/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_valuebound20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 12:00:30,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 12:00:30,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 12:00:30,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 12:00:30,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 12:00:30,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 12:00:30,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 12:00:30,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 12:00:30,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 12:00:30,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 12:00:30,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 12:00:30,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 12:00:30,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 12:00:30,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 12:00:30,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 12:00:30,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 12:00:30,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 12:00:30,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 12:00:30,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 12:00:30,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 12:00:30,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 12:00:30,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 12:00:30,938 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 12:00:30,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 12:00:31,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 12:00:31,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 12:00:31,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 12:00:31,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 12:00:31,178 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 12:00:31,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound20.i [2022-04-28 12:00:31,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f32e581/dc805647460849eba9ca1f59d3fa863c/FLAGcf244fde6 [2022-04-28 12:00:31,628 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 12:00:31,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound20.i [2022-04-28 12:00:31,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f32e581/dc805647460849eba9ca1f59d3fa863c/FLAGcf244fde6 [2022-04-28 12:00:32,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f32e581/dc805647460849eba9ca1f59d3fa863c [2022-04-28 12:00:32,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 12:00:32,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 12:00:32,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 12:00:32,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 12:00:32,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 12:00:32,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1ccc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32, skipping insertion in model container [2022-04-28 12:00:32,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 12:00:32,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 12:00:32,201 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_valuebound20.i[950,963] [2022-04-28 12:00:32,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 12:00:32,223 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 12:00:32,253 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_valuebound20.i[950,963] [2022-04-28 12:00:32,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 12:00:32,272 INFO L208 MainTranslator]: Completed translation [2022-04-28 12:00:32,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32 WrapperNode [2022-04-28 12:00:32,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 12:00:32,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 12:00:32,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 12:00:32,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 12:00:32,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 12:00:32,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 12:00:32,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 12:00:32,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 12:00:32,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (1/1) ... [2022-04-28 12:00:32,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 12:00:32,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:00:32,348 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 12:00:32,349 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 12:00:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 12:00:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 12:00:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 12:00:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 12:00:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 12:00:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 12:00:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 12:00:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 12:00:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 12:00:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 12:00:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 12:00:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 12:00:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 12:00:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 12:00:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 12:00:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 12:00:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 12:00:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 12:00:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 12:00:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 12:00:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 12:00:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 12:00:32,436 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 12:00:32,437 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 12:00:32,591 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 12:00:32,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 12:00:32,597 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-28 12:00:32,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:00:32 BoogieIcfgContainer [2022-04-28 12:00:32,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 12:00:32,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 12:00:32,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 12:00:32,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 12:00:32,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 12:00:32" (1/3) ... [2022-04-28 12:00:32,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b08b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:00:32, skipping insertion in model container [2022-04-28 12:00:32,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:00:32" (2/3) ... [2022-04-28 12:00:32,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b08b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:00:32, skipping insertion in model container [2022-04-28 12:00:32,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:00:32" (3/3) ... [2022-04-28 12:00:32,606 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound20.i [2022-04-28 12:00:32,617 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 12:00:32,617 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 12:00:32,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 12:00:32,675 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@7bb9d7e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e42fba6 [2022-04-28 12:00:32,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 12:00:32,687 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) [2022-04-28 12:00:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-28 12:00:32,694 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:00:32,694 INFO L195 NwaCegarLoop]: 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] [2022-04-28 12:00:32,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:00:32,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:00:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash 291922115, now seen corresponding path program 1 times [2022-04-28 12:00:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:00:32,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [642649783] [2022-04-28 12:00:32,715 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:00:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash 291922115, now seen corresponding path program 2 times [2022-04-28 12:00:32,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:00:32,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386870437] [2022-04-28 12:00:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:00:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:00:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 12:00:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:32,956 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 [2022-04-28 12:00:32,957 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume true; {37#true} is VALID [2022-04-28 12:00:32,958 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {37#true} {37#true} #94#return; {37#true} is VALID [2022-04-28 12:00:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 12:00:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:32,973 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:32,974 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:32,975 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:32,975 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {37#true} #82#return; {38#false} is VALID [2022-04-28 12:00:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-28 12:00:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:32,999 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:33,000 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:33,000 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:33,001 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {38#false} #84#return; {38#false} is VALID [2022-04-28 12:00:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-28 12:00:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:33,011 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:33,012 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:33,012 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:33,013 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {38#false} #86#return; {38#false} is VALID [2022-04-28 12:00:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-28 12:00:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:33,021 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:33,022 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:33,022 INFO L290 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:33,022 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {38#false} {38#false} #88#return; {38#false} is VALID [2022-04-28 12:00:33,024 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 [2022-04-28 12:00:33,024 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 [2022-04-28 12:00:33,024 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#true} assume true; {37#true} is VALID [2022-04-28 12:00:33,025 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#true} {37#true} #94#return; {37#true} is VALID [2022-04-28 12:00:33,025 INFO L272 TraceCheckUtils]: 4: Hoare triple {37#true} call #t~ret3 := main(); {37#true} is VALID [2022-04-28 12:00:33,025 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 [2022-04-28 12:00:33,025 INFO L272 TraceCheckUtils]: 6: Hoare triple {37#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 20 then 1 else 0)); {37#true} is VALID [2022-04-28 12:00:33,025 INFO L290 TraceCheckUtils]: 7: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:33,026 INFO L290 TraceCheckUtils]: 8: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:33,026 INFO L290 TraceCheckUtils]: 9: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:33,027 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {38#false} {37#true} #82#return; {38#false} is VALID [2022-04-28 12:00:33,027 INFO L290 TraceCheckUtils]: 11: Hoare triple {38#false} ~B~0 := #t~nondet2;havoc #t~nondet2; {38#false} is VALID [2022-04-28 12:00:33,027 INFO L272 TraceCheckUtils]: 12: Hoare triple {38#false} call assume_abort_if_not((if ~B~0 % 4294967296 >= 0 && ~B~0 % 4294967296 <= 20 then 1 else 0)); {37#true} is VALID [2022-04-28 12:00:33,027 INFO L290 TraceCheckUtils]: 13: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:33,028 INFO L290 TraceCheckUtils]: 14: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:33,028 INFO L290 TraceCheckUtils]: 15: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:33,028 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {38#false} {38#false} #84#return; {38#false} is VALID [2022-04-28 12:00:33,029 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 [2022-04-28 12:00:33,029 INFO L290 TraceCheckUtils]: 18: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:33,029 INFO L290 TraceCheckUtils]: 19: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:33,029 INFO L290 TraceCheckUtils]: 20: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:33,030 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {38#false} {38#false} #86#return; {38#false} is VALID [2022-04-28 12:00:33,030 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 [2022-04-28 12:00:33,030 INFO L290 TraceCheckUtils]: 23: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2022-04-28 12:00:33,031 INFO L290 TraceCheckUtils]: 24: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2022-04-28 12:00:33,032 INFO L290 TraceCheckUtils]: 25: Hoare triple {38#false} assume true; {38#false} is VALID [2022-04-28 12:00:33,032 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {38#false} {38#false} #88#return; {38#false} is VALID [2022-04-28 12:00:33,033 INFO L290 TraceCheckUtils]: 27: Hoare triple {38#false} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {38#false} is VALID [2022-04-28 12:00:33,036 INFO L290 TraceCheckUtils]: 28: Hoare triple {38#false} assume !true; {38#false} is VALID [2022-04-28 12:00:33,036 INFO L290 TraceCheckUtils]: 29: Hoare triple {38#false} assume !true; {38#false} is VALID [2022-04-28 12:00:33,037 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 [2022-04-28 12:00:33,037 INFO L290 TraceCheckUtils]: 31: Hoare triple {38#false} ~cond := #in~cond; {38#false} is VALID [2022-04-28 12:00:33,037 INFO L290 TraceCheckUtils]: 32: Hoare triple {38#false} assume 0 == ~cond; {38#false} is VALID [2022-04-28 12:00:33,038 INFO L290 TraceCheckUtils]: 33: Hoare triple {38#false} assume !false; {38#false} is VALID [2022-04-28 12:00:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-28 12:00:33,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:00:33,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386870437] [2022-04-28 12:00:33,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386870437] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:00:33,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:00:33,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 12:00:33,044 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:00:33,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [642649783] [2022-04-28 12:00:33,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [642649783] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:00:33,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:00:33,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 12:00:33,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530735875] [2022-04-28 12:00:33,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:00:33,053 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 [2022-04-28 12:00:33,054 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:00:33,057 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) [2022-04-28 12:00:33,102 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:33,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 12:00:33,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:00:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 12:00:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 12:00:33,143 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) [2022-04-28 12:00:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:33,313 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2022-04-28 12:00:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 12:00:33,314 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 [2022-04-28 12:00:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:00:33,316 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) [2022-04-28 12:00:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2022-04-28 12:00:33,327 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) [2022-04-28 12:00:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2022-04-28 12:00:33,341 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 90 transitions. [2022-04-28 12:00:33,447 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 90 edges. 90 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:33,455 INFO L225 Difference]: With dead ends: 61 [2022-04-28 12:00:33,455 INFO L226 Difference]: Without dead ends: 29 [2022-04-28 12:00:33,457 INFO L412 NwaCegarLoop]: 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 [2022-04-28 12:00:33,460 INFO L413 NwaCegarLoop]: 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 [2022-04-28 12:00:33,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 12:00:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-28 12:00:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-28 12:00:33,486 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:00:33,487 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) [2022-04-28 12:00:33,488 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) [2022-04-28 12:00:33,488 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) [2022-04-28 12:00:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:33,491 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-28 12:00:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-28 12:00:33,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:00:33,492 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:00:33,492 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. [2022-04-28 12:00:33,493 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. [2022-04-28 12:00:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:33,495 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-28 12:00:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-28 12:00:33,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:00:33,496 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:00:33,496 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:00:33,496 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:00:33,497 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) [2022-04-28 12:00:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-04-28 12:00:33,499 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34 [2022-04-28 12:00:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:00:33,500 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-04-28 12:00:33,500 INFO L496 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) [2022-04-28 12:00:33,500 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 35 transitions. [2022-04-28 12:00:33,539 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 12:00:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-28 12:00:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-28 12:00:33,540 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:00:33,541 INFO L195 NwaCegarLoop]: 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] [2022-04-28 12:00:33,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 12:00:33,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:00:33,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:00:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash -245963777, now seen corresponding path program 1 times [2022-04-28 12:00:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:00:33,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1425064354] [2022-04-28 12:00:33,543 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:00:33,543 INFO L85 PathProgramCache]: Analyzing trace with hash -245963777, now seen corresponding path program 2 times [2022-04-28 12:00:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:00:33,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822616226] [2022-04-28 12:00:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:00:33,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:00:33,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:00:33,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141755235] [2022-04-28 12:00:33,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:00:33,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:00:33,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:00:33,567 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) [2022-04-28 12:00:33,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 12:00:33,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 12:00:33,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:00:33,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-28 12:00:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:33,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:00:34,261 INFO L272 TraceCheckUtils]: 0: Hoare triple {299#true} call ULTIMATE.init(); {299#true} is VALID [2022-04-28 12:00:34,262 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 [2022-04-28 12:00:34,262 INFO L290 TraceCheckUtils]: 2: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-28 12:00:34,262 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {299#true} {299#true} #94#return; {299#true} is VALID [2022-04-28 12:00:34,262 INFO L272 TraceCheckUtils]: 4: Hoare triple {299#true} call #t~ret3 := main(); {299#true} is VALID [2022-04-28 12:00:34,263 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 [2022-04-28 12:00:34,263 INFO L272 TraceCheckUtils]: 6: Hoare triple {299#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 20 then 1 else 0)); {299#true} is VALID [2022-04-28 12:00:34,263 INFO L290 TraceCheckUtils]: 7: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-28 12:00:34,263 INFO L290 TraceCheckUtils]: 8: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-28 12:00:34,263 INFO L290 TraceCheckUtils]: 9: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-28 12:00:34,264 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {299#true} {299#true} #82#return; {299#true} is VALID [2022-04-28 12:00:34,264 INFO L290 TraceCheckUtils]: 11: Hoare triple {299#true} ~B~0 := #t~nondet2;havoc #t~nondet2; {299#true} is VALID [2022-04-28 12:00:34,264 INFO L272 TraceCheckUtils]: 12: Hoare triple {299#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 0 && ~B~0 % 4294967296 <= 20 then 1 else 0)); {299#true} is VALID [2022-04-28 12:00:34,264 INFO L290 TraceCheckUtils]: 13: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-28 12:00:34,264 INFO L290 TraceCheckUtils]: 14: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-28 12:00:34,265 INFO L290 TraceCheckUtils]: 15: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-28 12:00:34,265 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {299#true} {299#true} #84#return; {299#true} is VALID [2022-04-28 12:00:34,265 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 [2022-04-28 12:00:34,265 INFO L290 TraceCheckUtils]: 18: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-28 12:00:34,265 INFO L290 TraceCheckUtils]: 19: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-28 12:00:34,266 INFO L290 TraceCheckUtils]: 20: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-28 12:00:34,266 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {299#true} {299#true} #86#return; {299#true} is VALID [2022-04-28 12:00:34,266 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 [2022-04-28 12:00:34,266 INFO L290 TraceCheckUtils]: 23: Hoare triple {299#true} ~cond := #in~cond; {299#true} is VALID [2022-04-28 12:00:34,266 INFO L290 TraceCheckUtils]: 24: Hoare triple {299#true} assume !(0 == ~cond); {299#true} is VALID [2022-04-28 12:00:34,267 INFO L290 TraceCheckUtils]: 25: Hoare triple {299#true} assume true; {299#true} is VALID [2022-04-28 12:00:34,267 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {299#true} {299#true} #88#return; {299#true} is VALID [2022-04-28 12:00:34,267 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 [2022-04-28 12:00:34,268 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 [2022-04-28 12:00:34,269 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 [2022-04-28 12:00:34,269 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 [2022-04-28 12:00:34,270 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 [2022-04-28 12:00:34,271 INFO L290 TraceCheckUtils]: 32: Hoare triple {399#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {403#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:00:34,271 INFO L290 TraceCheckUtils]: 33: Hoare triple {403#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {300#false} is VALID [2022-04-28 12:00:34,271 INFO L290 TraceCheckUtils]: 34: Hoare triple {300#false} assume !false; {300#false} is VALID [2022-04-28 12:00:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-28 12:00:34,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 12:00:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:00:34,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822616226] [2022-04-28 12:00:34,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:00:34,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141755235] [2022-04-28 12:00:34,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141755235] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:00:34,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:00:34,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 12:00:34,274 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:00:34,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1425064354] [2022-04-28 12:00:34,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1425064354] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:00:34,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:00:34,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 12:00:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948065631] [2022-04-28 12:00:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:00:34,276 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 [2022-04-28 12:00:34,276 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:00:34,276 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) [2022-04-28 12:00:34,306 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:34,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 12:00:34,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:00:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 12:00:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-28 12:00:34,308 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) [2022-04-28 12:00:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:34,505 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-04-28 12:00:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 12:00:34,506 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 [2022-04-28 12:00:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:00:34,507 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) [2022-04-28 12:00:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 48 transitions. [2022-04-28 12:00:34,511 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) [2022-04-28 12:00:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 48 transitions. [2022-04-28 12:00:34,514 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 48 transitions. [2022-04-28 12:00:34,569 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:34,571 INFO L225 Difference]: With dead ends: 40 [2022-04-28 12:00:34,572 INFO L226 Difference]: Without dead ends: 37 [2022-04-28 12:00:34,572 INFO L412 NwaCegarLoop]: 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 [2022-04-28 12:00:34,573 INFO L413 NwaCegarLoop]: 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 [2022-04-28 12:00:34,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 100 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 12:00:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-28 12:00:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-04-28 12:00:34,586 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:00:34,587 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) [2022-04-28 12:00:34,587 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) [2022-04-28 12:00:34,588 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) [2022-04-28 12:00:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:34,590 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-04-28 12:00:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-04-28 12:00:34,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:00:34,591 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:00:34,591 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. [2022-04-28 12:00:34,592 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. [2022-04-28 12:00:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:34,594 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-04-28 12:00:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-04-28 12:00:34,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:00:34,595 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:00:34,595 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:00:34,595 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:00:34,595 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) [2022-04-28 12:00:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-04-28 12:00:34,597 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 35 [2022-04-28 12:00:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:00:34,597 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-04-28 12:00:34,598 INFO L496 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) [2022-04-28 12:00:34,598 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 37 states and 44 transitions. [2022-04-28 12:00:34,645 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-04-28 12:00:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-28 12:00:34,647 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:00:34,647 INFO L195 NwaCegarLoop]: 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] [2022-04-28 12:00:34,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 12:00:34,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:00:34,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:00:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:00:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash -382866049, now seen corresponding path program 1 times [2022-04-28 12:00:34,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:00:34,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1506933827] [2022-04-28 12:00:34,866 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:00:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -382866049, now seen corresponding path program 2 times [2022-04-28 12:00:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:00:34,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347115367] [2022-04-28 12:00:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:00:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:00:34,893 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:00:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837344077] [2022-04-28 12:00:34,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:00:34,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:00:34,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:00:34,899 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) [2022-04-28 12:00:34,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 12:00:34,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 12:00:34,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:00:34,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-28 12:00:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:00:34,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:00:35,076 INFO L272 TraceCheckUtils]: 0: Hoare triple {639#true} call ULTIMATE.init(); {639#true} is VALID [2022-04-28 12:00:35,076 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 [2022-04-28 12:00:35,077 INFO L290 TraceCheckUtils]: 2: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-28 12:00:35,077 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {639#true} {639#true} #94#return; {639#true} is VALID [2022-04-28 12:00:35,077 INFO L272 TraceCheckUtils]: 4: Hoare triple {639#true} call #t~ret3 := main(); {639#true} is VALID [2022-04-28 12:00:35,077 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 [2022-04-28 12:00:35,077 INFO L272 TraceCheckUtils]: 6: Hoare triple {639#true} call assume_abort_if_not((if ~A~0 % 4294967296 >= 0 && ~A~0 % 4294967296 <= 20 then 1 else 0)); {639#true} is VALID [2022-04-28 12:00:35,077 INFO L290 TraceCheckUtils]: 7: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-28 12:00:35,077 INFO L290 TraceCheckUtils]: 8: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-28 12:00:35,078 INFO L290 TraceCheckUtils]: 9: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-28 12:00:35,078 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {639#true} {639#true} #82#return; {639#true} is VALID [2022-04-28 12:00:35,078 INFO L290 TraceCheckUtils]: 11: Hoare triple {639#true} ~B~0 := #t~nondet2;havoc #t~nondet2; {639#true} is VALID [2022-04-28 12:00:35,078 INFO L272 TraceCheckUtils]: 12: Hoare triple {639#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 0 && ~B~0 % 4294967296 <= 20 then 1 else 0)); {639#true} is VALID [2022-04-28 12:00:35,078 INFO L290 TraceCheckUtils]: 13: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-28 12:00:35,078 INFO L290 TraceCheckUtils]: 14: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-28 12:00:35,079 INFO L290 TraceCheckUtils]: 15: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-28 12:00:35,079 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {639#true} {639#true} #84#return; {639#true} is VALID [2022-04-28 12:00:35,079 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 [2022-04-28 12:00:35,079 INFO L290 TraceCheckUtils]: 18: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-28 12:00:35,079 INFO L290 TraceCheckUtils]: 19: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-28 12:00:35,079 INFO L290 TraceCheckUtils]: 20: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-28 12:00:35,079 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {639#true} {639#true} #86#return; {639#true} is VALID [2022-04-28 12:00:35,080 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 [2022-04-28 12:00:35,080 INFO L290 TraceCheckUtils]: 23: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-28 12:00:35,080 INFO L290 TraceCheckUtils]: 24: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-28 12:00:35,080 INFO L290 TraceCheckUtils]: 25: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-28 12:00:35,080 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {639#true} {639#true} #88#return; {639#true} is VALID [2022-04-28 12:00:35,081 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 [2022-04-28 12:00:35,081 INFO L290 TraceCheckUtils]: 28: Hoare triple {725#(= main_~B~0 main_~b~0)} assume !false; {725#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 12:00:35,081 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 [2022-04-28 12:00:35,082 INFO L290 TraceCheckUtils]: 30: Hoare triple {725#(= main_~B~0 main_~b~0)} assume !false; {725#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 12:00:35,082 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 [2022-04-28 12:00:35,082 INFO L290 TraceCheckUtils]: 32: Hoare triple {639#true} ~cond := #in~cond; {639#true} is VALID [2022-04-28 12:00:35,082 INFO L290 TraceCheckUtils]: 33: Hoare triple {639#true} assume !(0 == ~cond); {639#true} is VALID [2022-04-28 12:00:35,082 INFO L290 TraceCheckUtils]: 34: Hoare triple {639#true} assume true; {639#true} is VALID [2022-04-28 12:00:35,083 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 [2022-04-28 12:00:35,084 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 [2022-04-28 12:00:35,084 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 [2022-04-28 12:00:35,084 INFO L290 TraceCheckUtils]: 38: Hoare triple {640#false} assume !false; {640#false} is VALID [2022-04-28 12:00:35,084 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 [2022-04-28 12:00:35,084 INFO L290 TraceCheckUtils]: 40: Hoare triple {640#false} ~cond := #in~cond; {640#false} is VALID [2022-04-28 12:00:35,085 INFO L290 TraceCheckUtils]: 41: Hoare triple {640#false} assume 0 == ~cond; {640#false} is VALID [2022-04-28 12:00:35,085 INFO L290 TraceCheckUtils]: 42: Hoare triple {640#false} assume !false; {640#false} is VALID [2022-04-28 12:00:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-28 12:00:35,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 12:00:35,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:00:35,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347115367] [2022-04-28 12:00:35,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:00:35,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837344077] [2022-04-28 12:00:35,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837344077] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:00:35,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:00:35,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 12:00:35,086 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:00:35,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1506933827] [2022-04-28 12:00:35,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1506933827] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:00:35,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:00:35,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 12:00:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459733285] [2022-04-28 12:00:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:00:35,087 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 [2022-04-28 12:00:35,088 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:00:35,088 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) [2022-04-28 12:00:35,126 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:35,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 12:00:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:00:35,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 12:00:35,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 12:00:35,128 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) [2022-04-28 12:00:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:35,209 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2022-04-28 12:00:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 12:00:35,209 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 [2022-04-28 12:00:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:00:35,212 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) [2022-04-28 12:00:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-28 12:00:35,214 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) [2022-04-28 12:00:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-28 12:00:35,218 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2022-04-28 12:00:35,261 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:35,264 INFO L225 Difference]: With dead ends: 61 [2022-04-28 12:00:35,265 INFO L226 Difference]: Without dead ends: 39 [2022-04-28 12:00:35,265 INFO L412 NwaCegarLoop]: 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 [2022-04-28 12:00:35,266 INFO L413 NwaCegarLoop]: 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 [2022-04-28 12:00:35,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 12:00:35,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-28 12:00:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-04-28 12:00:35,284 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:00:35,285 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) [2022-04-28 12:00:35,285 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) [2022-04-28 12:00:35,286 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) [2022-04-28 12:00:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:35,288 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-04-28 12:00:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-28 12:00:35,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:00:35,288 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:00:35,288 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. [2022-04-28 12:00:35,289 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. [2022-04-28 12:00:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:00:35,290 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-04-28 12:00:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-28 12:00:35,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:00:35,291 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:00:35,291 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:00:35,291 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:00:35,291 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) [2022-04-28 12:00:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-04-28 12:00:35,293 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 43 [2022-04-28 12:00:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:00:35,293 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-04-28 12:00:35,293 INFO L496 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) [2022-04-28 12:00:35,293 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 46 transitions. [2022-04-28 12:00:35,342 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:00:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-28 12:00:35,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-28 12:00:35,346 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:00:35,346 INFO L195 NwaCegarLoop]: 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] [2022-04-28 12:00:35,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-28 12:00:35,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 12:00:35,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:00:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:00:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash 866494938, now seen corresponding path program 1 times [2022-04-28 12:00:35,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:00:35,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [301144196] [2022-04-28 12:00:35,564 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:00:35,564 INFO L85 PathProgramCache]: Analyzing trace with hash 866494938, now seen corresponding path program 2 times [2022-04-28 12:00:35,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:00:35,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949648740] [2022-04-28 12:00:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:00:35,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:00:35,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:00:35,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039608372] [2022-04-28 12:00:35,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:00:35,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:00:35,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:00:35,591 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) [2022-04-28 12:00:35,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process