/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 23:00:12,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 23:00:12,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 23:00:12,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 23:00:12,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 23:00:12,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 23:00:12,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 23:00:12,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 23:00:12,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 23:00:12,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 23:00:12,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 23:00:12,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 23:00:12,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 23:00:12,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 23:00:12,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 23:00:12,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 23:00:12,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 23:00:12,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 23:00:12,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 23:00:12,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 23:00:12,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 23:00:12,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 23:00:12,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 23:00:12,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 23:00:12,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 23:00:12,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 23:00:12,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 23:00:12,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 23:00:12,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 23:00:12,864 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 23:00:12,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 23:00:12,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 23:00:12,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 23:00:12,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 23:00:12,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 23:00:12,867 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 23:00:12,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 23:00:12,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 23:00:12,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 23:00:12,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 23:00:12,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 23:00:12,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 23:00:12,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 23:00:12,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 23:00:12,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 23:00:12,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 23:00:12,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 23:00:12,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 23:00:12,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 23:00:12,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 23:00:12,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 23:00:12,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 23:00:12,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 23:00:12,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 23:00:12,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 23:00:12,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 23:00:12,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 23:00:12,872 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 23:00:12,872 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 23:00:13,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 23:00:13,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 23:00:13,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 23:00:13,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 23:00:13,125 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 23:00:13,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-02-23 23:00:13,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26159c820/f928097bd32b4a9a956f056183bfb5bd/FLAG747e8e767 [2022-02-23 23:00:13,546 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 23:00:13,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-02-23 23:00:13,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26159c820/f928097bd32b4a9a956f056183bfb5bd/FLAG747e8e767 [2022-02-23 23:00:13,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26159c820/f928097bd32b4a9a956f056183bfb5bd [2022-02-23 23:00:13,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 23:00:13,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 23:00:13,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 23:00:13,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 23:00:13,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 23:00:13,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:00:13" (1/1) ... [2022-02-23 23:00:13,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4ee04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:13, skipping insertion in model container [2022-02-23 23:00:13,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:00:13" (1/1) ... [2022-02-23 23:00:13,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 23:00:14,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 23:00:14,152 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/hard-ll_valuebound1.c[538,551] [2022-02-23 23:00:14,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 23:00:14,172 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 23:00:14,180 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/hard-ll_valuebound1.c[538,551] [2022-02-23 23:00:14,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 23:00:14,199 INFO L208 MainTranslator]: Completed translation [2022-02-23 23:00:14,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14 WrapperNode [2022-02-23 23:00:14,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 23:00:14,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 23:00:14,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 23:00:14,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 23:00:14,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 23:00:14,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 23:00:14,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 23:00:14,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 23:00:14,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 23:00:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:14,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 23:00:14,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 23:00:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 23:00:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 23:00:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 23:00:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 23:00:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 23:00:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 23:00:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 23:00:14,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 23:00:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 23:00:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 23:00:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 23:00:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 23:00:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 23:00:14,414 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 23:00:14,416 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 23:00:14,546 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 23:00:14,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 23:00:14,552 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-23 23:00:14,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:00:14 BoogieIcfgContainer [2022-02-23 23:00:14,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 23:00:14,554 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 23:00:14,554 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 23:00:14,556 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 23:00:14,558 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:00:14" (1/1) ... [2022-02-23 23:00:14,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 11:00:14 BasicIcfg [2022-02-23 23:00:14,575 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 23:00:14,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 23:00:14,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 23:00:14,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 23:00:14,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:00:13" (1/4) ... [2022-02-23 23:00:14,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d6afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:00:14, skipping insertion in model container [2022-02-23 23:00:14,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:00:14" (2/4) ... [2022-02-23 23:00:14,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d6afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:00:14, skipping insertion in model container [2022-02-23 23:00:14,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:00:14" (3/4) ... [2022-02-23 23:00:14,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d6afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:00:14, skipping insertion in model container [2022-02-23 23:00:14,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 11:00:14" (4/4) ... [2022-02-23 23:00:14,583 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.cqvasr [2022-02-23 23:00:14,588 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 23:00:14,589 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 23:00:14,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 23:00:14,634 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 23:00:14,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 23:00:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 23:00:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-23 23:00:14,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:14,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:14,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1011787902, now seen corresponding path program 1 times [2022-02-23 23:00:14,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:14,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021541725] [2022-02-23 23:00:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 23:00:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 23:00:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 23:00:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 23:00:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 23:00:14,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:14,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021541725] [2022-02-23 23:00:14,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021541725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:00:14,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:00:14,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 23:00:14,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983523861] [2022-02-23 23:00:14,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:00:14,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 23:00:14,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 23:00:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 23:00:14,865 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 23:00:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:14,945 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-02-23 23:00:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 23:00:14,948 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-02-23 23:00:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:14,954 INFO L225 Difference]: With dead ends: 69 [2022-02-23 23:00:14,955 INFO L226 Difference]: Without dead ends: 33 [2022-02-23 23:00:14,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 23:00:14,960 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:14,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:00:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-23 23:00:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-23 23:00:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 23:00:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-02-23 23:00:14,994 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-02-23 23:00:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:14,995 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-02-23 23:00:14,995 INFO L471 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-23 23:00:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-02-23 23:00:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-23 23:00:14,997 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:14,997 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:14,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 23:00:14,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1710049411, now seen corresponding path program 1 times [2022-02-23 23:00:14,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:14,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684227773] [2022-02-23 23:00:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 23:00:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 23:00:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 23:00:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 23:00:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 23:00:15,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:15,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684227773] [2022-02-23 23:00:15,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684227773] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:00:15,120 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:00:15,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 23:00:15,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834488071] [2022-02-23 23:00:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:00:15,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 23:00:15,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:15,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 23:00:15,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 23:00:15,123 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-23 23:00:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:15,354 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-02-23 23:00:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 23:00:15,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-02-23 23:00:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:15,359 INFO L225 Difference]: With dead ends: 46 [2022-02-23 23:00:15,359 INFO L226 Difference]: Without dead ends: 44 [2022-02-23 23:00:15,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 23:00:15,362 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:15,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 23:00:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-23 23:00:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-02-23 23:00:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 23:00:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-02-23 23:00:15,373 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-02-23 23:00:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:15,374 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-02-23 23:00:15,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-02-23 23:00:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-02-23 23:00:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 23:00:15,375 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:15,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:15,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 23:00:15,376 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:15,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:15,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1042498848, now seen corresponding path program 1 times [2022-02-23 23:00:15,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:15,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252190845] [2022-02-23 23:00:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:15,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 23:00:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 23:00:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 23:00:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 23:00:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-23 23:00:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 23:00:15,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:15,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252190845] [2022-02-23 23:00:15,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252190845] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:00:15,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:00:15,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 23:00:15,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922401430] [2022-02-23 23:00:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:00:15,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 23:00:15,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 23:00:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 23:00:15,550 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 23:00:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:15,773 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-02-23 23:00:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 23:00:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-02-23 23:00:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:15,778 INFO L225 Difference]: With dead ends: 50 [2022-02-23 23:00:15,778 INFO L226 Difference]: Without dead ends: 48 [2022-02-23 23:00:15,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 23:00:15,785 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:15,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 23:00:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-23 23:00:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-02-23 23:00:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 23:00:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-02-23 23:00:15,801 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-02-23 23:00:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:15,801 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-02-23 23:00:15,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 23:00:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-02-23 23:00:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-23 23:00:15,802 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:15,802 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-02-23 23:00:15,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-23 23:00:15,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1436069466, now seen corresponding path program 1 times [2022-02-23 23:00:15,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:15,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262530387] [2022-02-23 23:00:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:15,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:15,831 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:15,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925603633] [2022-02-23 23:00:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:15,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:15,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:15,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:00:15,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 23:00:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:15,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-23 23:00:15,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-23 23:00:16,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 23:00:16,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:16,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262530387] [2022-02-23 23:00:16,308 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:16,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925603633] [2022-02-23 23:00:16,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925603633] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:00:16,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:00:16,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 23:00:16,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309339443] [2022-02-23 23:00:16,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:00:16,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 23:00:16,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 23:00:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-23 23:00:16,312 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-02-23 23:00:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:16,433 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-02-23 23:00:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 23:00:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-02-23 23:00:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:16,436 INFO L225 Difference]: With dead ends: 69 [2022-02-23 23:00:16,436 INFO L226 Difference]: Without dead ends: 55 [2022-02-23 23:00:16,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-23 23:00:16,444 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:16,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 248 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 23:00:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-23 23:00:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-02-23 23:00:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 23:00:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-02-23 23:00:16,471 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-02-23 23:00:16,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:16,472 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-02-23 23:00:16,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-02-23 23:00:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-02-23 23:00:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-23 23:00:16,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:16,476 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2022-02-23 23:00:16,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:16,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:16,691 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:16,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:16,692 INFO L85 PathProgramCache]: Analyzing trace with hash 5711864, now seen corresponding path program 1 times [2022-02-23 23:00:16,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:16,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449015127] [2022-02-23 23:00:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:16,711 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:16,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193308434] [2022-02-23 23:00:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:16,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:16,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:16,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:00:16,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 23:00:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:16,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 23:00:16,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-23 23:00:17,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:00:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-23 23:00:17,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:17,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449015127] [2022-02-23 23:00:17,414 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:17,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193308434] [2022-02-23 23:00:17,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193308434] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:00:17,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:00:17,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-02-23 23:00:17,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696179789] [2022-02-23 23:00:17,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:00:17,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 23:00:17,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 23:00:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-23 23:00:17,416 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-02-23 23:00:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:17,623 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2022-02-23 23:00:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 23:00:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45 [2022-02-23 23:00:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:17,629 INFO L225 Difference]: With dead ends: 76 [2022-02-23 23:00:17,629 INFO L226 Difference]: Without dead ends: 69 [2022-02-23 23:00:17,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-02-23 23:00:17,630 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:17,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 212 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 23:00:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-23 23:00:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-02-23 23:00:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 17 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 23:00:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2022-02-23 23:00:17,640 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 45 [2022-02-23 23:00:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:17,640 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2022-02-23 23:00:17,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-02-23 23:00:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2022-02-23 23:00:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-23 23:00:17,642 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:17,642 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:17,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:17,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:17,856 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1597443315, now seen corresponding path program 1 times [2022-02-23 23:00:17,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:17,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19014297] [2022-02-23 23:00:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:17,872 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:17,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743407093] [2022-02-23 23:00:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:17,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:17,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:17,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:00:17,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 23:00:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:17,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-23 23:00:17,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-23 23:00:18,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:00:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-02-23 23:00:18,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:18,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19014297] [2022-02-23 23:00:18,343 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:18,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743407093] [2022-02-23 23:00:18,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743407093] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-23 23:00:18,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-23 23:00:18,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-02-23 23:00:18,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100726784] [2022-02-23 23:00:18,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:00:18,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 23:00:18,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 23:00:18,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-23 23:00:18,345 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 23:00:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:18,395 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2022-02-23 23:00:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 23:00:18,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-02-23 23:00:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:18,400 INFO L225 Difference]: With dead ends: 79 [2022-02-23 23:00:18,400 INFO L226 Difference]: Without dead ends: 77 [2022-02-23 23:00:18,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-23 23:00:18,402 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 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 [2022-02-23 23:00:18,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:00:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-23 23:00:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2022-02-23 23:00:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 23:00:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2022-02-23 23:00:18,423 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 55 [2022-02-23 23:00:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:18,423 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2022-02-23 23:00:18,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-23 23:00:18,423 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2022-02-23 23:00:18,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-23 23:00:18,424 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:18,425 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:18,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:18,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:18,640 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash -920366345, now seen corresponding path program 1 times [2022-02-23 23:00:18,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:18,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880341431] [2022-02-23 23:00:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:18,651 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:18,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55923609] [2022-02-23 23:00:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:18,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:18,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:18,653 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:00:18,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 23:00:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:18,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-23 23:00:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-02-23 23:00:18,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 23:00:18,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:18,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880341431] [2022-02-23 23:00:18,829 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:18,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55923609] [2022-02-23 23:00:18,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55923609] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 23:00:18,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 23:00:18,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 23:00:18,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934883297] [2022-02-23 23:00:18,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 23:00:18,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 23:00:18,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 23:00:18,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-23 23:00:18,831 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-02-23 23:00:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:18,861 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2022-02-23 23:00:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 23:00:18,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 73 [2022-02-23 23:00:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:18,863 INFO L225 Difference]: With dead ends: 83 [2022-02-23 23:00:18,863 INFO L226 Difference]: Without dead ends: 75 [2022-02-23 23:00:18,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-23 23:00:18,864 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:18,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 23:00:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-23 23:00:18,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-02-23 23:00:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 23:00:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2022-02-23 23:00:18,877 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 73 [2022-02-23 23:00:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:18,878 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2022-02-23 23:00:18,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-02-23 23:00:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2022-02-23 23:00:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-23 23:00:18,883 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:18,883 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:18,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:19,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:19,107 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1689231171, now seen corresponding path program 1 times [2022-02-23 23:00:19,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:19,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088434163] [2022-02-23 23:00:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:19,118 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:19,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975264766] [2022-02-23 23:00:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:19,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:19,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:19,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 23:00:19,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 23:00:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:19,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-23 23:00:19,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-02-23 23:00:19,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:00:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-02-23 23:00:21,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:21,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088434163] [2022-02-23 23:00:21,299 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:21,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975264766] [2022-02-23 23:00:21,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975264766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:00:21,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:00:21,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-02-23 23:00:21,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513266683] [2022-02-23 23:00:21,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:00:21,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-23 23:00:21,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-23 23:00:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-02-23 23:00:21,301 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-02-23 23:00:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:22,771 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2022-02-23 23:00:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-23 23:00:22,772 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 75 [2022-02-23 23:00:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:22,773 INFO L225 Difference]: With dead ends: 126 [2022-02-23 23:00:22,773 INFO L226 Difference]: Without dead ends: 104 [2022-02-23 23:00:22,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-02-23 23:00:22,774 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 60 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:22,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 267 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-23 23:00:22,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-23 23:00:22,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2022-02-23 23:00:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.11864406779661) internal successors, (66), 60 states have internal predecessors, (66), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-02-23 23:00:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2022-02-23 23:00:22,788 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 75 [2022-02-23 23:00:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:22,788 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2022-02-23 23:00:22,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-02-23 23:00:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2022-02-23 23:00:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-23 23:00:22,789 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:22,789 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:22,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-23 23:00:23,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:23,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:23,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:23,004 INFO L85 PathProgramCache]: Analyzing trace with hash -102783885, now seen corresponding path program 1 times [2022-02-23 23:00:23,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:23,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100988900] [2022-02-23 23:00:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:23,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:23,014 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:23,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106755120] [2022-02-23 23:00:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:23,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:23,015 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) [2022-02-23 23:00:23,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 23:00:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:23,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-23 23:00:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-02-23 23:00:25,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:00:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-02-23 23:00:29,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:29,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100988900] [2022-02-23 23:00:29,094 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:29,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106755120] [2022-02-23 23:00:29,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106755120] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:00:29,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:00:29,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-02-23 23:00:29,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272418646] [2022-02-23 23:00:29,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:00:29,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-23 23:00:29,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:29,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-23 23:00:29,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-02-23 23:00:29,096 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 18 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 12 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-02-23 23:00:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:34,611 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2022-02-23 23:00:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-23 23:00:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 12 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 86 [2022-02-23 23:00:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:34,613 INFO L225 Difference]: With dead ends: 154 [2022-02-23 23:00:34,613 INFO L226 Difference]: Without dead ends: 137 [2022-02-23 23:00:34,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=203, Invalid=727, Unknown=0, NotChecked=0, Total=930 [2022-02-23 23:00:34,614 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 57 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:34,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 434 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-23 23:00:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-23 23:00:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2022-02-23 23:00:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 74 states have internal predecessors, (82), 31 states have call successors, (31), 16 states have call predecessors, (31), 15 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-02-23 23:00:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2022-02-23 23:00:34,632 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 86 [2022-02-23 23:00:34,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:34,632 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2022-02-23 23:00:34,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 12 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-02-23 23:00:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2022-02-23 23:00:34,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-23 23:00:34,633 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:34,634 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:34,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:34,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:34,848 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 966352941, now seen corresponding path program 1 times [2022-02-23 23:00:34,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:34,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695149494] [2022-02-23 23:00:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:34,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:34,859 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:34,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487474803] [2022-02-23 23:00:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:34,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:34,863 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) [2022-02-23 23:00:34,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-23 23:00:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 23:00:34,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-23 23:00:34,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-02-23 23:00:35,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:00:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-02-23 23:00:35,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:35,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695149494] [2022-02-23 23:00:35,484 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:35,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487474803] [2022-02-23 23:00:35,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487474803] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:00:35,484 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:00:35,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-02-23 23:00:35,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408368111] [2022-02-23 23:00:35,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:00:35,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 23:00:35,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 23:00:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-23 23:00:35,486 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 8 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-02-23 23:00:35,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:35,719 INFO L93 Difference]: Finished difference Result 127 states and 150 transitions. [2022-02-23 23:00:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 23:00:35,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 8 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 91 [2022-02-23 23:00:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:35,728 INFO L225 Difference]: With dead ends: 127 [2022-02-23 23:00:35,728 INFO L226 Difference]: Without dead ends: 106 [2022-02-23 23:00:35,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-02-23 23:00:35,729 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:35,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 283 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 23:00:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-23 23:00:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-02-23 23:00:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.140625) internal successors, (73), 66 states have internal predecessors, (73), 27 states have call successors, (27), 15 states have call predecessors, (27), 14 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-23 23:00:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2022-02-23 23:00:35,749 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 91 [2022-02-23 23:00:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:35,749 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2022-02-23 23:00:35,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 8 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-02-23 23:00:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2022-02-23 23:00:35,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-23 23:00:35,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:35,761 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:35,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:35,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:35,963 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1448579276, now seen corresponding path program 2 times [2022-02-23 23:00:35,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:35,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151364080] [2022-02-23 23:00:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:35,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:35,972 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:35,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145596334] [2022-02-23 23:00:35,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 23:00:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:35,974 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) [2022-02-23 23:00:35,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-23 23:00:36,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 23:00:36,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 23:00:36,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 23:00:36,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 93 proven. 4 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-02-23 23:00:36,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:00:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-02-23 23:00:36,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:36,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151364080] [2022-02-23 23:00:36,521 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:36,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145596334] [2022-02-23 23:00:36,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145596334] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:00:36,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:00:36,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-02-23 23:00:36,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504773493] [2022-02-23 23:00:36,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:00:36,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 23:00:36,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:36,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 23:00:36,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-23 23:00:36,523 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 5 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-02-23 23:00:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:36,632 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2022-02-23 23:00:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 23:00:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 5 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 108 [2022-02-23 23:00:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:36,633 INFO L225 Difference]: With dead ends: 113 [2022-02-23 23:00:36,633 INFO L226 Difference]: Without dead ends: 101 [2022-02-23 23:00:36,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-23 23:00:36,634 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:36,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 97 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 23:00:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-23 23:00:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-02-23 23:00:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 62 states have internal predecessors, (68), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-23 23:00:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2022-02-23 23:00:36,647 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 108 [2022-02-23 23:00:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:36,647 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2022-02-23 23:00:36,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 5 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-02-23 23:00:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2022-02-23 23:00:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-23 23:00:36,648 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 23:00:36,648 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:36,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:36,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-23 23:00:36,852 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 23:00:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 23:00:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1498631042, now seen corresponding path program 2 times [2022-02-23 23:00:36,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 23:00:36,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272230059] [2022-02-23 23:00:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 23:00:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 23:00:36,869 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 23:00:36,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499197398] [2022-02-23 23:00:36,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 23:00:36,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:36,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 23:00:36,872 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) [2022-02-23 23:00:36,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-23 23:00:36,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 23:00:36,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 23:00:36,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 23:00:36,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 23:00:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 234 proven. 21 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-02-23 23:00:37,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 23:00:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-02-23 23:00:37,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 23:00:37,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272230059] [2022-02-23 23:00:37,565 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 23:00:37,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499197398] [2022-02-23 23:00:37,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499197398] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 23:00:37,566 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 23:00:37,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-02-23 23:00:37,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796467013] [2022-02-23 23:00:37,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 23:00:37,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 23:00:37,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 23:00:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 23:00:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-23 23:00:37,567 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 9 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-02-23 23:00:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 23:00:37,743 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2022-02-23 23:00:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 23:00:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 9 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 116 [2022-02-23 23:00:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 23:00:37,745 INFO L225 Difference]: With dead ends: 105 [2022-02-23 23:00:37,745 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 23:00:37,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-02-23 23:00:37,746 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 23:00:37,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 215 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 23:00:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 23:00:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 23:00:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-23 23:00:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 23:00:37,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-02-23 23:00:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 23:00:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 23:00:37,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 9 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-02-23 23:00:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 23:00:37,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 23:00:37,749 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 23:00:37,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-23 23:00:37,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 23:00:37,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 23:00:40,152 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 23:00:40,153 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 23:00:40,153 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 23:00:40,153 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 23:00:40,153 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-23 23:00:40,153 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 23:00:40,153 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 23:00:40,153 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-02-23 23:00:40,153 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-02-23 23:00:40,153 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-02-23 23:00:40,153 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-02-23 23:00:40,153 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-02-23 23:00:40,153 INFO L861 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-02-23 23:00:40,154 INFO L858 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod main_~A~0 4294967296) 1) (<= (mod main_~B~0 4294967296) 1)) [2022-02-23 23:00:40,154 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~d~0 (* main_~p~0 .cse4))) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse4 main_~r~0) .cse5) (and .cse0 (<= .cse4 1) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-02-23 23:00:40,154 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~d~0 (* main_~p~0 .cse4))) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse4 main_~r~0) .cse5) (and .cse0 (<= .cse4 1) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod main_~B~0 4294967296))) (let ((.cse2 (* main_~q~0 .cse1)) (.cse0 (mod main_~A~0 4294967296))) (and (= (+ .cse0 main_~d~0) (+ main_~r~0 (* main_~p~0 .cse1) .cse2)) (= main_~d~0 .cse1) (<= .cse1 1) (<= 1 .cse1) (= (+ main_~r~0 .cse2) .cse0)))) [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (let ((.cse1 (<= .cse0 1)) (.cse3 (= main_~q~0 0)) (.cse2 (mod main_~A~0 4294967296)) (.cse5 (= main_~p~0 1))) (or (and (< main_~r~0 main_~d~0) (= main_~d~0 (* main_~p~0 .cse0)) (= main_~p~0 2) .cse1 (= (+ main_~r~0 (* main_~q~0 .cse0)) .cse2) .cse3 (<= .cse0 main_~r~0)) (let ((.cse4 (+ main_~d~0 main_~r~0))) (and (= .cse2 (+ main_~r~0 .cse0)) (<= 0 main_~r~0) (= .cse4 .cse2) (<= 1 .cse0) (< (div (+ (* (- 1) (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2))) 1) (- 4294967296)) (+ (div .cse4 4294967296) 1)) (= main_~q~0 1) .cse5)) (and (= main_~d~0 .cse0) (< main_~r~0 .cse0) .cse1 .cse3 (<= .cse2 main_~r~0) .cse5)))) [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~d~0 (* main_~p~0 .cse4))) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse4 main_~r~0) .cse5) (and .cse0 (<= .cse4 1) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~d~0 .cse0) (<= .cse0 1) (<= 1 .cse0) (= main_~p~0 1))) [2022-02-23 23:00:40,154 INFO L854 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (let ((.cse1 (<= .cse0 1)) (.cse3 (= main_~q~0 0)) (.cse2 (mod main_~A~0 4294967296)) (.cse5 (= main_~p~0 1))) (or (and (< main_~r~0 main_~d~0) (= main_~d~0 (* main_~p~0 .cse0)) (= main_~p~0 2) .cse1 (= (+ main_~r~0 (* main_~q~0 .cse0)) .cse2) .cse3 (<= .cse0 main_~r~0)) (let ((.cse4 (+ main_~d~0 main_~r~0))) (and (= .cse2 (+ main_~r~0 .cse0)) (<= 0 main_~r~0) (= .cse4 .cse2) (<= 1 .cse0) (< (div (+ (* (- 1) (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2))) 1) (- 4294967296)) (+ (div .cse4 4294967296) 1)) (= main_~q~0 1) .cse5)) (and (= main_~d~0 .cse0) (< main_~r~0 .cse0) .cse1 .cse3 (<= .cse2 main_~r~0) .cse5)))) [2022-02-23 23:00:40,155 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~d~0 (* main_~p~0 .cse4))) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 (= main_~p~0 2) .cse1 .cse2 .cse3 (<= .cse4 main_~r~0) .cse5) (and .cse0 (<= .cse4 1) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 22 63) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 22 63) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-02-23 23:00:40,155 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-02-23 23:00:40,157 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 23:00:40,158 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 23:00:40,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:00:40 BasicIcfg [2022-02-23 23:00:40,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 23:00:40,172 INFO L158 Benchmark]: Toolchain (without parser) took 26198.67ms. Allocated memory was 191.9MB in the beginning and 276.8MB in the end (delta: 84.9MB). Free memory was 138.8MB in the beginning and 236.3MB in the end (delta: -97.5MB). Peak memory consumption was 132.8MB. Max. memory is 8.0GB. [2022-02-23 23:00:40,172 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory was 154.9MB in the beginning and 154.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 23:00:40,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.70ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 138.7MB in the beginning and 207.0MB in the end (delta: -68.3MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-02-23 23:00:40,172 INFO L158 Benchmark]: Boogie Preprocessor took 27.60ms. Allocated memory is still 230.7MB. Free memory was 207.0MB in the beginning and 205.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 23:00:40,173 INFO L158 Benchmark]: RCFGBuilder took 324.62ms. Allocated memory is still 230.7MB. Free memory was 205.5MB in the beginning and 195.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 23:00:40,173 INFO L158 Benchmark]: IcfgTransformer took 21.16ms. Allocated memory is still 230.7MB. Free memory was 195.0MB in the beginning and 193.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 23:00:40,173 INFO L158 Benchmark]: TraceAbstraction took 25594.41ms. Allocated memory was 230.7MB in the beginning and 276.8MB in the end (delta: 46.1MB). Free memory was 193.3MB in the beginning and 236.3MB in the end (delta: -42.9MB). Peak memory consumption was 148.9MB. Max. memory is 8.0GB. [2022-02-23 23:00:40,174 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 was 154.9MB in the beginning and 154.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 220.70ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 138.7MB in the beginning and 207.0MB in the end (delta: -68.3MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.60ms. Allocated memory is still 230.7MB. Free memory was 207.0MB in the beginning and 205.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 324.62ms. Allocated memory is still 230.7MB. Free memory was 205.5MB in the beginning and 195.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 21.16ms. Allocated memory is still 230.7MB. Free memory was 195.0MB in the beginning and 193.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 25594.41ms. Allocated memory was 230.7MB in the beginning and 276.8MB in the end (delta: 46.1MB). Free memory was 193.3MB in the beginning and 236.3MB in the end (delta: -42.9MB). Peak memory consumption was 148.9MB. 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: 17]: 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, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.5s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 316 mSDsluCounter, 2145 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1640 mSDsCounter, 424 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1327 IncrementalHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 424 mSolverCounterUnsat, 505 mSDtfsCounter, 1327 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1335 GetRequests, 1193 SyntacticMatches, 12 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=9, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 76 PreInvPairs, 100 NumberOfFragments, 707 HoareAnnotationTreeSize, 76 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 3774 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 776 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1333 ConstructedInterpolants, 0 QuantifiedInterpolants, 7037 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1620 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 3367/3483 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 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((d == p * (B % 4294967296) && p == 2) && 1 <= B % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && q == 0) && B % 4294967296 <= r) && 0 < (-1 * r + 1) / 4294967296 + 1) || ((((((d == p * (B % 4294967296) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-02-23 23:00:40,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...