/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:54:47,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:54:47,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:54:47,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 21:54:47,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:54:47,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:54:47,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:54:47,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 21:54:47,769 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:54:47,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:54:47,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:54:47,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:54:47,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:54:47,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:54:47,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:54:47,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:54:47,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:54:47,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:54:47,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:54:47,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:54:47,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:54:47,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:54:47,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:54:47,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:54:47,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:54:47,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:54:47,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:54:47,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:54:47,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:54:47,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:54:47,774 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:54:47,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:54:48,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:54:48,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:54:48,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:54:48,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:54:48,051 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:54:48,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-01-31 21:54:48,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4a7388f/ff20d800a73044faae17719e2f159492/FLAG365b258b8 [2022-01-31 21:54:48,522 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:54:48,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-01-31 21:54:48,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4a7388f/ff20d800a73044faae17719e2f159492/FLAG365b258b8 [2022-01-31 21:54:48,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4a7388f/ff20d800a73044faae17719e2f159492 [2022-01-31 21:54:48,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:54:48,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:54:48,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:54:48,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:54:48,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:54:48,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:54:48" (1/1) ... [2022-01-31 21:54:48,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76aacc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:48, skipping insertion in model container [2022-01-31 21:54:48,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:54:48" (1/1) ... [2022-01-31 21:54:48,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:54:48,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:54:49,104 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_unwindbound10.c[573,586] [2022-01-31 21:54:49,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:54:49,146 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:54:49,156 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_unwindbound10.c[573,586] [2022-01-31 21:54:49,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:54:49,171 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:54:49,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49 WrapperNode [2022-01-31 21:54:49,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:54:49,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:54:49,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:54:49,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:54:49,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:54:49,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:54:49,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:54:49,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:54:49,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (1/1) ... [2022-01-31 21:54:49,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:54:49,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:54:49,224 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) [2022-01-31 21:54:49,248 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 [2022-01-31 21:54:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:54:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:54:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:54:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 21:54:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 21:54:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:54:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 21:54:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:54:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:54:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:54:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 21:54:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 21:54:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 21:54:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:54:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:54:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:54:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:54:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:54:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:54:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:54:49,331 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:54:49,332 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:54:49,496 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:54:49,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:54:49,502 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 21:54:49,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:54:49 BoogieIcfgContainer [2022-01-31 21:54:49,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:54:49,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:54:49,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:54:49,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:54:49,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:54:48" (1/3) ... [2022-01-31 21:54:49,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654addf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:54:49, skipping insertion in model container [2022-01-31 21:54:49,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:49" (2/3) ... [2022-01-31 21:54:49,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654addf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:54:49, skipping insertion in model container [2022-01-31 21:54:49,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:54:49" (3/3) ... [2022-01-31 21:54:49,511 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2022-01-31 21:54:49,515 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:54:49,515 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:54:49,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:54:49,586 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=JORDAN [2022-01-31 21:54:49,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:54:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 21:54:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 21:54:49,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:54:49,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:54:49,621 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:54:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:54:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 1 times [2022-01-31 21:54:49,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:54:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601096260] [2022-01-31 21:54:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:54:49,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:54:49,691 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:54:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:54:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 21:54:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 21:54:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:54:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 21:54:49,884 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:54:49,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601096260] [2022-01-31 21:54:49,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1601096260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:54:49,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:54:49,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 21:54:49,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582579670] [2022-01-31 21:54:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:54:49,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 21:54:49,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:54:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 21:54:49,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:54:49,926 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 21:54:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:54:50,015 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2022-01-31 21:54:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 21:54:50,023 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 [2022-01-31 21:54:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:54:50,030 INFO L225 Difference]: With dead ends: 54 [2022-01-31 21:54:50,030 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 21:54:50,033 INFO L932 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 [2022-01-31 21:54:50,038 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:54:50,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:54:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 21:54:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-01-31 21:54:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 21:54:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-01-31 21:54:50,078 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-01-31 21:54:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:54:50,078 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-01-31 21:54:50,079 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, (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) [2022-01-31 21:54:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-01-31 21:54:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 21:54:50,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:54:50,081 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:54:50,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:54:50,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:54:50,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:54:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 1 times [2022-01-31 21:54:50,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:54:50,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17102539] [2022-01-31 21:54:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:54:50,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:54:50,085 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:54:50,099 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 21:54:50,100 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 21:54:50,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 21:54:50,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 21:54:50,110 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 21:54:50,113 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 21:54:50,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:54:50 BoogieIcfgContainer [2022-01-31 21:54:50,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 21:54:50,128 INFO L158 Benchmark]: Toolchain (without parser) took 1200.84ms. Allocated memory was 191.9MB in the beginning and 285.2MB in the end (delta: 93.3MB). Free memory was 140.1MB in the beginning and 217.5MB in the end (delta: -77.4MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. [2022-01-31 21:54:50,128 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 191.9MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:54:50,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.65ms. Allocated memory was 191.9MB in the beginning and 285.2MB in the end (delta: 93.3MB). Free memory was 139.9MB in the beginning and 258.8MB in the end (delta: -118.9MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. [2022-01-31 21:54:50,134 INFO L158 Benchmark]: Boogie Preprocessor took 22.93ms. Allocated memory is still 285.2MB. Free memory was 258.8MB in the beginning and 257.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 21:54:50,134 INFO L158 Benchmark]: RCFGBuilder took 308.17ms. Allocated memory is still 285.2MB. Free memory was 257.4MB in the beginning and 245.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 21:54:50,135 INFO L158 Benchmark]: TraceAbstraction took 621.08ms. Allocated memory is still 285.2MB. Free memory was 245.3MB in the beginning and 217.5MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-01-31 21:54:50,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 191.9MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.65ms. Allocated memory was 191.9MB in the beginning and 285.2MB in the end (delta: 93.3MB). Free memory was 139.9MB in the beginning and 258.8MB in the end (delta: -118.9MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.93ms. Allocated memory is still 285.2MB. Free memory was 258.8MB in the beginning and 257.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 308.17ms. Allocated memory is still 285.2MB. Free memory was 257.4MB in the beginning and 245.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 621.08ms. Allocated memory is still 285.2MB. Free memory was 245.3MB in the beginning and 217.5MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. 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: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(x1 >= 0) [L30] CALL assume_abort_if_not(x2 != 0) [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(x2 != 0) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 [L36] EXPR counter++ [L36] COND FALSE !(counter++<10) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 31 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 21:54:50,174 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...