/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 --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:26:14,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:26:14,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:26:14,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:26:14,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:26:14,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:26:14,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:26:14,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:26:14,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:26:14,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:26:14,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:26:14,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:26:14,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:26:14,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:26:14,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:26:14,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:26:14,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:26:14,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:26:14,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:26:14,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:26:14,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:26:14,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:26:14,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:26:14,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:26:14,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:26:14,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:26:14,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:26:14,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:26:14,447 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 [2020-09-21 10:26:14,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:26:14,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:26:14,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:26:14,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:26:14,477 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:26:14,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:26:14,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:26:14,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:26:14,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:26:14,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:26:14,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:26:14,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:26:14,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:26:14,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:26:14,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:26:14,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:26:14,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:26:14,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:26:14,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:26:14,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:26:14,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:26:14,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:26:14,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:26:14,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:26:14,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:26:14,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:26:14,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:26:14,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:26:14,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:26:14,482 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.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:26:14,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:26:14,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:26:14,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:26:14,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:26:14,986 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:26:14,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-09-21 10:26:15,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4940c9fa/d43ccaff810e46d78afe0468a4122cdf/FLAG4ea20f646 [2020-09-21 10:26:15,680 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:26:15,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-09-21 10:26:15,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4940c9fa/d43ccaff810e46d78afe0468a4122cdf/FLAG4ea20f646 [2020-09-21 10:26:15,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4940c9fa/d43ccaff810e46d78afe0468a4122cdf [2020-09-21 10:26:16,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:26:16,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:26:16,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:26:16,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:26:16,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:26:16,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:26:15" (1/1) ... [2020-09-21 10:26:16,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afef70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16, skipping insertion in model container [2020-09-21 10:26:16,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:26:15" (1/1) ... [2020-09-21 10:26:16,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:26:16,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:26:16,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:26:16,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:26:16,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:26:16,527 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:26:16,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16 WrapperNode [2020-09-21 10:26:16,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:26:16,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:26:16,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:26:16,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:26:16,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (1/1) ... [2020-09-21 10:26:16,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (1/1) ... [2020-09-21 10:26:16,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (1/1) ... [2020-09-21 10:26:16,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (1/1) ... [2020-09-21 10:26:16,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (1/1) ... [2020-09-21 10:26:16,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (1/1) ... [2020-09-21 10:26:16,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (1/1) ... [2020-09-21 10:26:16,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:26:16,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:26:16,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:26:16,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:26:16,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (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 [2020-09-21 10:26:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:26:16,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:26:16,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:26:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:26:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:26:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:26:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:26:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:26:17,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:26:17,245 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-21 10:26:17,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:26:17 BoogieIcfgContainer [2020-09-21 10:26:17,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:26:17,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:26:17,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:26:17,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:26:17,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:26:15" (1/3) ... [2020-09-21 10:26:17,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dbb61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:26:17, skipping insertion in model container [2020-09-21 10:26:17,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:26:16" (2/3) ... [2020-09-21 10:26:17,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dbb61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:26:17, skipping insertion in model container [2020-09-21 10:26:17,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:26:17" (3/3) ... [2020-09-21 10:26:17,270 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-09-21 10:26:17,284 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:26:17,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:26:17,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:26:17,352 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:26:17,352 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:26:17,353 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:26:17,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:26:17,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:26:17,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:26:17,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:26:17,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:26:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-09-21 10:26:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 10:26:17,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:17,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:17,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:17,403 INFO L82 PathProgramCache]: Analyzing trace with hash -105811556, now seen corresponding path program 1 times [2020-09-21 10:26:17,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:17,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814149138] [2020-09-21 10:26:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:17,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814149138] [2020-09-21 10:26:17,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:17,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:26:17,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21359551] [2020-09-21 10:26:17,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:26:17,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:17,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:26:17,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:26:17,724 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-09-21 10:26:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:17,786 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2020-09-21 10:26:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:26:17,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-21 10:26:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:17,805 INFO L225 Difference]: With dead ends: 160 [2020-09-21 10:26:17,805 INFO L226 Difference]: Without dead ends: 78 [2020-09-21 10:26:17,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:26:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-21 10:26:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-21 10:26:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-21 10:26:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2020-09-21 10:26:17,868 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2020-09-21 10:26:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:17,869 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2020-09-21 10:26:17,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:26:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2020-09-21 10:26:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 10:26:17,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:17,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:17,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:26:17,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1547300989, now seen corresponding path program 1 times [2020-09-21 10:26:17,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:17,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964721694] [2020-09-21 10:26:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:17,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964721694] [2020-09-21 10:26:17,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:17,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:17,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520995848] [2020-09-21 10:26:17,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:17,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:17,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:17,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:17,997 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 4 states. [2020-09-21 10:26:18,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:18,304 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2020-09-21 10:26:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:18,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 10:26:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:18,307 INFO L225 Difference]: With dead ends: 153 [2020-09-21 10:26:18,307 INFO L226 Difference]: Without dead ends: 81 [2020-09-21 10:26:18,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-21 10:26:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-21 10:26:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 10:26:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2020-09-21 10:26:18,345 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2020-09-21 10:26:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:18,346 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2020-09-21 10:26:18,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2020-09-21 10:26:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 10:26:18,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:18,347 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:18,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:26:18,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:18,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:18,348 INFO L82 PathProgramCache]: Analyzing trace with hash 555004895, now seen corresponding path program 1 times [2020-09-21 10:26:18,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:18,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654968438] [2020-09-21 10:26:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:18,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654968438] [2020-09-21 10:26:18,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:18,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:18,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747141454] [2020-09-21 10:26:18,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:18,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:18,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:18,414 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 4 states. [2020-09-21 10:26:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:18,499 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2020-09-21 10:26:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:18,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 10:26:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:18,501 INFO L225 Difference]: With dead ends: 146 [2020-09-21 10:26:18,501 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 10:26:18,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 10:26:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-21 10:26:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-21 10:26:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2020-09-21 10:26:18,511 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2020-09-21 10:26:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:18,512 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2020-09-21 10:26:18,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2020-09-21 10:26:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 10:26:18,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:18,514 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:18,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:26:18,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash -624681896, now seen corresponding path program 1 times [2020-09-21 10:26:18,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:18,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312357311] [2020-09-21 10:26:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:18,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312357311] [2020-09-21 10:26:18,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:18,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:18,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785702244] [2020-09-21 10:26:18,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:18,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:18,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:18,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:18,582 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 4 states. [2020-09-21 10:26:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:18,852 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2020-09-21 10:26:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:18,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-21 10:26:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:18,854 INFO L225 Difference]: With dead ends: 192 [2020-09-21 10:26:18,854 INFO L226 Difference]: Without dead ends: 122 [2020-09-21 10:26:18,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-21 10:26:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-09-21 10:26:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-21 10:26:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2020-09-21 10:26:18,869 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2020-09-21 10:26:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:18,869 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2020-09-21 10:26:18,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2020-09-21 10:26:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 10:26:18,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:18,871 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:18,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:26:18,872 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:18,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598883, now seen corresponding path program 1 times [2020-09-21 10:26:18,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:18,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381148842] [2020-09-21 10:26:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:26:18,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381148842] [2020-09-21 10:26:18,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:18,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:18,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635702958] [2020-09-21 10:26:18,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:18,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:18,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:18,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:18,958 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 4 states. [2020-09-21 10:26:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:19,145 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-09-21 10:26:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:19,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 10:26:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:19,147 INFO L225 Difference]: With dead ends: 183 [2020-09-21 10:26:19,148 INFO L226 Difference]: Without dead ends: 87 [2020-09-21 10:26:19,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-21 10:26:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-09-21 10:26:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-21 10:26:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2020-09-21 10:26:19,174 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2020-09-21 10:26:19,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:19,178 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2020-09-21 10:26:19,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2020-09-21 10:26:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 10:26:19,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:19,180 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:26:19,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:26:19,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash -576284788, now seen corresponding path program 1 times [2020-09-21 10:26:19,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:19,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627096518] [2020-09-21 10:26:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:19,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:26:19,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627096518] [2020-09-21 10:26:19,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:19,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:19,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215439152] [2020-09-21 10:26:19,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:19,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:19,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:19,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:19,291 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 4 states. [2020-09-21 10:26:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:19,414 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2020-09-21 10:26:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:19,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-21 10:26:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:19,416 INFO L225 Difference]: With dead ends: 134 [2020-09-21 10:26:19,416 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 10:26:19,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 10:26:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-21 10:26:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-21 10:26:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-09-21 10:26:19,426 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2020-09-21 10:26:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:19,426 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-09-21 10:26:19,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-09-21 10:26:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:26:19,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:19,428 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-21 10:26:19,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:26:19,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:19,430 INFO L82 PathProgramCache]: Analyzing trace with hash -31288535, now seen corresponding path program 1 times [2020-09-21 10:26:19,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:19,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993158989] [2020-09-21 10:26:19,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:19,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:26:19,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993158989] [2020-09-21 10:26:19,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:19,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:19,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957469485] [2020-09-21 10:26:19,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:19,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:19,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:19,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:19,493 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 4 states. [2020-09-21 10:26:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:19,775 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2020-09-21 10:26:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:19,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-21 10:26:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:19,783 INFO L225 Difference]: With dead ends: 158 [2020-09-21 10:26:19,783 INFO L226 Difference]: Without dead ends: 111 [2020-09-21 10:26:19,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-21 10:26:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-09-21 10:26:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-21 10:26:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-09-21 10:26:19,797 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2020-09-21 10:26:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:19,797 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-09-21 10:26:19,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-09-21 10:26:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 10:26:19,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:19,799 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1] [2020-09-21 10:26:19,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:26:19,800 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:19,800 INFO L82 PathProgramCache]: Analyzing trace with hash 180888733, now seen corresponding path program 1 times [2020-09-21 10:26:19,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:19,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527260845] [2020-09-21 10:26:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:26:19,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527260845] [2020-09-21 10:26:19,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:19,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:19,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77172465] [2020-09-21 10:26:19,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:19,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:19,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:19,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:19,877 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 4 states. [2020-09-21 10:26:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:20,022 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2020-09-21 10:26:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:20,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-21 10:26:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:20,024 INFO L225 Difference]: With dead ends: 166 [2020-09-21 10:26:20,024 INFO L226 Difference]: Without dead ends: 92 [2020-09-21 10:26:20,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-21 10:26:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-21 10:26:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-21 10:26:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2020-09-21 10:26:20,033 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2020-09-21 10:26:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:20,033 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2020-09-21 10:26:20,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2020-09-21 10:26:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 10:26:20,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:20,035 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1] [2020-09-21 10:26:20,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:26:20,035 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:20,037 INFO L82 PathProgramCache]: Analyzing trace with hash 317242888, now seen corresponding path program 1 times [2020-09-21 10:26:20,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:20,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531365810] [2020-09-21 10:26:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:20,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:26:20,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531365810] [2020-09-21 10:26:20,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:20,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:20,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349656115] [2020-09-21 10:26:20,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:20,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:20,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:20,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:20,122 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 4 states. [2020-09-21 10:26:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:20,271 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2020-09-21 10:26:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:20,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-21 10:26:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:20,273 INFO L225 Difference]: With dead ends: 139 [2020-09-21 10:26:20,273 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 10:26:20,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 10:26:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-21 10:26:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-21 10:26:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-09-21 10:26:20,279 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2020-09-21 10:26:20,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:20,280 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-09-21 10:26:20,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-09-21 10:26:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-21 10:26:20,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:20,282 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2020-09-21 10:26:20,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:26:20,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1695196396, now seen corresponding path program 1 times [2020-09-21 10:26:20,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:20,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059803046] [2020-09-21 10:26:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:26:20,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059803046] [2020-09-21 10:26:20,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:20,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:20,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011200353] [2020-09-21 10:26:20,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:20,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:20,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:20,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:20,331 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 4 states. [2020-09-21 10:26:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:20,458 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-09-21 10:26:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:20,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-21 10:26:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:20,460 INFO L225 Difference]: With dead ends: 74 [2020-09-21 10:26:20,461 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 10:26:20,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 10:26:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-21 10:26:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-21 10:26:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-09-21 10:26:20,467 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2020-09-21 10:26:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:20,468 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-09-21 10:26:20,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-09-21 10:26:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 10:26:20,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:26:20,470 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2020-09-21 10:26:20,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:26:20,470 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:26:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:26:20,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1000030502, now seen corresponding path program 1 times [2020-09-21 10:26:20,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:26:20,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198741696] [2020-09-21 10:26:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:26:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:20,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:26:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:26:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:26:20,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198741696] [2020-09-21 10:26:20,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:26:20,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:26:20,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444474893] [2020-09-21 10:26:20,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:26:20,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:26:20,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:26:20,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:26:20,522 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 4 states. [2020-09-21 10:26:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:26:20,631 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2020-09-21 10:26:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:26:20,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-21 10:26:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:26:20,632 INFO L225 Difference]: With dead ends: 111 [2020-09-21 10:26:20,632 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:26:20,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:26:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:26:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:26:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:26:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:26:20,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-09-21 10:26:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:26:20,634 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:26:20,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:26:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:26:20,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:26:20,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:26:20,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:26:20,838 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2020-09-21 10:26:20,899 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:26:20,900 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-09-21 10:26:20,900 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:26:20,901 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:26:20,901 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 10:26:20,901 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 10:26:20,901 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:26:20,902 INFO L268 CegarLoopResult]: For program point L316(lines 316 331) no Hoare annotation was computed. [2020-09-21 10:26:20,902 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-09-21 10:26:20,902 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-09-21 10:26:20,902 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-09-21 10:26:20,902 INFO L268 CegarLoopResult]: For program point L184(lines 184 199) no Hoare annotation was computed. [2020-09-21 10:26:20,902 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-09-21 10:26:20,902 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L300(lines 300 315) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L284(lines 284 299) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-09-21 10:26:20,903 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-09-21 10:26:20,904 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-09-21 10:26:20,905 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-09-21 10:26:20,905 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (and (<= main_~this_state~0 0) (= main_~q~0 0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-21 10:26:20,905 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-09-21 10:26:20,905 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-09-21 10:26:20,905 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-09-21 10:26:20,905 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-09-21 10:26:20,906 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-09-21 10:26:20,906 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-09-21 10:26:20,906 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-09-21 10:26:20,906 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-09-21 10:26:20,906 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-09-21 10:26:20,906 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-09-21 10:26:20,906 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-09-21 10:26:20,907 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-09-21 10:26:20,907 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-09-21 10:26:20,907 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-09-21 10:26:20,907 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-09-21 10:26:20,907 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-09-21 10:26:20,907 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-09-21 10:26:20,907 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-09-21 10:26:20,908 INFO L268 CegarLoopResult]: For program point L28(lines 28 43) no Hoare annotation was computed. [2020-09-21 10:26:20,908 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-09-21 10:26:20,908 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-09-21 10:26:20,908 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-09-21 10:26:20,908 INFO L268 CegarLoopResult]: For program point L80(lines 80 95) no Hoare annotation was computed. [2020-09-21 10:26:20,909 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-09-21 10:26:20,909 INFO L268 CegarLoopResult]: For program point L64(lines 64 79) no Hoare annotation was computed. [2020-09-21 10:26:20,909 INFO L268 CegarLoopResult]: For program point L48(lines 48 63) no Hoare annotation was computed. [2020-09-21 10:26:20,909 INFO L268 CegarLoopResult]: For program point L164(lines 164 179) no Hoare annotation was computed. [2020-09-21 10:26:20,909 INFO L268 CegarLoopResult]: For program point L148(lines 148 163) no Hoare annotation was computed. [2020-09-21 10:26:20,909 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-09-21 10:26:20,910 INFO L268 CegarLoopResult]: For program point L264(lines 264 279) no Hoare annotation was computed. [2020-09-21 10:26:20,910 INFO L268 CegarLoopResult]: For program point L132(lines 132 147) no Hoare annotation was computed. [2020-09-21 10:26:20,910 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-09-21 10:26:20,910 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-09-21 10:26:20,910 INFO L268 CegarLoopResult]: For program point L248(lines 248 263) no Hoare annotation was computed. [2020-09-21 10:26:20,910 INFO L268 CegarLoopResult]: For program point L116(lines 116 131) no Hoare annotation was computed. [2020-09-21 10:26:20,910 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-09-21 10:26:20,911 INFO L268 CegarLoopResult]: For program point L364(lines 364 379) no Hoare annotation was computed. [2020-09-21 10:26:20,911 INFO L268 CegarLoopResult]: For program point L232(lines 232 247) no Hoare annotation was computed. [2020-09-21 10:26:20,911 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-09-21 10:26:20,911 INFO L268 CegarLoopResult]: For program point L100(lines 100 115) no Hoare annotation was computed. [2020-09-21 10:26:20,911 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-21 10:26:20,912 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-09-21 10:26:20,912 INFO L268 CegarLoopResult]: For program point L348(lines 348 363) no Hoare annotation was computed. [2020-09-21 10:26:20,912 INFO L268 CegarLoopResult]: For program point L216(lines 216 231) no Hoare annotation was computed. [2020-09-21 10:26:20,912 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-09-21 10:26:20,912 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-09-21 10:26:20,912 INFO L268 CegarLoopResult]: For program point L332(lines 332 347) no Hoare annotation was computed. [2020-09-21 10:26:20,913 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-09-21 10:26:20,913 INFO L268 CegarLoopResult]: For program point L200(lines 200 215) no Hoare annotation was computed. [2020-09-21 10:26:20,913 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-09-21 10:26:20,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:26:20 BoogieIcfgContainer [2020-09-21 10:26:20,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:26:20,939 INFO L168 Benchmark]: Toolchain (without parser) took 4925.57 ms. Allocated memory was 138.9 MB in the beginning and 247.5 MB in the end (delta: 108.5 MB). Free memory was 102.2 MB in the beginning and 172.6 MB in the end (delta: -70.4 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:26:20,940 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:26:20,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.77 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 180.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:26:20,942 INFO L168 Benchmark]: Boogie Preprocessor took 57.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 178.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:26:20,943 INFO L168 Benchmark]: RCFGBuilder took 667.89 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 149.4 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:26:20,944 INFO L168 Benchmark]: TraceAbstraction took 3678.69 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 148.7 MB in the beginning and 172.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:26:20,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 507.77 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 180.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 178.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 667.89 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 149.4 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3678.69 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 148.7 MB in the beginning and 172.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: (((this_state <= 0 && q == 0) || (this_state <= 0 && q == 2)) || (q == 3 && 2 == this_state)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (this_state <= 0 && q == 0) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1008 SDtfs, 1441 SDslu, 73 SDs, 0 SdLazy, 634 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 67 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 153 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 15354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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...