/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-scaling/geo1-u_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 06:06:46,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 06:06:46,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 06:06:46,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 06:06:46,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 06:06:46,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 06:06:46,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 06:06:46,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 06:06:46,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 06:06:46,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 06:06:46,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 06:06:46,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 06:06:46,582 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 06:06:46,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 06:06:46,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 06:06:46,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 06:06:46,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 06:06:46,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 06:06:46,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 06:06:46,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 06:06:46,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 06:06:46,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 06:06:46,614 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 06:06:46,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 06:06:46,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 06:06:46,615 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 06:06:46,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 06:06:46,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 06:06:46,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 06:06:46,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 06:06:46,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 06:06:46,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 06:06:46,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 06:06:46,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 06:06:46,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 06:06:46,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 06:06:46,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 06:06:46,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 06:06:46,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 06:06:46,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 06:06:46,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 06:06:46,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 06:06:46,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 06:06:46,618 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 06:06:46,618 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 06:06:46,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 06:06:46,619 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 06:06:46,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 06:06:46,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 06:06:46,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 06:06:46,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 06:06:46,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 06:06:46,871 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 06:06:46,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c [2022-04-28 06:06:46,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5ef93e4/3631b28e2364435f947bec981864b1a0/FLAG340e27449 [2022-04-28 06:06:47,367 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 06:06:47,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c [2022-04-28 06:06:47,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5ef93e4/3631b28e2364435f947bec981864b1a0/FLAG340e27449 [2022-04-28 06:06:47,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5ef93e4/3631b28e2364435f947bec981864b1a0 [2022-04-28 06:06:47,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 06:06:47,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 06:06:47,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 06:06:47,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 06:06:47,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 06:06:47,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2845ba2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47, skipping insertion in model container [2022-04-28 06:06:47,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 06:06:47,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 06:06:47,623 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/geo1-u_unwindbound1.c[555,568] [2022-04-28 06:06:47,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 06:06:47,656 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 06:06:47,668 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/geo1-u_unwindbound1.c[555,568] [2022-04-28 06:06:47,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 06:06:47,692 INFO L208 MainTranslator]: Completed translation [2022-04-28 06:06:47,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47 WrapperNode [2022-04-28 06:06:47,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 06:06:47,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 06:06:47,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 06:06:47,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 06:06:47,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 06:06:47,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 06:06:47,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 06:06:47,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 06:06:47,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (1/1) ... [2022-04-28 06:06:47,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 06:06:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:47,756 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 06:06:47,782 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 06:06:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 06:06:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 06:06:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 06:06:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 06:06:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 06:06:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 06:06:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 06:06:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 06:06:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 06:06:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 06:06:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 06:06:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 06:06:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 06:06:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 06:06:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 06:06:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 06:06:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 06:06:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 06:06:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 06:06:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 06:06:47,859 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 06:06:47,861 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 06:06:48,017 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 06:06:48,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 06:06:48,023 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 06:06:48,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 06:06:48 BoogieIcfgContainer [2022-04-28 06:06:48,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 06:06:48,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 06:06:48,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 06:06:48,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 06:06:48,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 06:06:47" (1/3) ... [2022-04-28 06:06:48,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160ec28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 06:06:48, skipping insertion in model container [2022-04-28 06:06:48,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:47" (2/3) ... [2022-04-28 06:06:48,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160ec28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 06:06:48, skipping insertion in model container [2022-04-28 06:06:48,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 06:06:48" (3/3) ... [2022-04-28 06:06:48,031 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound1.c [2022-04-28 06:06:48,043 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 06:06:48,043 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 06:06:48,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 06:06:48,145 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@387a0a2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f25b3d6 [2022-04-28 06:06:48,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 06:06:48,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 06:06:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 06:06:48,159 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:48,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:48,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1864317590, now seen corresponding path program 1 times [2022-04-28 06:06:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:48,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1950164732] [2022-04-28 06:06:48,210 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1864317590, now seen corresponding path program 2 times [2022-04-28 06:06:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:48,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919199288] [2022-04-28 06:06:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:48,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:48,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 06:06:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:48,440 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#(and (= ~counter~0 |old(~counter~0)|) (= |#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);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {26#true} is VALID [2022-04-28 06:06:48,441 INFO L290 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-28 06:06:48,441 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #55#return; {26#true} is VALID [2022-04-28 06:06:48,443 INFO L272 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 06:06:48,444 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#(and (= ~counter~0 |old(~counter~0)|) (= |#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);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {26#true} is VALID [2022-04-28 06:06:48,444 INFO L290 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-28 06:06:48,444 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26#true} {26#true} #55#return; {26#true} is VALID [2022-04-28 06:06:48,445 INFO L272 TraceCheckUtils]: 4: Hoare triple {26#true} call #t~ret7 := main(); {26#true} is VALID [2022-04-28 06:06:48,445 INFO L290 TraceCheckUtils]: 5: Hoare triple {26#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4;~k~0 := #t~nondet5;havoc #t~nondet5;~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {26#true} is VALID [2022-04-28 06:06:48,446 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#true} assume !true; {27#false} is VALID [2022-04-28 06:06:48,446 INFO L290 TraceCheckUtils]: 7: Hoare triple {27#false} ~x~0 := ~x~0 * ((~z~0 - 1) % 4294967296); {27#false} is VALID [2022-04-28 06:06:48,447 INFO L272 TraceCheckUtils]: 8: Hoare triple {27#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {27#false} is VALID [2022-04-28 06:06:48,447 INFO L290 TraceCheckUtils]: 9: Hoare triple {27#false} ~cond := #in~cond; {27#false} is VALID [2022-04-28 06:06:48,447 INFO L290 TraceCheckUtils]: 10: Hoare triple {27#false} assume 0 == ~cond; {27#false} is VALID [2022-04-28 06:06:48,448 INFO L290 TraceCheckUtils]: 11: Hoare triple {27#false} assume !false; {27#false} is VALID [2022-04-28 06:06:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 06:06:48,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:48,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919199288] [2022-04-28 06:06:48,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919199288] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:48,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:48,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 06:06:48,452 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1950164732] [2022-04-28 06:06:48,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1950164732] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:48,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:48,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 06:06:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112098122] [2022-04-28 06:06:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:48,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 06:06:48,462 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:48,464 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:48,488 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:48,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 06:06:48,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 06:06:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 06:06:48,509 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:48,639 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-04-28 06:06:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 06:06:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 06:06:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-04-28 06:06:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-04-28 06:06:48,660 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 52 transitions. [2022-04-28 06:06:48,718 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:48,726 INFO L225 Difference]: With dead ends: 41 [2022-04-28 06:06:48,726 INFO L226 Difference]: Without dead ends: 19 [2022-04-28 06:06:48,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 06:06:48,731 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:48,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-28 06:06:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-04-28 06:06:48,756 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:48,757 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 06:06:48,758 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 06:06:48,758 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 06:06:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:48,761 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-28 06:06:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-28 06:06:48,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:48,762 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:48,762 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-28 06:06:48,762 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-28 06:06:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:48,764 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-28 06:06:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-28 06:06:48,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:48,765 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:48,765 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:48,765 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 06:06:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-04-28 06:06:48,768 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-04-28 06:06:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:48,769 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-04-28 06:06:48,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:48,769 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 18 states and 20 transitions. [2022-04-28 06:06:48,798 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-28 06:06:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 06:06:48,801 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:48,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 06:06:48,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2049175951, now seen corresponding path program 1 times [2022-04-28 06:06:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:48,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1753662294] [2022-04-28 06:06:48,804 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:48,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2049175951, now seen corresponding path program 2 times [2022-04-28 06:06:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:48,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460875150] [2022-04-28 06:06:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:48,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:48,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:48,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142424565] [2022-04-28 06:06:48,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:48,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:48,839 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 06:06:48,845 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 06:06:48,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 06:06:48,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 06:06:48,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 06:06:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:48,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 06:06:49,058 INFO L272 TraceCheckUtils]: 0: Hoare triple {190#true} call ULTIMATE.init(); {190#true} is VALID [2022-04-28 06:06:49,059 INFO L290 TraceCheckUtils]: 1: Hoare triple {190#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);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {190#true} is VALID [2022-04-28 06:06:49,060 INFO L290 TraceCheckUtils]: 2: Hoare triple {190#true} assume true; {190#true} is VALID [2022-04-28 06:06:49,060 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {190#true} {190#true} #55#return; {190#true} is VALID [2022-04-28 06:06:49,060 INFO L272 TraceCheckUtils]: 4: Hoare triple {190#true} call #t~ret7 := main(); {190#true} is VALID [2022-04-28 06:06:49,062 INFO L290 TraceCheckUtils]: 5: Hoare triple {190#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4;~k~0 := #t~nondet5;havoc #t~nondet5;~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:49,064 INFO L290 TraceCheckUtils]: 6: Hoare triple {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:49,065 INFO L290 TraceCheckUtils]: 7: Hoare triple {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} assume !!(#t~post6 < 1);havoc #t~post6; {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:49,067 INFO L272 TraceCheckUtils]: 8: Hoare triple {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + (~x~0 * (~z~0 % 4294967296) - ~x~0 - ~y~0) then 1 else 0)); {220#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 06:06:49,068 INFO L290 TraceCheckUtils]: 9: Hoare triple {220#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {224#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 06:06:49,068 INFO L290 TraceCheckUtils]: 10: Hoare triple {224#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {191#false} is VALID [2022-04-28 06:06:49,068 INFO L290 TraceCheckUtils]: 11: Hoare triple {191#false} assume !false; {191#false} is VALID [2022-04-28 06:06:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 06:06:49,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 06:06:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460875150] [2022-04-28 06:06:49,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 06:06:49,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142424565] [2022-04-28 06:06:49,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142424565] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:49,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:49,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 06:06:49,073 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:49,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1753662294] [2022-04-28 06:06:49,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1753662294] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:49,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:49,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 06:06:49,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966845833] [2022-04-28 06:06:49,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:49,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 06:06:49,075 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:49,075 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,088 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 06:06:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 06:06:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 06:06:49,091 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:49,224 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-28 06:06:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 06:06:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 06:06:49,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2022-04-28 06:06:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2022-04-28 06:06:49,229 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 33 transitions. [2022-04-28 06:06:49,264 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:49,267 INFO L225 Difference]: With dead ends: 29 [2022-04-28 06:06:49,268 INFO L226 Difference]: Without dead ends: 27 [2022-04-28 06:06:49,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 06:06:49,271 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:49,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-28 06:06:49,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-04-28 06:06:49,292 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:49,293 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,294 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,295 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:49,298 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 06:06:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 06:06:49,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:49,299 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:49,299 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-28 06:06:49,299 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-28 06:06:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:49,302 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 06:06:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 06:06:49,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:49,303 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:49,303 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:49,303 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-28 06:06:49,309 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2022-04-28 06:06:49,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:49,310 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-28 06:06:49,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,310 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 28 transitions. [2022-04-28 06:06:49,339 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-28 06:06:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-28 06:06:49,340 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:49,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:49,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-28 06:06:49,562 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 06:06:49,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:49,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash -975399299, now seen corresponding path program 1 times [2022-04-28 06:06:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:49,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1287336530] [2022-04-28 06:06:49,564 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash -975399299, now seen corresponding path program 2 times [2022-04-28 06:06:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:49,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146643089] [2022-04-28 06:06:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:49,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:49,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273154487] [2022-04-28 06:06:49,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:49,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:49,584 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 06:06:49,587 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 06:06:49,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 06:06:49,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 06:06:49,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 06:06:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:49,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 06:06:49,738 INFO L272 TraceCheckUtils]: 0: Hoare triple {394#true} call ULTIMATE.init(); {394#true} is VALID [2022-04-28 06:06:49,739 INFO L290 TraceCheckUtils]: 1: Hoare triple {394#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);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {402#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:49,739 INFO L290 TraceCheckUtils]: 2: Hoare triple {402#(<= ~counter~0 0)} assume true; {402#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:49,740 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {402#(<= ~counter~0 0)} {394#true} #55#return; {402#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:49,740 INFO L272 TraceCheckUtils]: 4: Hoare triple {402#(<= ~counter~0 0)} call #t~ret7 := main(); {402#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:49,741 INFO L290 TraceCheckUtils]: 5: Hoare triple {402#(<= ~counter~0 0)} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4;~k~0 := #t~nondet5;havoc #t~nondet5;~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {402#(<= ~counter~0 0)} is VALID [2022-04-28 06:06:49,742 INFO L290 TraceCheckUtils]: 6: Hoare triple {402#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {418#(<= |main_#t~post6| 0)} is VALID [2022-04-28 06:06:49,742 INFO L290 TraceCheckUtils]: 7: Hoare triple {418#(<= |main_#t~post6| 0)} assume !(#t~post6 < 1);havoc #t~post6; {395#false} is VALID [2022-04-28 06:06:49,743 INFO L290 TraceCheckUtils]: 8: Hoare triple {395#false} ~x~0 := ~x~0 * ((~z~0 - 1) % 4294967296); {395#false} is VALID [2022-04-28 06:06:49,743 INFO L272 TraceCheckUtils]: 9: Hoare triple {395#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {395#false} is VALID [2022-04-28 06:06:49,743 INFO L290 TraceCheckUtils]: 10: Hoare triple {395#false} ~cond := #in~cond; {395#false} is VALID [2022-04-28 06:06:49,743 INFO L290 TraceCheckUtils]: 11: Hoare triple {395#false} assume 0 == ~cond; {395#false} is VALID [2022-04-28 06:06:49,743 INFO L290 TraceCheckUtils]: 12: Hoare triple {395#false} assume !false; {395#false} is VALID [2022-04-28 06:06:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 06:06:49,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 06:06:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:49,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146643089] [2022-04-28 06:06:49,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 06:06:49,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273154487] [2022-04-28 06:06:49,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273154487] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:49,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:49,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 06:06:49,745 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:49,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1287336530] [2022-04-28 06:06:49,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1287336530] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:49,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:49,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 06:06:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187196245] [2022-04-28 06:06:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:49,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 06:06:49,746 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:49,746 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,757 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:49,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 06:06:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 06:06:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 06:06:49,759 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:49,822 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-28 06:06:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 06:06:49,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 06:06:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2022-04-28 06:06:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2022-04-28 06:06:49,837 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 30 transitions. [2022-04-28 06:06:49,861 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:49,862 INFO L225 Difference]: With dead ends: 33 [2022-04-28 06:06:49,862 INFO L226 Difference]: Without dead ends: 25 [2022-04-28 06:06:49,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 06:06:49,864 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:49,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-28 06:06:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-28 06:06:49,883 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:49,884 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,884 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,884 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:49,887 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-28 06:06:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 06:06:49,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:49,887 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:49,888 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-28 06:06:49,888 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-28 06:06:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:49,893 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-28 06:06:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 06:06:49,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:49,895 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:49,895 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:49,895 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 06:06:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-28 06:06:49,899 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2022-04-28 06:06:49,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:49,899 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-28 06:06:49,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 06:06:49,899 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 27 transitions. [2022-04-28 06:06:49,932 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 06:06:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-28 06:06:49,933 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:49,933 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:49,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 06:06:50,147 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 06:06:50,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:50,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash 198190047, now seen corresponding path program 1 times [2022-04-28 06:06:50,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:50,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1018000760] [2022-04-28 06:06:50,149 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash 198190047, now seen corresponding path program 2 times [2022-04-28 06:06:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:50,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411751718] [2022-04-28 06:06:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:50,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:50,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189604078] [2022-04-28 06:06:50,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:50,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:50,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:50,182 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 06:06:50,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 06:06:50,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 06:06:50,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-28 06:06:50,221 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 06:06:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 06:06:50,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 06:06:50,243 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 06:06:50,243 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 06:06:50,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 06:06:50,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 06:06:50,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:50,467 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2] [2022-04-28 06:06:50,470 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 06:06:50,479 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 06:06:50,480 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-28 06:06:50,481 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 06:06:50,482 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 06:06:50,482 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 06:06:50,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 06:06:50 BoogieIcfgContainer [2022-04-28 06:06:50,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 06:06:50,491 INFO L158 Benchmark]: Toolchain (without parser) took 3089.54ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 143.1MB in the beginning and 143.2MB in the end (delta: -23.2kB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-04-28 06:06:50,491 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory was 159.5MB in the beginning and 159.4MB in the end (delta: 76.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 06:06:50,492 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.83ms. Allocated memory is still 191.9MB. Free memory was 142.9MB in the beginning and 167.9MB in the end (delta: -25.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 06:06:50,492 INFO L158 Benchmark]: Boogie Preprocessor took 33.60ms. Allocated memory is still 191.9MB. Free memory was 167.9MB in the beginning and 166.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 06:06:50,492 INFO L158 Benchmark]: RCFGBuilder took 296.18ms. Allocated memory is still 191.9MB. Free memory was 166.3MB in the beginning and 155.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 06:06:50,493 INFO L158 Benchmark]: TraceAbstraction took 2456.83ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 155.3MB in the beginning and 143.2MB in the end (delta: 12.2MB). Peak memory consumption was 51.8MB. Max. memory is 8.0GB. [2022-04-28 06:06:50,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory was 159.5MB in the beginning and 159.4MB in the end (delta: 76.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 288.83ms. Allocated memory is still 191.9MB. Free memory was 142.9MB in the beginning and 167.9MB in the end (delta: -25.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.60ms. Allocated memory is still 191.9MB. Free memory was 167.9MB in the beginning and 166.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 296.18ms. Allocated memory is still 191.9MB. Free memory was 166.3MB in the beginning and 155.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2456.83ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 155.3MB in the beginning and 143.2MB in the end (delta: 12.2MB). Peak memory consumption was 51.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 [L33] EXPR counter++ [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) [L36] COND TRUE !(c < k) [L45] x = x * (z - 1) [L47] CALL __VERIFIER_assert(1 + x - y == 0) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 58 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-28 06:06:50,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...