/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:36:37,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:36:37,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:36:37,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:36:37,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:36:37,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:36:37,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:36:37,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:36:37,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:36:37,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:36:37,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:36:37,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:36:37,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:36:37,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:36:37,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:36:37,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:36:37,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:36:37,216 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 [2023-03-31 00:36:37,239 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:36:37,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:36:37,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:36:37,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:36:37,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:36:37,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:36:37,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:36:37,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:36:37,241 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:36:37,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:36:37,242 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:36:37,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:36:37,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:36:37,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:36:37,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:36:37,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:36:37,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:36:37,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:36:37,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:36:37,244 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:36:37,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:36:37,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:36:37,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:36:37,477 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:36:37,477 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:36:37,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2023-03-31 00:36:38,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:36:38,727 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:36:38,727 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2023-03-31 00:36:38,731 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c504612c/c9562da73d604fb1b064d31e28536723/FLAGe2903fee3 [2023-03-31 00:36:38,744 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c504612c/c9562da73d604fb1b064d31e28536723 [2023-03-31 00:36:38,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:36:38,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:36:38,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:36:38,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:36:38,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:36:38,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4117ce00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38, skipping insertion in model container [2023-03-31 00:36:38,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:36:38,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:36:38,845 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c[709,722] [2023-03-31 00:36:38,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:36:38,863 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:36:38,870 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c[709,722] [2023-03-31 00:36:38,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:36:38,886 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:36:38,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38 WrapperNode [2023-03-31 00:36:38,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:36:38,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:36:38,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:36:38,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:36:38,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,907 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:36:38,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:36:38,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:36:38,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:36:38,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (1/1) ... [2023-03-31 00:36:38,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:36:38,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:38,943 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) [2023-03-31 00:36:38,976 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 [2023-03-31 00:36:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:36:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:36:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:36:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 00:36:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 00:36:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:36:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:36:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:36:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:36:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:36:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 00:36:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 00:36:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 00:36:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:36:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:36:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:36:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:36:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:36:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:36:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:36:39,077 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:36:39,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:36:39,298 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:36:39,303 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:36:39,303 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 00:36:39,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:36:39 BoogieIcfgContainer [2023-03-31 00:36:39,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:36:39,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:36:39,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:36:39,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:36:39,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:36:38" (1/3) ... [2023-03-31 00:36:39,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1985dfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:36:39, skipping insertion in model container [2023-03-31 00:36:39,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:38" (2/3) ... [2023-03-31 00:36:39,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1985dfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:36:39, skipping insertion in model container [2023-03-31 00:36:39,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:36:39" (3/3) ... [2023-03-31 00:36:39,311 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_valuebound10.c [2023-03-31 00:36:39,323 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:36:39,323 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:36:39,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:36:39,378 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@600a7199, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:36:39,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:36:39,382 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) [2023-03-31 00:36:39,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 00:36:39,387 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:39,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:36:39,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:39,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash 326851384, now seen corresponding path program 1 times [2023-03-31 00:36:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135841764] [2023-03-31 00:36:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:36:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135841764] [2023-03-31 00:36:39,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-03-31 00:36:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396149759] [2023-03-31 00:36:39,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:39,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:39,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:39,489 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) [2023-03-31 00:36:39,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:36:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:39,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 1 conjunts are in the unsatisfiable core [2023-03-31 00:36:39,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:36:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:36:39,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 00:36:39,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396149759] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:36:39,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:36:39,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 00:36:39,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937376934] [2023-03-31 00:36:39,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:36:39,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 00:36:39,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:36:39,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 00:36:39,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 00:36:39,673 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:36:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:36:39,699 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2023-03-31 00:36:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 00:36:39,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 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 [2023-03-31 00:36:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:36:39,707 INFO L225 Difference]: With dead ends: 53 [2023-03-31 00:36:39,708 INFO L226 Difference]: Without dead ends: 26 [2023-03-31 00:36:39,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 00:36:39,712 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 00:36:39,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:36:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-03-31 00:36:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-03-31 00:36:39,739 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) [2023-03-31 00:36:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-03-31 00:36:39,741 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2023-03-31 00:36:39,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:36:39,742 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-03-31 00:36:39,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:36:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-03-31 00:36:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 00:36:39,743 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:39,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:36:39,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 00:36:39,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-03-31 00:36:39,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:39,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1008578050, now seen corresponding path program 1 times [2023-03-31 00:36:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:39,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328078443] [2023-03-31 00:36:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:39,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:39,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 00:36:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922091709] [2023-03-31 00:36:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:39,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:39,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:39,977 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) [2023-03-31 00:36:39,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:36:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:36:40,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:36:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:36:40,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:36:40,068 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:36:40,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:36:40,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 00:36:40,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-03-31 00:36:40,279 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 00:36:40,281 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:36:40,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:36:40 BoogieIcfgContainer [2023-03-31 00:36:40,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:36:40,303 INFO L158 Benchmark]: Toolchain (without parser) took 1556.14ms. Allocated memory is still 300.9MB. Free memory was 258.2MB in the beginning and 201.1MB in the end (delta: 57.1MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-03-31 00:36:40,307 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:36:40,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 139.58ms. Allocated memory is still 300.9MB. Free memory was 257.7MB in the beginning and 247.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:36:40,313 INFO L158 Benchmark]: Boogie Preprocessor took 29.11ms. Allocated memory is still 300.9MB. Free memory was 247.1MB in the beginning and 245.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 00:36:40,313 INFO L158 Benchmark]: RCFGBuilder took 387.29ms. Allocated memory is still 300.9MB. Free memory was 245.6MB in the beginning and 234.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 00:36:40,314 INFO L158 Benchmark]: TraceAbstraction took 996.42ms. Allocated memory is still 300.9MB. Free memory was 233.6MB in the beginning and 201.1MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-03-31 00:36:40,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 139.58ms. Allocated memory is still 300.9MB. Free memory was 257.7MB in the beginning and 247.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.11ms. Allocated memory is still 300.9MB. Free memory was 247.1MB in the beginning and 245.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 387.29ms. Allocated memory is still 300.9MB. Free memory was 245.6MB in the beginning and 234.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 996.42ms. Allocated memory is still 300.9MB. Free memory was 233.6MB in the beginning and 201.1MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. 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<=10) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=10) 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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 36 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 1 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 [2023-03-31 00:36:40,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...