/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 true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:03:14,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:03:14,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:03:14,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:03:14,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:03:14,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:03:14,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:03:14,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:03:14,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:03:14,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:03:14,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:03:14,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:03:14,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:03:14,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:03:14,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:03:14,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:03:14,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:03:14,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:03:14,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:03:14,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:03:14,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:03:14,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:03:14,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:03:14,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:03:14,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:03:14,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:03:14,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:03:14,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:03:14,645 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 [2020-08-21 15:03:14,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:03:14,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:03:14,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:03:14,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:03:14,671 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:03:14,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:03:14,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:03:14,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:03:14,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:03:14,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:03:14,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:03:14,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:03:14,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:03:14,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:03:14,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:03:14,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:03:14,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:03:14,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:03:14,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:03:14,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:03:14,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:03:14,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:03:14,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:03:14,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:03:14,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:03:14,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:03:14,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:03:14,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:03:14,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:03:14,676 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:03:15,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:03:15,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:03:15,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:03:15,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:03:15,029 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:03:15,030 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-21 15:03:15,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf3d8a54/f1cc5ae95bb949baadbfab1b22a8477e/FLAG56975bfe4 [2020-08-21 15:03:15,551 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:03:15,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-21 15:03:15,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf3d8a54/f1cc5ae95bb949baadbfab1b22a8477e/FLAG56975bfe4 [2020-08-21 15:03:15,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf3d8a54/f1cc5ae95bb949baadbfab1b22a8477e [2020-08-21 15:03:15,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:03:15,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:03:15,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:03:15,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:03:15,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:03:15,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:03:15" (1/1) ... [2020-08-21 15:03:15,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61445f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:15, skipping insertion in model container [2020-08-21 15:03:15,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:03:15" (1/1) ... [2020-08-21 15:03:15,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:03:15,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:03:16,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:03:16,197 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:03:16,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:03:16,251 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:03:16,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16 WrapperNode [2020-08-21 15:03:16,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:03:16,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:03:16,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:03:16,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:03:16,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (1/1) ... [2020-08-21 15:03:16,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (1/1) ... [2020-08-21 15:03:16,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (1/1) ... [2020-08-21 15:03:16,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (1/1) ... [2020-08-21 15:03:16,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (1/1) ... [2020-08-21 15:03:16,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (1/1) ... [2020-08-21 15:03:16,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (1/1) ... [2020-08-21 15:03:16,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:03:16,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:03:16,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:03:16,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:03:16,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (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 [2020-08-21 15:03:16,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:03:16,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:03:16,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:03:16,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:03:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:03:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:03:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:03:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:03:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:03:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:03:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:03:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:03:16,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:03:16,901 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 15:03:16,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:03:16 BoogieIcfgContainer [2020-08-21 15:03:16,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:03:16,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:03:16,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:03:16,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:03:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:03:15" (1/3) ... [2020-08-21 15:03:16,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c733c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:03:16, skipping insertion in model container [2020-08-21 15:03:16,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:16" (2/3) ... [2020-08-21 15:03:16,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c733c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:03:16, skipping insertion in model container [2020-08-21 15:03:16,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:03:16" (3/3) ... [2020-08-21 15:03:16,915 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-21 15:03:16,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:03:16,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-21 15:03:16,948 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-21 15:03:16,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:03:16,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:03:16,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:03:16,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:03:16,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:03:16,982 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:03:16,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:03:16,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:03:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-21 15:03:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 15:03:17,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:17,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:17,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-21 15:03:17,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:17,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723122716] [2020-08-21 15:03:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:17,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723122716] [2020-08-21 15:03:17,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:17,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:17,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331647356] [2020-08-21 15:03:17,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:17,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:17,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:17,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:17,358 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-21 15:03:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:17,853 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-21 15:03:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:03:17,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-21 15:03:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:17,882 INFO L225 Difference]: With dead ends: 137 [2020-08-21 15:03:17,882 INFO L226 Difference]: Without dead ends: 113 [2020-08-21 15:03:17,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:03:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-21 15:03:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-21 15:03:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 15:03:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-21 15:03:17,938 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-21 15:03:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:17,939 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-21 15:03:17,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-21 15:03:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 15:03:17,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:17,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:17,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:03:17,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-21 15:03:17,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:17,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57540956] [2020-08-21 15:03:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:18,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57540956] [2020-08-21 15:03:18,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:18,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:03:18,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790855043] [2020-08-21 15:03:18,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:03:18,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:03:18,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:03:18,029 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-21 15:03:18,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:18,201 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-21 15:03:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:03:18,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-21 15:03:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:18,203 INFO L225 Difference]: With dead ends: 69 [2020-08-21 15:03:18,203 INFO L226 Difference]: Without dead ends: 67 [2020-08-21 15:03:18,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-21 15:03:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-21 15:03:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-21 15:03:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-21 15:03:18,215 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-21 15:03:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:18,215 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-21 15:03:18,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:03:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-21 15:03:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 15:03:18,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:18,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:18,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:03:18,217 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:18,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:18,218 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-21 15:03:18,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:18,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438557934] [2020-08-21 15:03:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:18,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438557934] [2020-08-21 15:03:18,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:18,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:03:18,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572652808] [2020-08-21 15:03:18,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:03:18,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:18,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:03:18,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:03:18,289 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-21 15:03:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:18,461 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-21 15:03:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:03:18,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 15:03:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:18,463 INFO L225 Difference]: With dead ends: 73 [2020-08-21 15:03:18,463 INFO L226 Difference]: Without dead ends: 71 [2020-08-21 15:03:18,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:18,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-21 15:03:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-21 15:03:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-21 15:03:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-21 15:03:18,473 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-21 15:03:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:18,473 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-21 15:03:18,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:03:18,474 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-21 15:03:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 15:03:18,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:18,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:18,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:03:18,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:18,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:18,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-21 15:03:18,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:18,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372014452] [2020-08-21 15:03:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:18,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372014452] [2020-08-21 15:03:18,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:18,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:18,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085731862] [2020-08-21 15:03:18,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:18,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:18,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:18,568 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-21 15:03:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:18,776 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-21 15:03:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:03:18,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 15:03:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:18,778 INFO L225 Difference]: With dead ends: 71 [2020-08-21 15:03:18,779 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 15:03:18,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 15:03:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-21 15:03:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 15:03:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-21 15:03:18,799 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-21 15:03:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:18,799 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-21 15:03:18,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-21 15:03:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 15:03:18,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:18,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:18,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:03:18,801 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:18,803 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-21 15:03:18,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:18,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235236229] [2020-08-21 15:03:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:18,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235236229] [2020-08-21 15:03:18,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:18,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:18,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844754330] [2020-08-21 15:03:18,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:18,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:18,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:18,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:18,921 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-21 15:03:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:19,154 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-21 15:03:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:03:19,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 15:03:19,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:19,156 INFO L225 Difference]: With dead ends: 69 [2020-08-21 15:03:19,156 INFO L226 Difference]: Without dead ends: 67 [2020-08-21 15:03:19,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:19,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-21 15:03:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-21 15:03:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-21 15:03:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-21 15:03:19,170 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-21 15:03:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:19,170 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-21 15:03:19,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-21 15:03:19,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 15:03:19,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:19,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:19,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:03:19,177 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:19,177 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-21 15:03:19,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:19,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070497886] [2020-08-21 15:03:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:19,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070497886] [2020-08-21 15:03:19,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:19,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:19,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777196566] [2020-08-21 15:03:19,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:19,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:19,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:19,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:19,262 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-21 15:03:19,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:19,507 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-21 15:03:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:03:19,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-21 15:03:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:19,510 INFO L225 Difference]: With dead ends: 112 [2020-08-21 15:03:19,510 INFO L226 Difference]: Without dead ends: 110 [2020-08-21 15:03:19,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:19,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-21 15:03:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-21 15:03:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-21 15:03:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-21 15:03:19,518 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-21 15:03:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:19,518 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-21 15:03:19,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-21 15:03:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 15:03:19,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:19,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:19,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:03:19,520 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:19,520 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-21 15:03:19,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:19,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21798823] [2020-08-21 15:03:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:19,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21798823] [2020-08-21 15:03:19,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:19,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:03:19,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665292425] [2020-08-21 15:03:19,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:03:19,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:19,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:03:19,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:03:19,587 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-21 15:03:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:19,730 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-21 15:03:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:03:19,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 15:03:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:19,734 INFO L225 Difference]: With dead ends: 65 [2020-08-21 15:03:19,734 INFO L226 Difference]: Without dead ends: 61 [2020-08-21 15:03:19,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-21 15:03:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-21 15:03:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-21 15:03:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-21 15:03:19,741 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-21 15:03:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:19,741 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-21 15:03:19,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:03:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-21 15:03:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 15:03:19,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:19,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:19,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:03:19,743 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:19,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:19,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-21 15:03:19,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:19,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126528234] [2020-08-21 15:03:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:19,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:19,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126528234] [2020-08-21 15:03:19,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:19,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:03:19,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559953324] [2020-08-21 15:03:19,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:03:19,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:19,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:03:19,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:03:19,798 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-21 15:03:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:19,936 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-21 15:03:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:03:19,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 15:03:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:19,940 INFO L225 Difference]: With dead ends: 61 [2020-08-21 15:03:19,940 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 15:03:19,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 15:03:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-21 15:03:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 15:03:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-21 15:03:19,946 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-21 15:03:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:19,947 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-21 15:03:19,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:03:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-21 15:03:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 15:03:19,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:19,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:19,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:03:19,949 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:19,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:19,949 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-21 15:03:19,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:19,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164729505] [2020-08-21 15:03:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:20,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164729505] [2020-08-21 15:03:20,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:20,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:03:20,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956455600] [2020-08-21 15:03:20,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:03:20,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:03:20,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:20,091 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-21 15:03:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:20,325 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-21 15:03:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:03:20,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-21 15:03:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:20,327 INFO L225 Difference]: With dead ends: 95 [2020-08-21 15:03:20,327 INFO L226 Difference]: Without dead ends: 93 [2020-08-21 15:03:20,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:03:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-21 15:03:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-21 15:03:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 15:03:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-21 15:03:20,342 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-21 15:03:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:20,342 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-21 15:03:20,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:03:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-21 15:03:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 15:03:20,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:20,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:20,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:03:20,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-21 15:03:20,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:20,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900567573] [2020-08-21 15:03:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:20,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900567573] [2020-08-21 15:03:20,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:20,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:20,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574721408] [2020-08-21 15:03:20,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:20,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:20,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:20,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:20,417 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-21 15:03:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:20,605 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-21 15:03:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:03:20,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 15:03:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:20,607 INFO L225 Difference]: With dead ends: 72 [2020-08-21 15:03:20,607 INFO L226 Difference]: Without dead ends: 70 [2020-08-21 15:03:20,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-21 15:03:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-21 15:03:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 15:03:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-21 15:03:20,613 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-21 15:03:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:20,614 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-21 15:03:20,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-21 15:03:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 15:03:20,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:20,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:20,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:03:20,615 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-21 15:03:20,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:20,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288500089] [2020-08-21 15:03:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:20,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288500089] [2020-08-21 15:03:20,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:20,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:20,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000602294] [2020-08-21 15:03:20,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:20,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:20,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:20,672 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-21 15:03:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:20,826 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-21 15:03:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:03:20,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 15:03:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:20,827 INFO L225 Difference]: With dead ends: 53 [2020-08-21 15:03:20,827 INFO L226 Difference]: Without dead ends: 51 [2020-08-21 15:03:20,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-21 15:03:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-21 15:03:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-21 15:03:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-21 15:03:20,833 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-21 15:03:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:20,833 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-21 15:03:20,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-21 15:03:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 15:03:20,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:20,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:20,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:03:20,835 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:20,835 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-21 15:03:20,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:20,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887040266] [2020-08-21 15:03:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:20,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887040266] [2020-08-21 15:03:20,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:20,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:03:20,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493508537] [2020-08-21 15:03:20,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:03:20,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:20,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:03:20,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:20,929 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-21 15:03:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:21,091 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-21 15:03:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:03:21,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-21 15:03:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:21,092 INFO L225 Difference]: With dead ends: 50 [2020-08-21 15:03:21,092 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 15:03:21,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:03:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 15:03:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-21 15:03:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-21 15:03:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-21 15:03:21,097 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-21 15:03:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:21,097 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-21 15:03:21,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:03:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-21 15:03:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 15:03:21,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:21,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:21,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:03:21,099 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-21 15:03:21,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:21,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626531534] [2020-08-21 15:03:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:21,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626531534] [2020-08-21 15:03:21,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:21,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:21,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350720658] [2020-08-21 15:03:21,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:21,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:21,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:21,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:21,172 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-21 15:03:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:21,331 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-21 15:03:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:03:21,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 15:03:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:21,333 INFO L225 Difference]: With dead ends: 69 [2020-08-21 15:03:21,333 INFO L226 Difference]: Without dead ends: 67 [2020-08-21 15:03:21,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-21 15:03:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-21 15:03:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 15:03:21,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-21 15:03:21,338 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-21 15:03:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:21,338 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-21 15:03:21,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-21 15:03:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 15:03:21,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:21,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:21,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 15:03:21,340 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:21,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:21,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-21 15:03:21,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:21,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402011199] [2020-08-21 15:03:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:21,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402011199] [2020-08-21 15:03:21,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:21,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:21,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692345369] [2020-08-21 15:03:21,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:21,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:21,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:21,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:21,406 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-21 15:03:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:21,572 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-21 15:03:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:03:21,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 15:03:21,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:21,573 INFO L225 Difference]: With dead ends: 57 [2020-08-21 15:03:21,573 INFO L226 Difference]: Without dead ends: 55 [2020-08-21 15:03:21,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:03:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-21 15:03:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-21 15:03:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 15:03:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-21 15:03:21,579 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-21 15:03:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:21,579 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-21 15:03:21,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-21 15:03:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 15:03:21,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:21,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:21,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 15:03:21,580 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:21,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-21 15:03:21,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:21,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373058068] [2020-08-21 15:03:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:21,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373058068] [2020-08-21 15:03:21,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:21,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:21,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019638113] [2020-08-21 15:03:21,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:21,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:21,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:21,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:21,641 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-21 15:03:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:21,759 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-21 15:03:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:03:21,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 15:03:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:21,762 INFO L225 Difference]: With dead ends: 41 [2020-08-21 15:03:21,762 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 15:03:21,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:03:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 15:03:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 15:03:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 15:03:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-21 15:03:21,769 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-21 15:03:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:21,772 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-21 15:03:21,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-21 15:03:21,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 15:03:21,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:21,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:21,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 15:03:21,774 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-21 15:03:21,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:21,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441312259] [2020-08-21 15:03:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:21,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441312259] [2020-08-21 15:03:21,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:21,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:21,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306389458] [2020-08-21 15:03:21,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:21,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:21,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:21,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:21,855 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-21 15:03:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:22,006 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-21 15:03:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:03:22,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-21 15:03:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:22,008 INFO L225 Difference]: With dead ends: 52 [2020-08-21 15:03:22,008 INFO L226 Difference]: Without dead ends: 50 [2020-08-21 15:03:22,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:03:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-21 15:03:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-21 15:03:22,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 15:03:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-21 15:03:22,013 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-21 15:03:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:22,013 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-21 15:03:22,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-21 15:03:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 15:03:22,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:22,014 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] [2020-08-21 15:03:22,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 15:03:22,015 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:22,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:22,015 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-21 15:03:22,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:22,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71682102] [2020-08-21 15:03:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:22,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:22,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71682102] [2020-08-21 15:03:22,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:22,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:03:22,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428657424] [2020-08-21 15:03:22,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:03:22,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:03:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:03:22,062 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-21 15:03:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:22,155 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-21 15:03:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:03:22,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 15:03:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:22,156 INFO L225 Difference]: With dead ends: 35 [2020-08-21 15:03:22,156 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 15:03:22,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 15:03:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-21 15:03:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 15:03:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 15:03:22,163 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-21 15:03:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:22,163 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 15:03:22,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:03:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 15:03:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 15:03:22,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:22,164 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] [2020-08-21 15:03:22,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 15:03:22,165 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:22,165 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-21 15:03:22,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:22,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568222159] [2020-08-21 15:03:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:22,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568222159] [2020-08-21 15:03:22,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:22,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:03:22,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854380758] [2020-08-21 15:03:22,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:03:22,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:22,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:03:22,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:03:22,261 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-21 15:03:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:22,389 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-21 15:03:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:03:22,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 15:03:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:22,390 INFO L225 Difference]: With dead ends: 37 [2020-08-21 15:03:22,390 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 15:03:22,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 15:03:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 15:03:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 15:03:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 15:03:22,393 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-21 15:03:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:22,393 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 15:03:22,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:03:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 15:03:22,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 15:03:22,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 15:03:22,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 15:03:22,752 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:03:22,752 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= ~__tmp_247_0~0 |old(~__tmp_247_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_305~0 |old(~__return_305~0)|)) [2020-08-21 15:03:22,753 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:03:22,754 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:03:22,754 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 15:03:22,754 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 15:03:22,755 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:03:22,755 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 15:03:22,755 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 15:03:22,755 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 15:03:22,755 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 15:03:22,755 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-21 15:03:22,756 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-21 15:03:22,756 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-21 15:03:22,756 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-21 15:03:22,756 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-21 15:03:22,756 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-21 15:03:22,756 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-21 15:03:22,757 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-21 15:03:22,757 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-21 15:03:22,758 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-21 15:03:22,758 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-21 15:03:22,759 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-21 15:03:22,759 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-21 15:03:22,759 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-21 15:03:22,759 INFO L264 CegarLoopResult]: At program point L326(lines 30 366) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-21 15:03:22,760 INFO L264 CegarLoopResult]: At program point L194(lines 58 252) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-21 15:03:22,760 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-21 15:03:22,760 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-21 15:03:22,760 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-21 15:03:22,761 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-21 15:03:22,761 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-21 15:03:22,761 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-21 15:03:22,761 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-21 15:03:22,761 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-21 15:03:22,761 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-21 15:03:22,761 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-21 15:03:22,762 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-21 15:03:22,763 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-21 15:03:22,763 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 373) the Hoare annotation is: (and (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-08-21 15:03:22,763 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-21 15:03:22,764 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-21 15:03:22,764 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-21 15:03:22,764 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-21 15:03:22,764 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-21 15:03:22,764 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-21 15:03:22,764 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-21 15:03:22,764 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-21 15:03:22,765 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-21 15:03:22,765 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-21 15:03:22,765 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-21 15:03:22,765 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-21 15:03:22,765 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-21 15:03:22,765 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-21 15:03:22,765 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-21 15:03:22,766 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-21 15:03:22,766 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-21 15:03:22,766 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-21 15:03:22,766 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-21 15:03:22,766 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-21 15:03:22,766 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-21 15:03:22,766 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-21 15:03:22,767 INFO L264 CegarLoopResult]: At program point L355(lines 281 362) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-08-21 15:03:22,768 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-21 15:03:22,768 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-21 15:03:22,768 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-21 15:03:22,768 INFO L264 CegarLoopResult]: At program point L248(lines 100 250) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-21 15:03:22,768 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-21 15:03:22,768 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-21 15:03:22,769 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-21 15:03:22,769 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-21 15:03:22,769 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-21 15:03:22,769 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-21 15:03:22,769 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-21 15:03:22,769 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-21 15:03:22,769 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-21 15:03:22,770 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-21 15:03:22,770 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-21 15:03:22,770 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-21 15:03:22,770 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-21 15:03:22,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:03:22 BoogieIcfgContainer [2020-08-21 15:03:22,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:03:22,810 INFO L168 Benchmark]: Toolchain (without parser) took 6857.38 ms. Allocated memory was 139.5 MB in the beginning and 282.1 MB in the end (delta: 142.6 MB). Free memory was 102.6 MB in the beginning and 195.1 MB in the end (delta: -92.5 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:22,812 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:03:22,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.02 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 89.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:22,818 INFO L168 Benchmark]: Boogie Preprocessor took 131.76 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 179.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:22,824 INFO L168 Benchmark]: RCFGBuilder took 521.42 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 153.9 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:22,825 INFO L168 Benchmark]: TraceAbstraction took 5896.58 ms. Allocated memory was 201.9 MB in the beginning and 282.1 MB in the end (delta: 80.2 MB). Free memory was 153.2 MB in the beginning and 195.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:22,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.02 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 89.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.76 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 179.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 521.42 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 153.9 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5896.58 ms. Allocated memory was 201.9 MB in the beginning and 282.1 MB in the end (delta: 80.2 MB). Free memory was 153.2 MB in the beginning and 195.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 337]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 349]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 153]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 296]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 223]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 308]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 277]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 113]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 235]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 141]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 125]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 54]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t < main__tagbuf_len + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 281]: Loop Invariant Derived loop invariant: (main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 80 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 802 SDtfs, 1459 SDslu, 821 SDs, 0 SdLazy, 2124 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, 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, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 76 HoareAnnotationTreeSize, 9 FomulaSimplifications, 50568 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1351 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 13380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...