/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 13:55:09,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 13:55:09,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 13:55:09,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 13:55:09,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 13:55:09,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 13:55:09,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 13:55:09,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 13:55:09,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 13:55:09,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 13:55:09,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 13:55:09,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 13:55:09,730 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 13:55:09,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 13:55:09,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 13:55:09,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 13:55:09,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 13:55:09,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 13:55:09,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 13:55:09,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 13:55:09,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 13:55:09,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 13:55:09,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 13:55:09,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 13:55:09,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 13:55:09,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 13:55:09,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 13:55:09,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 13:55:09,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 13:55:09,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 13:55:09,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 13:55:09,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 13:55:09,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 13:55:09,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 13:55:09,760 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 13:55:09,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 13:55:09,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 13:55:09,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 13:55:09,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 13:55:09,954 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 13:55:09,959 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 13:55:09,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound1.c [2022-04-28 13:55:10,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63bba0eef/0e9ef3bca49d4e72ac7a42c5f2e13574/FLAG31e032a47 [2022-04-28 13:55:10,346 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 13:55:10,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound1.c [2022-04-28 13:55:10,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63bba0eef/0e9ef3bca49d4e72ac7a42c5f2e13574/FLAG31e032a47 [2022-04-28 13:55:10,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63bba0eef/0e9ef3bca49d4e72ac7a42c5f2e13574 [2022-04-28 13:55:10,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 13:55:10,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 13:55:10,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 13:55:10,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 13:55:10,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 13:55:10,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5618751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10, skipping insertion in model container [2022-04-28 13:55:10,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 13:55:10,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 13:55:10,913 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/mannadiv_unwindbound1.c[573,586] [2022-04-28 13:55:10,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 13:55:10,932 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 13:55:10,940 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/mannadiv_unwindbound1.c[573,586] [2022-04-28 13:55:10,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 13:55:10,952 INFO L208 MainTranslator]: Completed translation [2022-04-28 13:55:10,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10 WrapperNode [2022-04-28 13:55:10,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 13:55:10,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 13:55:10,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 13:55:10,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 13:55:10,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 13:55:10,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 13:55:10,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 13:55:10,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 13:55:10,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (1/1) ... [2022-04-28 13:55:10,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 13:55:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 13:55:11,006 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 13:55:11,007 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 13:55:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 13:55:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 13:55:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 13:55:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 13:55:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 13:55:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 13:55:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 13:55:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 13:55:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 13:55:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 13:55:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 13:55:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 13:55:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 13:55:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 13:55:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 13:55:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 13:55:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 13:55:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 13:55:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 13:55:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 13:55:11,091 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 13:55:11,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 13:55:11,231 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 13:55:11,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 13:55:11,236 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 13:55:11,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 01:55:11 BoogieIcfgContainer [2022-04-28 13:55:11,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 13:55:11,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 13:55:11,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 13:55:11,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 13:55:11,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 01:55:10" (1/3) ... [2022-04-28 13:55:11,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c81320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 01:55:11, skipping insertion in model container [2022-04-28 13:55:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 01:55:10" (2/3) ... [2022-04-28 13:55:11,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c81320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 01:55:11, skipping insertion in model container [2022-04-28 13:55:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 01:55:11" (3/3) ... [2022-04-28 13:55:11,243 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound1.c [2022-04-28 13:55:11,252 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 13:55:11,252 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 13:55:11,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 13:55:11,287 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@3451c21d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45852b51 [2022-04-28 13:55:11,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 13:55:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2022-04-28 13:55:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-28 13:55:11,297 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 13:55:11,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 13:55:11,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 13:55:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 13:55:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 1 times [2022-04-28 13:55:11,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:11,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1584601848] [2022-04-28 13:55:11,313 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 13:55:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 2 times [2022-04-28 13:55:11,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 13:55:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25570582] [2022-04-28 13:55:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 13:55:11,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 13:55:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 13:55:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 13:55:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 13:55:11,434 INFO L290 TraceCheckUtils]: 0: Hoare triple {46#(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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-28 13:55:11,434 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-28 13:55:11,434 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #67#return; {33#true} is VALID [2022-04-28 13:55:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 13:55:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 13:55:11,441 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 13:55:11,442 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 13:55:11,442 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 13:55:11,443 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {33#true} #59#return; {34#false} is VALID [2022-04-28 13:55:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-28 13:55:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 13:55:11,449 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 13:55:11,449 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 13:55:11,450 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 13:55:11,450 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {34#false} #61#return; {34#false} is VALID [2022-04-28 13:55:11,451 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {46#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 13:55:11,451 INFO L290 TraceCheckUtils]: 1: Hoare triple {46#(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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-28 13:55:11,451 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-28 13:55:11,451 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #67#return; {33#true} is VALID [2022-04-28 13:55:11,451 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret7 := main(); {33#true} is VALID [2022-04-28 13:55:11,452 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {33#true} is VALID [2022-04-28 13:55:11,452 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {33#true} is VALID [2022-04-28 13:55:11,452 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 13:55:11,452 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 13:55:11,453 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 13:55:11,453 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} #59#return; {34#false} is VALID [2022-04-28 13:55:11,453 INFO L272 TraceCheckUtils]: 11: Hoare triple {34#false} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {33#true} is VALID [2022-04-28 13:55:11,453 INFO L290 TraceCheckUtils]: 12: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 13:55:11,453 INFO L290 TraceCheckUtils]: 13: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 13:55:11,454 INFO L290 TraceCheckUtils]: 14: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 13:55:11,454 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {34#false} {34#false} #61#return; {34#false} is VALID [2022-04-28 13:55:11,454 INFO L290 TraceCheckUtils]: 16: Hoare triple {34#false} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {34#false} is VALID [2022-04-28 13:55:11,454 INFO L290 TraceCheckUtils]: 17: Hoare triple {34#false} assume !true; {34#false} is VALID [2022-04-28 13:55:11,454 INFO L272 TraceCheckUtils]: 18: Hoare triple {34#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {34#false} is VALID [2022-04-28 13:55:11,455 INFO L290 TraceCheckUtils]: 19: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2022-04-28 13:55:11,455 INFO L290 TraceCheckUtils]: 20: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2022-04-28 13:55:11,455 INFO L290 TraceCheckUtils]: 21: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-28 13:55:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 13:55:11,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 13:55:11,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25570582] [2022-04-28 13:55:11,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25570582] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 13:55:11,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 13:55:11,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 13:55:11,459 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 13:55:11,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1584601848] [2022-04-28 13:55:11,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1584601848] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 13:55:11,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 13:55:11,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 13:55:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061691195] [2022-04-28 13:55:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 13:55:11,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 22 [2022-04-28 13:55:11,464 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 13:55:11,466 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-04-28 13:55:11,485 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:11,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 13:55:11,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 13:55:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 13:55:11,501 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-04-28 13:55:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:11,584 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2022-04-28 13:55:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 13:55:11,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 22 [2022-04-28 13:55:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 13:55:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-04-28 13:55:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2022-04-28 13:55:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-04-28 13:55:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2022-04-28 13:55:11,593 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 72 transitions. [2022-04-28 13:55:11,653 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 72 edges. 72 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:11,659 INFO L225 Difference]: With dead ends: 54 [2022-04-28 13:55:11,659 INFO L226 Difference]: Without dead ends: 26 [2022-04-28 13:55:11,661 INFO L412 NwaCegarLoop]: 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 [2022-04-28 13:55:11,663 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 13:55:11,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 13:55:11,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-28 13:55:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-04-28 13:55:11,684 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 13:55:11,684 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-04-28 13:55:11,685 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-04-28 13:55:11,685 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-04-28 13:55:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:11,688 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-28 13:55:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-28 13:55:11,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:11,689 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:11,689 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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. [2022-04-28 13:55:11,689 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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. [2022-04-28 13:55:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:11,692 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-28 13:55:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-28 13:55:11,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:11,692 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:11,692 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 13:55:11,692 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 13:55:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-04-28 13:55:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-04-28 13:55:11,695 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-04-28 13:55:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 13:55:11,695 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-04-28 13:55:11,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-04-28 13:55:11,696 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 29 transitions. [2022-04-28 13:55:11,721 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-04-28 13:55:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 13:55:11,722 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 13:55:11,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 13:55:11,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 13:55:11,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 13:55:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 13:55:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 1 times [2022-04-28 13:55:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:11,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [968449999] [2022-04-28 13:55:11,724 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 13:55:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 2 times [2022-04-28 13:55:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 13:55:11,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237996534] [2022-04-28 13:55:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 13:55:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 13:55:11,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 13:55:11,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657854950] [2022-04-28 13:55:11,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 13:55:11,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 13:55:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 13:55:11,752 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 13:55:11,753 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 13:55:11,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 13:55:11,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 13:55:11,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 13:55:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 13:55:11,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 13:55:11,981 INFO L272 TraceCheckUtils]: 0: Hoare triple {259#true} call ULTIMATE.init(); {259#true} is VALID [2022-04-28 13:55:11,982 INFO L290 TraceCheckUtils]: 1: Hoare triple {259#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,983 INFO L290 TraceCheckUtils]: 2: Hoare triple {267#(<= ~counter~0 0)} assume true; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,984 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {267#(<= ~counter~0 0)} {259#true} #67#return; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,984 INFO L272 TraceCheckUtils]: 4: Hoare triple {267#(<= ~counter~0 0)} call #t~ret7 := main(); {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,984 INFO L290 TraceCheckUtils]: 5: Hoare triple {267#(<= ~counter~0 0)} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,985 INFO L272 TraceCheckUtils]: 6: Hoare triple {267#(<= ~counter~0 0)} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,985 INFO L290 TraceCheckUtils]: 7: Hoare triple {267#(<= ~counter~0 0)} ~cond := #in~cond; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,985 INFO L290 TraceCheckUtils]: 8: Hoare triple {267#(<= ~counter~0 0)} assume !(0 == ~cond); {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,986 INFO L290 TraceCheckUtils]: 9: Hoare triple {267#(<= ~counter~0 0)} assume true; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,986 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {267#(<= ~counter~0 0)} {267#(<= ~counter~0 0)} #59#return; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,987 INFO L272 TraceCheckUtils]: 11: Hoare triple {267#(<= ~counter~0 0)} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,987 INFO L290 TraceCheckUtils]: 12: Hoare triple {267#(<= ~counter~0 0)} ~cond := #in~cond; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,987 INFO L290 TraceCheckUtils]: 13: Hoare triple {267#(<= ~counter~0 0)} assume !(0 == ~cond); {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,988 INFO L290 TraceCheckUtils]: 14: Hoare triple {267#(<= ~counter~0 0)} assume true; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,988 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {267#(<= ~counter~0 0)} {267#(<= ~counter~0 0)} #61#return; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,989 INFO L290 TraceCheckUtils]: 16: Hoare triple {267#(<= ~counter~0 0)} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {267#(<= ~counter~0 0)} is VALID [2022-04-28 13:55:11,989 INFO L290 TraceCheckUtils]: 17: Hoare triple {267#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {316#(<= |main_#t~post6| 0)} is VALID [2022-04-28 13:55:11,990 INFO L290 TraceCheckUtils]: 18: Hoare triple {316#(<= |main_#t~post6| 0)} assume !(#t~post6 < 1);havoc #t~post6; {260#false} is VALID [2022-04-28 13:55:11,990 INFO L272 TraceCheckUtils]: 19: Hoare triple {260#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {260#false} is VALID [2022-04-28 13:55:11,990 INFO L290 TraceCheckUtils]: 20: Hoare triple {260#false} ~cond := #in~cond; {260#false} is VALID [2022-04-28 13:55:11,990 INFO L290 TraceCheckUtils]: 21: Hoare triple {260#false} assume 0 == ~cond; {260#false} is VALID [2022-04-28 13:55:11,990 INFO L290 TraceCheckUtils]: 22: Hoare triple {260#false} assume !false; {260#false} is VALID [2022-04-28 13:55:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 13:55:11,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 13:55:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 13:55:11,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237996534] [2022-04-28 13:55:11,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 13:55:11,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657854950] [2022-04-28 13:55:11,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657854950] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 13:55:11,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 13:55:11,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 13:55:11,992 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 13:55:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [968449999] [2022-04-28 13:55:11,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [968449999] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 13:55:11,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 13:55:11,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 13:55:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068903620] [2022-04-28 13:55:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 13:55:11,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 13:55:11,993 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 13:55:11,993 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 13:55:12,007 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 13:55:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 13:55:12,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 13:55:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 13:55:12,008 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 13:55:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:12,053 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-28 13:55:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 13:55:12,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 13:55:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 13:55:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 13:55:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 13:55:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 13:55:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 13:55:12,056 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-28 13:55:12,080 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:12,084 INFO L225 Difference]: With dead ends: 34 [2022-04-28 13:55:12,084 INFO L226 Difference]: Without dead ends: 27 [2022-04-28 13:55:12,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 13:55:12,085 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 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 13:55:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 13:55:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-28 13:55:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-28 13:55:12,099 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 13:55:12,100 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-04-28 13:55:12,100 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-04-28 13:55:12,101 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-04-28 13:55:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:12,104 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 13:55:12,104 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 13:55:12,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:12,105 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:12,105 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 27 states. [2022-04-28 13:55:12,107 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 27 states. [2022-04-28 13:55:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:12,110 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 13:55:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 13:55:12,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:12,115 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:12,115 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 13:55:12,115 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 13:55:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-04-28 13:55:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-04-28 13:55:12,117 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-04-28 13:55:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 13:55:12,117 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-04-28 13:55:12,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 13:55:12,117 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 31 transitions. [2022-04-28 13:55:12,141 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 13:55:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 13:55:12,142 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 13:55:12,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 13:55:12,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 13:55:12,355 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 13:55:12,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 13:55:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 13:55:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 245526874, now seen corresponding path program 1 times [2022-04-28 13:55:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [259809849] [2022-04-28 13:55:12,357 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 13:55:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash 245526874, now seen corresponding path program 2 times [2022-04-28 13:55:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 13:55:12,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419437443] [2022-04-28 13:55:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 13:55:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 13:55:12,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 13:55:12,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470895359] [2022-04-28 13:55:12,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 13:55:12,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 13:55:12,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 13:55:12,372 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 13:55:12,373 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 13:55:12,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 13:55:12,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 13:55:12,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-28 13:55:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 13:55:12,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 13:55:14,996 INFO L272 TraceCheckUtils]: 0: Hoare triple {507#true} call ULTIMATE.init(); {507#true} is VALID [2022-04-28 13:55:14,996 INFO L290 TraceCheckUtils]: 1: Hoare triple {507#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {507#true} is VALID [2022-04-28 13:55:14,996 INFO L290 TraceCheckUtils]: 2: Hoare triple {507#true} assume true; {507#true} is VALID [2022-04-28 13:55:14,996 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {507#true} {507#true} #67#return; {507#true} is VALID [2022-04-28 13:55:14,996 INFO L272 TraceCheckUtils]: 4: Hoare triple {507#true} call #t~ret7 := main(); {507#true} is VALID [2022-04-28 13:55:14,996 INFO L290 TraceCheckUtils]: 5: Hoare triple {507#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {507#true} is VALID [2022-04-28 13:55:14,997 INFO L272 TraceCheckUtils]: 6: Hoare triple {507#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {507#true} is VALID [2022-04-28 13:55:14,997 INFO L290 TraceCheckUtils]: 7: Hoare triple {507#true} ~cond := #in~cond; {507#true} is VALID [2022-04-28 13:55:14,997 INFO L290 TraceCheckUtils]: 8: Hoare triple {507#true} assume !(0 == ~cond); {507#true} is VALID [2022-04-28 13:55:14,997 INFO L290 TraceCheckUtils]: 9: Hoare triple {507#true} assume true; {507#true} is VALID [2022-04-28 13:55:14,997 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {507#true} {507#true} #59#return; {507#true} is VALID [2022-04-28 13:55:14,997 INFO L272 TraceCheckUtils]: 11: Hoare triple {507#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {507#true} is VALID [2022-04-28 13:55:14,997 INFO L290 TraceCheckUtils]: 12: Hoare triple {507#true} ~cond := #in~cond; {507#true} is VALID [2022-04-28 13:55:14,998 INFO L290 TraceCheckUtils]: 13: Hoare triple {507#true} assume !(0 == ~cond); {507#true} is VALID [2022-04-28 13:55:14,998 INFO L290 TraceCheckUtils]: 14: Hoare triple {507#true} assume true; {507#true} is VALID [2022-04-28 13:55:14,998 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {507#true} {507#true} #61#return; {507#true} is VALID [2022-04-28 13:55:14,998 INFO L290 TraceCheckUtils]: 16: Hoare triple {507#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-28 13:55:14,999 INFO L290 TraceCheckUtils]: 17: Hoare triple {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-28 13:55:14,999 INFO L290 TraceCheckUtils]: 18: Hoare triple {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} assume !!(#t~post6 < 1);havoc #t~post6; {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-28 13:55:15,000 INFO L272 TraceCheckUtils]: 19: Hoare triple {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {570#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 13:55:15,001 INFO L290 TraceCheckUtils]: 20: Hoare triple {570#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {574#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 13:55:15,001 INFO L290 TraceCheckUtils]: 21: Hoare triple {574#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {508#false} is VALID [2022-04-28 13:55:15,002 INFO L290 TraceCheckUtils]: 22: Hoare triple {508#false} assume !false; {508#false} is VALID [2022-04-28 13:55:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 13:55:15,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 13:55:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 13:55:15,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419437443] [2022-04-28 13:55:15,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 13:55:15,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470895359] [2022-04-28 13:55:15,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470895359] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 13:55:15,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 13:55:15,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 13:55:15,003 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 13:55:15,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [259809849] [2022-04-28 13:55:15,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [259809849] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 13:55:15,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 13:55:15,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 13:55:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755908231] [2022-04-28 13:55:15,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 13:55:15,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 23 [2022-04-28 13:55:15,004 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 13:55:15,004 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 13:55:15,020 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 13:55:15,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 13:55:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 13:55:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 13:55:15,043 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 13:55:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:15,158 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-04-28 13:55:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 13:55:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 23 [2022-04-28 13:55:15,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 13:55:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 13:55:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-28 13:55:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 13:55:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-28 13:55:15,161 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 43 transitions. [2022-04-28 13:55:15,192 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:15,193 INFO L225 Difference]: With dead ends: 37 [2022-04-28 13:55:15,193 INFO L226 Difference]: Without dead ends: 35 [2022-04-28 13:55:15,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 13:55:15,194 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 13:55:15,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 13:55:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-28 13:55:15,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-04-28 13:55:15,208 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 13:55:15,209 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 13:55:15,209 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 13:55:15,209 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 13:55:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:15,211 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-28 13:55:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-28 13:55:15,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:15,211 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:15,211 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 35 states. [2022-04-28 13:55:15,212 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 35 states. [2022-04-28 13:55:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:15,213 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-28 13:55:15,213 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-28 13:55:15,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:15,214 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:15,214 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 13:55:15,214 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 13:55:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 13:55:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-04-28 13:55:15,215 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-04-28 13:55:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 13:55:15,215 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-04-28 13:55:15,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 13:55:15,216 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 36 transitions. [2022-04-28 13:55:15,251 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-04-28 13:55:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-28 13:55:15,251 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 13:55:15,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 13:55:15,275 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 13:55:15,467 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 13:55:15,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 13:55:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 13:55:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1019533657, now seen corresponding path program 1 times [2022-04-28 13:55:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1311607226] [2022-04-28 13:55:15,469 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 13:55:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1019533657, now seen corresponding path program 2 times [2022-04-28 13:55:15,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 13:55:15,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905124279] [2022-04-28 13:55:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 13:55:15,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 13:55:15,484 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 13:55:15,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307952457] [2022-04-28 13:55:15,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 13:55:15,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 13:55:15,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 13:55:15,486 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 13:55:15,487 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 13:55:15,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 13:55:15,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 13:55:15,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-28 13:55:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 13:55:15,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 13:55:15,718 INFO L272 TraceCheckUtils]: 0: Hoare triple {790#true} call ULTIMATE.init(); {790#true} is VALID [2022-04-28 13:55:15,718 INFO L290 TraceCheckUtils]: 1: Hoare triple {790#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {790#true} is VALID [2022-04-28 13:55:15,718 INFO L290 TraceCheckUtils]: 2: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-28 13:55:15,718 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {790#true} {790#true} #67#return; {790#true} is VALID [2022-04-28 13:55:15,718 INFO L272 TraceCheckUtils]: 4: Hoare triple {790#true} call #t~ret7 := main(); {790#true} is VALID [2022-04-28 13:55:15,718 INFO L290 TraceCheckUtils]: 5: Hoare triple {790#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {790#true} is VALID [2022-04-28 13:55:15,719 INFO L272 TraceCheckUtils]: 6: Hoare triple {790#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {790#true} is VALID [2022-04-28 13:55:15,719 INFO L290 TraceCheckUtils]: 7: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-28 13:55:15,719 INFO L290 TraceCheckUtils]: 8: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-28 13:55:15,719 INFO L290 TraceCheckUtils]: 9: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-28 13:55:15,719 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {790#true} {790#true} #59#return; {790#true} is VALID [2022-04-28 13:55:15,719 INFO L272 TraceCheckUtils]: 11: Hoare triple {790#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {790#true} is VALID [2022-04-28 13:55:15,719 INFO L290 TraceCheckUtils]: 12: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-28 13:55:15,719 INFO L290 TraceCheckUtils]: 13: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-28 13:55:15,720 INFO L290 TraceCheckUtils]: 14: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-28 13:55:15,720 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {790#true} {790#true} #61#return; {790#true} is VALID [2022-04-28 13:55:15,720 INFO L290 TraceCheckUtils]: 16: Hoare triple {790#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {790#true} is VALID [2022-04-28 13:55:15,720 INFO L290 TraceCheckUtils]: 17: Hoare triple {790#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {790#true} is VALID [2022-04-28 13:55:15,720 INFO L290 TraceCheckUtils]: 18: Hoare triple {790#true} assume !!(#t~post6 < 1);havoc #t~post6; {790#true} is VALID [2022-04-28 13:55:15,720 INFO L272 TraceCheckUtils]: 19: Hoare triple {790#true} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {790#true} is VALID [2022-04-28 13:55:15,724 INFO L290 TraceCheckUtils]: 20: Hoare triple {790#true} ~cond := #in~cond; {855#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 13:55:15,724 INFO L290 TraceCheckUtils]: 21: Hoare triple {855#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 13:55:15,724 INFO L290 TraceCheckUtils]: 22: Hoare triple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 13:55:15,725 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} {790#true} #63#return; {866#(= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0)} is VALID [2022-04-28 13:55:15,727 INFO L290 TraceCheckUtils]: 24: Hoare triple {866#(= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0)} assume !(0 != ~y3~0); {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} is VALID [2022-04-28 13:55:15,728 INFO L272 TraceCheckUtils]: 25: Hoare triple {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {874#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 13:55:15,728 INFO L290 TraceCheckUtils]: 26: Hoare triple {874#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {878#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 13:55:15,728 INFO L290 TraceCheckUtils]: 27: Hoare triple {878#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {791#false} is VALID [2022-04-28 13:55:15,729 INFO L290 TraceCheckUtils]: 28: Hoare triple {791#false} assume !false; {791#false} is VALID [2022-04-28 13:55:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 13:55:15,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 13:55:20,297 INFO L290 TraceCheckUtils]: 28: Hoare triple {791#false} assume !false; {791#false} is VALID [2022-04-28 13:55:20,297 INFO L290 TraceCheckUtils]: 27: Hoare triple {878#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {791#false} is VALID [2022-04-28 13:55:20,298 INFO L290 TraceCheckUtils]: 26: Hoare triple {874#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {878#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 13:55:20,299 INFO L272 TraceCheckUtils]: 25: Hoare triple {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {874#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 13:55:20,299 INFO L290 TraceCheckUtils]: 24: Hoare triple {897#(or (not (= main_~y3~0 0)) (= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0))} assume !(0 != ~y3~0); {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} is VALID [2022-04-28 13:55:20,300 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} {790#true} #63#return; {897#(or (not (= main_~y3~0 0)) (= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0))} is VALID [2022-04-28 13:55:20,300 INFO L290 TraceCheckUtils]: 22: Hoare triple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 13:55:20,301 INFO L290 TraceCheckUtils]: 21: Hoare triple {910#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 13:55:20,301 INFO L290 TraceCheckUtils]: 20: Hoare triple {790#true} ~cond := #in~cond; {910#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 13:55:20,302 INFO L272 TraceCheckUtils]: 19: Hoare triple {790#true} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {790#true} is VALID [2022-04-28 13:55:20,302 INFO L290 TraceCheckUtils]: 18: Hoare triple {790#true} assume !!(#t~post6 < 1);havoc #t~post6; {790#true} is VALID [2022-04-28 13:55:20,303 INFO L290 TraceCheckUtils]: 17: Hoare triple {790#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {790#true} is VALID [2022-04-28 13:55:20,304 INFO L290 TraceCheckUtils]: 16: Hoare triple {790#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {790#true} is VALID [2022-04-28 13:55:20,305 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {790#true} {790#true} #61#return; {790#true} is VALID [2022-04-28 13:55:20,314 INFO L290 TraceCheckUtils]: 14: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-28 13:55:20,314 INFO L290 TraceCheckUtils]: 13: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-28 13:55:20,315 INFO L290 TraceCheckUtils]: 12: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-28 13:55:20,315 INFO L272 TraceCheckUtils]: 11: Hoare triple {790#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {790#true} is VALID [2022-04-28 13:55:20,315 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {790#true} {790#true} #59#return; {790#true} is VALID [2022-04-28 13:55:20,315 INFO L290 TraceCheckUtils]: 9: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-28 13:55:20,315 INFO L290 TraceCheckUtils]: 8: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-28 13:55:20,315 INFO L290 TraceCheckUtils]: 7: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-28 13:55:20,315 INFO L272 TraceCheckUtils]: 6: Hoare triple {790#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {790#true} is VALID [2022-04-28 13:55:20,315 INFO L290 TraceCheckUtils]: 5: Hoare triple {790#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {790#true} is VALID [2022-04-28 13:55:20,316 INFO L272 TraceCheckUtils]: 4: Hoare triple {790#true} call #t~ret7 := main(); {790#true} is VALID [2022-04-28 13:55:20,316 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {790#true} {790#true} #67#return; {790#true} is VALID [2022-04-28 13:55:20,316 INFO L290 TraceCheckUtils]: 2: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-28 13:55:20,316 INFO L290 TraceCheckUtils]: 1: Hoare triple {790#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {790#true} is VALID [2022-04-28 13:55:20,316 INFO L272 TraceCheckUtils]: 0: Hoare triple {790#true} call ULTIMATE.init(); {790#true} is VALID [2022-04-28 13:55:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 13:55:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 13:55:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905124279] [2022-04-28 13:55:20,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 13:55:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307952457] [2022-04-28 13:55:20,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307952457] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 13:55:20,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 13:55:20,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-28 13:55:20,317 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 13:55:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1311607226] [2022-04-28 13:55:20,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1311607226] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 13:55:20,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 13:55:20,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-28 13:55:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438241942] [2022-04-28 13:55:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 13:55:20,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-04-28 13:55:20,318 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 13:55:20,318 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 13:55:20,335 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:20,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-28 13:55:20,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-28 13:55:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-28 13:55:20,336 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 13:55:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:20,535 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-04-28 13:55:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 13:55:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-04-28 13:55:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 13:55:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 13:55:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-28 13:55:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 13:55:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-28 13:55:20,537 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 35 transitions. [2022-04-28 13:55:20,564 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:20,565 INFO L225 Difference]: With dead ends: 39 [2022-04-28 13:55:20,565 INFO L226 Difference]: Without dead ends: 34 [2022-04-28 13:55:20,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-28 13:55:20,566 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 13:55:20,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 103 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 13:55:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-28 13:55:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-04-28 13:55:20,596 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 13:55:20,596 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 13:55:20,596 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 13:55:20,596 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 13:55:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:20,598 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-28 13:55:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-28 13:55:20,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:20,598 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:20,599 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 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 34 states. [2022-04-28 13:55:20,599 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 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 34 states. [2022-04-28 13:55:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 13:55:20,600 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-28 13:55:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-28 13:55:20,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 13:55:20,600 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 13:55:20,600 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 13:55:20,601 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 13:55:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 13:55:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-04-28 13:55:20,602 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-04-28 13:55:20,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 13:55:20,602 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-04-28 13:55:20,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 13:55:20,602 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 31 transitions. [2022-04-28 13:55:20,644 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 13:55:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-04-28 13:55:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-28 13:55:20,645 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 13:55:20,645 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-04-28 13:55:20,662 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 13:55:20,860 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 13:55:20,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 13:55:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 13:55:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1080225052, now seen corresponding path program 1 times [2022-04-28 13:55:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 13:55:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [906961414] [2022-04-28 13:55:20,861 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 13:55:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1080225052, now seen corresponding path program 2 times [2022-04-28 13:55:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 13:55:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299843225] [2022-04-28 13:55:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 13:55:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 13:55:20,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 13:55:20,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110466343] [2022-04-28 13:55:20,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 13:55:20,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 13:55:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 13:55:20,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 13:55:20,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 13:55:20,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 13:55:20,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-28 13:55:20,921 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 13:55:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 13:55:20,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 13:55:20,944 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 13:55:20,944 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 13:55:20,945 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 13:55:20,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-28 13:55:21,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 13:55:21,158 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2] [2022-04-28 13:55:21,160 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 13:55:21,168 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 13:55:21,168 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 13:55:21,168 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 13:55:21,168 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 13:55:21,168 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2022-04-28 13:55:21,169 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L37-1 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L37-1 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L50 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-28 13:55:21,170 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 13:55:21,170 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 13:55:21,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 01:55:21 BoogieIcfgContainer [2022-04-28 13:55:21,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 13:55:21,173 INFO L158 Benchmark]: Toolchain (without parser) took 10393.05ms. Allocated memory was 211.8MB in the beginning and 303.0MB in the end (delta: 91.2MB). Free memory was 157.8MB in the beginning and 170.8MB in the end (delta: -13.0MB). Peak memory consumption was 79.3MB. Max. memory is 8.0GB. [2022-04-28 13:55:21,173 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 211.8MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 13:55:21,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.64ms. Allocated memory is still 211.8MB. Free memory was 157.6MB in the beginning and 187.6MB in the end (delta: -30.0MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-04-28 13:55:21,173 INFO L158 Benchmark]: Boogie Preprocessor took 28.91ms. Allocated memory is still 211.8MB. Free memory was 187.6MB in the beginning and 185.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 13:55:21,174 INFO L158 Benchmark]: RCFGBuilder took 255.14ms. Allocated memory is still 211.8MB. Free memory was 185.7MB in the beginning and 174.5MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 13:55:21,174 INFO L158 Benchmark]: TraceAbstraction took 9933.62ms. Allocated memory was 211.8MB in the beginning and 303.0MB in the end (delta: 91.2MB). Free memory was 173.9MB in the beginning and 170.8MB in the end (delta: 3.1MB). Peak memory consumption was 95.9MB. Max. memory is 8.0GB. [2022-04-28 13:55:21,175 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 0.12ms. Allocated memory is still 211.8MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.64ms. Allocated memory is still 211.8MB. Free memory was 157.6MB in the beginning and 187.6MB in the end (delta: -30.0MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.91ms. Allocated memory is still 211.8MB. Free memory was 187.6MB in the beginning and 185.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 255.14ms. Allocated memory is still 211.8MB. Free memory was 185.7MB in the beginning and 174.5MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 9933.62ms. Allocated memory was 211.8MB in the beginning and 303.0MB in the end (delta: 91.2MB). Free memory was 173.9MB in the beginning and 170.8MB in the end (delta: 3.1MB). Peak memory consumption was 95.9MB. 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] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(x1 >= 0) [L30] CALL assume_abort_if_not(x2 != 0) [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(x2 != 0) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 [L36] EXPR counter++ [L36] COND TRUE counter++<1 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L16] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 [L36] EXPR counter++ [L36] COND FALSE !(counter++<1) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 288 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 186 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 102 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 20, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 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 13:55:21,187 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...