/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:22:26,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:22:26,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:22:26,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:22:26,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:22:26,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:22:26,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:22:26,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:22:26,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:22:26,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:22:26,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:22:26,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:22:26,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:22:26,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:22:26,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:22:26,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:22:26,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:22:26,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:22:26,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:22:26,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:22:26,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:22:26,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:22:26,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:22:26,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:22:26,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 17:22:26,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:22:26,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:22:26,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:22:26,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:22:26,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:22:26,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:22:26,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:22:26,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:22:26,709 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:22:26,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:22:26,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:22:26,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:22:26,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:22:26,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:22:26,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:22:26,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:22:26,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:22:26,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:22:26,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:22:26,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:22:26,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:22:26,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:22:26,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:22:26,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:22:26,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:22:26,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:22:26,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:22:26,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:22:26,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:22:26,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:22:26,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:22:26,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:22:26,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:22:26,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:22:27,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:22:27,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:22:27,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:22:27,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:22:27,203 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:22:27,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-24 17:22:27,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bdc57ba/5331af45b9a84fddad7c6f5410984fb2/FLAGb3d661cab [2020-09-24 17:22:27,812 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:22:27,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-24 17:22:27,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bdc57ba/5331af45b9a84fddad7c6f5410984fb2/FLAGb3d661cab [2020-09-24 17:22:28,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bdc57ba/5331af45b9a84fddad7c6f5410984fb2 [2020-09-24 17:22:28,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:22:28,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:22:28,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:22:28,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:22:28,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:22:28,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36345b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28, skipping insertion in model container [2020-09-24 17:22:28,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:22:28,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:22:28,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:22:28,449 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:22:28,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:22:28,484 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:22:28,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28 WrapperNode [2020-09-24 17:22:28,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:22:28,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:22:28,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:22:28,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:22:28,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... [2020-09-24 17:22:28,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:22:28,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:22:28,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:22:28,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:22:28,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:22:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:22:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:22:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:22:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:22:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:22:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:22:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:22:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:22:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:22:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:22:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:22:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:22:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:22:28,976 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:22:28,976 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:22:28,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:28 BoogieIcfgContainer [2020-09-24 17:22:28,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:22:28,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:22:28,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:22:29,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:22:29,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:22:28" (1/3) ... [2020-09-24 17:22:29,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23808967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:29, skipping insertion in model container [2020-09-24 17:22:29,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:28" (2/3) ... [2020-09-24 17:22:29,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23808967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:29, skipping insertion in model container [2020-09-24 17:22:29,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:28" (3/3) ... [2020-09-24 17:22:29,007 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-09-24 17:22:29,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:22:29,027 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:22:29,050 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:22:29,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:22:29,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:22:29,078 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:22:29,079 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:22:29,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:22:29,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:22:29,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:22:29,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:22:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 17:22:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 17:22:29,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:29,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:29,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:29,116 INFO L82 PathProgramCache]: Analyzing trace with hash 394160949, now seen corresponding path program 1 times [2020-09-24 17:22:29,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:29,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520922398] [2020-09-24 17:22:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:29,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:22:29,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:29,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 17:22:29,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 17:22:29,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:29,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:29,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:29,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,368 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:29,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:22:29,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:22:29,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:29,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:22:29,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520922398] [2020-09-24 17:22:29,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:22:29,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 17:22:29,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003222383] [2020-09-24 17:22:29,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 17:22:29,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:29,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 17:22:29,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 17:22:29,412 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-09-24 17:22:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:29,444 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-24 17:22:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 17:22:29,446 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-09-24 17:22:29,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:29,458 INFO L225 Difference]: With dead ends: 53 [2020-09-24 17:22:29,459 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 17:22:29,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 17:22:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 17:22:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-24 17:22:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 17:22:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-09-24 17:22:29,517 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 23 [2020-09-24 17:22:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:29,517 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-09-24 17:22:29,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 17:22:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-09-24 17:22:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 17:22:29,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:29,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:29,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:22:29,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:29,521 INFO L82 PathProgramCache]: Analyzing trace with hash 79240288, now seen corresponding path program 1 times [2020-09-24 17:22:29,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:29,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922037643] [2020-09-24 17:22:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:29,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:22:29,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:29,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 17:22:29,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:29,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:22:29,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:22:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:22:29,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:30,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:30,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:22:30,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:22:30,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:22:30,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922037643] [2020-09-24 17:22:30,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:22:30,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:22:30,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495147669] [2020-09-24 17:22:30,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:22:30,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:30,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:22:30,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:22:30,073 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-09-24 17:22:30,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:30,336 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-24 17:22:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:22:30,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-24 17:22:30,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:30,340 INFO L225 Difference]: With dead ends: 40 [2020-09-24 17:22:30,340 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 17:22:30,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:22:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 17:22:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-24 17:22:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 17:22:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-24 17:22:30,357 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2020-09-24 17:22:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:30,357 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-24 17:22:30,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:22:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-24 17:22:30,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 17:22:30,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:30,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:30,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:22:30,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:30,362 INFO L82 PathProgramCache]: Analyzing trace with hash 821188708, now seen corresponding path program 1 times [2020-09-24 17:22:30,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:30,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593903123] [2020-09-24 17:22:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:30,724 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:30,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:22:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-24 17:22:30,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:22:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:22:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:22:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:31,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:22:31,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:22:31,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:31,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:22:31,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593903123] [2020-09-24 17:22:31,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:22:31,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 17:22:31,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104538763] [2020-09-24 17:22:31,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:22:31,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:31,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:22:31,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:22:31,070 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-09-24 17:22:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:31,417 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-24 17:22:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 17:22:31,418 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-09-24 17:22:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:31,419 INFO L225 Difference]: With dead ends: 48 [2020-09-24 17:22:31,419 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 17:22:31,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:22:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 17:22:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 17:22:31,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 17:22:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-09-24 17:22:31,427 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2020-09-24 17:22:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:31,428 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-09-24 17:22:31,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:22:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-09-24 17:22:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 17:22:31,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:31,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:31,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:22:31,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1866551400, now seen corresponding path program 2 times [2020-09-24 17:22:31,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:31,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254365263] [2020-09-24 17:22:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 17:22:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-24 17:22:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:22:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:22:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:22:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:32,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:32,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:32,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:22:32,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:22:32,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:32,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:32,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:22:32,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254365263] [2020-09-24 17:22:32,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:22:32,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 17:22:32,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833059086] [2020-09-24 17:22:32,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 17:22:32,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:32,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 17:22:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:22:32,349 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 19 states. [2020-09-24 17:22:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:33,294 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-24 17:22:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 17:22:33,295 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-09-24 17:22:33,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:33,296 INFO L225 Difference]: With dead ends: 54 [2020-09-24 17:22:33,297 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 17:22:33,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 17:22:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 17:22:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 17:22:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 17:22:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-09-24 17:22:33,306 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 39 [2020-09-24 17:22:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:33,309 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-09-24 17:22:33,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 17:22:33,309 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-09-24 17:22:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 17:22:33,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:33,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:33,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:22:33,312 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:33,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:33,312 INFO L82 PathProgramCache]: Analyzing trace with hash 472515692, now seen corresponding path program 3 times [2020-09-24 17:22:33,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:33,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322918881] [2020-09-24 17:22:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:33,865 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:33,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:22:33,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-24 17:22:33,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:22:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:22:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:22:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:34,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:22:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:22:34,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 17:22:34,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322918881] [2020-09-24 17:22:34,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:22:34,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:22:34,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643235738] [2020-09-24 17:22:34,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:22:34,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:34,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:22:34,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:22:34,233 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 16 states. [2020-09-24 17:22:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:34,602 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-24 17:22:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:22:34,602 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-24 17:22:34,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:34,603 INFO L225 Difference]: With dead ends: 48 [2020-09-24 17:22:34,603 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:22:34,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:22:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:22:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:22:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:22:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:22:34,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-24 17:22:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:34,608 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:22:34,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:22:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:22:34,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:22:34,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:22:34,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:22:34,703 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 17:22:34,703 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:22:34,703 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:22:34,703 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:22:34,703 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:22:34,704 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:22:34,704 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:22:34,704 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:22:34,704 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 17:22:34,704 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 17:22:34,704 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:22:34,704 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 17:22:34,705 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 17:22:34,706 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 17:22:34,706 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 17:22:34,706 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 17:22:34,706 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 17:22:34,706 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 17:22:34,706 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 17:22:34,706 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-09-24 17:22:34,707 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-09-24 17:22:34,707 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2020-09-24 17:22:34,707 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 17:22:34,707 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 17:22:34,707 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (or (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) (not (= main_~i~0 main_~j~0))) [2020-09-24 17:22:34,707 INFO L268 CegarLoopResult]: For program point L22-3(lines 13 31) no Hoare annotation was computed. [2020-09-24 17:22:34,708 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 17:22:34,708 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 17:22:34,708 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 17:22:34,708 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 17:22:34,708 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 17:22:34,708 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 17:22:34,708 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 17:22:34,709 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 17:22:34,709 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 17:22:34,709 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 17:22:34,709 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 17:22:34,709 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 17:22:34,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:22:34 BoogieIcfgContainer [2020-09-24 17:22:34,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:22:34,736 INFO L168 Benchmark]: Toolchain (without parser) took 6558.55 ms. Allocated memory was 140.0 MB in the beginning and 276.3 MB in the end (delta: 136.3 MB). Free memory was 102.0 MB in the beginning and 144.4 MB in the end (delta: -42.5 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:34,737 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 17:22:34,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.15 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:34,739 INFO L168 Benchmark]: Boogie Preprocessor took 110.45 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 182.9 MB in the end (delta: -90.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:34,740 INFO L168 Benchmark]: RCFGBuilder took 385.11 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 167.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:34,741 INFO L168 Benchmark]: TraceAbstraction took 5736.92 ms. Allocated memory was 202.9 MB in the beginning and 276.3 MB in the end (delta: 73.4 MB). Free memory was 166.9 MB in the beginning and 144.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 95.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:34,746 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.15 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.45 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 182.9 MB in the end (delta: -90.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.11 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 167.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5736.92 ms. Allocated memory was 202.9 MB in the beginning and 276.3 MB in the end (delta: 73.4 MB). Free memory was 166.9 MB in the beginning and 144.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 95.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y + z <= x && x <= y + z) || !(i == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 77 SDslu, 536 SDs, 0 SdLazy, 569 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=4, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 32 HoareAnnotationTreeSize, 11 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 47830 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 16/38 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 proved your program to be correct! Received shutdown request...