/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/egcd2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 06:47:37,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 06:47:37,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 06:47:37,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 06:47:37,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 06:47:37,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 06:47:37,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 06:47:37,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 06:47:37,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 06:47:37,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 06:47:37,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 06:47:37,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 06:47:37,743 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 06:47:37,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 06:47:37,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 06:47:37,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 06:47:37,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 06:47:37,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 06:47:37,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 06:47:37,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 06:47:37,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 06:47:37,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 06:47:37,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 06:47:37,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 06:47:37,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 06:47:37,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 06:47:37,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 06:47:37,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 06:47:37,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 06:47:37,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 06:47:37,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 06:47:37,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 06:47:37,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 06:47:37,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 06:47:37,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 06:47:37,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 06:47:37,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 06:47:37,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 06:47:37,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 06:47:37,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 06:47:37,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:47:37,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 06:47:37,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 06:47:37,783 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 06:47:37,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 06:47:37,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 06:47:38,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 06:47:38,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 06:47:38,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 06:47:38,014 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 06:47:38,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-04-06 06:47:38,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22507e17a/9b012870b419474786406230c47990da/FLAG418c4c482 [2022-04-06 06:47:38,467 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 06:47:38,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-04-06 06:47:38,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22507e17a/9b012870b419474786406230c47990da/FLAG418c4c482 [2022-04-06 06:47:38,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22507e17a/9b012870b419474786406230c47990da [2022-04-06 06:47:38,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 06:47:38,486 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 06:47:38,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 06:47:38,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 06:47:38,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 06:47:38,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c081743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38, skipping insertion in model container [2022-04-06 06:47:38,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 06:47:38,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 06:47:38,700 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/egcd2-ll_valuebound1.c[490,503] [2022-04-06 06:47:38,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:47:38,745 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 06:47:38,758 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/egcd2-ll_valuebound1.c[490,503] [2022-04-06 06:47:38,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:47:38,795 INFO L208 MainTranslator]: Completed translation [2022-04-06 06:47:38,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38 WrapperNode [2022-04-06 06:47:38,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 06:47:38,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 06:47:38,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 06:47:38,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 06:47:38,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 06:47:38,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 06:47:38,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 06:47:38,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 06:47:38,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (1/1) ... [2022-04-06 06:47:38,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:47:38,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:38,868 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) [2022-04-06 06:47:38,889 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 [2022-04-06 06:47:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 06:47:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 06:47:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 06:47:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 06:47:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 06:47:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 06:47:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 06:47:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 06:47:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 06:47:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 06:47:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 06:47:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 06:47:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 06:47:38,964 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 06:47:38,965 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 06:47:39,103 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 06:47:39,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 06:47:39,109 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-06 06:47:39,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:47:39 BoogieIcfgContainer [2022-04-06 06:47:39,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 06:47:39,112 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 06:47:39,112 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 06:47:39,113 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 06:47:39,116 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:47:39" (1/1) ... [2022-04-06 06:47:39,133 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 06:47:39,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:47:39 BasicIcfg [2022-04-06 06:47:39,151 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 06:47:39,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 06:47:39,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 06:47:39,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 06:47:39,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:47:38" (1/4) ... [2022-04-06 06:47:39,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d4693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:47:39, skipping insertion in model container [2022-04-06 06:47:39,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:47:38" (2/4) ... [2022-04-06 06:47:39,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d4693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:47:39, skipping insertion in model container [2022-04-06 06:47:39,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:47:39" (3/4) ... [2022-04-06 06:47:39,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d4693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:47:39, skipping insertion in model container [2022-04-06 06:47:39,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:47:39" (4/4) ... [2022-04-06 06:47:39,170 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.cJordan [2022-04-06 06:47:39,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 06:47:39,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 06:47:39,227 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 06:47:39,237 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 [2022-04-06 06:47:39,237 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 06:47:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-06 06:47:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 06:47:39,265 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:39,266 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2022-04-06 06:47:39,266 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:39,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1630657446, now seen corresponding path program 1 times [2022-04-06 06:47:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:39,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379601875] [2022-04-06 06:47:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:39,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 06:47:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 06:47:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 06:47:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 06:47:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 06:47:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 06:47:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 06:47:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-06 06:47:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379601875] [2022-04-06 06:47:39,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379601875] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:47:39,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:47:39,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 06:47:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175243239] [2022-04-06 06:47:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:47:39,483 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 06:47:39,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 06:47:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:47:39,507 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 06:47:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:39,621 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-04-06 06:47:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 06:47:39,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-04-06 06:47:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:39,630 INFO L225 Difference]: With dead ends: 40 [2022-04-06 06:47:39,630 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 06:47:39,632 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:47:39,636 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:39,638 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:47:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 06:47:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-06 06:47:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 06:47:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-04-06 06:47:39,677 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-04-06 06:47:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:39,677 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-04-06 06:47:39,677 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 06:47:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-04-06 06:47:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-06 06:47:39,679 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:39,680 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2022-04-06 06:47:39,680 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 06:47:39,682 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:39,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1790145708, now seen corresponding path program 1 times [2022-04-06 06:47:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:39,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270752384] [2022-04-06 06:47:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:39,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:39,728 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:39,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032017042] [2022-04-06 06:47:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:39,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:39,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:39,735 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) [2022-04-06 06:47:39,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 06:47:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:39,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 06:47:39,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-06 06:47:39,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-06 06:47:40,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:40,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270752384] [2022-04-06 06:47:40,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:40,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032017042] [2022-04-06 06:47:40,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032017042] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:47:40,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:47:40,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-04-06 06:47:40,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77061411] [2022-04-06 06:47:40,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:40,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 06:47:40,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:40,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 06:47:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-06 06:47:40,174 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 06:47:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:40,300 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2022-04-06 06:47:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 06:47:40,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-04-06 06:47:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:40,304 INFO L225 Difference]: With dead ends: 44 [2022-04-06 06:47:40,304 INFO L226 Difference]: Without dead ends: 44 [2022-04-06 06:47:40,304 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-06 06:47:40,305 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:40,306 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 104 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:47:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-06 06:47:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-04-06 06:47:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 06:47:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-04-06 06:47:40,320 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2022-04-06 06:47:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:40,321 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-04-06 06:47:40,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 06:47:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-04-06 06:47:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 06:47:40,322 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:40,322 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2022-04-06 06:47:40,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 06:47:40,535 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 [2022-04-06 06:47:40,536 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 375385207, now seen corresponding path program 1 times [2022-04-06 06:47:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:40,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30493591] [2022-04-06 06:47:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:40,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:40,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514445173] [2022-04-06 06:47:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:40,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:40,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:40,564 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) [2022-04-06 06:47:40,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 06:47:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:40,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 06:47:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-06 06:47:40,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-06 06:47:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:40,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30493591] [2022-04-06 06:47:40,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:40,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514445173] [2022-04-06 06:47:40,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514445173] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 06:47:40,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 06:47:40,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-06 06:47:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088565234] [2022-04-06 06:47:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:47:40,879 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 06:47:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 06:47:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-04-06 06:47:40,880 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-04-06 06:47:40,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:40,928 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-04-06 06:47:40,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 06:47:40,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 45 [2022-04-06 06:47:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:40,929 INFO L225 Difference]: With dead ends: 41 [2022-04-06 06:47:40,930 INFO L226 Difference]: Without dead ends: 41 [2022-04-06 06:47:40,930 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-06 06:47:40,931 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:40,931 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 137 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:47:40,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-06 06:47:40,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-06 06:47:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 06:47:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-04-06 06:47:40,937 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 45 [2022-04-06 06:47:40,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:40,937 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-04-06 06:47:40,937 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-04-06 06:47:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-04-06 06:47:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 06:47:40,939 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:40,939 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2022-04-06 06:47:40,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:41,158 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 [2022-04-06 06:47:41,159 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash -788787523, now seen corresponding path program 1 times [2022-04-06 06:47:41,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:41,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455038640] [2022-04-06 06:47:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:41,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:41,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:41,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762331375] [2022-04-06 06:47:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:41,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:41,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:41,188 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) [2022-04-06 06:47:41,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 06:47:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:41,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2022-04-06 06:47:41,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 06:47:41,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:41,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:41,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455038640] [2022-04-06 06:47:41,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:41,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762331375] [2022-04-06 06:47:41,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762331375] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 06:47:41,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 06:47:41,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-04-06 06:47:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188867116] [2022-04-06 06:47:41,609 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:41,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 06:47:41,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 06:47:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-04-06 06:47:41,611 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-06 06:47:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:41,779 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-04-06 06:47:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 06:47:41,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2022-04-06 06:47:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:41,780 INFO L225 Difference]: With dead ends: 52 [2022-04-06 06:47:41,780 INFO L226 Difference]: Without dead ends: 52 [2022-04-06 06:47:41,781 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-04-06 06:47:41,782 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:41,782 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 159 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:47:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-06 06:47:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-04-06 06:47:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-06 06:47:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-04-06 06:47:41,788 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 50 [2022-04-06 06:47:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:41,788 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-04-06 06:47:41,788 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-06 06:47:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-04-06 06:47:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 06:47:41,789 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:41,790 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2022-04-06 06:47:41,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:41,999 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 [2022-04-06 06:47:42,000 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -735644649, now seen corresponding path program 1 times [2022-04-06 06:47:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:42,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70098028] [2022-04-06 06:47:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:42,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:42,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:42,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546277913] [2022-04-06 06:47:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:42,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:42,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:42,023 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) [2022-04-06 06:47:42,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 06:47:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:42,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 06:47:42,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-04-06 06:47:42,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:42,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:42,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70098028] [2022-04-06 06:47:42,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:42,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546277913] [2022-04-06 06:47:42,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546277913] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 06:47:42,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 06:47:42,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-06 06:47:42,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332089341] [2022-04-06 06:47:42,410 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:42,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 06:47:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:42,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 06:47:42,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 06:47:42,411 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-04-06 06:47:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:42,526 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2022-04-06 06:47:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 06:47:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2022-04-06 06:47:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:42,528 INFO L225 Difference]: With dead ends: 56 [2022-04-06 06:47:42,528 INFO L226 Difference]: Without dead ends: 56 [2022-04-06 06:47:42,528 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 06:47:42,529 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:42,529 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 179 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:47:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-04-06 06:47:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-04-06 06:47:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-06 06:47:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-04-06 06:47:42,535 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 55 [2022-04-06 06:47:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:42,535 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-04-06 06:47:42,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-04-06 06:47:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-04-06 06:47:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 06:47:42,536 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:42,537 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 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, 1] [2022-04-06 06:47:42,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:42,751 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 [2022-04-06 06:47:42,752 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1700404515, now seen corresponding path program 1 times [2022-04-06 06:47:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:42,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647708620] [2022-04-06 06:47:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:42,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:42,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230922519] [2022-04-06 06:47:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:42,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:42,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:42,765 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) [2022-04-06 06:47:42,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 06:47:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:42,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-06 06:47:42,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-06 06:47:43,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:43,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:43,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647708620] [2022-04-06 06:47:43,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:43,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230922519] [2022-04-06 06:47:43,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230922519] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 06:47:43,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 06:47:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-04-06 06:47:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678195737] [2022-04-06 06:47:43,348 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:43,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 06:47:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 06:47:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-04-06 06:47:43,349 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-04-06 06:47:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:43,516 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-04-06 06:47:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 06:47:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 60 [2022-04-06 06:47:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:43,518 INFO L225 Difference]: With dead ends: 62 [2022-04-06 06:47:43,518 INFO L226 Difference]: Without dead ends: 62 [2022-04-06 06:47:43,518 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-04-06 06:47:43,519 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:43,519 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 122 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:47:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-04-06 06:47:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2022-04-06 06:47:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-06 06:47:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-04-06 06:47:43,525 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 60 [2022-04-06 06:47:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:43,525 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-04-06 06:47:43,525 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-04-06 06:47:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-04-06 06:47:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 06:47:43,526 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:43,527 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2022-04-06 06:47:43,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:43,738 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 [2022-04-06 06:47:43,739 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2004479621, now seen corresponding path program 1 times [2022-04-06 06:47:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:43,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691833822] [2022-04-06 06:47:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:43,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:43,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212731091] [2022-04-06 06:47:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:43,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:43,784 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) [2022-04-06 06:47:43,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 06:47:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:43,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 06:47:43,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-04-06 06:47:43,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-04-06 06:47:44,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691833822] [2022-04-06 06:47:44,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212731091] [2022-04-06 06:47:44,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212731091] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:47:44,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:47:44,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 06:47:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482062596] [2022-04-06 06:47:44,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:44,116 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 06:47:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 06:47:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-06 06:47:44,117 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-04-06 06:47:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:44,294 INFO L93 Difference]: Finished difference Result 98 states and 137 transitions. [2022-04-06 06:47:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 06:47:44,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2022-04-06 06:47:44,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:44,302 INFO L225 Difference]: With dead ends: 98 [2022-04-06 06:47:44,302 INFO L226 Difference]: Without dead ends: 98 [2022-04-06 06:47:44,303 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-06 06:47:44,304 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:44,305 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 299 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:47:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-04-06 06:47:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2022-04-06 06:47:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 06:47:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-04-06 06:47:44,326 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 69 [2022-04-06 06:47:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:44,326 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-04-06 06:47:44,326 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-04-06 06:47:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-04-06 06:47:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 06:47:44,329 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:44,329 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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] [2022-04-06 06:47:44,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:44,543 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 [2022-04-06 06:47:44,544 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -966489810, now seen corresponding path program 1 times [2022-04-06 06:47:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:44,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391667631] [2022-04-06 06:47:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:44,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:44,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:44,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278085892] [2022-04-06 06:47:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:44,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:44,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:44,557 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) [2022-04-06 06:47:44,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 06:47:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:44,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 06:47:44,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-04-06 06:47:44,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-04-06 06:47:45,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391667631] [2022-04-06 06:47:45,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278085892] [2022-04-06 06:47:45,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278085892] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:47:45,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:47:45,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2022-04-06 06:47:45,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993310584] [2022-04-06 06:47:45,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:45,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 06:47:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:45,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 06:47:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-04-06 06:47:45,120 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2022-04-06 06:47:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:45,307 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2022-04-06 06:47:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 06:47:45,308 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) Word has length 75 [2022-04-06 06:47:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:45,309 INFO L225 Difference]: With dead ends: 59 [2022-04-06 06:47:45,309 INFO L226 Difference]: Without dead ends: 59 [2022-04-06 06:47:45,309 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-04-06 06:47:45,310 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 40 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:45,310 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 190 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:47:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-06 06:47:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-04-06 06:47:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-06 06:47:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-04-06 06:47:45,314 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 75 [2022-04-06 06:47:45,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:45,315 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-04-06 06:47:45,315 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2022-04-06 06:47:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-04-06 06:47:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-06 06:47:45,316 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:45,316 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:47:45,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:45,527 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 [2022-04-06 06:47:45,528 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash -757951041, now seen corresponding path program 1 times [2022-04-06 06:47:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167600002] [2022-04-06 06:47:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:45,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68335832] [2022-04-06 06:47:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:45,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:45,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:45,541 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) [2022-04-06 06:47:45,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 06:47:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:45,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-06 06:47:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-04-06 06:47:46,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-04-06 06:47:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:46,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167600002] [2022-04-06 06:47:46,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:46,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68335832] [2022-04-06 06:47:46,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68335832] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:47:46,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:47:46,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-04-06 06:47:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440861524] [2022-04-06 06:47:46,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:46,759 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 06:47:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 06:47:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-04-06 06:47:46,760 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 16 states have internal predecessors, (38), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-04-06 06:47:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:48,432 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2022-04-06 06:47:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 06:47:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 16 states have internal predecessors, (38), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 91 [2022-04-06 06:47:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:48,434 INFO L225 Difference]: With dead ends: 89 [2022-04-06 06:47:48,434 INFO L226 Difference]: Without dead ends: 89 [2022-04-06 06:47:48,435 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2022-04-06 06:47:48,435 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 46 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:48,435 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 298 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 06:47:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-04-06 06:47:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2022-04-06 06:47:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 48 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 06:47:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 102 transitions. [2022-04-06 06:47:48,445 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 102 transitions. Word has length 91 [2022-04-06 06:47:48,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:48,446 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 102 transitions. [2022-04-06 06:47:48,446 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 16 states have internal predecessors, (38), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-04-06 06:47:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 102 transitions. [2022-04-06 06:47:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-04-06 06:47:48,447 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:48,447 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:47:48,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:48,675 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 [2022-04-06 06:47:48,676 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash -371592377, now seen corresponding path program 1 times [2022-04-06 06:47:48,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:48,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844463143] [2022-04-06 06:47:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:48,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:48,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814729922] [2022-04-06 06:47:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:48,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:48,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:48,688 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) [2022-04-06 06:47:48,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 06:47:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:47:48,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 06:47:48,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 35 proven. 30 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-04-06 06:47:49,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-04-06 06:47:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:49,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844463143] [2022-04-06 06:47:49,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:49,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814729922] [2022-04-06 06:47:49,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814729922] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:47:49,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:47:49,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 19 [2022-04-06 06:47:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359736136] [2022-04-06 06:47:49,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:49,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 06:47:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 06:47:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-04-06 06:47:49,560 INFO L87 Difference]: Start difference. First operand 83 states and 102 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-04-06 06:47:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:50,226 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2022-04-06 06:47:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 06:47:50,227 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 96 [2022-04-06 06:47:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:50,227 INFO L225 Difference]: With dead ends: 87 [2022-04-06 06:47:50,227 INFO L226 Difference]: Without dead ends: 72 [2022-04-06 06:47:50,228 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-04-06 06:47:50,229 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:50,229 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 175 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 06:47:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-04-06 06:47:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-04-06 06:47:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 25 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-06 06:47:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2022-04-06 06:47:50,234 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 96 [2022-04-06 06:47:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:50,235 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2022-04-06 06:47:50,235 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-04-06 06:47:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2022-04-06 06:47:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-04-06 06:47:50,236 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:47:50,236 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-04-06 06:47:50,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-06 06:47:50,459 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 [2022-04-06 06:47:50,460 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:47:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:47:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1694952883, now seen corresponding path program 2 times [2022-04-06 06:47:50,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:47:50,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328294041] [2022-04-06 06:47:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:47:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:47:50,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:47:50,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378668017] [2022-04-06 06:47:50,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 06:47:50,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:47:50,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:47:50,486 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) [2022-04-06 06:47:50,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 06:47:50,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 06:47:50,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 06:47:50,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 06:47:50,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:47:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-04-06 06:47:50,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:47:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-04-06 06:47:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:47:51,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328294041] [2022-04-06 06:47:51,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:47:51,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378668017] [2022-04-06 06:47:51,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378668017] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:47:51,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:47:51,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-04-06 06:47:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211750580] [2022-04-06 06:47:51,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:47:51,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 06:47:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:47:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 06:47:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-04-06 06:47:51,212 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 13 states have call predecessors, (45), 13 states have call successors, (45) [2022-04-06 06:47:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:47:51,647 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2022-04-06 06:47:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 06:47:51,648 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 13 states have call predecessors, (45), 13 states have call successors, (45) Word has length 135 [2022-04-06 06:47:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:47:51,648 INFO L225 Difference]: With dead ends: 64 [2022-04-06 06:47:51,648 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 06:47:51,649 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-04-06 06:47:51,649 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 06:47:51,649 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 264 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 06:47:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 06:47:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 06:47:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 06:47:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 06:47:51,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 135 [2022-04-06 06:47:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:47:51,650 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 06:47:51,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (45), 13 states have call predecessors, (45), 13 states have call successors, (45) [2022-04-06 06:47:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 06:47:51,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 06:47:51,653 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 06:47:51,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 06:47:51,863 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 [2022-04-06 06:47:51,866 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:47:51,867 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 06:47:51,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:47:51 BasicIcfg [2022-04-06 06:47:51,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 06:47:51,870 INFO L158 Benchmark]: Toolchain (without parser) took 13384.28ms. Allocated memory was 191.9MB in the beginning and 325.1MB in the end (delta: 133.2MB). Free memory was 136.4MB in the beginning and 152.0MB in the end (delta: -15.6MB). Peak memory consumption was 118.5MB. Max. memory is 8.0GB. [2022-04-06 06:47:51,870 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory is still 153.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 06:47:51,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.32ms. Allocated memory is still 191.9MB. Free memory was 136.2MB in the beginning and 167.0MB in the end (delta: -30.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-04-06 06:47:51,870 INFO L158 Benchmark]: Boogie Preprocessor took 35.93ms. Allocated memory is still 191.9MB. Free memory was 167.0MB in the beginning and 165.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 06:47:51,871 INFO L158 Benchmark]: RCFGBuilder took 278.22ms. Allocated memory is still 191.9MB. Free memory was 165.4MB in the beginning and 153.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 06:47:51,871 INFO L158 Benchmark]: IcfgTransformer took 38.69ms. Allocated memory is still 191.9MB. Free memory was 153.3MB in the beginning and 152.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 06:47:51,872 INFO L158 Benchmark]: TraceAbstraction took 12705.57ms. Allocated memory was 191.9MB in the beginning and 325.1MB in the end (delta: 133.2MB). Free memory was 151.8MB in the beginning and 152.0MB in the end (delta: -191.3kB). Peak memory consumption was 133.9MB. Max. memory is 8.0GB. [2022-04-06 06:47:51,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory is still 153.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.32ms. Allocated memory is still 191.9MB. Free memory was 136.2MB in the beginning and 167.0MB in the end (delta: -30.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.93ms. Allocated memory is still 191.9MB. Free memory was 167.0MB in the beginning and 165.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 278.22ms. Allocated memory is still 191.9MB. Free memory was 165.4MB in the beginning and 153.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 38.69ms. Allocated memory is still 191.9MB. Free memory was 153.3MB in the beginning and 152.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 12705.57ms. Allocated memory was 191.9MB in the beginning and 325.1MB in the end (delta: 133.2MB). Free memory was 151.8MB in the beginning and 152.0MB in the end (delta: -191.3kB). Peak memory consumption was 133.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 371 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 316 mSDsluCounter, 1969 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1531 mSDsCounter, 409 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2350 IncrementalHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 409 mSolverCounterUnsat, 438 mSDtfsCounter, 2350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1351 GetRequests, 1181 SyntacticMatches, 8 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=7, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 4427 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1922 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 2678/2998 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-06 06:47:51,894 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...