/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 03:28:07,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 03:28:07,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 03:28:07,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 03:28:07,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 03:28:07,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 03:28:07,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 03:28:07,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 03:28:07,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 03:28:07,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 03:28:07,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 03:28:07,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 03:28:07,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 03:28:07,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 03:28:07,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 03:28:07,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 03:28:07,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 03:28:07,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 03:28:07,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 03:28:07,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 03:28:07,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 03:28:07,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 03:28:07,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 03:28:07,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 03:28:07,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 03:28:07,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 03:28:07,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 03:28:07,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 03:28:07,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 03:28:07,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 03:28:07,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 03:28:07,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 03:28:07,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 03:28:07,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 03:28:07,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 03:28:07,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 03:28:07,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 03:28:07,605 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 03:28:07,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 03:28:07,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 03:28:07,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 03:28:07,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 03:28:07,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 03:28:07,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 03:28:07,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 03:28:07,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:28:07,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 03:28:07,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 03:28:07,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 03:28:07,607 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 03:28:07,607 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 03:28:07,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 03:28:07,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 03:28:07,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 03:28:07,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 03:28:07,608 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 03:28:07,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 03:28:07,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 03:28:07,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 03:28:07,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 03:28:07,811 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 03:28:07,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound50.c [2022-01-10 03:28:07,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f830ab1e8/7606d2fb29bb405eaac8bfbb15a2ac21/FLAG208839e31 [2022-01-10 03:28:08,171 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 03:28:08,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound50.c [2022-01-10 03:28:08,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f830ab1e8/7606d2fb29bb405eaac8bfbb15a2ac21/FLAG208839e31 [2022-01-10 03:28:08,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f830ab1e8/7606d2fb29bb405eaac8bfbb15a2ac21 [2022-01-10 03:28:08,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 03:28:08,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 03:28:08,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 03:28:08,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 03:28:08,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 03:28:08,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dd93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08, skipping insertion in model container [2022-01-10 03:28:08,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 03:28:08,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 03:28:08,766 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/prodbin-ll_valuebound50.c[537,550] [2022-01-10 03:28:08,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:28:08,787 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 03:28:08,800 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/prodbin-ll_valuebound50.c[537,550] [2022-01-10 03:28:08,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:28:08,829 INFO L208 MainTranslator]: Completed translation [2022-01-10 03:28:08,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08 WrapperNode [2022-01-10 03:28:08,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 03:28:08,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 03:28:08,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 03:28:08,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 03:28:08,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,854 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2022-01-10 03:28:08,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 03:28:08,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 03:28:08,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 03:28:08,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 03:28:08,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 03:28:08,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 03:28:08,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 03:28:08,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 03:28:08,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (1/1) ... [2022-01-10 03:28:08,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:28:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 03:28:08,927 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) [2022-01-10 03:28:08,932 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 [2022-01-10 03:28:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 03:28:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 03:28:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 03:28:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 03:28:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 03:28:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 03:28:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 03:28:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 03:28:09,012 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 03:28:09,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 03:28:09,238 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 03:28:09,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 03:28:09,242 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 03:28:09,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:28:09 BoogieIcfgContainer [2022-01-10 03:28:09,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 03:28:09,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 03:28:09,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 03:28:09,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 03:28:09,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:28:08" (1/3) ... [2022-01-10 03:28:09,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a1a529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:28:09, skipping insertion in model container [2022-01-10 03:28:09,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:08" (2/3) ... [2022-01-10 03:28:09,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a1a529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:28:09, skipping insertion in model container [2022-01-10 03:28:09,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:28:09" (3/3) ... [2022-01-10 03:28:09,255 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2022-01-10 03:28:09,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 03:28:09,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 03:28:09,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 03:28:09,344 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=PETRI_NET, 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 [2022-01-10 03:28:09,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 03:28:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 03:28:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 03:28:09,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:28:09,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:28:09,366 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:28:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:28:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2022-01-10 03:28:09,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:28:09,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262553160] [2022-01-10 03:28:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:28:09,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:28:09,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:28:09,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:28:09,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 03:28:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:28:09,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 03:28:09,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:28:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:28:09,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:28:09,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:28:09,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262553160] [2022-01-10 03:28:09,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262553160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:28:09,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:28:09,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 03:28:09,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335772] [2022-01-10 03:28:09,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:28:09,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 03:28:09,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:28:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 03:28:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:28:09,614 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 03:28:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:28:09,630 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-01-10 03:28:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 03:28:09,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-01-10 03:28:09,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:28:09,642 INFO L225 Difference]: With dead ends: 51 [2022-01-10 03:28:09,642 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 03:28:09,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:28:09,647 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:28:09,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:28:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 03:28:09,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-10 03:28:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 03:28:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 03:28:09,674 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2022-01-10 03:28:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:28:09,675 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 03:28:09,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 03:28:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 03:28:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 03:28:09,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:28:09,676 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:28:09,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 03:28:09,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:28:09,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:28:09,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:28:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2022-01-10 03:28:09,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:28:09,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754266037] [2022-01-10 03:28:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:28:09,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:28:09,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:28:09,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:28:09,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 03:28:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:28:10,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 03:28:10,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:28:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 03:28:10,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:28:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 03:28:13,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:28:13,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754266037] [2022-01-10 03:28:13,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754266037] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 03:28:13,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 03:28:13,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-01-10 03:28:13,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795965215] [2022-01-10 03:28:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:28:13,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 03:28:13,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:28:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 03:28:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-10 03:28:13,167 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 03:28:17,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 03:28:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:28:19,113 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-01-10 03:28:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:28:19,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-01-10 03:28:19,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:28:19,129 INFO L225 Difference]: With dead ends: 35 [2022-01-10 03:28:19,129 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 03:28:19,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 03:28:19,130 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 03:28:19,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 03:28:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 03:28:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-01-10 03:28:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 03:28:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-10 03:28:19,135 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2022-01-10 03:28:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:28:19,136 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-10 03:28:19,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 03:28:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-10 03:28:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 03:28:19,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:28:19,137 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] [2022-01-10 03:28:19,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 03:28:19,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:28:19,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:28:19,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:28:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times [2022-01-10 03:28:19,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:28:19,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880687304] [2022-01-10 03:28:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:28:19,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:28:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:28:19,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:28:19,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 03:28:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:28:19,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 03:28:19,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:28:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 03:28:19,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:28:19,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:28:19,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880687304] [2022-01-10 03:28:19,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880687304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:28:19,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:28:19,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 03:28:19,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067640600] [2022-01-10 03:28:19,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:28:19,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 03:28:19,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:28:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 03:28:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 03:28:19,743 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 03:28:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:28:19,825 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-01-10 03:28:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 03:28:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2022-01-10 03:28:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:28:19,826 INFO L225 Difference]: With dead ends: 37 [2022-01-10 03:28:19,826 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 03:28:19,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 03:28:19,827 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:28:19,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 91 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-01-10 03:28:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 03:28:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-10 03:28:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 03:28:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-10 03:28:19,833 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2022-01-10 03:28:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:28:19,833 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-10 03:28:19,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 03:28:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-10 03:28:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 03:28:19,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:28:19,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:28:19,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 03:28:20,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:28:20,037 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:28:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:28:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2022-01-10 03:28:20,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:28:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946663444] [2022-01-10 03:28:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:28:20,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:28:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:28:20,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:28:20,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 03:28:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:28:20,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 03:28:20,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:28:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 03:28:31,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:29:16,733 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 32) |c_ULTIMATE.start_main_~b~0#1|))) (or (let ((.cse0 ((_ sign_extend 32) |c_ULTIMATE.start_main_~a~0#1|))) (= (bvmul .cse0 .cse1) (bvadd .cse0 (bvmul (bvsdiv (bvadd (_ bv18446744073709551615 64) .cse1) (_ bv2 64)) (bvmul .cse0 (_ bv2 64)))))) (not (= (bvsrem .cse1 (_ bv2 64)) (_ bv1 64))))) is different from true