/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 11:59:58,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 11:59:58,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 11:59:58,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 11:59:58,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 11:59:58,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 11:59:58,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 11:59:58,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 11:59:58,782 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 11:59:58,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 11:59:58,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 11:59:58,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 11:59:58,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 11:59:58,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 11:59:58,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 11:59:58,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 11:59:58,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 11:59:58,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 11:59:58,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 11:59:58,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 11:59:58,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 11:59:58,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 11:59:58,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 11:59:58,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 11:59:58,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 11:59:58,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 11:59:58,787 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 11:59:58,787 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 11:59:58,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 11:59:58,787 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 11:59:58,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 11:59:58,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 11:59:59,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 11:59:59,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 11:59:59,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 11:59:59,009 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 11:59:59,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound50.i [2022-04-08 11:59:59,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f94592c8/57c1a1b3a5ec49bda1e540fe166d87e8/FLAGc1a87e657 [2022-04-08 11:59:59,517 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 11:59:59,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound50.i [2022-04-08 11:59:59,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f94592c8/57c1a1b3a5ec49bda1e540fe166d87e8/FLAGc1a87e657 [2022-04-08 11:59:59,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f94592c8/57c1a1b3a5ec49bda1e540fe166d87e8 [2022-04-08 11:59:59,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 11:59:59,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 11:59:59,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 11:59:59,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 11:59:59,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 11:59:59,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 11:59:59" (1/1) ... [2022-04-08 11:59:59,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b62f2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 11:59:59, skipping insertion in model container [2022-04-08 11:59:59,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 11:59:59" (1/1) ... [2022-04-08 11:59:59,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 11:59:59,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 12:00:00,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound50.i[950,963] [2022-04-08 12:00:00,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:00:00,117 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 12:00:00,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound50.i[950,963] [2022-04-08 12:00:00,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:00:00,146 INFO L208 MainTranslator]: Completed translation [2022-04-08 12:00:00,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00 WrapperNode [2022-04-08 12:00:00,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 12:00:00,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 12:00:00,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 12:00:00,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 12:00:00,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 12:00:00,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 12:00:00,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 12:00:00,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 12:00:00,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (1/1) ... [2022-04-08 12:00:00,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:00:00,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:00:00,206 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) [2022-04-08 12:00:00,230 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 [2022-04-08 12:00:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 12:00:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 12:00:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 12:00:00,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 12:00:00,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 12:00:00,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 12:00:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 12:00:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 12:00:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 12:00:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 12:00:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 12:00:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 12:00:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-08 12:00:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 12:00:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 12:00:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 12:00:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 12:00:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 12:00:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 12:00:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 12:00:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 12:00:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 12:00:00,331 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 12:00:00,332 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 12:00:00,541 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 12:00:00,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 12:00:00,547 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-08 12:00:00,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:00:00 BoogieIcfgContainer [2022-04-08 12:00:00,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 12:00:00,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 12:00:00,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 12:00:00,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 12:00:00,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 11:59:59" (1/3) ... [2022-04-08 12:00:00,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15443124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:00:00, skipping insertion in model container [2022-04-08 12:00:00,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:00:00" (2/3) ... [2022-04-08 12:00:00,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15443124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:00:00, skipping insertion in model container [2022-04-08 12:00:00,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:00:00" (3/3) ... [2022-04-08 12:00:00,574 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound50.i [2022-04-08 12:00:00,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 12:00:00,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 12:00:00,619 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 12:00:00,627 INFO L340 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 [2022-04-08 12:00:00,628 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 12:00:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-08 12:00:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-08 12:00:00,657 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:00:00,657 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:00:00,658 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:00:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:00:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash 291922115, now seen corresponding path program 1 times [2022-04-08 12:00:00,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:00:00,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [818530891] [2022-04-08 12:00:00,679 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:00:00,679 INFO L85 PathProgramCache]: Analyzing trace with hash 291922115, now seen corresponding path program 2 times [2022-04-08 12:00:00,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:00:00,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577007546] [2022-04-08 12:00:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:00:00,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:00:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 12:00:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:00,843 INFO L290 TraceCheckUtils]: 0: Hoare triple {58#(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); {37#true} is VALID [2022-04-08 12:00:00,844 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume true; {37#true} is VALID [2022-04-08 12:00:00,844 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {37#true} {37#true} #94#return; {37#true} is VALID [2022-04-08 12:00:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 12:00:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:00,853 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,854 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,854 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,855 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {37#true} #82#return; {38#false} is VALID [2022-04-08 12:00:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-08 12:00:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:00,863 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,864 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,864 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,864 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {38#false} #84#return; {38#false} is VALID [2022-04-08 12:00:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-08 12:00:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:00,872 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,873 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,873 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,874 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {38#false} #86#return; {38#false} is VALID [2022-04-08 12:00:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-08 12:00:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:00,881 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,882 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,882 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,883 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {38#false} #88#return; {38#false} is VALID [2022-04-08 12:00:00,884 INFO L272 TraceCheckUtils]: 0: Hoare triple {37#true} call ULTIMATE.init(); {58#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 12:00:00,884 INFO L290 TraceCheckUtils]: 1: Hoare triple {58#(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); {37#true} is VALID [2022-04-08 12:00:00,884 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#true} assume true; {37#true} is VALID [2022-04-08 12:00:00,885 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#true} {37#true} #94#return; {37#true} is VALID [2022-04-08 12:00:00,885 INFO L272 TraceCheckUtils]: 4: Hoare triple {37#true} call #t~ret3 := main(); {37#true} is VALID [2022-04-08 12:00:00,885 INFO L290 TraceCheckUtils]: 5: Hoare triple {37#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1; {37#true} is VALID [2022-04-08 12:00:00,885 INFO L272 TraceCheckUtils]: 6: Hoare triple {37#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 50 then 1 else 0)); {37#true} is VALID [2022-04-08 12:00:00,885 INFO L290 TraceCheckUtils]: 7: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,886 INFO L290 TraceCheckUtils]: 8: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,886 INFO L290 TraceCheckUtils]: 9: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,887 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {38#false} {37#true} #82#return; {38#false} is VALID [2022-04-08 12:00:00,887 INFO L290 TraceCheckUtils]: 11: Hoare triple {38#false} ~B~0 := #t~nondet2;havoc #t~nondet2; {38#false} is VALID [2022-04-08 12:00:00,887 INFO L272 TraceCheckUtils]: 12: Hoare triple {38#false} call assume_abort_if_not((if ~B~0 % 4294967296 >= 0 && ~B~0 % 4294967296 <= 50 then 1 else 0)); {37#true} is VALID [2022-04-08 12:00:00,887 INFO L290 TraceCheckUtils]: 13: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,888 INFO L290 TraceCheckUtils]: 14: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,888 INFO L290 TraceCheckUtils]: 15: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,888 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {38#false} {38#false} #84#return; {38#false} is VALID [2022-04-08 12:00:00,889 INFO L272 TraceCheckUtils]: 17: Hoare triple {38#false} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {37#true} is VALID [2022-04-08 12:00:00,889 INFO L290 TraceCheckUtils]: 18: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,889 INFO L290 TraceCheckUtils]: 19: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,890 INFO L290 TraceCheckUtils]: 20: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,890 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {38#false} {38#false} #86#return; {38#false} is VALID [2022-04-08 12:00:00,890 INFO L272 TraceCheckUtils]: 22: Hoare triple {38#false} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {37#true} is VALID [2022-04-08 12:00:00,890 INFO L290 TraceCheckUtils]: 23: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-08 12:00:00,891 INFO L290 TraceCheckUtils]: 24: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-08 12:00:00,891 INFO L290 TraceCheckUtils]: 25: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-08 12:00:00,891 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {38#false} {38#false} #88#return; {38#false} is VALID [2022-04-08 12:00:00,892 INFO L290 TraceCheckUtils]: 27: Hoare triple {38#false} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {38#false} is VALID [2022-04-08 12:00:00,892 INFO L290 TraceCheckUtils]: 28: Hoare triple {38#false} assume !true; {38#false} is VALID [2022-04-08 12:00:00,892 INFO L290 TraceCheckUtils]: 29: Hoare triple {38#false} assume !true; {38#false} is VALID [2022-04-08 12:00:00,892 INFO L272 TraceCheckUtils]: 30: Hoare triple {38#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {38#false} is VALID [2022-04-08 12:00:00,893 INFO L290 TraceCheckUtils]: 31: Hoare triple {38#false} ~cond := #in~cond; {38#false} is VALID [2022-04-08 12:00:00,893 INFO L290 TraceCheckUtils]: 32: Hoare triple {38#false} assume 0 == ~cond; {38#false} is VALID [2022-04-08 12:00:00,893 INFO L290 TraceCheckUtils]: 33: Hoare triple {38#false} assume !false; {38#false} is VALID [2022-04-08 12:00:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:00:00,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:00:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577007546] [2022-04-08 12:00:00,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577007546] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:00:00,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:00:00,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:00:00,898 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:00:00,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [818530891] [2022-04-08 12:00:00,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [818530891] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:00:00,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:00:00,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:00:00,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463949005] [2022-04-08 12:00:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:00:00,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-08 12:00:00,910 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:00:00,914 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:00:00,958 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:00,958 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 12:00:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:00:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 12:00:00,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:00:00,980 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:00:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:01,108 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2022-04-08 12:00:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 12:00:01,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-08 12:00:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:00:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:00:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2022-04-08 12:00:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:00:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2022-04-08 12:00:01,134 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 90 transitions. [2022-04-08 12:00:01,248 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 90 edges. 90 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:01,256 INFO L225 Difference]: With dead ends: 61 [2022-04-08 12:00:01,256 INFO L226 Difference]: Without dead ends: 29 [2022-04-08 12:00:01,259 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:00:01,262 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:00:01,263 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:00:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-08 12:00:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-08 12:00:01,290 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:00:01,291 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:00:01,292 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:00:01,292 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:00:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:01,297 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-08 12:00:01,297 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-08 12:00:01,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:00:01,298 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:00:01,298 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 29 states. [2022-04-08 12:00:01,298 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 29 states. [2022-04-08 12:00:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:01,302 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-08 12:00:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-08 12:00:01,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:00:01,303 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:00:01,303 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:00:01,303 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:00:01,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:00:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-04-08 12:00:01,308 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34 [2022-04-08 12:00:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:00:01,308 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-04-08 12:00:01,309 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:00:01,309 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 35 transitions. [2022-04-08 12:00:01,348 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:01,348 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-08 12:00:01,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-08 12:00:01,349 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:00:01,349 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:00:01,350 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 12:00:01,350 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:00:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:00:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash -245963777, now seen corresponding path program 1 times [2022-04-08 12:00:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:00:01,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [264049997] [2022-04-08 12:00:01,352 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:00:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash -245963777, now seen corresponding path program 2 times [2022-04-08 12:00:01,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:00:01,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901551286] [2022-04-08 12:00:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:00:01,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:00:01,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:00:01,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216850353] [2022-04-08 12:00:01,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:00:01,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:00:01,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:00:01,388 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 12:00:01,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 12:00:01,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 12:00:01,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:00:01,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-08 12:00:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:00:02,198 INFO L272 TraceCheckUtils]: 0: Hoare triple {299#true} call ULTIMATE.init(); {299#true} is VALID [2022-04-08 12:00:02,198 INFO L290 TraceCheckUtils]: 1: Hoare triple {299#true} #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); {299#true} is VALID [2022-04-08 12:00:02,201 INFO L290 TraceCheckUtils]: 2: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-08 12:00:02,201 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {299#true} {299#true} #94#return; {299#true} is VALID [2022-04-08 12:00:02,202 INFO L272 TraceCheckUtils]: 4: Hoare triple {299#true} call #t~ret3 := main(); {299#true} is VALID [2022-04-08 12:00:02,202 INFO L290 TraceCheckUtils]: 5: Hoare triple {299#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1; {299#true} is VALID [2022-04-08 12:00:02,202 INFO L272 TraceCheckUtils]: 6: Hoare triple {299#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 50 then 1 else 0)); {299#true} is VALID [2022-04-08 12:00:02,202 INFO L290 TraceCheckUtils]: 7: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-08 12:00:02,203 INFO L290 TraceCheckUtils]: 8: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-08 12:00:02,203 INFO L290 TraceCheckUtils]: 9: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-08 12:00:02,203 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {299#true} {299#true} #82#return; {299#true} is VALID [2022-04-08 12:00:02,204 INFO L290 TraceCheckUtils]: 11: Hoare triple {299#true} ~B~0 := #t~nondet2;havoc #t~nondet2; {299#true} is VALID [2022-04-08 12:00:02,204 INFO L272 TraceCheckUtils]: 12: Hoare triple {299#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 0 && ~B~0 % 4294967296 <= 50 then 1 else 0)); {299#true} is VALID [2022-04-08 12:00:02,204 INFO L290 TraceCheckUtils]: 13: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-08 12:00:02,205 INFO L290 TraceCheckUtils]: 14: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-08 12:00:02,205 INFO L290 TraceCheckUtils]: 15: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-08 12:00:02,205 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {299#true} {299#true} #84#return; {299#true} is VALID [2022-04-08 12:00:02,205 INFO L272 TraceCheckUtils]: 17: Hoare triple {299#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {299#true} is VALID [2022-04-08 12:00:02,206 INFO L290 TraceCheckUtils]: 18: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-08 12:00:02,210 INFO L290 TraceCheckUtils]: 19: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-08 12:00:02,211 INFO L290 TraceCheckUtils]: 20: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-08 12:00:02,211 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {299#true} {299#true} #86#return; {299#true} is VALID [2022-04-08 12:00:02,211 INFO L272 TraceCheckUtils]: 22: Hoare triple {299#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {299#true} is VALID [2022-04-08 12:00:02,211 INFO L290 TraceCheckUtils]: 23: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-08 12:00:02,212 INFO L290 TraceCheckUtils]: 24: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-08 12:00:02,212 INFO L290 TraceCheckUtils]: 25: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-08 12:00:02,212 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {299#true} {299#true} #88#return; {299#true} is VALID [2022-04-08 12:00:02,213 INFO L290 TraceCheckUtils]: 27: Hoare triple {299#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {385#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 12:00:02,214 INFO L290 TraceCheckUtils]: 28: Hoare triple {385#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !false; {385#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 12:00:02,214 INFO L290 TraceCheckUtils]: 29: Hoare triple {385#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {392#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 12:00:02,215 INFO L290 TraceCheckUtils]: 30: Hoare triple {392#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !false; {392#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-08 12:00:02,217 INFO L272 TraceCheckUtils]: 31: Hoare triple {392#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {399#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:00:02,217 INFO L290 TraceCheckUtils]: 32: Hoare triple {399#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {403#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:00:02,218 INFO L290 TraceCheckUtils]: 33: Hoare triple {403#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {300#false} is VALID [2022-04-08 12:00:02,218 INFO L290 TraceCheckUtils]: 34: Hoare triple {300#false} assume !false; {300#false} is VALID [2022-04-08 12:00:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:00:02,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:00:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:00:02,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901551286] [2022-04-08 12:00:02,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:00:02,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216850353] [2022-04-08 12:00:02,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216850353] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:00:02,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:00:02,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 12:00:02,223 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:00:02,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [264049997] [2022-04-08 12:00:02,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [264049997] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:00:02,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:00:02,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 12:00:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446427216] [2022-04-08 12:00:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:00:02,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-04-08 12:00:02,227 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:00:02,229 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:00:02,267 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:02,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 12:00:02,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:00:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 12:00:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-08 12:00:02,275 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:00:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:02,515 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-04-08 12:00:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 12:00:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-04-08 12:00:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:00:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:00:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 48 transitions. [2022-04-08 12:00:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:00:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 48 transitions. [2022-04-08 12:00:02,522 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 48 transitions. [2022-04-08 12:00:02,568 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:02,570 INFO L225 Difference]: With dead ends: 40 [2022-04-08 12:00:02,570 INFO L226 Difference]: Without dead ends: 37 [2022-04-08 12:00:02,571 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-08 12:00:02,572 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 12:00:02,572 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 100 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 12:00:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-08 12:00:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-04-08 12:00:02,585 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:00:02,586 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:02,586 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:02,587 INFO L87 Difference]: Start difference. First operand 37 states. Second operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:02,590 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-04-08 12:00:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-04-08 12:00:02,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:00:02,591 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:00:02,591 INFO L74 IsIncluded]: Start isIncluded. First operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 37 states. [2022-04-08 12:00:02,591 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 37 states. [2022-04-08 12:00:02,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:02,595 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-04-08 12:00:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-04-08 12:00:02,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:00:02,596 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:00:02,596 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:00:02,596 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:00:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-04-08 12:00:02,599 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 35 [2022-04-08 12:00:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:00:02,599 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-04-08 12:00:02,600 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:00:02,600 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 37 states and 44 transitions. [2022-04-08 12:00:02,650 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-04-08 12:00:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-08 12:00:02,651 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:00:02,651 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:00:02,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-08 12:00:02,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:00:02,856 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:00:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:00:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -382866049, now seen corresponding path program 1 times [2022-04-08 12:00:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:00:02,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1800656479] [2022-04-08 12:00:02,857 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:00:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash -382866049, now seen corresponding path program 2 times [2022-04-08 12:00:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:00:02,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833198386] [2022-04-08 12:00:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:00:02,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:00:02,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:00:02,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400296161] [2022-04-08 12:00:02,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:00:02,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:00:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:00:02,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 12:00:02,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 12:00:02,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 12:00:02,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:00:02,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-08 12:00:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:00:02,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:00:03,071 INFO L272 TraceCheckUtils]: 0: Hoare triple {639#true} call ULTIMATE.init(); {639#true} is VALID [2022-04-08 12:00:03,071 INFO L290 TraceCheckUtils]: 1: Hoare triple {639#true} #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); {639#true} is VALID [2022-04-08 12:00:03,072 INFO L290 TraceCheckUtils]: 2: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-08 12:00:03,072 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {639#true} {639#true} #94#return; {639#true} is VALID [2022-04-08 12:00:03,072 INFO L272 TraceCheckUtils]: 4: Hoare triple {639#true} call #t~ret3 := main(); {639#true} is VALID [2022-04-08 12:00:03,072 INFO L290 TraceCheckUtils]: 5: Hoare triple {639#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1; {639#true} is VALID [2022-04-08 12:00:03,072 INFO L272 TraceCheckUtils]: 6: Hoare triple {639#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 50 then 1 else 0)); {639#true} is VALID [2022-04-08 12:00:03,072 INFO L290 TraceCheckUtils]: 7: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-08 12:00:03,072 INFO L290 TraceCheckUtils]: 8: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-08 12:00:03,073 INFO L290 TraceCheckUtils]: 9: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-08 12:00:03,073 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {639#true} {639#true} #82#return; {639#true} is VALID [2022-04-08 12:00:03,073 INFO L290 TraceCheckUtils]: 11: Hoare triple {639#true} ~B~0 := #t~nondet2;havoc #t~nondet2; {639#true} is VALID [2022-04-08 12:00:03,073 INFO L272 TraceCheckUtils]: 12: Hoare triple {639#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 0 && ~B~0 % 4294967296 <= 50 then 1 else 0)); {639#true} is VALID [2022-04-08 12:00:03,073 INFO L290 TraceCheckUtils]: 13: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-08 12:00:03,073 INFO L290 TraceCheckUtils]: 14: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-08 12:00:03,073 INFO L290 TraceCheckUtils]: 15: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-08 12:00:03,074 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {639#true} {639#true} #84#return; {639#true} is VALID [2022-04-08 12:00:03,074 INFO L272 TraceCheckUtils]: 17: Hoare triple {639#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {639#true} is VALID [2022-04-08 12:00:03,074 INFO L290 TraceCheckUtils]: 18: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-08 12:00:03,074 INFO L290 TraceCheckUtils]: 19: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-08 12:00:03,074 INFO L290 TraceCheckUtils]: 20: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-08 12:00:03,074 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {639#true} {639#true} #86#return; {639#true} is VALID [2022-04-08 12:00:03,074 INFO L272 TraceCheckUtils]: 22: Hoare triple {639#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {639#true} is VALID [2022-04-08 12:00:03,075 INFO L290 TraceCheckUtils]: 23: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-08 12:00:03,075 INFO L290 TraceCheckUtils]: 24: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-08 12:00:03,075 INFO L290 TraceCheckUtils]: 25: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-08 12:00:03,075 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {639#true} {639#true} #88#return; {639#true} is VALID [2022-04-08 12:00:03,076 INFO L290 TraceCheckUtils]: 27: Hoare triple {639#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {725#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 12:00:03,076 INFO L290 TraceCheckUtils]: 28: Hoare triple {725#(= main_~B~0 main_~b~0)} assume !false; {725#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 12:00:03,077 INFO L290 TraceCheckUtils]: 29: Hoare triple {725#(= main_~B~0 main_~b~0)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {725#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 12:00:03,077 INFO L290 TraceCheckUtils]: 30: Hoare triple {725#(= main_~B~0 main_~b~0)} assume !false; {725#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 12:00:03,077 INFO L272 TraceCheckUtils]: 31: Hoare triple {725#(= main_~B~0 main_~b~0)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {639#true} is VALID [2022-04-08 12:00:03,077 INFO L290 TraceCheckUtils]: 32: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-08 12:00:03,077 INFO L290 TraceCheckUtils]: 33: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-08 12:00:03,078 INFO L290 TraceCheckUtils]: 34: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-08 12:00:03,078 INFO L284 TraceCheckUtils]: 35: Hoare quadruple {639#true} {725#(= main_~B~0 main_~b~0)} #90#return; {725#(= main_~B~0 main_~b~0)} is VALID [2022-04-08 12:00:03,079 INFO L290 TraceCheckUtils]: 36: Hoare triple {725#(= main_~B~0 main_~b~0)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {640#false} is VALID [2022-04-08 12:00:03,079 INFO L290 TraceCheckUtils]: 37: Hoare triple {640#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {640#false} is VALID [2022-04-08 12:00:03,079 INFO L290 TraceCheckUtils]: 38: Hoare triple {640#false} assume !false; {640#false} is VALID [2022-04-08 12:00:03,080 INFO L272 TraceCheckUtils]: 39: Hoare triple {640#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {640#false} is VALID [2022-04-08 12:00:03,080 INFO L290 TraceCheckUtils]: 40: Hoare triple {640#false} ~cond := #in~cond; {640#false} is VALID [2022-04-08 12:00:03,080 INFO L290 TraceCheckUtils]: 41: Hoare triple {640#false} assume 0 == ~cond; {640#false} is VALID [2022-04-08 12:00:03,080 INFO L290 TraceCheckUtils]: 42: Hoare triple {640#false} assume !false; {640#false} is VALID [2022-04-08 12:00:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:00:03,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:00:03,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:00:03,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833198386] [2022-04-08 12:00:03,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:00:03,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400296161] [2022-04-08 12:00:03,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400296161] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:00:03,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:00:03,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:00:03,082 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:00:03,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1800656479] [2022-04-08 12:00:03,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1800656479] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:00:03,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:00:03,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:00:03,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463710228] [2022-04-08 12:00:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:00:03,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-04-08 12:00:03,083 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:00:03,083 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-08 12:00:03,109 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:03,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 12:00:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:00:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 12:00:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:00:03,111 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-08 12:00:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:03,195 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2022-04-08 12:00:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 12:00:03,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-04-08 12:00:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:00:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-08 12:00:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-08 12:00:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-08 12:00:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-08 12:00:03,200 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2022-04-08 12:00:03,244 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:03,245 INFO L225 Difference]: With dead ends: 61 [2022-04-08 12:00:03,245 INFO L226 Difference]: Without dead ends: 39 [2022-04-08 12:00:03,246 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:00:03,247 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:00:03,247 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:00:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-08 12:00:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-04-08 12:00:03,259 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:00:03,259 INFO L82 GeneralOperation]: Start isEquivalent. First operand 39 states. Second operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:03,260 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:03,260 INFO L87 Difference]: Start difference. First operand 39 states. Second operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:03,262 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-04-08 12:00:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-08 12:00:03,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:00:03,263 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:00:03,263 INFO L74 IsIncluded]: Start isIncluded. First operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 39 states. [2022-04-08 12:00:03,264 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 39 states. [2022-04-08 12:00:03,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:00:03,266 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-04-08 12:00:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-08 12:00:03,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:00:03,267 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:00:03,267 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:00:03,267 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:00:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:00:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-04-08 12:00:03,269 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 43 [2022-04-08 12:00:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:00:03,270 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-04-08 12:00:03,270 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-08 12:00:03,270 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 46 transitions. [2022-04-08 12:00:03,324 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:00:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-08 12:00:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-08 12:00:03,325 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:00:03,325 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:00:03,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 12:00:03,540 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 12:00:03,541 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:00:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:00:03,541 INFO L85 PathProgramCache]: Analyzing trace with hash 866494938, now seen corresponding path program 1 times [2022-04-08 12:00:03,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:00:03,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1179840083] [2022-04-08 12:00:03,542 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:00:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash 866494938, now seen corresponding path program 2 times [2022-04-08 12:00:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:00:03,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085643173] [2022-04-08 12:00:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:00:03,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:00:03,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:00:03,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398246700] [2022-04-08 12:00:03,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:00:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:00:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:00:03,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 12:00:03,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process