/usr/bin/java -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 18:10:38,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 18:10:38,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 18:10:38,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 18:10:38,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 18:10:38,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 18:10:38,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 18:10:38,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-14 18:10:38,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 18:10:38,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 18:10:38,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-14 18:10:38,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-14 18:10:38,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-14 18:10:38,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-14 18:10:38,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-14 18:10:38,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-14 18:10:38,600 INFO L138 SettingsManager]: * Use SBE=true [2022-02-14 18:10:38,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 18:10:38,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 18:10:38,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 18:10:38,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 18:10:38,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 18:10:38,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 18:10:38,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 18:10:38,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-14 18:10:38,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 18:10:38,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 18:10:38,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 18:10:38,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 18:10:38,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 18:10:38,825 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 18:10:38,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_valuebound2.c [2022-02-14 18:10:38,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dbbe9fb/fa6c4aae1e46405387fb0769ce915995/FLAG51be2d089 [2022-02-14 18:10:39,230 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 18:10:39,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire2_valuebound2.c [2022-02-14 18:10:39,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dbbe9fb/fa6c4aae1e46405387fb0769ce915995/FLAG51be2d089 [2022-02-14 18:10:39,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dbbe9fb/fa6c4aae1e46405387fb0769ce915995 [2022-02-14 18:10:39,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 18:10:39,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-14 18:10:39,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 18:10:39,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 18:10:39,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 18:10:39,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a83db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39, skipping insertion in model container [2022-02-14 18:10:39,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 18:10:39,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 18:10:39,398 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/freire2_valuebound2.c[709,722] [2022-02-14 18:10:39,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 18:10:39,415 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 18:10:39,424 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/freire2_valuebound2.c[709,722] [2022-02-14 18:10:39,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 18:10:39,440 INFO L208 MainTranslator]: Completed translation [2022-02-14 18:10:39,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39 WrapperNode [2022-02-14 18:10:39,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 18:10:39,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 18:10:39,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 18:10:39,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 18:10:39,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 18:10:39,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 18:10:39,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 18:10:39,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 18:10:39,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (1/1) ... [2022-02-14 18:10:39,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 18:10:39,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 18:10:39,484 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) [2022-02-14 18:10:39,486 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 [2022-02-14 18:10:39,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 18:10:39,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 18:10:39,510 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 18:10:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 18:10:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 18:10:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 18:10:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 18:10:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 18:10:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 18:10:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 18:10:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 18:10:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 18:10:39,560 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 18:10:39,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 18:10:39,640 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 18:10:39,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 18:10:39,644 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 18:10:39,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 06:10:39 BoogieIcfgContainer [2022-02-14 18:10:39,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 18:10:39,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 18:10:39,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 18:10:39,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 18:10:39,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 06:10:39" (1/3) ... [2022-02-14 18:10:39,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c845f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 06:10:39, skipping insertion in model container [2022-02-14 18:10:39,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 06:10:39" (2/3) ... [2022-02-14 18:10:39,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c845f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 06:10:39, skipping insertion in model container [2022-02-14 18:10:39,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 06:10:39" (3/3) ... [2022-02-14 18:10:39,651 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2022-02-14 18:10:39,654 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-14 18:10:39,655 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 18:10:39,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 18:10:39,690 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 18:10:39,690 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 18:10:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-14 18:10:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-14 18:10:39,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 18:10:39,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 18:10:39,706 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 18:10:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 18:10:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash 326851384, now seen corresponding path program 1 times [2022-02-14 18:10:39,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 18:10:39,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977821436] [2022-02-14 18:10:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 18:10:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 18:10:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 18:10:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 18:10:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 18:10:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 18:10:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 18:10:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 18:10:39,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 18:10:39,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977821436] [2022-02-14 18:10:39,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977821436] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 18:10:39,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 18:10:39,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 18:10:39,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45392967] [2022-02-14 18:10:39,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 18:10:39,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 18:10:39,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 18:10:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 18:10:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 18:10:39,956 INFO L87 Difference]: Start difference. First operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-14 18:10:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 18:10:40,037 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2022-02-14 18:10:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 18:10:40,040 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-02-14 18:10:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 18:10:40,045 INFO L225 Difference]: With dead ends: 53 [2022-02-14 18:10:40,045 INFO L226 Difference]: Without dead ends: 26 [2022-02-14 18:10:40,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 18:10:40,052 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 18:10:40,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 18:10:40,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-14 18:10:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-14 18:10:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-14 18:10:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-02-14 18:10:40,080 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2022-02-14 18:10:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 18:10:40,080 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-02-14 18:10:40,081 INFO L471 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-14 18:10:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-02-14 18:10:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-14 18:10:40,082 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 18:10:40,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 18:10:40,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 18:10:40,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 18:10:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 18:10:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1008578050, now seen corresponding path program 1 times [2022-02-14 18:10:40,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 18:10:40,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103318447] [2022-02-14 18:10:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 18:10:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 18:10:40,098 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 18:10:40,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368908866] [2022-02-14 18:10:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 18:10:40,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 18:10:40,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 18:10:40,120 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) [2022-02-14 18:10:40,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 18:10:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 18:10:40,187 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-14 18:10:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 18:10:40,208 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-14 18:10:40,209 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-14 18:10:40,210 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 18:10:40,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-14 18:10:40,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 18:10:40,433 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-14 18:10:40,436 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 18:10:40,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 06:10:40 BoogieIcfgContainer [2022-02-14 18:10:40,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 18:10:40,450 INFO L158 Benchmark]: Toolchain (without parser) took 1204.10ms. Allocated memory was 202.4MB in the beginning and 342.9MB in the end (delta: 140.5MB). Free memory was 146.2MB in the beginning and 269.4MB in the end (delta: -123.2MB). Peak memory consumption was 16.7MB. Max. memory is 8.0GB. [2022-02-14 18:10:40,451 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 202.4MB. Free memory is still 162.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 18:10:40,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.90ms. Allocated memory was 202.4MB in the beginning and 342.9MB in the end (delta: 140.5MB). Free memory was 146.1MB in the beginning and 311.8MB in the end (delta: -165.7MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-02-14 18:10:40,451 INFO L158 Benchmark]: Boogie Preprocessor took 19.69ms. Allocated memory is still 342.9MB. Free memory was 311.8MB in the beginning and 310.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 18:10:40,452 INFO L158 Benchmark]: RCFGBuilder took 184.41ms. Allocated memory is still 342.9MB. Free memory was 310.3MB in the beginning and 300.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 18:10:40,452 INFO L158 Benchmark]: TraceAbstraction took 803.24ms. Allocated memory is still 342.9MB. Free memory was 299.6MB in the beginning and 269.4MB in the end (delta: 30.3MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-02-14 18:10:40,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 202.4MB. Free memory is still 162.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.90ms. Allocated memory was 202.4MB in the beginning and 342.9MB in the end (delta: 140.5MB). Free memory was 146.1MB in the beginning and 311.8MB in the end (delta: -165.7MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.69ms. Allocated memory is still 342.9MB. Free memory was 311.8MB in the beginning and 310.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 184.41ms. Allocated memory is still 342.9MB. Free memory was 310.3MB in the beginning and 300.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 803.24ms. Allocated memory is still 342.9MB. Free memory was 299.6MB in the beginning and 269.4MB in the end (delta: 30.3MB). Peak memory consumption was 30.4MB. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=2) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=2) VAL [a=2] [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L33] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 29 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-14 18:10:40,478 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...