/usr/bin/java -ea -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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 03:11:50,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 03:11:50,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 03:11:50,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 03:11:50,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 03:11:50,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 03:11:50,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 03:11:50,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 03:11:50,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 03:11:50,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 03:11:50,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 03:11:50,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 03:11:50,630 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 03:11:50,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 03:11:50,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 03:11:50,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 03:11:50,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 03:11:50,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 03:11:50,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 03:11:50,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 03:11:50,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 03:11:50,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 03:11:50,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 03:11:50,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 03:11:50,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 03:11:50,662 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 03:11:50,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 03:11:50,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 03:11:50,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 03:11:50,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 03:11:50,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 03:11:50,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 03:11:50,663 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 03:11:50,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 03:11:50,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 03:11:50,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 03:11:50,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 03:11:50,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 03:11:50,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 03:11:50,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 03:11:50,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:11:50,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 03:11:50,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 03:11:50,665 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 03:11:50,665 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 03:11:50,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 03:11:50,665 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 03:11:50,665 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 03:11:50,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 03:11:50,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 03:11:50,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 03:11:50,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 03:11:50,903 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 03:11:50,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2022-04-28 03:11:50,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607efcb4d/f042e59817df4972bfb4fa63ffc9d92d/FLAG45003b1cd [2022-04-28 03:11:51,307 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 03:11:51,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2022-04-28 03:11:51,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607efcb4d/f042e59817df4972bfb4fa63ffc9d92d/FLAG45003b1cd [2022-04-28 03:11:51,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607efcb4d/f042e59817df4972bfb4fa63ffc9d92d [2022-04-28 03:11:51,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 03:11:51,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 03:11:51,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 03:11:51,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 03:11:51,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 03:11:51,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@901e122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51, skipping insertion in model container [2022-04-28 03:11:51,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 03:11:51,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 03:11:51,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i[895,908] [2022-04-28 03:11:51,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:11:51,921 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 03:11:51,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i[895,908] [2022-04-28 03:11:51,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:11:51,945 INFO L208 MainTranslator]: Completed translation [2022-04-28 03:11:51,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51 WrapperNode [2022-04-28 03:11:51,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 03:11:51,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 03:11:51,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 03:11:51,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 03:11:51,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 03:11:51,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 03:11:51,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 03:11:51,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 03:11:51,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (1/1) ... [2022-04-28 03:11:51,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:11:51,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:11:52,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-28 03:11:52,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-28 03:11:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 03:11:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 03:11:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 03:11:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 03:11:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 03:11:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 03:11:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 03:11:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 03:11:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 03:11:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 03:11:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 03:11:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 03:11:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 03:11:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 03:11:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 03:11:52,096 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 03:11:52,097 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 03:11:52,181 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 03:11:52,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 03:11:52,187 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 03:11:52,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:11:52 BoogieIcfgContainer [2022-04-28 03:11:52,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 03:11:52,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 03:11:52,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 03:11:52,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 03:11:52,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:11:51" (1/3) ... [2022-04-28 03:11:52,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d53b716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:11:52, skipping insertion in model container [2022-04-28 03:11:52,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:11:51" (2/3) ... [2022-04-28 03:11:52,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d53b716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:11:52, skipping insertion in model container [2022-04-28 03:11:52,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:11:52" (3/3) ... [2022-04-28 03:11:52,208 INFO L111 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2022-04-28 03:11:52,235 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 03:11:52,235 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 03:11:52,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 03:11:52,287 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b70db72, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@568ea930 [2022-04-28 03:11:52,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 03:11:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 03:11:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 03:11:52,302 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:11:52,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:11:52,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:11:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:11:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1411659294, now seen corresponding path program 1 times [2022-04-28 03:11:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:11:52,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1476017702] [2022-04-28 03:11:52,327 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 03:11:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1411659294, now seen corresponding path program 2 times [2022-04-28 03:11:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:11:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596763746] [2022-04-28 03:11:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:11:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:11:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:11:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:11:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:11:52,453 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {24#true} is VALID [2022-04-28 03:11:52,453 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-28 03:11:52,453 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #57#return; {24#true} is VALID [2022-04-28 03:11:52,455 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:11:52,455 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {24#true} is VALID [2022-04-28 03:11:52,456 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-28 03:11:52,456 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #57#return; {24#true} is VALID [2022-04-28 03:11:52,456 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret3 := main(); {24#true} is VALID [2022-04-28 03:11:52,456 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} ~x~0 := 1;~y~0 := 0; {24#true} is VALID [2022-04-28 03:11:52,457 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} assume !true; {25#false} is VALID [2022-04-28 03:11:52,457 INFO L272 TraceCheckUtils]: 7: Hoare triple {25#false} call __VERIFIER_assert((if ~x~0 >= ~y~0 then 1 else 0)); {25#false} is VALID [2022-04-28 03:11:52,458 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-28 03:11:52,458 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-28 03:11:52,458 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-28 03:11:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:11:52,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:11:52,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596763746] [2022-04-28 03:11:52,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596763746] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:11:52,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:11:52,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 03:11:52,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:11:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1476017702] [2022-04-28 03:11:52,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1476017702] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:11:52,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:11:52,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 03:11:52,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124201067] [2022-04-28 03:11:52,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:11:52,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:11:52,469 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:11:52,472 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,501 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:11:52,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 03:11:52,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:11:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 03:11:52,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 03:11:52,532 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:11:52,629 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-28 03:11:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 03:11:52,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:11:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:11:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-28 03:11:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-28 03:11:52,641 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 37 transitions. [2022-04-28 03:11:52,701 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:11:52,706 INFO L225 Difference]: With dead ends: 33 [2022-04-28 03:11:52,707 INFO L226 Difference]: Without dead ends: 14 [2022-04-28 03:11:52,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 03:11:52,711 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:11:52,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:11:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-28 03:11:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-28 03:11:52,737 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:11:52,738 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,738 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,739 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:11:52,741 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-28 03:11:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-28 03:11:52,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:11:52,742 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:11:52,742 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-28 03:11:52,743 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-28 03:11:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:11:52,748 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-28 03:11:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-28 03:11:52,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:11:52,749 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:11:52,749 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:11:52,749 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:11:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-28 03:11:52,755 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-28 03:11:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:11:52,756 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-28 03:11:52,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:52,757 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 15 transitions. [2022-04-28 03:11:52,779 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:11:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-28 03:11:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-28 03:11:52,780 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:11:52,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:11:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 03:11:52,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:11:52,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:11:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1052240059, now seen corresponding path program 1 times [2022-04-28 03:11:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:11:52,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1392147306] [2022-04-28 03:11:52,783 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 03:11:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1052240059, now seen corresponding path program 2 times [2022-04-28 03:11:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:11:52,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798679655] [2022-04-28 03:11:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:11:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:11:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:11:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:11:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:11:52,972 INFO L290 TraceCheckUtils]: 0: Hoare triple {162#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {154#true} is VALID [2022-04-28 03:11:52,972 INFO L290 TraceCheckUtils]: 1: Hoare triple {154#true} assume true; {154#true} is VALID [2022-04-28 03:11:52,972 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {154#true} {154#true} #57#return; {154#true} is VALID [2022-04-28 03:11:52,973 INFO L272 TraceCheckUtils]: 0: Hoare triple {154#true} call ULTIMATE.init(); {162#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:11:52,973 INFO L290 TraceCheckUtils]: 1: Hoare triple {162#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {154#true} is VALID [2022-04-28 03:11:52,974 INFO L290 TraceCheckUtils]: 2: Hoare triple {154#true} assume true; {154#true} is VALID [2022-04-28 03:11:52,974 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {154#true} {154#true} #57#return; {154#true} is VALID [2022-04-28 03:11:52,974 INFO L272 TraceCheckUtils]: 4: Hoare triple {154#true} call #t~ret3 := main(); {154#true} is VALID [2022-04-28 03:11:52,976 INFO L290 TraceCheckUtils]: 5: Hoare triple {154#true} ~x~0 := 1;~y~0 := 0; {159#(<= main_~y~0 main_~x~0)} is VALID [2022-04-28 03:11:52,976 INFO L290 TraceCheckUtils]: 6: Hoare triple {159#(<= main_~y~0 main_~x~0)} #t~short2 := ~y~0 < 1000; {159#(<= main_~y~0 main_~x~0)} is VALID [2022-04-28 03:11:52,977 INFO L290 TraceCheckUtils]: 7: Hoare triple {159#(<= main_~y~0 main_~x~0)} assume #t~short2;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;#t~short2 := 0 != #t~nondet1; {159#(<= main_~y~0 main_~x~0)} is VALID [2022-04-28 03:11:52,977 INFO L290 TraceCheckUtils]: 8: Hoare triple {159#(<= main_~y~0 main_~x~0)} assume !#t~short2;havoc #t~nondet1;havoc #t~short2; {159#(<= main_~y~0 main_~x~0)} is VALID [2022-04-28 03:11:52,978 INFO L272 TraceCheckUtils]: 9: Hoare triple {159#(<= main_~y~0 main_~x~0)} call __VERIFIER_assert((if ~x~0 >= ~y~0 then 1 else 0)); {160#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 03:11:52,979 INFO L290 TraceCheckUtils]: 10: Hoare triple {160#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {161#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 03:11:53,009 INFO L290 TraceCheckUtils]: 11: Hoare triple {161#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {155#false} is VALID [2022-04-28 03:11:53,009 INFO L290 TraceCheckUtils]: 12: Hoare triple {155#false} assume !false; {155#false} is VALID [2022-04-28 03:11:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:11:53,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:11:53,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798679655] [2022-04-28 03:11:53,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798679655] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:11:53,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:11:53,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 03:11:53,010 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:11:53,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1392147306] [2022-04-28 03:11:53,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1392147306] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:11:53,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:11:53,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 03:11:53,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763628547] [2022-04-28 03:11:53,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:11:53,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 03:11:53,012 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:11:53,012 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,028 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:11:53,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 03:11:53,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:11:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 03:11:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-28 03:11:53,029 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:11:53,194 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-04-28 03:11:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 03:11:53,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 03:11:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:11:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-04-28 03:11:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-04-28 03:11:53,202 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 24 transitions. [2022-04-28 03:11:53,225 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:11:53,227 INFO L225 Difference]: With dead ends: 22 [2022-04-28 03:11:53,228 INFO L226 Difference]: Without dead ends: 17 [2022-04-28 03:11:53,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-28 03:11:53,232 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:11:53,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:11:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-28 03:11:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-28 03:11:53,244 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:11:53,245 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,247 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,248 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:11:53,250 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-28 03:11:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-28 03:11:53,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:11:53,251 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:11:53,252 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-28 03:11:53,252 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-28 03:11:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:11:53,255 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-28 03:11:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-28 03:11:53,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:11:53,255 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:11:53,255 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:11:53,255 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:11:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-28 03:11:53,256 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2022-04-28 03:11:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:11:53,257 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-28 03:11:53,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:11:53,257 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 19 transitions. [2022-04-28 03:11:53,275 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:11:53,275 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-28 03:11:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-28 03:11:53,276 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:11:53,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:11:53,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 03:11:53,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:11:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:11:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1104509419, now seen corresponding path program 1 times [2022-04-28 03:11:53,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:11:53,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1612628164] [2022-04-28 03:11:54,627 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-28 03:11:54,628 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1603) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:401) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.PredicateHelper.makeReflexive(PredicateHelper.java:222) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:253) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:195) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-28 03:11:54,632 INFO L158 Benchmark]: Toolchain (without parser) took 2882.05ms. Allocated memory is still 172.0MB. Free memory was 123.4MB in the beginning and 58.7MB in the end (delta: 64.7MB). Peak memory consumption was 65.4MB. Max. memory is 8.0GB. [2022-04-28 03:11:54,632 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 03:11:54,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.91ms. Allocated memory is still 172.0MB. Free memory was 123.2MB in the beginning and 150.6MB in the end (delta: -27.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-28 03:11:54,633 INFO L158 Benchmark]: Boogie Preprocessor took 27.63ms. Allocated memory is still 172.0MB. Free memory was 150.6MB in the beginning and 149.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 03:11:54,633 INFO L158 Benchmark]: RCFGBuilder took 213.67ms. Allocated memory is still 172.0MB. Free memory was 149.0MB in the beginning and 138.9MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-28 03:11:54,633 INFO L158 Benchmark]: TraceAbstraction took 2440.95ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 58.7MB in the end (delta: 79.4MB). Peak memory consumption was 80.2MB. Max. memory is 8.0GB. [2022-04-28 03:11:54,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.91ms. Allocated memory is still 172.0MB. Free memory was 123.2MB in the beginning and 150.6MB in the end (delta: -27.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.63ms. Allocated memory is still 172.0MB. Free memory was 150.6MB in the beginning and 149.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 213.67ms. Allocated memory is still 172.0MB. Free memory was 149.0MB in the beginning and 138.9MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2440.95ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 58.7MB in the end (delta: 79.4MB). Peak memory consumption was 80.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.logic.Theory.term(Theory.java:1603) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-28 03:11:54,649 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...