/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/divbin.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 07:14:23,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 07:14:23,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 07:14:24,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 07:14:24,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 07:14:24,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 07:14:24,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 07:14:24,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-15 07:14:24,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 07:14:24,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 07:14:24,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 07:14:24,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 07:14:24,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 07:14:24,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 07:14:24,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 07:14:24,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 07:14:24,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 07:14:24,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 07:14:24,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 07:14:24,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 07:14:24,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 07:14:24,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 07:14:24,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 07:14:24,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 07:14:24,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 07:14:24,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 07:14:24,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 07:14:24,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 07:14:24,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 07:14:24,118 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 07:14:24,118 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 07:14:24,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 07:14:24,118 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 07:14:24,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 07:14:24,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 07:14:24,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 07:14:24,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 07:14:24,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 07:14:24,370 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 07:14:24,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/divbin.i [2022-04-15 07:14:24,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1b5604d/cd79196d735941e3ad7349d80a2b341e/FLAGe57d7226e [2022-04-15 07:14:24,793 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 07:14:24,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/divbin.i [2022-04-15 07:14:24,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1b5604d/cd79196d735941e3ad7349d80a2b341e/FLAGe57d7226e [2022-04-15 07:14:25,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1b5604d/cd79196d735941e3ad7349d80a2b341e [2022-04-15 07:14:25,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 07:14:25,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 07:14:25,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 07:14:25,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 07:14:25,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 07:14:25,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6da43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25, skipping insertion in model container [2022-04-15 07:14:25,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 07:14:25,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 07:14:25,397 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/divbin.i[950,963] [2022-04-15 07:14:25,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 07:14:25,420 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 07:14:25,431 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/divbin.i[950,963] [2022-04-15 07:14:25,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 07:14:25,452 INFO L208 MainTranslator]: Completed translation [2022-04-15 07:14:25,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25 WrapperNode [2022-04-15 07:14:25,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 07:14:25,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 07:14:25,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 07:14:25,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 07:14:25,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 07:14:25,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 07:14:25,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 07:14:25,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 07:14:25,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (1/1) ... [2022-04-15 07:14:25,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 07:14:25,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 07:14:25,516 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) [2022-04-15 07:14:25,518 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 [2022-04-15 07:14:25,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 07:14:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 07:14:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 07:14:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 07:14:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 07:14:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 07:14:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 07:14:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 07:14:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-15 07:14:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-15 07:14:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 07:14:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 07:14:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 07:14:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 07:14:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 07:14:25,627 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 07:14:25,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 07:14:25,747 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 07:14:25,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 07:14:25,753 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-15 07:14:25,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 07:14:25 BoogieIcfgContainer [2022-04-15 07:14:25,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 07:14:25,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 07:14:25,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 07:14:25,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 07:14:25,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 07:14:25" (1/3) ... [2022-04-15 07:14:25,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199a08e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 07:14:25, skipping insertion in model container [2022-04-15 07:14:25,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 07:14:25" (2/3) ... [2022-04-15 07:14:25,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199a08e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 07:14:25, skipping insertion in model container [2022-04-15 07:14:25,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 07:14:25" (3/3) ... [2022-04-15 07:14:25,762 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin.i [2022-04-15 07:14:25,782 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 07:14:25,782 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 07:14:25,826 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 07:14:25,833 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 [2022-04-15 07:14:25,833 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 07:14:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 07:14:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-15 07:14:25,860 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 07:14:25,860 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 07:14:25,861 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 07:14:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 07:14:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1345265538, now seen corresponding path program 1 times [2022-04-15 07:14:25,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 07:14:25,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2125020738] [2022-04-15 07:14:25,887 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 07:14:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1345265538, now seen corresponding path program 2 times [2022-04-15 07:14:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 07:14:25,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775449672] [2022-04-15 07:14:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 07:14:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 07:14:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 07:14:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 07:14:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 07:14:26,064 INFO L290 TraceCheckUtils]: 0: Hoare triple {47#(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); {34#true} is VALID [2022-04-15 07:14:26,065 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume true; {34#true} is VALID [2022-04-15 07:14:26,065 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {34#true} {34#true} #87#return; {34#true} is VALID [2022-04-15 07:14:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-15 07:14:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 07:14:26,098 INFO L290 TraceCheckUtils]: 0: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-15 07:14:26,101 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-15 07:14:26,101 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-15 07:14:26,101 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#false} {34#true} #79#return; {35#false} is VALID [2022-04-15 07:14:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-15 07:14:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 07:14:26,114 INFO L290 TraceCheckUtils]: 0: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-15 07:14:26,115 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-15 07:14:26,116 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-15 07:14:26,116 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#false} {35#false} #81#return; {35#false} is VALID [2022-04-15 07:14:26,117 INFO L272 TraceCheckUtils]: 0: Hoare triple {34#true} call ULTIMATE.init(); {47#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 07:14:26,118 INFO L290 TraceCheckUtils]: 1: Hoare triple {47#(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); {34#true} is VALID [2022-04-15 07:14:26,118 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#true} assume true; {34#true} is VALID [2022-04-15 07:14:26,118 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#true} {34#true} #87#return; {34#true} is VALID [2022-04-15 07:14:26,118 INFO L272 TraceCheckUtils]: 4: Hoare triple {34#true} call #t~ret3 := main(); {34#true} is VALID [2022-04-15 07:14:26,119 INFO L290 TraceCheckUtils]: 5: Hoare triple {34#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {34#true} is VALID [2022-04-15 07:14:26,119 INFO L272 TraceCheckUtils]: 6: Hoare triple {34#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {34#true} is VALID [2022-04-15 07:14:26,119 INFO L290 TraceCheckUtils]: 7: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-15 07:14:26,122 INFO L290 TraceCheckUtils]: 8: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-15 07:14:26,122 INFO L290 TraceCheckUtils]: 9: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-15 07:14:26,122 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {35#false} {34#true} #79#return; {35#false} is VALID [2022-04-15 07:14:26,122 INFO L272 TraceCheckUtils]: 11: Hoare triple {35#false} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {34#true} is VALID [2022-04-15 07:14:26,123 INFO L290 TraceCheckUtils]: 12: Hoare triple {34#true} ~cond := #in~cond; {34#true} is VALID [2022-04-15 07:14:26,123 INFO L290 TraceCheckUtils]: 13: Hoare triple {34#true} assume 0 == ~cond;assume false; {35#false} is VALID [2022-04-15 07:14:26,124 INFO L290 TraceCheckUtils]: 14: Hoare triple {35#false} assume true; {35#false} is VALID [2022-04-15 07:14:26,124 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {35#false} {35#false} #81#return; {35#false} is VALID [2022-04-15 07:14:26,124 INFO L290 TraceCheckUtils]: 16: Hoare triple {35#false} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {35#false} is VALID [2022-04-15 07:14:26,124 INFO L290 TraceCheckUtils]: 17: Hoare triple {35#false} assume !true; {35#false} is VALID [2022-04-15 07:14:26,124 INFO L290 TraceCheckUtils]: 18: Hoare triple {35#false} assume !true; {35#false} is VALID [2022-04-15 07:14:26,125 INFO L272 TraceCheckUtils]: 19: Hoare triple {35#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {35#false} is VALID [2022-04-15 07:14:26,125 INFO L290 TraceCheckUtils]: 20: Hoare triple {35#false} ~cond := #in~cond; {35#false} is VALID [2022-04-15 07:14:26,126 INFO L290 TraceCheckUtils]: 21: Hoare triple {35#false} assume 0 == ~cond; {35#false} is VALID [2022-04-15 07:14:26,126 INFO L290 TraceCheckUtils]: 22: Hoare triple {35#false} assume !false; {35#false} is VALID [2022-04-15 07:14:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 07:14:26,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 07:14:26,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775449672] [2022-04-15 07:14:26,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775449672] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 07:14:26,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 07:14:26,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 07:14:26,134 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 07:14:26,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2125020738] [2022-04-15 07:14:26,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2125020738] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 07:14:26,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 07:14:26,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 07:14:26,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709349676] [2022-04-15 07:14:26,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 07:14:26,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-15 07:14:26,146 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 07:14:26,149 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 07:14:26,194 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:26,194 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 07:14:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 07:14:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 07:14:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 07:14:26,226 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 07:14:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:26,399 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2022-04-15 07:14:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 07:14:26,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-15 07:14:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 07:14:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 07:14:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2022-04-15 07:14:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 07:14:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2022-04-15 07:14:26,416 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 78 transitions. [2022-04-15 07:14:26,507 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 78 edges. 78 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:26,515 INFO L225 Difference]: With dead ends: 55 [2022-04-15 07:14:26,516 INFO L226 Difference]: Without dead ends: 26 [2022-04-15 07:14:26,518 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 07:14:26,521 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 07:14:26,522 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 07:14:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-15 07:14:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-15 07:14:26,562 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 07:14:26,563 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 07:14:26,565 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 07:14:26,566 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 07:14:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:26,575 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-15 07:14:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-15 07:14:26,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 07:14:26,576 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 07:14:26,576 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-15 07:14:26,577 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-15 07:14:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:26,581 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-15 07:14:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-15 07:14:26,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 07:14:26,582 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 07:14:26,582 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 07:14:26,582 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 07:14:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 07:14:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-04-15 07:14:26,587 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 23 [2022-04-15 07:14:26,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 07:14:26,587 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-04-15 07:14:26,588 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 07:14:26,588 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 26 states and 30 transitions. [2022-04-15 07:14:26,626 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-15 07:14:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-15 07:14:26,628 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 07:14:26,629 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 07:14:26,629 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 07:14:26,630 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 07:14:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 07:14:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1801528411, now seen corresponding path program 1 times [2022-04-15 07:14:26,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 07:14:26,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [54172836] [2022-04-15 07:14:26,638 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 07:14:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1801528411, now seen corresponding path program 2 times [2022-04-15 07:14:26,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 07:14:26,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292071032] [2022-04-15 07:14:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 07:14:26,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 07:14:26,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 07:14:26,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338536112] [2022-04-15 07:14:26,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 07:14:26,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 07:14:26,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 07:14:26,661 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) [2022-04-15 07:14:26,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 07:14:26,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 07:14:26,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 07:14:26,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-15 07:14:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 07:14:26,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 07:14:27,311 INFO L272 TraceCheckUtils]: 0: Hoare triple {264#true} call ULTIMATE.init(); {264#true} is VALID [2022-04-15 07:14:27,311 INFO L290 TraceCheckUtils]: 1: Hoare triple {264#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); {264#true} is VALID [2022-04-15 07:14:27,311 INFO L290 TraceCheckUtils]: 2: Hoare triple {264#true} assume true; {264#true} is VALID [2022-04-15 07:14:27,311 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {264#true} {264#true} #87#return; {264#true} is VALID [2022-04-15 07:14:27,312 INFO L272 TraceCheckUtils]: 4: Hoare triple {264#true} call #t~ret3 := main(); {264#true} is VALID [2022-04-15 07:14:27,312 INFO L290 TraceCheckUtils]: 5: Hoare triple {264#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {264#true} is VALID [2022-04-15 07:14:27,312 INFO L272 TraceCheckUtils]: 6: Hoare triple {264#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {264#true} is VALID [2022-04-15 07:14:27,312 INFO L290 TraceCheckUtils]: 7: Hoare triple {264#true} ~cond := #in~cond; {264#true} is VALID [2022-04-15 07:14:27,312 INFO L290 TraceCheckUtils]: 8: Hoare triple {264#true} assume !(0 == ~cond); {264#true} is VALID [2022-04-15 07:14:27,313 INFO L290 TraceCheckUtils]: 9: Hoare triple {264#true} assume true; {264#true} is VALID [2022-04-15 07:14:27,313 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {264#true} {264#true} #79#return; {264#true} is VALID [2022-04-15 07:14:27,313 INFO L272 TraceCheckUtils]: 11: Hoare triple {264#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {264#true} is VALID [2022-04-15 07:14:27,313 INFO L290 TraceCheckUtils]: 12: Hoare triple {264#true} ~cond := #in~cond; {264#true} is VALID [2022-04-15 07:14:27,314 INFO L290 TraceCheckUtils]: 13: Hoare triple {264#true} assume !(0 == ~cond); {264#true} is VALID [2022-04-15 07:14:27,314 INFO L290 TraceCheckUtils]: 14: Hoare triple {264#true} assume true; {264#true} is VALID [2022-04-15 07:14:27,314 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {264#true} {264#true} #81#return; {264#true} is VALID [2022-04-15 07:14:27,315 INFO L290 TraceCheckUtils]: 16: Hoare triple {264#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {317#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 07:14:27,316 INFO L290 TraceCheckUtils]: 17: Hoare triple {317#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !false; {317#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 07:14:27,316 INFO L290 TraceCheckUtils]: 18: Hoare triple {317#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {324#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 07:14:27,317 INFO L290 TraceCheckUtils]: 19: Hoare triple {324#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !false; {324#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 07:14:27,318 INFO L272 TraceCheckUtils]: 20: Hoare triple {324#(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)); {331#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 07:14:27,319 INFO L290 TraceCheckUtils]: 21: Hoare triple {331#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {335#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 07:14:27,320 INFO L290 TraceCheckUtils]: 22: Hoare triple {335#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {265#false} is VALID [2022-04-15 07:14:27,320 INFO L290 TraceCheckUtils]: 23: Hoare triple {265#false} assume !false; {265#false} is VALID [2022-04-15 07:14:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 07:14:27,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 07:14:27,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 07:14:27,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292071032] [2022-04-15 07:14:27,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 07:14:27,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338536112] [2022-04-15 07:14:27,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338536112] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 07:14:27,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 07:14:27,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 07:14:27,323 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 07:14:27,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [54172836] [2022-04-15 07:14:27,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [54172836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 07:14:27,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 07:14:27,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 07:14:27,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632356626] [2022-04-15 07:14:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 07:14:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-04-15 07:14:27,325 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 07:14:27,325 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 07:14:27,346 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:27,346 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-15 07:14:27,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 07:14:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-15 07:14:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-15 07:14:27,348 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 07:14:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:27,576 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-04-15 07:14:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 07:14:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-04-15 07:14:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 07:14:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 07:14:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-15 07:14:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 07:14:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-15 07:14:27,588 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 43 transitions. [2022-04-15 07:14:27,642 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:27,643 INFO L225 Difference]: With dead ends: 37 [2022-04-15 07:14:27,644 INFO L226 Difference]: Without dead ends: 34 [2022-04-15 07:14:27,644 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-15 07:14:27,645 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 07:14:27,646 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 81 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 07:14:27,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-15 07:14:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-15 07:14:27,658 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 07:14:27,658 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:27,659 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:27,659 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:27,662 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-15 07:14:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-04-15 07:14:27,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 07:14:27,663 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 07:14:27,663 INFO L74 IsIncluded]: Start isIncluded. First operand has 34 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 34 states. [2022-04-15 07:14:27,663 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 34 states. [2022-04-15 07:14:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:27,666 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-15 07:14:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-04-15 07:14:27,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 07:14:27,667 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 07:14:27,667 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 07:14:27,667 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 07:14:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-04-15 07:14:27,669 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 24 [2022-04-15 07:14:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 07:14:27,669 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-04-15 07:14:27,670 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 07:14:27,674 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 34 states and 39 transitions. [2022-04-15 07:14:27,728 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-04-15 07:14:27,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-15 07:14:27,731 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 07:14:27,731 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 07:14:27,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 07:14:27,951 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 [2022-04-15 07:14:27,952 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 07:14:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 07:14:27,953 INFO L85 PathProgramCache]: Analyzing trace with hash 96987309, now seen corresponding path program 1 times [2022-04-15 07:14:27,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 07:14:27,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [640415010] [2022-04-15 07:14:27,953 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 07:14:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash 96987309, now seen corresponding path program 2 times [2022-04-15 07:14:27,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 07:14:27,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284850507] [2022-04-15 07:14:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 07:14:27,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 07:14:27,973 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 07:14:27,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783740579] [2022-04-15 07:14:27,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 07:14:27,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 07:14:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 07:14:27,975 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) [2022-04-15 07:14:27,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 07:14:28,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 07:14:28,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 07:14:28,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-15 07:14:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 07:14:28,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 07:14:28,142 INFO L272 TraceCheckUtils]: 0: Hoare triple {553#true} call ULTIMATE.init(); {553#true} is VALID [2022-04-15 07:14:28,142 INFO L290 TraceCheckUtils]: 1: Hoare triple {553#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); {553#true} is VALID [2022-04-15 07:14:28,142 INFO L290 TraceCheckUtils]: 2: Hoare triple {553#true} assume true; {553#true} is VALID [2022-04-15 07:14:28,142 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {553#true} {553#true} #87#return; {553#true} is VALID [2022-04-15 07:14:28,143 INFO L272 TraceCheckUtils]: 4: Hoare triple {553#true} call #t~ret3 := main(); {553#true} is VALID [2022-04-15 07:14:28,143 INFO L290 TraceCheckUtils]: 5: Hoare triple {553#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {553#true} is VALID [2022-04-15 07:14:28,143 INFO L272 TraceCheckUtils]: 6: Hoare triple {553#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {553#true} is VALID [2022-04-15 07:14:28,143 INFO L290 TraceCheckUtils]: 7: Hoare triple {553#true} ~cond := #in~cond; {553#true} is VALID [2022-04-15 07:14:28,143 INFO L290 TraceCheckUtils]: 8: Hoare triple {553#true} assume !(0 == ~cond); {553#true} is VALID [2022-04-15 07:14:28,143 INFO L290 TraceCheckUtils]: 9: Hoare triple {553#true} assume true; {553#true} is VALID [2022-04-15 07:14:28,144 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {553#true} {553#true} #79#return; {553#true} is VALID [2022-04-15 07:14:28,144 INFO L272 TraceCheckUtils]: 11: Hoare triple {553#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {553#true} is VALID [2022-04-15 07:14:28,144 INFO L290 TraceCheckUtils]: 12: Hoare triple {553#true} ~cond := #in~cond; {553#true} is VALID [2022-04-15 07:14:28,144 INFO L290 TraceCheckUtils]: 13: Hoare triple {553#true} assume !(0 == ~cond); {553#true} is VALID [2022-04-15 07:14:28,144 INFO L290 TraceCheckUtils]: 14: Hoare triple {553#true} assume true; {553#true} is VALID [2022-04-15 07:14:28,144 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {553#true} {553#true} #81#return; {553#true} is VALID [2022-04-15 07:14:28,145 INFO L290 TraceCheckUtils]: 16: Hoare triple {553#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {606#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 07:14:28,145 INFO L290 TraceCheckUtils]: 17: Hoare triple {606#(= main_~B~0 main_~b~0)} assume !false; {606#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 07:14:28,146 INFO L290 TraceCheckUtils]: 18: Hoare triple {606#(= main_~B~0 main_~b~0)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {606#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 07:14:28,146 INFO L290 TraceCheckUtils]: 19: Hoare triple {606#(= main_~B~0 main_~b~0)} assume !false; {606#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 07:14:28,147 INFO L272 TraceCheckUtils]: 20: Hoare triple {606#(= main_~B~0 main_~b~0)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {553#true} is VALID [2022-04-15 07:14:28,147 INFO L290 TraceCheckUtils]: 21: Hoare triple {553#true} ~cond := #in~cond; {553#true} is VALID [2022-04-15 07:14:28,147 INFO L290 TraceCheckUtils]: 22: Hoare triple {553#true} assume !(0 == ~cond); {553#true} is VALID [2022-04-15 07:14:28,147 INFO L290 TraceCheckUtils]: 23: Hoare triple {553#true} assume true; {553#true} is VALID [2022-04-15 07:14:28,148 INFO L284 TraceCheckUtils]: 24: Hoare quadruple {553#true} {606#(= main_~B~0 main_~b~0)} #83#return; {606#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 07:14:28,149 INFO L290 TraceCheckUtils]: 25: Hoare triple {606#(= 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); {554#false} is VALID [2022-04-15 07:14:28,149 INFO L290 TraceCheckUtils]: 26: Hoare triple {554#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {554#false} is VALID [2022-04-15 07:14:28,149 INFO L290 TraceCheckUtils]: 27: Hoare triple {554#false} assume !false; {554#false} is VALID [2022-04-15 07:14:28,150 INFO L272 TraceCheckUtils]: 28: Hoare triple {554#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {554#false} is VALID [2022-04-15 07:14:28,150 INFO L290 TraceCheckUtils]: 29: Hoare triple {554#false} ~cond := #in~cond; {554#false} is VALID [2022-04-15 07:14:28,150 INFO L290 TraceCheckUtils]: 30: Hoare triple {554#false} assume 0 == ~cond; {554#false} is VALID [2022-04-15 07:14:28,150 INFO L290 TraceCheckUtils]: 31: Hoare triple {554#false} assume !false; {554#false} is VALID [2022-04-15 07:14:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 07:14:28,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 07:14:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 07:14:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284850507] [2022-04-15 07:14:28,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 07:14:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783740579] [2022-04-15 07:14:28,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783740579] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 07:14:28,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 07:14:28,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 07:14:28,152 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 07:14:28,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [640415010] [2022-04-15 07:14:28,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [640415010] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 07:14:28,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 07:14:28,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 07:14:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966632990] [2022-04-15 07:14:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 07:14:28,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-04-15 07:14:28,154 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 07:14:28,154 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 07:14:28,179 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:28,179 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 07:14:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 07:14:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 07:14:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 07:14:28,180 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 07:14:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:30,367 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-04-15 07:14:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 07:14:30,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-04-15 07:14:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 07:14:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 07:14:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-15 07:14:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 07:14:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-15 07:14:30,375 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 50 transitions. [2022-04-15 07:14:30,437 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:30,438 INFO L225 Difference]: With dead ends: 58 [2022-04-15 07:14:30,438 INFO L226 Difference]: Without dead ends: 36 [2022-04-15 07:14:30,439 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 07:14:30,440 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 07:14:30,440 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 07:14:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-15 07:14:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-15 07:14:30,452 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 07:14:30,453 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:30,453 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:30,453 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:30,455 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-15 07:14:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-04-15 07:14:30,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 07:14:30,456 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 07:14:30,456 INFO L74 IsIncluded]: Start isIncluded. First operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 36 states. [2022-04-15 07:14:30,456 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 36 states. [2022-04-15 07:14:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 07:14:30,458 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-15 07:14:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-04-15 07:14:30,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 07:14:30,459 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 07:14:30,459 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 07:14:30,459 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 07:14:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 07:14:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-04-15 07:14:30,461 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 32 [2022-04-15 07:14:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 07:14:30,461 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-04-15 07:14:30,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 07:14:30,462 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 36 states and 41 transitions. [2022-04-15 07:14:30,519 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 07:14:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-04-15 07:14:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-15 07:14:30,521 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 07:14:30,521 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 07:14:30,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 07:14:30,735 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 [2022-04-15 07:14:30,736 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 07:14:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 07:14:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash 852542504, now seen corresponding path program 1 times [2022-04-15 07:14:30,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 07:14:30,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [500010235] [2022-04-15 07:14:30,737 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 07:14:30,737 INFO L85 PathProgramCache]: Analyzing trace with hash 852542504, now seen corresponding path program 2 times [2022-04-15 07:14:30,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 07:14:30,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365701187] [2022-04-15 07:14:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 07:14:30,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 07:14:30,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 07:14:30,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751247961] [2022-04-15 07:14:30,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 07:14:30,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 07:14:30,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 07:14:30,758 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) [2022-04-15 07:14:30,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process