difference Result 6195 states and 8556 transitions. [2022-04-05 02:33:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-04-05 02:33:39,268 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) Word has length 108 [2022-04-05 02:33:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:39,287 INFO L225 Difference]: With dead ends: 6195 [2022-04-05 02:33:39,287 INFO L226 Difference]: Without dead ends: 6191 [2022-04-05 02:33:39,287 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=340, Invalid=1466, Unknown=0, NotChecked=0, Total=1806 [2022-04-05 02:33:39,288 INFO L913 BasicCegarLoop]: 77 mSDtfsCounter, 178 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 229 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:39,288 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 768 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1417 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-04-05 02:33:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2022-04-05 02:33:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 5573. [2022-04-05 02:33:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5573 states, 3768 states have (on average 1.28343949044586) internal successors, (4836), 3790 states have internal predecessors, (4836), 1473 states have call successors, (1473), 333 states have call predecessors, (1473), 331 states have return successors, (1471), 1449 states have call predecessors, (1471), 1471 states have call successors, (1471) [2022-04-05 02:33:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 7780 transitions. [2022-04-05 02:33:39,449 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 7780 transitions. Word has length 108 [2022-04-05 02:33:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:39,449 INFO L478 AbstractCegarLoop]: Abstraction has 5573 states and 7780 transitions. [2022-04-05 02:33:39,450 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.45) internal successors, (69), 21 states have internal predecessors, (69), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2022-04-05 02:33:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 7780 transitions. [2022-04-05 02:33:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-04-05 02:33:39,451 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:39,451 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:33:39,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:39,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-04-05 02:33:39,668 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:39,668 INFO L85 PathProgramCache]: Analyzing trace with hash -55503749, now seen corresponding path program 1 times [2022-04-05 02:33:39,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:39,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521420181] [2022-04-05 02:33:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:39,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:39,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:39,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137321384] [2022-04-05 02:33:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:39,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:39,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:39,678 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:39,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-05 02:33:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:33:39,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-05 02:33:39,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:33:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 44 proven. 116 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-04-05 02:33:39,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:33:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 44 proven. 52 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-04-05 02:33:40,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:33:40,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521420181] [2022-04-05 02:33:40,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:33:40,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137321384] [2022-04-05 02:33:40,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137321384] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:33:40,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:33:40,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-04-05 02:33:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388207765] [2022-04-05 02:33:40,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:33:40,260 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-05 02:33:40,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:33:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-05 02:33:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2022-04-05 02:33:40,261 INFO L87 Difference]: Start difference. First operand 5573 states and 7780 transitions. Second operand has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-04-05 02:33:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:40,901 INFO L93 Difference]: Finished difference Result 6132 states and 8250 transitions. [2022-04-05 02:33:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-04-05 02:33:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 105 [2022-04-05 02:33:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:40,916 INFO L225 Difference]: With dead ends: 6132 [2022-04-05 02:33:40,916 INFO L226 Difference]: Without dead ends: 6132 [2022-04-05 02:33:40,946 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=708, Invalid=1272, Unknown=0, NotChecked=0, Total=1980 [2022-04-05 02:33:40,947 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 622 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:40,948 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 721 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 02:33:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2022-04-05 02:33:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 6001. [2022-04-05 02:33:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6001 states, 3918 states have (on average 1.2021439509954057) internal successors, (4710), 3936 states have internal predecessors, (4710), 1705 states have call successors, (1705), 379 states have call predecessors, (1705), 377 states have return successors, (1703), 1685 states have call predecessors, (1703), 1703 states have call successors, (1703) [2022-04-05 02:33:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6001 states to 6001 states and 8118 transitions. [2022-04-05 02:33:41,056 INFO L78 Accepts]: Start accepts. Automaton has 6001 states and 8118 transitions. Word has length 105 [2022-04-05 02:33:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:41,056 INFO L478 AbstractCegarLoop]: Abstraction has 6001 states and 8118 transitions. [2022-04-05 02:33:41,056 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 8 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-04-05 02:33:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6001 states and 8118 transitions. [2022-04-05 02:33:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-04-05 02:33:41,059 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:41,059 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 7, 7, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:33:41,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:41,273 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-04-05 02:33:41,274 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:41,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1765875055, now seen corresponding path program 2 times [2022-04-05 02:33:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:41,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369325429] [2022-04-05 02:33:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:41,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:41,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:41,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046794576] [2022-04-05 02:33:41,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:33:41,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:41,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:41,287 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:41,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-05 02:33:41,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:33:41,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:33:41,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-05 02:33:41,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:33:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 24 proven. 311 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-04-05 02:33:41,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:33:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 24 proven. 119 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-04-05 02:33:42,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:33:42,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369325429] [2022-04-05 02:33:42,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:33:42,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046794576] [2022-04-05 02:33:42,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046794576] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:33:42,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:33:42,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-04-05 02:33:42,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453149223] [2022-04-05 02:33:42,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:33:42,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-04-05 02:33:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:33:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-04-05 02:33:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=621, Unknown=0, NotChecked=0, Total=1122 [2022-04-05 02:33:42,062 INFO L87 Difference]: Start difference. First operand 6001 states and 8118 transitions. Second operand has 34 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 34 states have internal predecessors, (131), 10 states have call successors, (32), 7 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 9 states have call successors, (30) [2022-04-05 02:33:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:43,315 INFO L93 Difference]: Finished difference Result 11122 states and 15479 transitions. [2022-04-05 02:33:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-05 02:33:43,315 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 34 states have internal predecessors, (131), 10 states have call successors, (32), 7 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 9 states have call successors, (30) Word has length 132 [2022-04-05 02:33:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:43,348 INFO L225 Difference]: With dead ends: 11122 [2022-04-05 02:33:43,348 INFO L226 Difference]: Without dead ends: 11122 [2022-04-05 02:33:43,349 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1327, Invalid=2333, Unknown=0, NotChecked=0, Total=3660 [2022-04-05 02:33:43,350 INFO L913 BasicCegarLoop]: 149 mSDtfsCounter, 918 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:43,350 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 794 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 02:33:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11122 states. [2022-04-05 02:33:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11122 to 10698. [2022-04-05 02:33:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10698 states, 7220 states have (on average 1.2674515235457064) internal successors, (9151), 7305 states have internal predecessors, (9151), 2921 states have call successors, (2921), 558 states have call predecessors, (2921), 556 states have return successors, (2919), 2834 states have call predecessors, (2919), 2919 states have call successors, (2919) [2022-04-05 02:33:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10698 states to 10698 states and 14991 transitions. [2022-04-05 02:33:43,645 INFO L78 Accepts]: Start accepts. Automaton has 10698 states and 14991 transitions. Word has length 132 [2022-04-05 02:33:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:43,645 INFO L478 AbstractCegarLoop]: Abstraction has 10698 states and 14991 transitions. [2022-04-05 02:33:43,650 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 34 states have internal predecessors, (131), 10 states have call successors, (32), 7 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 9 states have call successors, (30) [2022-04-05 02:33:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10698 states and 14991 transitions. [2022-04-05 02:33:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-04-05 02:33:43,658 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:43,659 INFO L499 BasicCegarLoop]: trace histogram [21, 20, 20, 10, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:33:43,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:43,879 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-05 02:33:43,879 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1872087437, now seen corresponding path program 1 times [2022-04-05 02:33:43,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:43,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830793898] [2022-04-05 02:33:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:43,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:43,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:43,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177434019] [2022-04-05 02:33:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:43,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:43,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:43,933 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:43,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-05 02:33:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:33:44,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 45 conjunts are in the unsatisfiable core [2022-04-05 02:33:44,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:33:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 63 proven. 897 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-04-05 02:33:44,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:33:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 63 proven. 257 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2022-04-05 02:33:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:33:45,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830793898] [2022-04-05 02:33:45,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:33:45,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177434019] [2022-04-05 02:33:45,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177434019] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:33:45,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:33:45,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2022-04-05 02:33:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866773439] [2022-04-05 02:33:45,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:33:45,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-05 02:33:45,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:33:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-05 02:33:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=951, Invalid=1119, Unknown=0, NotChecked=0, Total=2070 [2022-04-05 02:33:45,233 INFO L87 Difference]: Start difference. First operand 10698 states and 14991 transitions. Second operand has 46 states, 46 states have (on average 3.9347826086956523) internal successors, (181), 46 states have internal predecessors, (181), 14 states have call successors, (48), 9 states have call predecessors, (48), 8 states have return successors, (46), 12 states have call predecessors, (46), 13 states have call successors, (46) [2022-04-05 02:33:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:46,959 INFO L93 Difference]: Finished difference Result 15306 states and 21342 transitions. [2022-04-05 02:33:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-04-05 02:33:46,960 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.9347826086956523) internal successors, (181), 46 states have internal predecessors, (181), 14 states have call successors, (48), 9 states have call predecessors, (48), 8 states have return successors, (46), 12 states have call predecessors, (46), 13 states have call successors, (46) Word has length 196 [2022-04-05 02:33:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:47,010 INFO L225 Difference]: With dead ends: 15306 [2022-04-05 02:33:47,010 INFO L226 Difference]: Without dead ends: 15306 [2022-04-05 02:33:47,012 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2609, Invalid=4531, Unknown=0, NotChecked=0, Total=7140 [2022-04-05 02:33:47,012 INFO L913 BasicCegarLoop]: 197 mSDtfsCounter, 1524 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:47,012 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 1277 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 02:33:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15306 states. [2022-04-05 02:33:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15306 to 14953. [2022-04-05 02:33:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14953 states, 9776 states have (on average 1.2580810147299508) internal successors, (12299), 9831 states have internal predecessors, (12299), 4339 states have call successors, (4339), 839 states have call predecessors, (4339), 837 states have return successors, (4337), 4282 states have call predecessors, (4337), 4337 states have call successors, (4337) [2022-04-05 02:33:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14953 states to 14953 states and 20975 transitions. [2022-04-05 02:33:47,426 INFO L78 Accepts]: Start accepts. Automaton has 14953 states and 20975 transitions. Word has length 196 [2022-04-05 02:33:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:47,426 INFO L478 AbstractCegarLoop]: Abstraction has 14953 states and 20975 transitions. [2022-04-05 02:33:47,426 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.9347826086956523) internal successors, (181), 46 states have internal predecessors, (181), 14 states have call successors, (48), 9 states have call predecessors, (48), 8 states have return successors, (46), 12 states have call predecessors, (46), 13 states have call successors, (46) [2022-04-05 02:33:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 14953 states and 20975 transitions. [2022-04-05 02:33:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-04-05 02:33:47,436 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:47,436 INFO L499 BasicCegarLoop]: trace histogram [21, 20, 20, 12, 12, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:33:47,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:47,653 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-04-05 02:33:47,654 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:47,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2139737637, now seen corresponding path program 2 times [2022-04-05 02:33:47,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:47,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984575883] [2022-04-05 02:33:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:47,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:47,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:47,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833038633] [2022-04-05 02:33:47,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:33:47,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:47,667 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:47,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-05 02:33:47,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:33:47,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:33:47,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 49 conjunts are in the unsatisfiable core [2022-04-05 02:33:47,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:33:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 101 proven. 950 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-04-05 02:33:48,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:33:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 101 proven. 310 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2022-04-05 02:33:49,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:33:49,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984575883] [2022-04-05 02:33:49,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:33:49,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833038633] [2022-04-05 02:33:49,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833038633] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:33:49,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:33:49,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-04-05 02:33:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282099172] [2022-04-05 02:33:49,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:33:49,134 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-05 02:33:49,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:33:49,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-05 02:33:49,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=1317, Unknown=0, NotChecked=0, Total=2450 [2022-04-05 02:33:49,136 INFO L87 Difference]: Start difference. First operand 14953 states and 20975 transitions. Second operand has 50 states, 50 states have (on average 3.98) internal successors, (199), 50 states have internal predecessors, (199), 14 states have call successors, (48), 9 states have call predecessors, (48), 8 states have return successors, (46), 12 states have call predecessors, (46), 13 states have call successors, (46) [2022-04-05 02:33:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:33:51,100 INFO L93 Difference]: Finished difference Result 15900 states and 21672 transitions. [2022-04-05 02:33:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-04-05 02:33:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.98) internal successors, (199), 50 states have internal predecessors, (199), 14 states have call successors, (48), 9 states have call predecessors, (48), 8 states have return successors, (46), 12 states have call predecessors, (46), 13 states have call successors, (46) Word has length 207 [2022-04-05 02:33:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:33:51,184 INFO L225 Difference]: With dead ends: 15900 [2022-04-05 02:33:51,184 INFO L226 Difference]: Without dead ends: 15900 [2022-04-05 02:33:51,187 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3132, Invalid=5424, Unknown=0, NotChecked=0, Total=8556 [2022-04-05 02:33:51,190 INFO L913 BasicCegarLoop]: 215 mSDtfsCounter, 1533 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 887 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:33:51,190 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1175 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [887 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 02:33:51,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-04-05 02:33:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 15657. [2022-04-05 02:33:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15657 states, 9902 states have (on average 1.188547768127651) internal successors, (11769), 9944 states have internal predecessors, (11769), 4825 states have call successors, (4825), 931 states have call predecessors, (4825), 929 states have return successors, (4823), 4781 states have call predecessors, (4823), 4823 states have call successors, (4823) [2022-04-05 02:33:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15657 states to 15657 states and 21417 transitions. [2022-04-05 02:33:51,508 INFO L78 Accepts]: Start accepts. Automaton has 15657 states and 21417 transitions. Word has length 207 [2022-04-05 02:33:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:33:51,509 INFO L478 AbstractCegarLoop]: Abstraction has 15657 states and 21417 transitions. [2022-04-05 02:33:51,509 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.98) internal successors, (199), 50 states have internal predecessors, (199), 14 states have call successors, (48), 9 states have call predecessors, (48), 8 states have return successors, (46), 12 states have call predecessors, (46), 13 states have call successors, (46) [2022-04-05 02:33:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 15657 states and 21417 transitions. [2022-04-05 02:33:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-04-05 02:33:51,528 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:33:51,528 INFO L499 BasicCegarLoop]: trace histogram [29, 28, 28, 15, 15, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:33:51,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-04-05 02:33:51,743 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-04-05 02:33:51,743 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:33:51,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:33:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash -777184055, now seen corresponding path program 3 times [2022-04-05 02:33:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:33:51,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268370526] [2022-04-05 02:33:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:33:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:33:51,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:33:51,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493410888] [2022-04-05 02:33:51,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 02:33:51,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:33:51,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:33:51,754 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:33:51,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-05 02:34:32,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-04-05 02:34:32,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:34:32,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 65 conjunts are in the unsatisfiable core [2022-04-05 02:34:32,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:34:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 56 proven. 1955 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-04-05 02:34:33,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:34:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 56 proven. 611 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2022-04-05 02:34:33,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:34:33,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268370526] [2022-04-05 02:34:33,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:34:33,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493410888] [2022-04-05 02:34:33,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493410888] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:34:33,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:34:33,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 54 [2022-04-05 02:34:33,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394144526] [2022-04-05 02:34:33,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:34:33,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-05 02:34:33,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:34:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-05 02:34:33,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=1531, Unknown=0, NotChecked=0, Total=2862 [2022-04-05 02:34:33,994 INFO L87 Difference]: Start difference. First operand 15657 states and 21417 transitions. Second operand has 54 states, 54 states have (on average 4.722222222222222) internal successors, (255), 54 states have internal predecessors, (255), 18 states have call successors, (64), 11 states have call predecessors, (64), 10 states have return successors, (62), 16 states have call predecessors, (62), 17 states have call successors, (62) [2022-04-05 02:34:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:34:36,362 INFO L93 Difference]: Finished difference Result 18264 states and 25030 transitions. [2022-04-05 02:34:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-04-05 02:34:36,363 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.722222222222222) internal successors, (255), 54 states have internal predecessors, (255), 18 states have call successors, (64), 11 states have call predecessors, (64), 10 states have return successors, (62), 16 states have call predecessors, (62), 17 states have call successors, (62) Word has length 268 [2022-04-05 02:34:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:34:36,419 INFO L225 Difference]: With dead ends: 18264 [2022-04-05 02:34:36,419 INFO L226 Difference]: Without dead ends: 18264 [2022-04-05 02:34:36,421 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 482 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3713, Invalid=6387, Unknown=0, NotChecked=0, Total=10100 [2022-04-05 02:34:36,421 INFO L913 BasicCegarLoop]: 234 mSDtfsCounter, 1758 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 1280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1280 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:34:36,421 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1758 Valid, 1204 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1280 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 02:34:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18264 states. [2022-04-05 02:34:36,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18264 to 17885. [2022-04-05 02:34:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17885 states, 11463 states have (on average 1.2023902992235889) internal successors, (13783), 11552 states have internal predecessors, (13783), 5405 states have call successors, (5405), 1018 states have call predecessors, (5405), 1016 states have return successors, (5403), 5314 states have call predecessors, (5403), 5403 states have call successors, (5403) [2022-04-05 02:34:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17885 states to 17885 states and 24591 transitions. [2022-04-05 02:34:36,788 INFO L78 Accepts]: Start accepts. Automaton has 17885 states and 24591 transitions. Word has length 268 [2022-04-05 02:34:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:34:36,789 INFO L478 AbstractCegarLoop]: Abstraction has 17885 states and 24591 transitions. [2022-04-05 02:34:36,789 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.722222222222222) internal successors, (255), 54 states have internal predecessors, (255), 18 states have call successors, (64), 11 states have call predecessors, (64), 10 states have return successors, (62), 16 states have call predecessors, (62), 17 states have call successors, (62) [2022-04-05 02:34:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 17885 states and 24591 transitions. [2022-04-05 02:34:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-04-05 02:34:36,818 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:34:36,818 INFO L499 BasicCegarLoop]: trace histogram [41, 40, 40, 22, 21, 13, 13, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:34:36,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-04-05 02:34:37,030 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:34:37,030 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:34:37,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:34:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2114344233, now seen corresponding path program 2 times [2022-04-05 02:34:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:34:37,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325744067] [2022-04-05 02:34:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:34:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:34:37,045 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:34:37,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884634167] [2022-04-05 02:34:37,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 02:34:37,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:34:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:34:37,047 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:34:37,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-05 02:34:37,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 02:34:37,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:34:37,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 91 conjunts are in the unsatisfiable core [2022-04-05 02:34:37,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:34:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4536 backedges. 127 proven. 4165 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-04-05 02:34:38,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:34:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4536 backedges. 127 proven. 1285 refuted. 0 times theorem prover too weak. 3124 trivial. 0 not checked. [2022-04-05 02:34:39,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:34:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325744067] [2022-04-05 02:34:39,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:34:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884634167] [2022-04-05 02:34:39,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884634167] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:34:39,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:34:39,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 54 [2022-04-05 02:34:39,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870258807] [2022-04-05 02:34:39,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:34:39,455 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-05 02:34:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:34:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-05 02:34:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=1531, Unknown=0, NotChecked=0, Total=2862 [2022-04-05 02:34:39,457 INFO L87 Difference]: Start difference. First operand 17885 states and 24591 transitions. Second operand has 54 states, 54 states have (on average 5.907407407407407) internal successors, (319), 54 states have internal predecessors, (319), 24 states have call successors, (88), 14 states have call predecessors, (88), 13 states have return successors, (86), 22 states have call predecessors, (86), 23 states have call successors, (86) [2022-04-05 02:34:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:34:41,698 INFO L93 Difference]: Finished difference Result 17432 states and 23780 transitions. [2022-04-05 02:34:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-04-05 02:34:41,699 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.907407407407407) internal successors, (319), 54 states have internal predecessors, (319), 24 states have call successors, (88), 14 states have call predecessors, (88), 13 states have return successors, (86), 22 states have call predecessors, (86), 23 states have call successors, (86) Word has length 377 [2022-04-05 02:34:41,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:34:41,736 INFO L225 Difference]: With dead ends: 17432 [2022-04-05 02:34:41,736 INFO L226 Difference]: Without dead ends: 17432 [2022-04-05 02:34:41,737 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 700 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3724, Invalid=6376, Unknown=0, NotChecked=0, Total=10100 [2022-04-05 02:34:41,737 INFO L913 BasicCegarLoop]: 229 mSDtfsCounter, 1592 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:34:41,737 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 1439 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 02:34:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17432 states. [2022-04-05 02:34:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17432 to 17325. [2022-04-05 02:34:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17325 states, 10956 states have (on average 1.1849215041986125) internal successors, (12982), 11003 states have internal predecessors, (12982), 5347 states have call successors, (5347), 1023 states have call predecessors, (5347), 1021 states have return successors, (5345), 5298 states have call predecessors, (5345), 5345 states have call successors, (5345) [2022-04-05 02:34:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17325 states to 17325 states and 23674 transitions. [2022-04-05 02:34:42,092 INFO L78 Accepts]: Start accepts. Automaton has 17325 states and 23674 transitions. Word has length 377 [2022-04-05 02:34:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:34:42,092 INFO L478 AbstractCegarLoop]: Abstraction has 17325 states and 23674 transitions. [2022-04-05 02:34:42,093 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.907407407407407) internal successors, (319), 54 states have internal predecessors, (319), 24 states have call successors, (88), 14 states have call predecessors, (88), 13 states have return successors, (86), 22 states have call predecessors, (86), 23 states have call successors, (86) [2022-04-05 02:34:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 17325 states and 23674 transitions. [2022-04-05 02:34:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-04-05 02:34:42,124 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:34:42,125 INFO L499 BasicCegarLoop]: trace histogram [45, 44, 44, 24, 24, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:34:42,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-04-05 02:34:42,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-04-05 02:34:42,335 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:34:42,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:34:42,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2036089593, now seen corresponding path program 3 times [2022-04-05 02:34:42,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:34:42,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474064131] [2022-04-05 02:34:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:34:42,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:34:42,355 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:34:42,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304957435] [2022-04-05 02:34:42,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 02:34:42,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:34:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:34:42,356 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:34:42,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-05 02:34:42,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-04-05 02:34:42,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 02:34:42,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-05 02:34:42,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:34:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 5251 trivial. 0 not checked. [2022-04-05 02:34:42,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:34:42,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:34:42,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474064131] [2022-04-05 02:34:42,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:34:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304957435] [2022-04-05 02:34:42,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304957435] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:34:42,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:34:42,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 02:34:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636915093] [2022-04-05 02:34:42,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:34:42,963 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 02:34:42,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:34:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 02:34:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-05 02:34:42,964 INFO L87 Difference]: Start difference. First operand 17325 states and 23674 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 02:34:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:34:43,062 INFO L93 Difference]: Finished difference Result 17929 states and 24468 transitions. [2022-04-05 02:34:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 02:34:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 411 [2022-04-05 02:34:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:34:43,109 INFO L225 Difference]: With dead ends: 17929 [2022-04-05 02:34:43,109 INFO L226 Difference]: Without dead ends: 17905 [2022-04-05 02:34:43,110 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-05 02:34:43,110 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:34:43,110 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 247 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:34:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17905 states. [2022-04-05 02:34:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17905 to 17494. [2022-04-05 02:34:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17494 states, 11013 states have (on average 1.183782802142922) internal successors, (13037), 11057 states have internal predecessors, (13037), 5433 states have call successors, (5433), 1049 states have call predecessors, (5433), 1047 states have return successors, (5431), 5387 states have call predecessors, (5431), 5431 states have call successors, (5431) [2022-04-05 02:34:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17494 states to 17494 states and 23901 transitions. [2022-04-05 02:34:43,522 INFO L78 Accepts]: Start accepts. Automaton has 17494 states and 23901 transitions. Word has length 411 [2022-04-05 02:34:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:34:43,523 INFO L478 AbstractCegarLoop]: Abstraction has 17494 states and 23901 transitions. [2022-04-05 02:34:43,523 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 02:34:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 17494 states and 23901 transitions. [2022-04-05 02:34:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-04-05 02:34:43,564 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:34:43,564 INFO L499 BasicCegarLoop]: trace histogram [45, 44, 44, 25, 25, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:34:43,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-04-05 02:34:43,786 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:34:43,786 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:34:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:34:43,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2109653093, now seen corresponding path program 1 times [2022-04-05 02:34:43,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:34:43,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833318947] [2022-04-05 02:34:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:34:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:34:43,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:34:43,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204466103] [2022-04-05 02:34:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:34:43,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:34:43,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:34:43,802 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:34:43,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-05 02:34:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:34:44,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 97 conjunts are in the unsatisfiable core [2022-04-05 02:34:44,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:34:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5573 backedges. 307 proven. 4994 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-04-05 02:34:45,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 02:34:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5573 backedges. 307 proven. 1474 refuted. 0 times theorem prover too weak. 3792 trivial. 0 not checked. [2022-04-05 02:34:46,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:34:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833318947] [2022-04-05 02:34:46,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:34:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204466103] [2022-04-05 02:34:46,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204466103] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 02:34:46,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 02:34:46,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 54 [2022-04-05 02:34:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067284019] [2022-04-05 02:34:46,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 02:34:46,174 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-05 02:34:46,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:34:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-05 02:34:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=1531, Unknown=0, NotChecked=0, Total=2862 [2022-04-05 02:34:46,175 INFO L87 Difference]: Start difference. First operand 17494 states and 23901 transitions. Second operand has 54 states, 54 states have (on average 7.166666666666667) internal successors, (387), 54 states have internal predecessors, (387), 25 states have call successors, (96), 14 states have call predecessors, (96), 13 states have return successors, (94), 23 states have call predecessors, (94), 24 states have call successors, (94) [2022-04-05 02:34:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:34:48,452 INFO L93 Difference]: Finished difference Result 17412 states and 23687 transitions. [2022-04-05 02:34:48,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-04-05 02:34:48,453 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.166666666666667) internal successors, (387), 54 states have internal predecessors, (387), 25 states have call successors, (96), 14 states have call predecessors, (96), 13 states have return successors, (94), 23 states have call predecessors, (94), 24 states have call successors, (94) Word has length 416 [2022-04-05 02:34:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:34:48,491 INFO L225 Difference]: With dead ends: 17412 [2022-04-05 02:34:48,492 INFO L226 Difference]: Without dead ends: 17412 [2022-04-05 02:34:48,493 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 778 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3726, Invalid=6374, Unknown=0, NotChecked=0, Total=10100 [2022-04-05 02:34:48,493 INFO L913 BasicCegarLoop]: 229 mSDtfsCounter, 1745 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 1398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1398 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:34:48,493 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1745 Valid, 1171 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1398 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 02:34:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17412 states. [2022-04-05 02:34:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17412 to 17412. [2022-04-05 02:34:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17412 states, 10973 states have (on average 1.1740636106807618) internal successors, (12883), 11016 states have internal predecessors, (12883), 5403 states have call successors, (5403), 1037 states have call predecessors, (5403), 1035 states have return successors, (5401), 5358 states have call predecessors, (5401), 5401 states have call successors, (5401) [2022-04-05 02:34:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17412 states to 17412 states and 23687 transitions. [2022-04-05 02:34:48,883 INFO L78 Accepts]: Start accepts. Automaton has 17412 states and 23687 transitions. Word has length 416 [2022-04-05 02:34:48,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:34:48,883 INFO L478 AbstractCegarLoop]: Abstraction has 17412 states and 23687 transitions. [2022-04-05 02:34:48,884 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.166666666666667) internal successors, (387), 54 states have internal predecessors, (387), 25 states have call successors, (96), 14 states have call predecessors, (96), 13 states have return successors, (94), 23 states have call predecessors, (94), 24 states have call successors, (94) [2022-04-05 02:34:48,884 INFO L276 IsEmpty]: Start isEmpty. Operand 17412 states and 23687 transitions. [2022-04-05 02:34:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-04-05 02:34:48,911 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:34:48,911 INFO L499 BasicCegarLoop]: trace histogram [49, 48, 48, 25, 25, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:34:48,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-04-05 02:34:49,127 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:34:49,127 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:34:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:34:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1640866097, now seen corresponding path program 4 times [2022-04-05 02:34:49,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:34:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297004415] [2022-04-05 02:34:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:34:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:34:49,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:34:49,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548283597] [2022-04-05 02:34:49,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 02:34:49,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:34:49,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:34:49,198 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:34:49,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-05 02:34:51,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 02:34:51,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-05 02:34:51,075 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 02:34:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 02:34:51,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 02:34:51,821 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 02:34:51,822 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 02:34:51,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-04-05 02:34:52,034 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-04-05 02:34:52,037 INFO L719 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:34:52,041 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 02:34:52,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:34:52 BasicIcfg [2022-04-05 02:34:52,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 02:34:52,224 INFO L158 Benchmark]: Toolchain (without parser) took 232502.21ms. Allocated memory was 198.2MB in the beginning and 806.4MB in the end (delta: 608.2MB). Free memory was 149.8MB in the beginning and 587.5MB in the end (delta: -437.7MB). Peak memory consumption was 171.1MB. Max. memory is 8.0GB. [2022-04-05 02:34:52,224 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory was 165.7MB in the beginning and 165.5MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:34:52,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.39ms. Allocated memory is still 198.2MB. Free memory was 149.5MB in the beginning and 176.0MB in the end (delta: -26.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-05 02:34:52,229 INFO L158 Benchmark]: Boogie Preprocessor took 34.87ms. Allocated memory is still 198.2MB. Free memory was 176.0MB in the beginning and 174.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 02:34:52,230 INFO L158 Benchmark]: RCFGBuilder took 339.14ms. Allocated memory is still 198.2MB. Free memory was 174.3MB in the beginning and 162.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 02:34:52,231 INFO L158 Benchmark]: IcfgTransformer took 17.99ms. Allocated memory is still 198.2MB. Free memory was 162.8MB in the beginning and 161.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:34:52,231 INFO L158 Benchmark]: TraceAbstraction took 231793.10ms. Allocated memory was 198.2MB in the beginning and 806.4MB in the end (delta: 608.2MB). Free memory was 161.1MB in the beginning and 587.5MB in the end (delta: -426.4MB). Peak memory consumption was 182.8MB. Max. memory is 8.0GB. [2022-04-05 02:34:52,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory was 165.7MB in the beginning and 165.5MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 312.39ms. Allocated memory is still 198.2MB. Free memory was 149.5MB in the beginning and 176.0MB in the end (delta: -26.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.87ms. Allocated memory is still 198.2MB. Free memory was 176.0MB in the beginning and 174.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 339.14ms. Allocated memory is still 198.2MB. Free memory was 174.3MB in the beginning and 162.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 17.99ms. Allocated memory is still 198.2MB. Free memory was 162.8MB in the beginning and 161.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 231793.10ms. Allocated memory was 198.2MB in the beginning and 806.4MB in the end (delta: 608.2MB). Free memory was 161.1MB in the beginning and 587.5MB in the end (delta: -426.4MB). Peak memory consumption was 182.8MB. 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=53, counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=377, y=610] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=377, y=610] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [\old(counter)=0, a=377, b=610, counter=0, p=1, q=0, r=0, s=1, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=377, b=610, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=377, b=610, c=377, counter=1, k=0, p=1, q=0, r=0, s=1, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=377, b=610, c=377, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=377, b=610, c=377, counter=2, k=0, p=1, q=0, r=0, s=1, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=610, b=377, c=377, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=610, b=377, c=377, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=610, b=377, c=610, counter=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=610, b=377, c=610, counter=4, counter++=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=610, b=377, c=610, counter=4, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=610, b=377, c=610, counter=5, counter++=4, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=610, b=377, c=610, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=610, b=377, c=610, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=610, b=377, c=610, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=610, b=377, c=610, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=610, b=377, c=610, counter=5, d=1, k=0, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=610, b=377, c=233, counter=5, d=1, k=1, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=610, b=377, c=233, counter=6, counter++=5, d=1, k=1, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=610, b=377, c=233, counter=6, d=1, k=1, p=0, q=1, r=1, s=0, temp=0, v=377, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=377, b=233, c=233, counter=6, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=377, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=377, b=233, c=233, counter=7, counter++=6, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=377, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=377, b=233, c=377, counter=7, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=377, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=377, b=233, c=377, counter=8, counter++=7, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=377, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=377, b=233, c=377, counter=8, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=377, b=233, c=377, counter=9, counter++=8, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=377, b=233, c=377, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=377, b=233, c=377, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=377, b=233, c=377, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=377, b=233, c=377, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=377, b=233, c=377, counter=9, d=1, k=0, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=377, b=233, c=144, counter=9, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=377, b=233, c=144, counter=10, counter++=9, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=377, b=233, c=144, counter=10, d=1, k=1, p=1, q=-1, r=0, s=1, temp=1, v=233, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=233, b=144, c=144, counter=10, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=233, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=233, b=144, c=144, counter=11, counter++=10, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=233, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=233, b=144, c=233, counter=11, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=233, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=233, b=144, c=233, counter=12, counter++=11, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=233, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=233, b=144, c=233, counter=12, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=233, b=144, c=233, counter=13, counter++=12, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=233, b=144, c=233, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=233, b=144, c=233, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=233, b=144, c=233, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=233, b=144, c=233, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=233, b=144, c=233, counter=13, d=1, k=0, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=233, b=144, c=89, counter=13, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=233, b=144, c=89, counter=14, counter++=13, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=233, b=144, c=89, counter=14, d=1, k=1, p=-1, q=2, r=1, s=-1, temp=0, v=144, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=144, b=89, c=89, counter=14, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=144, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=144, b=89, c=89, counter=15, counter++=14, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=144, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=144, b=89, c=144, counter=15, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=144, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=144, b=89, c=144, counter=16, counter++=15, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=144, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=144, b=89, c=144, counter=16, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=144, b=89, c=144, counter=17, counter++=16, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=144, b=89, c=144, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=144, b=89, c=144, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=144, b=89, c=144, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=144, b=89, c=144, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=144, b=89, c=144, counter=17, d=1, k=0, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=144, b=89, c=55, counter=17, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=144, b=89, c=55, counter=18, counter++=17, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=144, b=89, c=55, counter=18, d=1, k=1, p=2, q=-3, r=-1, s=2, temp=1, v=89, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=89, b=55, c=55, counter=18, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=89, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=89, b=55, c=55, counter=19, counter++=18, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=89, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=89, b=55, c=89, counter=19, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=89, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=89, b=55, c=89, counter=20, counter++=19, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=89, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=89, b=55, c=89, counter=20, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=89, b=55, c=89, counter=21, counter++=20, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=89, b=55, c=89, counter=21, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=89, b=55, c=89, counter=21, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=89, b=55, c=89, counter=21, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=89, b=55, c=89, counter=21, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=89, b=55, c=89, counter=21, d=1, k=0, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=89, b=55, c=34, counter=21, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=89, b=55, c=34, counter=22, counter++=21, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=89, b=55, c=34, counter=22, d=1, k=1, p=-3, q=5, r=2, s=-3, temp=-1, v=55, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=55, b=34, c=34, counter=22, d=1, k=1, p=5, q=-8, r=-3, s=5, temp=2, v=55, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=34, counter=23, counter++=22, d=1, k=1, p=5, q=-8, r=-3, s=5, temp=2, v=55, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=55, b=34, c=55, counter=23, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=55, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=55, counter=24, counter++=23, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=55, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=55, b=34, c=55, counter=24, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=55, counter=25, counter++=24, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=55, b=34, c=55, counter=25, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=55, b=34, c=55, counter=25, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=55, b=34, c=55, counter=25, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=55, b=34, c=55, counter=25, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=55, b=34, c=55, counter=25, d=1, k=0, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=55, b=34, c=21, counter=25, d=1, k=1, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=21, counter=26, counter++=25, d=1, k=1, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=55, b=34, c=21, counter=26, d=1, k=1, p=5, q=-8, r=-3, s=5, temp=2, v=34, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=34, b=21, c=21, counter=26, d=1, k=1, p=-8, q=13, r=5, s=-8, temp=-3, v=34, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=21, counter=27, counter++=26, d=1, k=1, p=-8, q=13, r=5, s=-8, temp=-3, v=34, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=34, b=21, c=34, counter=27, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=34, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=34, counter=28, counter++=27, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=34, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=34, b=21, c=34, counter=28, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=34, counter=29, counter++=28, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=34, b=21, c=34, counter=29, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=34, b=21, c=34, counter=29, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=34, b=21, c=34, counter=29, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=34, b=21, c=34, counter=29, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=34, b=21, c=34, counter=29, d=1, k=0, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=34, b=21, c=13, counter=29, d=1, k=1, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=13, counter=30, counter++=29, d=1, k=1, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=34, b=21, c=13, counter=30, d=1, k=1, p=-8, q=13, r=5, s=-8, temp=-3, v=21, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=21, b=13, c=13, counter=30, d=1, k=1, p=13, q=-21, r=-8, s=13, temp=5, v=21, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=13, counter=31, counter++=30, d=1, k=1, p=13, q=-21, r=-8, s=13, temp=5, v=21, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=21, b=13, c=21, counter=31, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=21, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=21, counter=32, counter++=31, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=21, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=21, b=13, c=21, counter=32, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=21, counter=33, counter++=32, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=21, b=13, c=21, counter=33, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=21, b=13, c=21, counter=33, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=21, b=13, c=21, counter=33, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=21, b=13, c=21, counter=33, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=21, b=13, c=21, counter=33, d=1, k=0, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=21, b=13, c=8, counter=33, d=1, k=1, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=8, counter=34, counter++=33, d=1, k=1, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=21, b=13, c=8, counter=34, d=1, k=1, p=13, q=-21, r=-8, s=13, temp=5, v=13, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=13, b=8, c=8, counter=34, d=1, k=1, p=-21, q=34, r=13, s=-21, temp=-8, v=13, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=8, counter=35, counter++=34, d=1, k=1, p=-21, q=34, r=13, s=-21, temp=-8, v=13, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=13, b=8, c=13, counter=35, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=13, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=13, counter=36, counter++=35, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=13, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=13, b=8, c=13, counter=36, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=13, counter=37, counter++=36, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=13, b=8, c=13, counter=37, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=13, b=8, c=13, counter=37, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=13, b=8, c=13, counter=37, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=13, b=8, c=13, counter=37, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=13, b=8, c=13, counter=37, d=1, k=0, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=13, b=8, c=5, counter=37, d=1, k=1, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=5, counter=38, counter++=37, d=1, k=1, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=13, b=8, c=5, counter=38, d=1, k=1, p=-21, q=34, r=13, s=-21, temp=-8, v=8, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=8, b=5, c=5, counter=38, d=1, k=1, p=34, q=-55, r=-21, s=34, temp=13, v=8, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=5, counter=39, counter++=38, d=1, k=1, p=34, q=-55, r=-21, s=34, temp=13, v=8, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=8, b=5, c=8, counter=39, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=8, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=8, counter=40, counter++=39, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=8, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=8, b=5, c=8, counter=40, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=8, counter=41, counter++=40, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=8, b=5, c=8, counter=41, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=5, c=8, counter=41, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=8, b=5, c=8, counter=41, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=8, b=5, c=8, counter=41, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=8, b=5, c=8, counter=41, d=1, k=0, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=8, b=5, c=3, counter=41, d=1, k=1, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=3, counter=42, counter++=41, d=1, k=1, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=8, b=5, c=3, counter=42, d=1, k=1, p=34, q=-55, r=-21, s=34, temp=13, v=5, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=5, b=3, c=3, counter=42, d=1, k=1, p=-55, q=89, r=34, s=-55, temp=-21, v=5, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=3, counter=43, counter++=42, d=1, k=1, p=-55, q=89, r=34, s=-55, temp=-21, v=5, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=5, b=3, c=5, counter=43, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=5, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=5, counter=44, counter++=43, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=5, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=5, b=3, c=5, counter=44, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=5, counter=45, counter++=44, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=5, b=3, c=5, counter=45, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=3, c=5, counter=45, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=3, c=5, counter=45, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=5, b=3, c=5, counter=45, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=5, b=3, c=5, counter=45, d=1, k=0, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=5, b=3, c=2, counter=45, d=1, k=1, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=2, counter=46, counter++=45, d=1, k=1, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=5, b=3, c=2, counter=46, d=1, k=1, p=-55, q=89, r=34, s=-55, temp=-21, v=3, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=3, b=2, c=2, counter=46, d=1, k=1, p=89, q=-144, r=-55, s=89, temp=34, v=3, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=2, counter=47, counter++=46, d=1, k=1, p=89, q=-144, r=-55, s=89, temp=34, v=3, x=377, y=610] [L34] COND TRUE counter++<50 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [\old(counter)=0, a=3, b=2, c=3, counter=47, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=3, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=3, counter=48, counter++=47, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=3, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [\old(counter)=0, a=3, b=2, c=3, counter=48, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L48] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=3, counter=49, counter++=48, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L48] COND TRUE counter++<50 [L49] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L49] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=3, b=2, c=3, counter=49, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L50] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L50] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=3, b=2, c=3, counter=49, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L51] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L51] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=3, b=2, c=3, counter=49, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L52] CALL __VERIFIER_assert(v == b * d) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L52] RET __VERIFIER_assert(v == b * d) VAL [\old(counter)=0, a=3, b=2, c=3, counter=49, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L54] COND TRUE !(c >= 2 * v) VAL [\old(counter)=0, a=3, b=2, c=3, counter=49, d=1, k=0, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L59] c = c - v [L60] k = k + d VAL [\old(counter)=0, a=3, b=2, c=1, counter=49, d=1, k=1, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L41] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=1, counter=50, counter++=49, d=1, k=1, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L41] COND TRUE counter++<50 [L42] COND TRUE !(c >= b) VAL [\old(counter)=0, a=3, b=2, c=1, counter=50, d=1, k=1, p=89, q=-144, r=-55, s=89, temp=34, v=2, x=377, y=610] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [\old(counter)=0, a=2, b=1, c=1, counter=50, d=1, k=1, p=-144, q=233, r=89, s=-144, temp=-55, v=2, x=377, y=610] [L34] EXPR counter++ VAL [\old(counter)=0, a=2, b=1, c=1, counter=51, counter++=50, d=1, k=1, p=-144, q=233, r=89, s=-144, temp=-55, v=2, x=377, y=610] [L34] COND FALSE !(counter++<50) [L73] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a) VAL [\old(cond)=0, \old(counter)=0, counter=51] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 231.6s, OverallIterations: 34, TraceHistogramMax: 49, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.2s, AutomataDifference: 142.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 13086 SdHoareTripleChecker+Valid, 79.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13009 mSDsluCounter, 16395 SdHoareTripleChecker+Invalid, 77.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13483 mSDsCounter, 9032 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15108 IncrementalHoareTripleChecker+Invalid, 24150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9032 mSolverCounterUnsat, 2912 mSDtfsCounter, 15108 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6464 GetRequests, 5388 SyntacticMatches, 17 SemanticMatches, 1059 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13284 ImplicationChecksByTransitivity, 69.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17885occurred in iteration=30, InterpolantAutomatonStates: 1006, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 33 MinimizatonAttempts, 4739 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 43.3s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 3825 NumberOfCodeBlocks, 3403 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 5912 ConstructedInterpolants, 0 QuantifiedInterpolants, 22742 SizeOfPredicates, 322 NumberOfNonLiveVariables, 9118 ConjunctsInSsa, 989 ConjunctsInUnsatCore, 54 InterpolantComputations, 13 PerfectInterpolantSequences, 20412/38480 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 02:34:52,296 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...