/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 10:19:55,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 10:19:55,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 10:19:55,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 10:19:55,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 10:19:55,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 10:19:55,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 10:19:55,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 10:19:55,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 10:19:55,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 10:19:55,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 10:19:55,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 10:19:55,252 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 10:19:55,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 10:19:55,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 10:19:55,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 10:19:55,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 10:19:55,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-15 10:19:55,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 10:19:55,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 10:19:55,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 10:19:55,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-15 10:19:55,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 10:19:55,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 10:19:55,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 10:19:55,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 10:19:55,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 10:19:55,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 10:19:55,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 10:19:55,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 10:19:55,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 10:19:55,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 10:19:55,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 10:19:55,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 10:19:55,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 10:19:55,285 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 10:19:55,285 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 10:19:55,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 10:19:55,285 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 10:19:55,285 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 10:19:55,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 10:19:55,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 10:19:55,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 10:19:55,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 10:19:55,455 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 10:19:55,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound1.c [2022-04-15 10:19:55,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6740f0a/ad09244db5b947d3b97c94b1482a4d06/FLAGaba5b9d75 [2022-04-15 10:19:55,818 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 10:19:55,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound1.c [2022-04-15 10:19:55,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6740f0a/ad09244db5b947d3b97c94b1482a4d06/FLAGaba5b9d75 [2022-04-15 10:19:56,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6740f0a/ad09244db5b947d3b97c94b1482a4d06 [2022-04-15 10:19:56,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 10:19:56,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 10:19:56,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 10:19:56,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 10:19:56,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 10:19:56,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c1b0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56, skipping insertion in model container [2022-04-15 10:19:56,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 10:19:56,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 10:19:56,429 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_valuebound1.c[573,586] [2022-04-15 10:19:56,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 10:19:56,442 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 10:19:56,450 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_valuebound1.c[573,586] [2022-04-15 10:19:56,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 10:19:56,462 INFO L208 MainTranslator]: Completed translation [2022-04-15 10:19:56,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56 WrapperNode [2022-04-15 10:19:56,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 10:19:56,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 10:19:56,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 10:19:56,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 10:19:56,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 10:19:56,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 10:19:56,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 10:19:56,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 10:19:56,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (1/1) ... [2022-04-15 10:19:56,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 10:19:56,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 10:19:56,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-15 10:19:56,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-15 10:19:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 10:19:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 10:19:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 10:19:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 10:19:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 10:19:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 10:19:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 10:19:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 10:19:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 10:19:56,561 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 10:19:56,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 10:19:56,647 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 10:19:56,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 10:19:56,652 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 10:19:56,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 10:19:56 BoogieIcfgContainer [2022-04-15 10:19:56,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 10:19:56,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 10:19:56,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 10:19:56,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 10:19:56,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 10:19:56" (1/3) ... [2022-04-15 10:19:56,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102414f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 10:19:56, skipping insertion in model container [2022-04-15 10:19:56,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 10:19:56" (2/3) ... [2022-04-15 10:19:56,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102414f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 10:19:56, skipping insertion in model container [2022-04-15 10:19:56,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 10:19:56" (3/3) ... [2022-04-15 10:19:56,659 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound1.c [2022-04-15 10:19:56,662 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 10:19:56,662 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 10:19:56,687 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 10:19:56,691 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 10:19:56,692 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 10:19:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 10:19:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-15 10:19:56,707 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 10:19:56,708 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 10:19:56,708 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 10:19:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 10:19:56,711 INFO L85 PathProgramCache]: Analyzing trace with hash -786972844, now seen corresponding path program 1 times [2022-04-15 10:19:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 10:19:56,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1795814264] [2022-04-15 10:19:56,723 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 10:19:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash -786972844, now seen corresponding path program 2 times [2022-04-15 10:19:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 10:19:56,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596880537] [2022-04-15 10:19:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 10:19:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 10:19:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 10:19:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 10:19:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 10:19:56,868 INFO L290 TraceCheckUtils]: 0: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-15 10:19:56,868 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-15 10:19:56,868 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #66#return; {32#true} is VALID [2022-04-15 10:19:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-15 10:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 10:19:56,876 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-15 10:19:56,876 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-15 10:19:56,877 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-15 10:19:56,877 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {32#true} #58#return; {33#false} is VALID [2022-04-15 10:19:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-15 10:19:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 10:19:56,883 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-15 10:19:56,884 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-15 10:19:56,884 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-15 10:19:56,884 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {33#false} #60#return; {33#false} is VALID [2022-04-15 10:19:56,885 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 10:19:56,885 INFO L290 TraceCheckUtils]: 1: Hoare triple {45#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); {32#true} is VALID [2022-04-15 10:19:56,886 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-15 10:19:56,886 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #66#return; {32#true} is VALID [2022-04-15 10:19:56,886 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret6 := main(); {32#true} is VALID [2022-04-15 10:19:56,886 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#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; {32#true} is VALID [2022-04-15 10:19:56,886 INFO L272 TraceCheckUtils]: 6: Hoare triple {32#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {32#true} is VALID [2022-04-15 10:19:56,887 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-15 10:19:56,889 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-15 10:19:56,889 INFO L290 TraceCheckUtils]: 9: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-15 10:19:56,889 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {33#false} {32#true} #58#return; {33#false} is VALID [2022-04-15 10:19:56,889 INFO L272 TraceCheckUtils]: 11: Hoare triple {33#false} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {32#true} is VALID [2022-04-15 10:19:56,890 INFO L290 TraceCheckUtils]: 12: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-15 10:19:56,891 INFO L290 TraceCheckUtils]: 13: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-15 10:19:56,891 INFO L290 TraceCheckUtils]: 14: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-15 10:19:56,891 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {33#false} {33#false} #60#return; {33#false} is VALID [2022-04-15 10:19:56,891 INFO L290 TraceCheckUtils]: 16: Hoare triple {33#false} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {33#false} is VALID [2022-04-15 10:19:56,891 INFO L290 TraceCheckUtils]: 17: Hoare triple {33#false} assume !true; {33#false} is VALID [2022-04-15 10:19:56,892 INFO L272 TraceCheckUtils]: 18: Hoare triple {33#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {33#false} is VALID [2022-04-15 10:19:56,892 INFO L290 TraceCheckUtils]: 19: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2022-04-15 10:19:56,892 INFO L290 TraceCheckUtils]: 20: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2022-04-15 10:19:56,892 INFO L290 TraceCheckUtils]: 21: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-15 10:19:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 10:19:56,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 10:19:56,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596880537] [2022-04-15 10:19:56,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596880537] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 10:19:56,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 10:19:56,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 10:19:56,896 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 10:19:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1795814264] [2022-04-15 10:19:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1795814264] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 10:19:56,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 10:19:56,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 10:19:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949050393] [2022-04-15 10:19:56,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 10:19:56,900 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 [2022-04-15 10:19:56,901 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 10:19:56,906 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) [2022-04-15 10:19:56,941 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:19:56,942 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 10:19:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 10:19:56,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 10:19:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 10:19:56,966 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) [2022-04-15 10:19:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:19:57,094 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-04-15 10:19:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 10:19:57,094 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 [2022-04-15 10:19:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 10:19:57,096 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) [2022-04-15 10:19:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2022-04-15 10:19:57,107 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) [2022-04-15 10:19:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2022-04-15 10:19:57,114 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 68 transitions. [2022-04-15 10:19:57,186 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:19:57,192 INFO L225 Difference]: With dead ends: 51 [2022-04-15 10:19:57,192 INFO L226 Difference]: Without dead ends: 24 [2022-04-15 10:19:57,194 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 10:19:57,197 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 10:19:57,198 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 10:19:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-15 10:19:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-15 10:19:57,222 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 10:19:57,223 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 10:19:57,223 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 10:19:57,224 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 10:19:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:19:57,226 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-04-15 10:19:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-15 10:19:57,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 10:19:57,226 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 10:19:57,227 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 24 states. [2022-04-15 10:19:57,227 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 24 states. [2022-04-15 10:19:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:19:57,229 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-04-15 10:19:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-15 10:19:57,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 10:19:57,229 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 10:19:57,229 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 10:19:57,229 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 10:19:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 10:19:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-04-15 10:19:57,231 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-04-15 10:19:57,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 10:19:57,232 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-04-15 10:19:57,232 INFO L479 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) [2022-04-15 10:19:57,232 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 24 states and 27 transitions. [2022-04-15 10:19:57,255 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:19:57,255 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-15 10:19:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-15 10:19:57,255 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 10:19:57,256 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 10:19:57,256 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 10:19:57,256 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 10:19:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 10:19:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1131020600, now seen corresponding path program 1 times [2022-04-15 10:19:57,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 10:19:57,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1218730355] [2022-04-15 10:19:57,257 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 10:19:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1131020600, now seen corresponding path program 2 times [2022-04-15 10:19:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 10:19:57,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059537746] [2022-04-15 10:19:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 10:19:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 10:19:57,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 10:19:57,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301636622] [2022-04-15 10:19:57,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 10:19:57,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 10:19:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 10:19:57,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 10:19:57,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 10:19:57,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 10:19:57,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 10:19:57,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 10:19:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 10:19:57,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 10:19:57,437 INFO L272 TraceCheckUtils]: 0: Hoare triple {246#true} call ULTIMATE.init(); {246#true} is VALID [2022-04-15 10:19:57,438 INFO L290 TraceCheckUtils]: 1: Hoare triple {246#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); {246#true} is VALID [2022-04-15 10:19:57,438 INFO L290 TraceCheckUtils]: 2: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-15 10:19:57,438 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {246#true} {246#true} #66#return; {246#true} is VALID [2022-04-15 10:19:57,438 INFO L272 TraceCheckUtils]: 4: Hoare triple {246#true} call #t~ret6 := main(); {246#true} is VALID [2022-04-15 10:19:57,438 INFO L290 TraceCheckUtils]: 5: Hoare triple {246#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; {246#true} is VALID [2022-04-15 10:19:57,439 INFO L272 TraceCheckUtils]: 6: Hoare triple {246#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {246#true} is VALID [2022-04-15 10:19:57,439 INFO L290 TraceCheckUtils]: 7: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-15 10:19:57,439 INFO L290 TraceCheckUtils]: 8: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-15 10:19:57,439 INFO L290 TraceCheckUtils]: 9: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-15 10:19:57,439 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {246#true} {246#true} #58#return; {246#true} is VALID [2022-04-15 10:19:57,439 INFO L272 TraceCheckUtils]: 11: Hoare triple {246#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {246#true} is VALID [2022-04-15 10:19:57,439 INFO L290 TraceCheckUtils]: 12: Hoare triple {246#true} ~cond := #in~cond; {246#true} is VALID [2022-04-15 10:19:57,440 INFO L290 TraceCheckUtils]: 13: Hoare triple {246#true} assume !(0 == ~cond); {246#true} is VALID [2022-04-15 10:19:57,440 INFO L290 TraceCheckUtils]: 14: Hoare triple {246#true} assume true; {246#true} is VALID [2022-04-15 10:19:57,440 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {246#true} {246#true} #60#return; {246#true} is VALID [2022-04-15 10:19:57,440 INFO L290 TraceCheckUtils]: 16: Hoare triple {246#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {299#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-15 10:19:57,441 INFO L290 TraceCheckUtils]: 17: Hoare triple {299#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} assume !false; {299#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-15 10:19:57,442 INFO L272 TraceCheckUtils]: 18: Hoare triple {299#(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)); {306#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 10:19:57,442 INFO L290 TraceCheckUtils]: 19: Hoare triple {306#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {310#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 10:19:57,443 INFO L290 TraceCheckUtils]: 20: Hoare triple {310#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {247#false} is VALID [2022-04-15 10:19:57,443 INFO L290 TraceCheckUtils]: 21: Hoare triple {247#false} assume !false; {247#false} is VALID [2022-04-15 10:19:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 10:19:57,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 10:19:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 10:19:57,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059537746] [2022-04-15 10:19:57,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 10:19:57,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301636622] [2022-04-15 10:19:57,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301636622] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 10:19:57,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 10:19:57,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 10:19:57,445 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 10:19:57,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1218730355] [2022-04-15 10:19:57,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1218730355] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 10:19:57,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 10:19:57,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 10:19:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527837951] [2022-04-15 10:19:57,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 10:19:57,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 22 [2022-04-15 10:19:57,446 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 10:19:57,446 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 10:19:57,458 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:19:57,459 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 10:19:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 10:19:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 10:19:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 10:19:57,460 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 10:19:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:19:57,552 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-04-15 10:19:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 10:19:57,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 22 [2022-04-15 10:19:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 10:19:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 10:19:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-15 10:19:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 10:19:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-15 10:19:57,555 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 40 transitions. [2022-04-15 10:19:57,581 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:19:57,582 INFO L225 Difference]: With dead ends: 35 [2022-04-15 10:19:57,582 INFO L226 Difference]: Without dead ends: 33 [2022-04-15 10:19:57,583 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 10:19:57,583 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 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 [2022-04-15 10:19:57,584 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 10:19:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-15 10:19:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-04-15 10:19:57,592 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 10:19:57,592 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-04-15 10:19:57,593 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-04-15 10:19:57,593 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-04-15 10:19:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:19:57,595 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-04-15 10:19:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-04-15 10:19:57,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 10:19:57,595 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 10:19:57,600 INFO L74 IsIncluded]: Start isIncluded. First operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 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 33 states. [2022-04-15 10:19:57,602 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 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 33 states. [2022-04-15 10:19:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:19:57,607 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-04-15 10:19:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-04-15 10:19:57,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 10:19:57,636 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 10:19:57,636 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 10:19:57,636 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 10:19:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-04-15 10:19:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-04-15 10:19:57,638 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2022-04-15 10:19:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 10:19:57,638 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-04-15 10:19:57,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 10:19:57,638 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 33 transitions. [2022-04-15 10:19:57,676 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:19:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-04-15 10:19:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-15 10:19:57,677 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 10:19:57,677 INFO L499 BasicCegarLoop]: 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] [2022-04-15 10:19:57,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 10:19:57,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 10:19:57,891 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 10:19:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 10:19:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1991967029, now seen corresponding path program 1 times [2022-04-15 10:19:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 10:19:57,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [35167766] [2022-04-15 10:19:57,893 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 10:19:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1991967029, now seen corresponding path program 2 times [2022-04-15 10:19:57,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 10:19:57,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299948320] [2022-04-15 10:19:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 10:19:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 10:19:57,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 10:19:57,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374427198] [2022-04-15 10:19:57,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 10:19:57,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 10:19:57,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 10:19:57,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 10:19:57,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 10:19:57,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 10:19:57,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 10:19:57,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-15 10:19:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 10:19:57,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 10:19:58,105 INFO L272 TraceCheckUtils]: 0: Hoare triple {514#true} call ULTIMATE.init(); {514#true} is VALID [2022-04-15 10:19:58,105 INFO L290 TraceCheckUtils]: 1: Hoare triple {514#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); {514#true} is VALID [2022-04-15 10:19:58,105 INFO L290 TraceCheckUtils]: 2: Hoare triple {514#true} assume true; {514#true} is VALID [2022-04-15 10:19:58,105 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {514#true} {514#true} #66#return; {514#true} is VALID [2022-04-15 10:19:58,106 INFO L272 TraceCheckUtils]: 4: Hoare triple {514#true} call #t~ret6 := main(); {514#true} is VALID [2022-04-15 10:19:58,106 INFO L290 TraceCheckUtils]: 5: Hoare triple {514#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; {514#true} is VALID [2022-04-15 10:19:58,106 INFO L272 TraceCheckUtils]: 6: Hoare triple {514#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {514#true} is VALID [2022-04-15 10:19:58,106 INFO L290 TraceCheckUtils]: 7: Hoare triple {514#true} ~cond := #in~cond; {514#true} is VALID [2022-04-15 10:19:58,106 INFO L290 TraceCheckUtils]: 8: Hoare triple {514#true} assume !(0 == ~cond); {514#true} is VALID [2022-04-15 10:19:58,106 INFO L290 TraceCheckUtils]: 9: Hoare triple {514#true} assume true; {514#true} is VALID [2022-04-15 10:19:58,106 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {514#true} {514#true} #58#return; {514#true} is VALID [2022-04-15 10:19:58,107 INFO L272 TraceCheckUtils]: 11: Hoare triple {514#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {514#true} is VALID [2022-04-15 10:19:58,107 INFO L290 TraceCheckUtils]: 12: Hoare triple {514#true} ~cond := #in~cond; {514#true} is VALID [2022-04-15 10:19:58,107 INFO L290 TraceCheckUtils]: 13: Hoare triple {514#true} assume !(0 == ~cond); {514#true} is VALID [2022-04-15 10:19:58,107 INFO L290 TraceCheckUtils]: 14: Hoare triple {514#true} assume true; {514#true} is VALID [2022-04-15 10:19:58,107 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {514#true} {514#true} #60#return; {514#true} is VALID [2022-04-15 10:19:58,107 INFO L290 TraceCheckUtils]: 16: Hoare triple {514#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {514#true} is VALID [2022-04-15 10:19:58,107 INFO L290 TraceCheckUtils]: 17: Hoare triple {514#true} assume !false; {514#true} is VALID [2022-04-15 10:19:58,107 INFO L272 TraceCheckUtils]: 18: Hoare triple {514#true} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {514#true} is VALID [2022-04-15 10:19:58,108 INFO L290 TraceCheckUtils]: 19: Hoare triple {514#true} ~cond := #in~cond; {576#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-15 10:19:58,108 INFO L290 TraceCheckUtils]: 20: Hoare triple {576#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {580#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 10:19:58,108 INFO L290 TraceCheckUtils]: 21: Hoare triple {580#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {580#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 10:19:58,109 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {580#(not (= |__VERIFIER_assert_#in~cond| 0))} {514#true} #62#return; {587#(= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0)} is VALID [2022-04-15 10:19:58,110 INFO L290 TraceCheckUtils]: 23: Hoare triple {587#(= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0)} assume !(0 != ~y3~0); {591#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} is VALID [2022-04-15 10:19:58,110 INFO L272 TraceCheckUtils]: 24: Hoare triple {591#(= (+ (* 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)); {595#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 10:19:58,111 INFO L290 TraceCheckUtils]: 25: Hoare triple {595#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {599#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 10:19:58,111 INFO L290 TraceCheckUtils]: 26: Hoare triple {599#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {515#false} is VALID [2022-04-15 10:19:58,111 INFO L290 TraceCheckUtils]: 27: Hoare triple {515#false} assume !false; {515#false} is VALID [2022-04-15 10:19:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 10:19:58,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 10:20:02,775 INFO L290 TraceCheckUtils]: 27: Hoare triple {515#false} assume !false; {515#false} is VALID [2022-04-15 10:20:02,778 INFO L290 TraceCheckUtils]: 26: Hoare triple {599#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {515#false} is VALID [2022-04-15 10:20:02,778 INFO L290 TraceCheckUtils]: 25: Hoare triple {595#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {599#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 10:20:02,779 INFO L272 TraceCheckUtils]: 24: Hoare triple {591#(= (+ (* 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)); {595#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 10:20:02,779 INFO L290 TraceCheckUtils]: 23: Hoare triple {618#(or (not (= main_~y3~0 0)) (= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0))} assume !(0 != ~y3~0); {591#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} is VALID [2022-04-15 10:20:02,780 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {580#(not (= |__VERIFIER_assert_#in~cond| 0))} {514#true} #62#return; {618#(or (not (= main_~y3~0 0)) (= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0))} is VALID [2022-04-15 10:20:02,781 INFO L290 TraceCheckUtils]: 21: Hoare triple {580#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {580#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 10:20:02,781 INFO L290 TraceCheckUtils]: 20: Hoare triple {631#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {580#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 10:20:02,781 INFO L290 TraceCheckUtils]: 19: Hoare triple {514#true} ~cond := #in~cond; {631#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 10:20:02,782 INFO L272 TraceCheckUtils]: 18: Hoare triple {514#true} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {514#true} is VALID [2022-04-15 10:20:02,782 INFO L290 TraceCheckUtils]: 17: Hoare triple {514#true} assume !false; {514#true} is VALID [2022-04-15 10:20:02,782 INFO L290 TraceCheckUtils]: 16: Hoare triple {514#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {514#true} is VALID [2022-04-15 10:20:02,782 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {514#true} {514#true} #60#return; {514#true} is VALID [2022-04-15 10:20:02,782 INFO L290 TraceCheckUtils]: 14: Hoare triple {514#true} assume true; {514#true} is VALID [2022-04-15 10:20:02,782 INFO L290 TraceCheckUtils]: 13: Hoare triple {514#true} assume !(0 == ~cond); {514#true} is VALID [2022-04-15 10:20:02,782 INFO L290 TraceCheckUtils]: 12: Hoare triple {514#true} ~cond := #in~cond; {514#true} is VALID [2022-04-15 10:20:02,782 INFO L272 TraceCheckUtils]: 11: Hoare triple {514#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {514#true} is VALID [2022-04-15 10:20:02,783 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {514#true} {514#true} #58#return; {514#true} is VALID [2022-04-15 10:20:02,783 INFO L290 TraceCheckUtils]: 9: Hoare triple {514#true} assume true; {514#true} is VALID [2022-04-15 10:20:02,783 INFO L290 TraceCheckUtils]: 8: Hoare triple {514#true} assume !(0 == ~cond); {514#true} is VALID [2022-04-15 10:20:02,783 INFO L290 TraceCheckUtils]: 7: Hoare triple {514#true} ~cond := #in~cond; {514#true} is VALID [2022-04-15 10:20:02,783 INFO L272 TraceCheckUtils]: 6: Hoare triple {514#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {514#true} is VALID [2022-04-15 10:20:02,783 INFO L290 TraceCheckUtils]: 5: Hoare triple {514#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; {514#true} is VALID [2022-04-15 10:20:02,783 INFO L272 TraceCheckUtils]: 4: Hoare triple {514#true} call #t~ret6 := main(); {514#true} is VALID [2022-04-15 10:20:02,784 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {514#true} {514#true} #66#return; {514#true} is VALID [2022-04-15 10:20:02,784 INFO L290 TraceCheckUtils]: 2: Hoare triple {514#true} assume true; {514#true} is VALID [2022-04-15 10:20:02,784 INFO L290 TraceCheckUtils]: 1: Hoare triple {514#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); {514#true} is VALID [2022-04-15 10:20:02,784 INFO L272 TraceCheckUtils]: 0: Hoare triple {514#true} call ULTIMATE.init(); {514#true} is VALID [2022-04-15 10:20:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 10:20:02,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 10:20:02,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299948320] [2022-04-15 10:20:02,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 10:20:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374427198] [2022-04-15 10:20:02,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374427198] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 10:20:02,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-15 10:20:02,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-15 10:20:02,785 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 10:20:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [35167766] [2022-04-15 10:20:02,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [35167766] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 10:20:02,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 10:20:02,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-15 10:20:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108788879] [2022-04-15 10:20:02,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 10:20:02,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 28 [2022-04-15 10:20:02,786 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 10:20:02,786 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-04-15 10:20:02,817 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:20:02,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-15 10:20:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 10:20:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-15 10:20:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-15 10:20:02,819 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-04-15 10:20:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:20:02,984 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-15 10:20:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 10:20:02,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 28 [2022-04-15 10:20:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 10:20:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-04-15 10:20:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 27 transitions. [2022-04-15 10:20:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-04-15 10:20:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 27 transitions. [2022-04-15 10:20:02,986 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 27 transitions. [2022-04-15 10:20:03,009 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:20:03,009 INFO L225 Difference]: With dead ends: 30 [2022-04-15 10:20:03,009 INFO L226 Difference]: Without dead ends: 0 [2022-04-15 10:20:03,010 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-15 10:20:03,011 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 10:20:03,011 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 10:20:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-15 10:20:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-15 10:20:03,012 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 10:20:03,012 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 10:20:03,012 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 10:20:03,012 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 10:20:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:20:03,012 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 10:20:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 10:20:03,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 10:20:03,012 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 10:20:03,012 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 10:20:03,012 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 10:20:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 10:20:03,012 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 10:20:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 10:20:03,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 10:20:03,013 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 10:20:03,013 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 10:20:03,013 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 10:20:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 10:20:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-15 10:20:03,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-04-15 10:20:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 10:20:03,013 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-15 10:20:03,013 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-04-15 10:20:03,013 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-15 10:20:03,013 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 10:20:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 10:20:03,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 10:20:03,018 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 10:20:03,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 10:20:03,230 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-15 10:20:03,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-15 10:20:03,321 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2022-04-15 10:20:03,321 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2022-04-15 10:20:03,321 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2022-04-15 10:20:03,321 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-04-15 10:20:03,321 INFO L885 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: true [2022-04-15 10:20:03,321 INFO L885 garLoopResultBuilder]: At program point L13-2(lines 12 14) the Hoare annotation is: true [2022-04-15 10:20:03,321 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 12 14) the Hoare annotation is: true [2022-04-15 10:20:03,321 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (* main_~x2~0 main_~y1~0))) (and (= (+ .cse0 main_~y3~0 main_~y2~0) main_~x1~0) (= (+ .cse0 main_~y2~0) main_~x1~0))) [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 51) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 51) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L878 garLoopResultBuilder]: At program point L40(lines 40 47) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-04-15 10:20:03,322 INFO L878 garLoopResultBuilder]: At program point L40-2(lines 35 48) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-04-15 10:20:03,322 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-04-15 10:20:03,322 INFO L878 garLoopResultBuilder]: At program point L36-1(lines 35 48) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 51) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-15 10:20:03,322 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-15 10:20:03,322 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-15 10:20:03,323 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-15 10:20:03,323 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-15 10:20:03,323 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-15 10:20:03,323 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-15 10:20:03,323 INFO L878 garLoopResultBuilder]: At program point L17(lines 17 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-15 10:20:03,323 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-15 10:20:03,323 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-04-15 10:20:03,323 INFO L878 garLoopResultBuilder]: At program point L16-2(lines 15 21) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-15 10:20:03,323 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 15 21) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-15 10:20:03,323 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-15 10:20:03,325 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-15 10:20:03,326 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 10:20:03,328 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 10:20:03,329 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 10:20:03,336 INFO L163 areAnnotationChecker]: CFG has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 10:20:03,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 10:20:03 BoogieIcfgContainer [2022-04-15 10:20:03,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 10:20:03,344 INFO L158 Benchmark]: Toolchain (without parser) took 7074.64ms. Allocated memory was 176.2MB in the beginning and 226.5MB in the end (delta: 50.3MB). Free memory was 124.7MB in the beginning and 114.5MB in the end (delta: 10.2MB). Peak memory consumption was 58.9MB. Max. memory is 8.0GB. [2022-04-15 10:20:03,344 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory was 141.0MB in the beginning and 140.9MB in the end (delta: 74.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 10:20:03,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.95ms. Allocated memory was 176.2MB in the beginning and 226.5MB in the end (delta: 50.3MB). Free memory was 124.4MB in the beginning and 203.4MB in the end (delta: -79.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-15 10:20:03,346 INFO L158 Benchmark]: Boogie Preprocessor took 17.18ms. Allocated memory is still 226.5MB. Free memory was 203.4MB in the beginning and 201.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-15 10:20:03,346 INFO L158 Benchmark]: RCFGBuilder took 173.35ms. Allocated memory is still 226.5MB. Free memory was 201.9MB in the beginning and 190.2MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-15 10:20:03,348 INFO L158 Benchmark]: TraceAbstraction took 6688.68ms. Allocated memory is still 226.5MB. Free memory was 189.8MB in the beginning and 114.5MB in the end (delta: 75.3MB). Peak memory consumption was 74.7MB. Max. memory is 8.0GB. [2022-04-15 10:20:03,349 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 0.10ms. Allocated memory is still 176.2MB. Free memory was 141.0MB in the beginning and 140.9MB in the end (delta: 74.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.95ms. Allocated memory was 176.2MB in the beginning and 226.5MB in the end (delta: 50.3MB). Free memory was 124.4MB in the beginning and 203.4MB in the end (delta: -79.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.18ms. Allocated memory is still 226.5MB. Free memory was 203.4MB in the beginning and 201.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 173.35ms. Allocated memory is still 226.5MB. Free memory was 201.9MB in the beginning and 190.2MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 6688.68ms. Allocated memory is still 226.5MB. Free memory was 189.8MB in the beginning and 114.5MB in the end (delta: 75.3MB). Peak memory consumption was 74.7MB. 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 207 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 67 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 61 PreInvPairs, 87 NumberOfFragments, 105 HoareAnnotationTreeSize, 61 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 98 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: x2 * y1 + y3 + y2 == x1 - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-15 10:20:03,362 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...