/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/lcm1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 03:34:43,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 03:34:43,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 03:34:43,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 03:34:43,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 03:34:43,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 03:34:43,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 03:34:43,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 03:34:43,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 03:34:43,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 03:34:43,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 03:34:43,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 03:34:43,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 03:34:43,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 03:34:43,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 03:34:43,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 03:34:43,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 03:34:43,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 03:34:43,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 03:34:43,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 03:34:43,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 03:34:43,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-31 03:34:43,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 03:34:43,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 03:34:43,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 03:34:43,337 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 03:34:43,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 03:34:43,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 03:34:43,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 03:34:43,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 03:34:43,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 03:34:43,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 03:34:43,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 03:34:43,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 03:34:43,364 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 03:34:43,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 03:34:43,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 03:34:43,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 03:34:43,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 03:34:43,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 03:34:43,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 03:34:43,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 03:34:43,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 03:34:43,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 03:34:43,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 03:34:43,366 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 03:34:43,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 03:34:43,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 03:34:43,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 03:34:43,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 03:34:43,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 03:34:43,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 03:34:43,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 03:34:43,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 03:34:43,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 03:34:43,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 03:34:43,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 03:34:43,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 03:34:43,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 03:34:43,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 03:34:43,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 03:34:43,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 03:34:43,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 03:34:43,601 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 03:34:43,601 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 03:34:43,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm1.c [2022-01-31 03:34:43,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede881043/05b822017d784fbf8c2bf2cc94f2b5d1/FLAGd39646713 [2022-01-31 03:34:44,029 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 03:34:44,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c [2022-01-31 03:34:44,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede881043/05b822017d784fbf8c2bf2cc94f2b5d1/FLAGd39646713 [2022-01-31 03:34:44,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede881043/05b822017d784fbf8c2bf2cc94f2b5d1 [2022-01-31 03:34:44,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 03:34:44,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 03:34:44,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 03:34:44,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 03:34:44,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 03:34:44,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcff15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44, skipping insertion in model container [2022-01-31 03:34:44,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 03:34:44,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 03:34:44,269 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/lcm1.c[552,565] [2022-01-31 03:34:44,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 03:34:44,291 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 03:34:44,300 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/lcm1.c[552,565] [2022-01-31 03:34:44,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 03:34:44,314 INFO L208 MainTranslator]: Completed translation [2022-01-31 03:34:44,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44 WrapperNode [2022-01-31 03:34:44,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 03:34:44,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 03:34:44,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 03:34:44,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 03:34:44,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 03:34:44,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 03:34:44,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 03:34:44,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 03:34:44,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (1/1) ... [2022-01-31 03:34:44,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 03:34:44,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:34:44,369 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 03:34:44,371 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 03:34:44,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 03:34:44,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 03:34:44,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 03:34:44,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 03:34:44,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 03:34:44,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 03:34:44,404 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 03:34:44,404 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 03:34:44,404 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 03:34:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 03:34:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-01-31 03:34:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 03:34:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 03:34:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 03:34:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 03:34:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 03:34:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 03:34:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 03:34:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 03:34:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 03:34:44,453 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 03:34:44,454 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 03:34:44,621 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 03:34:44,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 03:34:44,626 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 03:34:44,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:34:44 BoogieIcfgContainer [2022-01-31 03:34:44,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 03:34:44,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 03:34:44,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 03:34:44,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 03:34:44,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 03:34:44" (1/3) ... [2022-01-31 03:34:44,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a04dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:34:44, skipping insertion in model container [2022-01-31 03:34:44,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:34:44" (2/3) ... [2022-01-31 03:34:44,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a04dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:34:44, skipping insertion in model container [2022-01-31 03:34:44,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:34:44" (3/3) ... [2022-01-31 03:34:44,647 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1.c [2022-01-31 03:34:44,651 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 03:34:44,651 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 03:34:44,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 03:34:44,702 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 03:34:44,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 03:34:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 03:34:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 03:34:44,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:34:44,718 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 03:34:44,718 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:34:44,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:34:44,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1751682979, now seen corresponding path program 1 times [2022-01-31 03:34:44,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:34:44,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762502571] [2022-01-31 03:34:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:34:44,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:34:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:34:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 03:34:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:34:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 03:34:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:34:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 03:34:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:34:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 03:34:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:34:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 03:34:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:34:44,943 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 03:34:44,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:34:44,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762502571] [2022-01-31 03:34:44,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762502571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:34:44,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:34:44,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 03:34:44,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435846714] [2022-01-31 03:34:44,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:34:44,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 03:34:44,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:34:44,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 03:34:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 03:34:44,970 INFO L87 Difference]: Start difference. First operand has 37 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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 03:34:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:34:45,052 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2022-01-31 03:34:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 03:34:45,056 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 03:34:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:34:45,061 INFO L225 Difference]: With dead ends: 67 [2022-01-31 03:34:45,061 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 03:34:45,063 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 03:34:45,067 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:34:45,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 40 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:34:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 03:34:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-31 03:34:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 03:34:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-01-31 03:34:45,094 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 32 [2022-01-31 03:34:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:34:45,094 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-01-31 03:34:45,094 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 03:34:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-01-31 03:34:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 03:34:45,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:34:45,096 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 03:34:45,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 03:34:45,096 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:34:45,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:34:45,097 INFO L85 PathProgramCache]: Analyzing trace with hash -442223298, now seen corresponding path program 1 times [2022-01-31 03:34:45,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:34:45,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652801244] [2022-01-31 03:34:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:34:45,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:34:45,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:34:45,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096970800] [2022-01-31 03:34:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:34:45,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:34:45,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:34:45,114 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 03:34:45,145 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 03:34:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:34:45,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 03:34:45,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:34:45,333 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 03:34:45,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:34:45,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:34:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652801244] [2022-01-31 03:34:45,334 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:34:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096970800] [2022-01-31 03:34:45,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096970800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:34:45,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:34:45,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 03:34:45,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130184569] [2022-01-31 03:34:45,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:34:45,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:34:45,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:34:45,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:34:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 03:34:45,337 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 03:34:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:34:45,388 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2022-01-31 03:34:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:34:45,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 32 [2022-01-31 03:34:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:34:45,390 INFO L225 Difference]: With dead ends: 49 [2022-01-31 03:34:45,390 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 03:34:45,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:34:45,392 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:34:45,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 128 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:34:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 03:34:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-01-31 03:34:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 03:34:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2022-01-31 03:34:45,402 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 32 [2022-01-31 03:34:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:34:45,402 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2022-01-31 03:34:45,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 03:34:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2022-01-31 03:34:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 03:34:45,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:34:45,404 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] [2022-01-31 03:34:45,423 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 03:34:45,622 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 03:34:45,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:34:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:34:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1300584321, now seen corresponding path program 1 times [2022-01-31 03:34:45,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:34:45,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523988701] [2022-01-31 03:34:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:34:45,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:34:45,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:34:45,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369056019] [2022-01-31 03:34:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:34:45,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:34:45,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:34:45,651 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 03:34:45,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process