/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 04:29:54,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 04:29:54,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 04:29:55,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 04:29:55,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 04:29:55,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 04:29:55,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 04:29:55,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 04:29:55,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 04:29:55,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 04:29:55,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 04:29:55,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 04:29:55,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 04:29:55,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 04:29:55,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 04:29:55,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 04:29:55,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 04:29:55,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 04:29:55,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 04:29:55,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 04:29:55,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 04:29:55,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 04:29:55,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 04:29:55,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 04:29:55,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 04:29:55,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 04:29:55,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 04:29:55,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 04:29:55,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 04:29:55,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 04:29:55,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 04:29:55,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 04:29:55,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 04:29:55,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 04:29:55,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 04:29:55,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 04:29:55,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 04:29:55,075 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 04:29:55,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 04:29:55,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 04:29:55,077 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 04:29:55,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 04:29:55,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 04:29:55,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 04:29:55,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 04:29:55,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 04:29:55,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 04:29:55,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 04:29:55,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 04:29:55,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 04:29:55,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 04:29:55,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 04:29:55,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 04:29:55,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 04:29:55,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 04:29:55,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 04:29:55,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 04:29:55,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 04:29:55,303 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 04:29:55,303 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 04:29:55,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2022-01-31 04:29:55,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc95f336e/6adbcec7d5c3481ab4ca8136e24c6f63/FLAG3a1d90f01 [2022-01-31 04:29:55,765 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 04:29:55,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2022-01-31 04:29:55,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc95f336e/6adbcec7d5c3481ab4ca8136e24c6f63/FLAG3a1d90f01 [2022-01-31 04:29:56,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc95f336e/6adbcec7d5c3481ab4ca8136e24c6f63 [2022-01-31 04:29:56,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 04:29:56,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 04:29:56,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 04:29:56,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 04:29:56,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 04:29:56,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ac3c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56, skipping insertion in model container [2022-01-31 04:29:56,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 04:29:56,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 04:29:56,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2022-01-31 04:29:56,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 04:29:56,353 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 04:29:56,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2022-01-31 04:29:56,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 04:29:56,396 INFO L208 MainTranslator]: Completed translation [2022-01-31 04:29:56,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56 WrapperNode [2022-01-31 04:29:56,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 04:29:56,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 04:29:56,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 04:29:56,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 04:29:56,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 04:29:56,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 04:29:56,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 04:29:56,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 04:29:56,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (1/1) ... [2022-01-31 04:29:56,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 04:29:56,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:29:56,460 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) [2022-01-31 04:29:56,477 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 [2022-01-31 04:29:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 04:29:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 04:29:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 04:29:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 04:29:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 04:29:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 04:29:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 04:29:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 04:29:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 04:29:56,536 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 04:29:56,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 04:29:56,646 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 04:29:56,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 04:29:56,651 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 04:29:56,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:29:56 BoogieIcfgContainer [2022-01-31 04:29:56,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 04:29:56,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 04:29:56,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 04:29:56,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 04:29:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:29:56" (1/3) ... [2022-01-31 04:29:56,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270670c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:29:56, skipping insertion in model container [2022-01-31 04:29:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:29:56" (2/3) ... [2022-01-31 04:29:56,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270670c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:29:56, skipping insertion in model container [2022-01-31 04:29:56,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:29:56" (3/3) ... [2022-01-31 04:29:56,659 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2022-01-31 04:29:56,664 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 04:29:56,664 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 04:29:56,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 04:29:56,707 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 [2022-01-31 04:29:56,707 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 04:29:56,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 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) [2022-01-31 04:29:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 04:29:56,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:29:56,742 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:29:56,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:29:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:29:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1950618521, now seen corresponding path program 1 times [2022-01-31 04:29:56,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:29:56,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103248049] [2022-01-31 04:29:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:56,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:29:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:56,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 04:29:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:56,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 04:29:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 04:29:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 04:29:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 04:29:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 04:29:56,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:29:56,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103248049] [2022-01-31 04:29:56,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103248049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 04:29:56,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 04:29:56,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 04:29:56,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662888950] [2022-01-31 04:29:56,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 04:29:57,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 04:29:57,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:29:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 04:29:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 04:29:57,031 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:29:57,141 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2022-01-31 04:29:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 04:29:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2022-01-31 04:29:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:29:57,149 INFO L225 Difference]: With dead ends: 72 [2022-01-31 04:29:57,149 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 04:29:57,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 04:29:57,154 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 04:29:57,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 04:29:57,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 04:29:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-01-31 04:29:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-01-31 04:29:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-01-31 04:29:57,187 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 32 [2022-01-31 04:29:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:29:57,187 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-01-31 04:29:57,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-01-31 04:29:57,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 04:29:57,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:29:57,189 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:29:57,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 04:29:57,189 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:29:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:29:57,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1734391985, now seen corresponding path program 1 times [2022-01-31 04:29:57,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:29:57,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520357969] [2022-01-31 04:29:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:57,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:29:57,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:29:57,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029759864] [2022-01-31 04:29:57,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:57,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:57,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:29:57,224 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) [2022-01-31 04:29:57,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 04:29:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:57,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 04:29:57,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 04:29:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 04:29:57,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 04:29:57,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:29:57,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520357969] [2022-01-31 04:29:57,446 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 04:29:57,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029759864] [2022-01-31 04:29:57,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029759864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 04:29:57,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 04:29:57,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 04:29:57,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267396232] [2022-01-31 04:29:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 04:29:57,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 04:29:57,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:29:57,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 04:29:57,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 04:29:57,452 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:29:57,467 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2022-01-31 04:29:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 04:29:57,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-01-31 04:29:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:29:57,471 INFO L225 Difference]: With dead ends: 44 [2022-01-31 04:29:57,471 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 04:29:57,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 04:29:57,473 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 04:29:57,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 04:29:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 04:29:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-31 04:29:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 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) [2022-01-31 04:29:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-01-31 04:29:57,490 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 33 [2022-01-31 04:29:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:29:57,491 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-01-31 04:29:57,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-01-31 04:29:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 04:29:57,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:29:57,493 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:29:57,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 04:29:57,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:57,708 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:29:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:29:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2066454233, now seen corresponding path program 1 times [2022-01-31 04:29:57,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:29:57,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644014228] [2022-01-31 04:29:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:57,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:29:57,718 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:29:57,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995960120] [2022-01-31 04:29:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:57,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:57,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:29:57,723 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) [2022-01-31 04:29:57,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 04:29:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:57,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 04:29:57,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 04:29:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 04:29:57,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 04:29:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 04:29:58,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:29:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644014228] [2022-01-31 04:29:58,004 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 04:29:58,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995960120] [2022-01-31 04:29:58,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995960120] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 04:29:58,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 04:29:58,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-01-31 04:29:58,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593254243] [2022-01-31 04:29:58,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 04:29:58,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 04:29:58,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:29:58,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 04:29:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-31 04:29:58,006 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:29:58,072 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2022-01-31 04:29:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 04:29:58,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-01-31 04:29:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:29:58,073 INFO L225 Difference]: With dead ends: 53 [2022-01-31 04:29:58,073 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 04:29:58,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-31 04:29:58,075 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 04:29:58,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 160 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 04:29:58,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 04:29:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-01-31 04:29:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2022-01-31 04:29:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-01-31 04:29:58,082 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 34 [2022-01-31 04:29:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:29:58,082 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-01-31 04:29:58,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-01-31 04:29:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 04:29:58,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:29:58,083 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:29:58,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 04:29:58,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 04:29:58,301 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:29:58,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:29:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1678606280, now seen corresponding path program 1 times [2022-01-31 04:29:58,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:29:58,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658731287] [2022-01-31 04:29:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:58,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:29:58,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:29:58,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213511429] [2022-01-31 04:29:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:58,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:58,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:29:58,325 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) [2022-01-31 04:29:58,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 04:29:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:58,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 04:29:58,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 04:29:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 04:29:58,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 04:29:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 04:29:58,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:29:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658731287] [2022-01-31 04:29:58,631 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 04:29:58,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213511429] [2022-01-31 04:29:58,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213511429] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 04:29:58,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 04:29:58,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-01-31 04:29:58,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880789111] [2022-01-31 04:29:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 04:29:58,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 04:29:58,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:29:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 04:29:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-31 04:29:58,636 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 04:29:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:29:58,678 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-01-31 04:29:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 04:29:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2022-01-31 04:29:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:29:58,680 INFO L225 Difference]: With dead ends: 43 [2022-01-31 04:29:58,680 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 04:29:58,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-31 04:29:58,681 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 04:29:58,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 140 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 04:29:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 04:29:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 04:29:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-01-31 04:29:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-01-31 04:29:58,687 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2022-01-31 04:29:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:29:58,687 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-01-31 04:29:58,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-31 04:29:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-01-31 04:29:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 04:29:58,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:29:58,688 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:29:58,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 04:29:58,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:58,906 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:29:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:29:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2124209112, now seen corresponding path program 1 times [2022-01-31 04:29:58,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:29:58,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320228817] [2022-01-31 04:29:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:58,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:29:58,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:29:58,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033904356] [2022-01-31 04:29:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:58,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:58,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:29:58,917 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) [2022-01-31 04:29:58,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 04:29:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:58,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 04:29:58,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 04:29:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 04:29:59,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 04:29:59,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:29:59,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320228817] [2022-01-31 04:29:59,038 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 04:29:59,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033904356] [2022-01-31 04:29:59,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033904356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 04:29:59,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 04:29:59,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 04:29:59,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408968644] [2022-01-31 04:29:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 04:29:59,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 04:29:59,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:29:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 04:29:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 04:29:59,040 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:59,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:29:59,064 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2022-01-31 04:29:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 04:29:59,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-01-31 04:29:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:29:59,067 INFO L225 Difference]: With dead ends: 66 [2022-01-31 04:29:59,067 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 04:29:59,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 04:29:59,068 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 04:29:59,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 04:29:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 04:29:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-31 04:29:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 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) [2022-01-31 04:29:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-01-31 04:29:59,075 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 39 [2022-01-31 04:29:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:29:59,075 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-01-31 04:29:59,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 04:29:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-01-31 04:29:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 04:29:59,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:29:59,076 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:29:59,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 04:29:59,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:59,277 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:29:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:29:59,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1052701339, now seen corresponding path program 1 times [2022-01-31 04:29:59,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:29:59,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859717346] [2022-01-31 04:29:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:59,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:29:59,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:29:59,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523006295] [2022-01-31 04:29:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:59,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:29:59,288 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) [2022-01-31 04:29:59,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 04:29:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:59,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 04:29:59,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 04:29:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 04:29:59,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 04:29:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 04:29:59,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:29:59,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859717346] [2022-01-31 04:29:59,577 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 04:29:59,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523006295] [2022-01-31 04:29:59,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523006295] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 04:29:59,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 04:29:59,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-01-31 04:29:59,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908000932] [2022-01-31 04:29:59,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 04:29:59,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 04:29:59,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:29:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 04:29:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-31 04:29:59,579 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 04:29:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:29:59,619 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-01-31 04:29:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 04:29:59,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-01-31 04:29:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:29:59,621 INFO L225 Difference]: With dead ends: 57 [2022-01-31 04:29:59,621 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 04:29:59,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-31 04:29:59,623 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 04:29:59,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 04:29:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 04:29:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2022-01-31 04:29:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 04:29:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-01-31 04:29:59,642 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 41 [2022-01-31 04:29:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:29:59,643 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-01-31 04:29:59,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 04:29:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-01-31 04:29:59,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 04:29:59,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:29:59,644 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:29:59,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 04:29:59,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:59,868 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:29:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:29:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1531994984, now seen corresponding path program 1 times [2022-01-31 04:29:59,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:29:59,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630104199] [2022-01-31 04:29:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:59,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:29:59,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:29:59,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918926842] [2022-01-31 04:29:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:29:59,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:29:59,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:29:59,878 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) [2022-01-31 04:29:59,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 04:29:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:29:59,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 04:29:59,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 04:30:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 04:30:00,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 04:30:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 04:30:00,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:30:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630104199] [2022-01-31 04:30:00,177 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 04:30:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918926842] [2022-01-31 04:30:00,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918926842] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 04:30:00,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 04:30:00,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-01-31 04:30:00,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345048614] [2022-01-31 04:30:00,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 04:30:00,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 04:30:00,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:30:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 04:30:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-31 04:30:00,179 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-01-31 04:30:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:30:00,218 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-01-31 04:30:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 04:30:00,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 46 [2022-01-31 04:30:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:30:00,219 INFO L225 Difference]: With dead ends: 61 [2022-01-31 04:30:00,219 INFO L226 Difference]: Without dead ends: 59 [2022-01-31 04:30:00,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-31 04:30:00,220 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 04:30:00,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 04:30:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-31 04:30:00,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-01-31 04:30:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 04:30:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-01-31 04:30:00,227 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 46 [2022-01-31 04:30:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:30:00,227 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-01-31 04:30:00,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-01-31 04:30:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-01-31 04:30:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 04:30:00,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:30:00,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:30:00,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 04:30:00,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:30:00,454 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:30:00,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:30:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash -300711301, now seen corresponding path program 1 times [2022-01-31 04:30:00,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:30:00,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199401779] [2022-01-31 04:30:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:30:00,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:30:00,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:30:00,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068265514] [2022-01-31 04:30:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:30:00,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:30:00,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:30:00,467 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) [2022-01-31 04:30:00,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 04:30:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 04:30:00,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-31 04:30:00,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 04:30:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-31 04:30:00,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 04:30:00,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 04:30:00,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199401779] [2022-01-31 04:30:00,842 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 04:30:00,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068265514] [2022-01-31 04:30:00,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068265514] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 04:30:00,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 04:30:00,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-01-31 04:30:00,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651495556] [2022-01-31 04:30:00,842 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 04:30:00,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 04:30:00,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 04:30:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 04:30:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-31 04:30:00,843 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 04:30:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 04:30:00,985 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2022-01-31 04:30:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 04:30:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-01-31 04:30:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 04:30:00,987 INFO L225 Difference]: With dead ends: 65 [2022-01-31 04:30:00,987 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 04:30:00,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-01-31 04:30:00,988 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 04:30:00,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 189 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 04:30:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 04:30:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-01-31 04:30:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 04:30:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-01-31 04:30:00,994 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 51 [2022-01-31 04:30:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 04:30:00,995 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-01-31 04:30:01,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 04:30:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-01-31 04:30:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 04:30:01,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 04:30:01,004 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:30:01,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 04:30:01,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:30:01,220 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 04:30:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 04:30:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 35160305, now seen corresponding path program 1 times [2022-01-31 04:30:01,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 04:30:01,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395044035] [2022-01-31 04:30:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:30:01,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 04:30:01,229 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 04:30:01,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230856674] [2022-01-31 04:30:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 04:30:01,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 04:30:01,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 04:30:01,231 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) [2022-01-31 04:30:01,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 04:30:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 04:30:01,274 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 04:30:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 04:30:01,316 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 04:30:01,316 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 04:30:01,317 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 04:30:01,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 04:30:01,527 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,SelfDestructingSolverStorable8 [2022-01-31 04:30:01,530 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 04:30:01,532 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 04:30:01,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:30:01 BoogieIcfgContainer [2022-01-31 04:30:01,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 04:30:01,564 INFO L158 Benchmark]: Toolchain (without parser) took 5375.74ms. Allocated memory was 187.7MB in the beginning and 229.6MB in the end (delta: 41.9MB). Free memory was 136.8MB in the beginning and 163.0MB in the end (delta: -26.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-01-31 04:30:01,564 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory was 153.1MB in the beginning and 153.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 04:30:01,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.47ms. Allocated memory is still 187.7MB. Free memory was 136.5MB in the beginning and 163.1MB in the end (delta: -26.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 04:30:01,564 INFO L158 Benchmark]: Boogie Preprocessor took 36.11ms. Allocated memory is still 187.7MB. Free memory was 163.1MB in the beginning and 161.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 04:30:01,564 INFO L158 Benchmark]: RCFGBuilder took 218.87ms. Allocated memory is still 187.7MB. Free memory was 161.5MB in the beginning and 150.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 04:30:01,565 INFO L158 Benchmark]: TraceAbstraction took 4909.39ms. Allocated memory was 187.7MB in the beginning and 229.6MB in the end (delta: 41.9MB). Free memory was 149.5MB in the beginning and 163.0MB in the end (delta: -13.6MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-01-31 04:30:01,566 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 187.7MB. Free memory was 153.1MB in the beginning and 153.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.47ms. Allocated memory is still 187.7MB. Free memory was 136.5MB in the beginning and 163.1MB in the end (delta: -26.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.11ms. Allocated memory is still 187.7MB. Free memory was 163.1MB in the beginning and 161.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 218.87ms. Allocated memory is still 187.7MB. Free memory was 161.5MB in the beginning and 150.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4909.39ms. Allocated memory was 187.7MB in the beginning and 229.6MB in the end (delta: 41.9MB). Free memory was 149.5MB in the beginning and 163.0MB in the end (delta: -13.6MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=5, counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=1, y=2] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=1, y=2] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [\old(counter)=0, a=1, b=2, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [\old(counter)=0, a=1, b=2, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [\old(counter)=0, a=1, b=2, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L40] EXPR counter++ VAL [\old(counter)=0, a=1, b=2, c=0, counter=1, counter++=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L40] COND TRUE counter++<2 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=1, b=2, c=1, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L46] EXPR counter++ VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L46] COND TRUE counter++<2 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=1, b=2, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=2, y=2, yy=4] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=2, b=1, c=1, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, xy=2, y=2, yy=4] [L40] EXPR counter++ VAL [\old(counter)=0, a=2, b=1, c=1, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=1, xy=2, y=2, yy=4] [L40] COND FALSE !(counter++<2) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 1110 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 781 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 381 IncrementalHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 329 mSDtfsCounter, 381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 403 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=8, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 372 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1000 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 287/328 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-31 04:30:01,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...