/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-invariants/mod4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 04:06:26,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 04:06:26,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 04:06:26,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 04:06:26,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 04:06:26,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 04:06:26,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 04:06:26,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 04:06:26,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 04:06:26,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 04:06:26,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 04:06:26,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 04:06:26,370 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 04:06:26,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 04:06:26,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 04:06:26,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 04:06:26,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 04:06:26,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 04:06:26,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 04:06:26,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 04:06:26,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 04:06:26,398 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 04:06:26,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 04:06:26,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 04:06:26,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 04:06:26,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 04:06:26,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 04:06:26,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 04:06:26,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 04:06:26,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 04:06:26,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 04:06:26,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 04:06:26,414 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 04:06:26,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 04:06:26,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 04:06:26,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 04:06:26,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 04:06:26,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 04:06:26,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 04:06:26,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 04:06:26,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 04:06:26,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 04:06:26,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 04:06:26,415 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 04:06:26,415 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 04:06:26,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 04:06:26,415 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 04:06:26,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 04:06:26,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 04:06:26,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 04:06:26,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 04:06:26,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 04:06:26,665 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 04:06:26,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4.c [2022-04-28 04:06:26,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4be2f922d/c0ad1791a92d4d18984a11a41b3417d6/FLAGab8569fc0 [2022-04-28 04:06:27,087 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 04:06:27,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c [2022-04-28 04:06:27,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4be2f922d/c0ad1791a92d4d18984a11a41b3417d6/FLAGab8569fc0 [2022-04-28 04:06:27,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4be2f922d/c0ad1791a92d4d18984a11a41b3417d6 [2022-04-28 04:06:27,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 04:06:27,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 04:06:27,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 04:06:27,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 04:06:27,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 04:06:27,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313ddb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27, skipping insertion in model container [2022-04-28 04:06:27,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 04:06:27,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 04:06:27,280 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-invariants/mod4.c[351,364] [2022-04-28 04:06:27,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 04:06:27,298 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 04:06:27,309 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-invariants/mod4.c[351,364] [2022-04-28 04:06:27,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 04:06:27,320 INFO L208 MainTranslator]: Completed translation [2022-04-28 04:06:27,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27 WrapperNode [2022-04-28 04:06:27,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 04:06:27,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 04:06:27,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 04:06:27,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 04:06:27,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 04:06:27,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 04:06:27,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 04:06:27,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 04:06:27,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (1/1) ... [2022-04-28 04:06:27,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 04:06:27,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 04:06:27,375 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 04:06:27,379 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 04:06:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 04:06:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 04:06:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 04:06:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 04:06:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 04:06:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 04:06:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 04:06:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 04:06:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 04:06:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 04:06:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 04:06:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 04:06:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 04:06:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 04:06:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 04:06:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 04:06:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 04:06:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 04:06:27,462 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 04:06:27,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 04:06:27,536 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 04:06:27,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 04:06:27,543 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 04:06:27,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 04:06:27 BoogieIcfgContainer [2022-04-28 04:06:27,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 04:06:27,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 04:06:27,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 04:06:27,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 04:06:27,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 04:06:27" (1/3) ... [2022-04-28 04:06:27,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7605bee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 04:06:27, skipping insertion in model container [2022-04-28 04:06:27,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 04:06:27" (2/3) ... [2022-04-28 04:06:27,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7605bee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 04:06:27, skipping insertion in model container [2022-04-28 04:06:27,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 04:06:27" (3/3) ... [2022-04-28 04:06:27,552 INFO L111 eAbstractionObserver]: Analyzing ICFG mod4.c [2022-04-28 04:06:27,564 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 04:06:27,564 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 04:06:27,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 04:06:27,617 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@49910ccf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@582dba56 [2022-04-28 04:06:27,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 04:06:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 04:06:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 04:06:27,630 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 04:06:27,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 04:06:27,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 04:06:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 04:06:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2022-04-28 04:06:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 04:06:27,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1796369425] [2022-04-28 04:06:27,660 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 04:06:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 2 times [2022-04-28 04:06:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 04:06:27,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083429416] [2022-04-28 04:06:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 04:06:27,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 04:06:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 04:06:27,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 04:06:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 04:06:27,888 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#(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(7, 2);call write~init~int(109, 2, 0, 1);call write~init~int(111, 2, 1, 1);call write~init~int(100, 2, 2, 1);call write~init~int(52, 2, 3, 1);call write~init~int(46, 2, 4, 1);call write~init~int(99, 2, 5, 1);call write~init~int(0, 2, 6, 1);call #Ultimate.allocInit(12, 3); {23#true} is VALID [2022-04-28 04:06:27,889 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-28 04:06:27,889 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #38#return; {23#true} is VALID [2022-04-28 04:06:27,907 INFO L272 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 04:06:27,908 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#(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(7, 2);call write~init~int(109, 2, 0, 1);call write~init~int(111, 2, 1, 1);call write~init~int(100, 2, 2, 1);call write~init~int(52, 2, 3, 1);call write~init~int(46, 2, 4, 1);call write~init~int(99, 2, 5, 1);call write~init~int(0, 2, 6, 1);call #Ultimate.allocInit(12, 3); {23#true} is VALID [2022-04-28 04:06:27,908 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-28 04:06:27,908 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #38#return; {23#true} is VALID [2022-04-28 04:06:27,908 INFO L272 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret5 := main(); {23#true} is VALID [2022-04-28 04:06:27,909 INFO L290 TraceCheckUtils]: 5: Hoare triple {23#true} ~x~0 := 0; {23#true} is VALID [2022-04-28 04:06:27,910 INFO L290 TraceCheckUtils]: 6: Hoare triple {23#true} assume !true; {24#false} is VALID [2022-04-28 04:06:27,910 INFO L272 TraceCheckUtils]: 7: Hoare triple {24#false} call __VERIFIER_assert((if 0 == (if ~x~0 % 4294967296 < 0 && 0 != ~x~0 % 4294967296 % 4 then ~x~0 % 4294967296 % 4 - 4 else ~x~0 % 4294967296 % 4) % 4294967296 then 1 else 0)); {24#false} is VALID [2022-04-28 04:06:27,910 INFO L290 TraceCheckUtils]: 8: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2022-04-28 04:06:27,910 INFO L290 TraceCheckUtils]: 9: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2022-04-28 04:06:27,911 INFO L290 TraceCheckUtils]: 10: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-04-28 04:06:27,911 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 04:06:27,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 04:06:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083429416] [2022-04-28 04:06:27,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083429416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 04:06:27,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 04:06:27,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 04:06:27,915 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 04:06:27,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1796369425] [2022-04-28 04:06:27,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1796369425] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 04:06:27,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 04:06:27,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 04:06:27,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474081435] [2022-04-28 04:06:27,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 04:06:27,921 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 04:06:27,928 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 04:06:27,931 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 04:06:27,958 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 04:06:27,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 04:06:27,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 04:06:27,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 04:06:27,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 04:06:27,994 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 04:06:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 04:06:28,099 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-28 04:06:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 04:06:28,099 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 04:06:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 04:06:28,101 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 04:06:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-04-28 04:06:28,109 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 04:06:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-04-28 04:06:28,117 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 35 transitions. [2022-04-28 04:06:28,167 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 04:06:28,174 INFO L225 Difference]: With dead ends: 32 [2022-04-28 04:06:28,175 INFO L226 Difference]: Without dead ends: 13 [2022-04-28 04:06:28,177 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 04:06:28,182 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 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 04:06:28,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 04:06:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-28 04:06:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-28 04:06:28,214 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 04:06:28,215 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 04:06:28,216 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 04:06:28,216 INFO L87 Difference]: Start difference. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 04:06:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 04:06:28,218 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-28 04:06:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-28 04:06:28,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 04:06:28,218 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 04:06:28,218 INFO L74 IsIncluded]: Start isIncluded. First operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 13 states. [2022-04-28 04:06:28,218 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 13 states. [2022-04-28 04:06:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 04:06:28,220 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-28 04:06:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-28 04:06:28,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 04:06:28,221 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 04:06:28,221 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 04:06:28,221 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 04:06:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 04:06:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-28 04:06:28,226 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-28 04:06:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 04:06:28,226 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-28 04:06:28,226 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 04:06:28,226 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 13 states and 13 transitions. [2022-04-28 04:06:28,246 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 04:06:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-28 04:06:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 04:06:28,251 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 04:06:28,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 04:06:28,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 04:06:28,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 04:06:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 04:06:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2022-04-28 04:06:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 04:06:28,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1558084897] [2022-04-28 04:06:28,258 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 04:06:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 2 times [2022-04-28 04:06:28,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 04:06:28,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367238969] [2022-04-28 04:06:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 04:06:28,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 04:06:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 04:06:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 04:06:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 04:06:28,402 INFO L290 TraceCheckUtils]: 0: Hoare triple {155#(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(7, 2);call write~init~int(109, 2, 0, 1);call write~init~int(111, 2, 1, 1);call write~init~int(100, 2, 2, 1);call write~init~int(52, 2, 3, 1);call write~init~int(46, 2, 4, 1);call write~init~int(99, 2, 5, 1);call write~init~int(0, 2, 6, 1);call #Ultimate.allocInit(12, 3); {147#true} is VALID [2022-04-28 04:06:28,402 INFO L290 TraceCheckUtils]: 1: Hoare triple {147#true} assume true; {147#true} is VALID [2022-04-28 04:06:28,403 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {147#true} {147#true} #38#return; {147#true} is VALID [2022-04-28 04:06:28,404 INFO L272 TraceCheckUtils]: 0: Hoare triple {147#true} call ULTIMATE.init(); {155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 04:06:28,405 INFO L290 TraceCheckUtils]: 1: Hoare triple {155#(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(7, 2);call write~init~int(109, 2, 0, 1);call write~init~int(111, 2, 1, 1);call write~init~int(100, 2, 2, 1);call write~init~int(52, 2, 3, 1);call write~init~int(46, 2, 4, 1);call write~init~int(99, 2, 5, 1);call write~init~int(0, 2, 6, 1);call #Ultimate.allocInit(12, 3); {147#true} is VALID [2022-04-28 04:06:28,406 INFO L290 TraceCheckUtils]: 2: Hoare triple {147#true} assume true; {147#true} is VALID [2022-04-28 04:06:28,406 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {147#true} {147#true} #38#return; {147#true} is VALID [2022-04-28 04:06:28,406 INFO L272 TraceCheckUtils]: 4: Hoare triple {147#true} call #t~ret5 := main(); {147#true} is VALID [2022-04-28 04:06:28,407 INFO L290 TraceCheckUtils]: 5: Hoare triple {147#true} ~x~0 := 0; {152#(= main_~x~0 0)} is VALID [2022-04-28 04:06:28,408 INFO L290 TraceCheckUtils]: 6: Hoare triple {152#(= main_~x~0 0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {152#(= main_~x~0 0)} is VALID [2022-04-28 04:06:28,408 INFO L290 TraceCheckUtils]: 7: Hoare triple {152#(= main_~x~0 0)} assume !(0 != #t~nondet4);havoc #t~nondet4; {152#(= main_~x~0 0)} is VALID [2022-04-28 04:06:28,409 INFO L272 TraceCheckUtils]: 8: Hoare triple {152#(= main_~x~0 0)} call __VERIFIER_assert((if 0 == (if ~x~0 % 4294967296 < 0 && 0 != ~x~0 % 4294967296 % 4 then ~x~0 % 4294967296 % 4 - 4 else ~x~0 % 4294967296 % 4) % 4294967296 then 1 else 0)); {153#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 04:06:28,410 INFO L290 TraceCheckUtils]: 9: Hoare triple {153#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {154#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 04:06:28,410 INFO L290 TraceCheckUtils]: 10: Hoare triple {154#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {148#false} is VALID [2022-04-28 04:06:28,411 INFO L290 TraceCheckUtils]: 11: Hoare triple {148#false} assume !false; {148#false} is VALID [2022-04-28 04:06:28,411 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 04:06:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 04:06:28,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367238969] [2022-04-28 04:06:28,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367238969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 04:06:28,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 04:06:28,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 04:06:28,413 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 04:06:28,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1558084897] [2022-04-28 04:06:28,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1558084897] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 04:06:28,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 04:06:28,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 04:06:28,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032482829] [2022-04-28 04:06:28,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 04:06:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-04-28 04:06:28,415 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 04:06:28,415 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 04:06:28,429 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 04:06:28,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 04:06:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 04:06:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 04:06:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-28 04:06:28,431 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 04:06:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 04:06:28,550 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-04-28 04:06:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 04:06:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-04-28 04:06:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 04:06:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 04:06:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2022-04-28 04:06:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 04:06:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2022-04-28 04:06:28,560 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 20 transitions. [2022-04-28 04:06:28,580 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 04:06:28,582 INFO L225 Difference]: With dead ends: 20 [2022-04-28 04:06:28,582 INFO L226 Difference]: Without dead ends: 15 [2022-04-28 04:06:28,583 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 04:06:28,585 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 04:06:28,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 04:06:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-28 04:06:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-28 04:06:28,592 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 04:06:28,593 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 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 04:06:28,594 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 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 04:06:28,594 INFO L87 Difference]: Start difference. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 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 04:06:28,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 04:06:28,595 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-28 04:06:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 04:06:28,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 04:06:28,596 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 04:06:28,597 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 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 15 states. [2022-04-28 04:06:28,597 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 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 15 states. [2022-04-28 04:06:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 04:06:28,598 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-28 04:06:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 04:06:28,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 04:06:28,599 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 04:06:28,599 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 04:06:28,599 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 04:06:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 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 04:06:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-04-28 04:06:28,600 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2022-04-28 04:06:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 04:06:28,600 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-04-28 04:06:28,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 04:06:28,601 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 15 states and 15 transitions. [2022-04-28 04:06:28,615 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 04:06:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 04:06:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-28 04:06:28,615 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 04:06:28,616 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 04:06:28,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 04:06:28,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 04:06:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 04:06:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 615626395, now seen corresponding path program 1 times [2022-04-28 04:06:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 04:06:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1566458419] [2022-04-28 04:06:28,957 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-28 04:06:28,958 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 04:06:28,962 INFO L158 Benchmark]: Toolchain (without parser) took 1857.04ms. Allocated memory was 188.7MB in the beginning and 246.4MB in the end (delta: 57.7MB). Free memory was 133.8MB in the beginning and 128.9MB in the end (delta: 4.9MB). Peak memory consumption was 62.0MB. Max. memory is 8.0GB. [2022-04-28 04:06:28,962 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 150.3MB in the beginning and 150.2MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 04:06:28,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.29ms. Allocated memory was 188.7MB in the beginning and 246.4MB in the end (delta: 57.7MB). Free memory was 133.6MB in the beginning and 216.9MB in the end (delta: -83.3MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-04-28 04:06:28,963 INFO L158 Benchmark]: Boogie Preprocessor took 22.86ms. Allocated memory is still 246.4MB. Free memory was 216.9MB in the beginning and 215.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 04:06:28,964 INFO L158 Benchmark]: RCFGBuilder took 199.74ms. Allocated memory is still 246.4MB. Free memory was 215.4MB in the beginning and 205.4MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-28 04:06:28,970 INFO L158 Benchmark]: TraceAbstraction took 1414.18ms. Allocated memory is still 246.4MB. Free memory was 204.9MB in the beginning and 128.9MB in the end (delta: 76.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2022-04-28 04:06:28,971 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 0.11ms. Allocated memory is still 188.7MB. Free memory was 150.3MB in the beginning and 150.2MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.29ms. Allocated memory was 188.7MB in the beginning and 246.4MB in the end (delta: 57.7MB). Free memory was 133.6MB in the beginning and 216.9MB in the end (delta: -83.3MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.86ms. Allocated memory is still 246.4MB. Free memory was 216.9MB in the beginning and 215.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 199.74ms. Allocated memory is still 246.4MB. Free memory was 215.4MB in the beginning and 205.4MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1414.18ms. Allocated memory is still 246.4MB. Free memory was 204.9MB in the beginning and 128.9MB in the end (delta: 76.0MB). Peak memory consumption was 75.5MB. 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 04:06:29,008 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...