/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 [2020-08-22 00:43:51,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:43:51,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:43:51,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:43:51,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:43:51,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:43:51,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:43:51,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:43:51,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:43:51,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:43:51,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:43:51,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:43:51,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:43:51,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:43:51,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:43:51,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:43:51,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:43:51,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:43:51,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:43:51,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:43:51,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:43:51,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:43:51,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:43:51,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:43:51,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:43:51,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:43:51,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:43:51,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:43:51,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:43:51,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 00:43:51,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:43:51,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:43:51,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:43:51,681 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 [2020-08-22 00:43:51,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:43:51,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:43:51,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:43:51,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:43:51,730 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:43:51,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:43:51,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:43:51,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:43:51,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:43:51,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:43:51,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:43:51,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:43:51,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:43:51,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:43:51,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:43:51,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:43:51,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:43:51,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:43:51,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:43:51,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:43:51,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:43:51,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:43:51,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:43:51,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:43:51,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:43:51,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:43:51,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:43:51,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:43:51,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:43:51,736 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:43:52,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:43:52,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:43:52,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:43:52,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:43:52,095 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:43:52,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-22 00:43:52,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dd1f4663/2962bcf2170b43c3b81b94516756a50c/FLAGd461f4069 [2020-08-22 00:43:52,651 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:43:52,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-22 00:43:52,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dd1f4663/2962bcf2170b43c3b81b94516756a50c/FLAGd461f4069 [2020-08-22 00:43:53,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dd1f4663/2962bcf2170b43c3b81b94516756a50c [2020-08-22 00:43:53,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:43:53,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:43:53,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:53,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:43:53,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:43:53,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70996f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53, skipping insertion in model container [2020-08-22 00:43:53,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:43:53,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:43:53,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:53,308 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:43:53,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:53,357 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:43:53,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53 WrapperNode [2020-08-22 00:43:53,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:53,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:43:53,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:43:53,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:43:53,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (1/1) ... [2020-08-22 00:43:53,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:43:53,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:43:53,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:43:53,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:43:53,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (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 [2020-08-22 00:43:53,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:43:53,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:43:53,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 00:43:53,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:43:53,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:43:53,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 00:43:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 00:43:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 00:43:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:43:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:43:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:43:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:43:53,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:43:53,900 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 00:43:53,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:53 BoogieIcfgContainer [2020-08-22 00:43:53,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:43:53,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:43:53,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:43:53,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:43:53,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:43:53" (1/3) ... [2020-08-22 00:43:53,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a36e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:53, skipping insertion in model container [2020-08-22 00:43:53,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:53" (2/3) ... [2020-08-22 00:43:53,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a36e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:53, skipping insertion in model container [2020-08-22 00:43:53,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:53" (3/3) ... [2020-08-22 00:43:53,915 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-22 00:43:53,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:43:53,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-22 00:43:53,949 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-22 00:43:53,976 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:43:53,976 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:43:53,977 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:43:53,977 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:43:53,977 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:43:53,977 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:43:53,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:43:53,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:43:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-22 00:43:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 00:43:54,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:54,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:54,021 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]=== [2020-08-22 00:43:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-22 00:43:54,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:54,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872105391] [2020-08-22 00:43:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:54,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872105391] [2020-08-22 00:43:54,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:54,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:54,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236865219] [2020-08-22 00:43:54,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:54,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:54,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:54,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:54,336 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-22 00:43:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:54,792 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-22 00:43:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:43:54,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-22 00:43:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:54,807 INFO L225 Difference]: With dead ends: 137 [2020-08-22 00:43:54,807 INFO L226 Difference]: Without dead ends: 113 [2020-08-22 00:43:54,812 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 [2020-08-22 00:43:54,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-22 00:43:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-22 00:43:54,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 00:43:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-22 00:43:54,865 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-22 00:43:54,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:54,866 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-22 00:43:54,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-22 00:43:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 00:43:54,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:54,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:54,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:43:54,869 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]=== [2020-08-22 00:43:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-22 00:43:54,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:54,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692529926] [2020-08-22 00:43:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:54,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:54,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692529926] [2020-08-22 00:43:54,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:54,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:43:54,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137758785] [2020-08-22 00:43:54,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:54,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:54,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:54,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:54,944 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-22 00:43:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:55,110 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-22 00:43:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:55,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-22 00:43:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:55,112 INFO L225 Difference]: With dead ends: 69 [2020-08-22 00:43:55,113 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 00:43:55,114 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 [2020-08-22 00:43:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 00:43:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-22 00:43:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-22 00:43:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-22 00:43:55,125 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-22 00:43:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:55,126 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-22 00:43:55,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-22 00:43:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 00:43:55,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:55,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:55,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:43:55,128 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]=== [2020-08-22 00:43:55,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:55,129 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-22 00:43:55,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:55,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316383797] [2020-08-22 00:43:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:55,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316383797] [2020-08-22 00:43:55,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:55,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:43:55,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795709726] [2020-08-22 00:43:55,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:55,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:55,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:55,222 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-22 00:43:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:55,382 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-22 00:43:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:55,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 00:43:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:55,384 INFO L225 Difference]: With dead ends: 73 [2020-08-22 00:43:55,384 INFO L226 Difference]: Without dead ends: 71 [2020-08-22 00:43:55,385 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 [2020-08-22 00:43:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-22 00:43:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-22 00:43:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 00:43:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-22 00:43:55,395 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-22 00:43:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:55,395 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-22 00:43:55,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:55,396 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-22 00:43:55,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 00:43:55,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:55,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:55,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:43:55,405 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]=== [2020-08-22 00:43:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-22 00:43:55,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:55,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896374189] [2020-08-22 00:43:55,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:55,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896374189] [2020-08-22 00:43:55,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:55,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:55,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116443353] [2020-08-22 00:43:55,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:55,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:55,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:55,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:55,591 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-22 00:43:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:55,803 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-22 00:43:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:55,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-22 00:43:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:55,805 INFO L225 Difference]: With dead ends: 71 [2020-08-22 00:43:55,805 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 00:43:55,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:43:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 00:43:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-22 00:43:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 00:43:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-22 00:43:55,827 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-22 00:43:55,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:55,827 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-22 00:43:55,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-22 00:43:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 00:43:55,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:55,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:55,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:43:55,830 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]=== [2020-08-22 00:43:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:55,831 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-22 00:43:55,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:55,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112390323] [2020-08-22 00:43:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:55,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:55,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112390323] [2020-08-22 00:43:55,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:55,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:55,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058570823] [2020-08-22 00:43:55,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:55,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:55,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:55,925 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-22 00:43:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:56,108 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-22 00:43:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:56,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-22 00:43:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:56,110 INFO L225 Difference]: With dead ends: 69 [2020-08-22 00:43:56,110 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 00:43:56,110 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 [2020-08-22 00:43:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 00:43:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-22 00:43:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 00:43:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-22 00:43:56,117 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-22 00:43:56,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:56,118 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-22 00:43:56,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-22 00:43:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 00:43:56,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:56,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:56,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:43:56,120 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]=== [2020-08-22 00:43:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:56,120 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-22 00:43:56,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:56,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257974661] [2020-08-22 00:43:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:56,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257974661] [2020-08-22 00:43:56,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:56,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:56,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000297130] [2020-08-22 00:43:56,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:56,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:56,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:56,182 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-22 00:43:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:56,410 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-22 00:43:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:56,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-22 00:43:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:56,412 INFO L225 Difference]: With dead ends: 112 [2020-08-22 00:43:56,412 INFO L226 Difference]: Without dead ends: 110 [2020-08-22 00:43:56,413 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 [2020-08-22 00:43:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-22 00:43:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-22 00:43:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-22 00:43:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-22 00:43:56,421 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-22 00:43:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:56,421 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-22 00:43:56,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-22 00:43:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 00:43:56,422 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:56,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:56,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:43:56,423 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]=== [2020-08-22 00:43:56,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:56,424 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-22 00:43:56,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:56,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120969403] [2020-08-22 00:43:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:56,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120969403] [2020-08-22 00:43:56,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:56,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:43:56,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405872667] [2020-08-22 00:43:56,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:56,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:56,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:56,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:56,477 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-22 00:43:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:56,593 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-22 00:43:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:56,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 00:43:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:56,595 INFO L225 Difference]: With dead ends: 65 [2020-08-22 00:43:56,595 INFO L226 Difference]: Without dead ends: 61 [2020-08-22 00:43:56,595 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 [2020-08-22 00:43:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-22 00:43:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-22 00:43:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 00:43:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-22 00:43:56,605 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-22 00:43:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:56,606 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-22 00:43:56,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-22 00:43:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 00:43:56,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:56,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:56,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:43:56,608 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]=== [2020-08-22 00:43:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:56,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-22 00:43:56,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:56,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580616727] [2020-08-22 00:43:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:56,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580616727] [2020-08-22 00:43:56,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:56,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:43:56,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100232904] [2020-08-22 00:43:56,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:56,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:56,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:56,662 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-22 00:43:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:56,769 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-22 00:43:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:56,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 00:43:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:56,771 INFO L225 Difference]: With dead ends: 61 [2020-08-22 00:43:56,771 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 00:43:56,771 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 [2020-08-22 00:43:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 00:43:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-22 00:43:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 00:43:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-22 00:43:56,776 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-22 00:43:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:56,777 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-22 00:43:56,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-22 00:43:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 00:43:56,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:56,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:56,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:43:56,779 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]=== [2020-08-22 00:43:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-22 00:43:56,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:56,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18813889] [2020-08-22 00:43:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:56,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18813889] [2020-08-22 00:43:56,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:56,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 00:43:56,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868466224] [2020-08-22 00:43:56,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:43:56,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:56,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:43:56,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:56,885 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-22 00:43:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:57,105 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-22 00:43:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:43:57,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-22 00:43:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:57,107 INFO L225 Difference]: With dead ends: 95 [2020-08-22 00:43:57,107 INFO L226 Difference]: Without dead ends: 93 [2020-08-22 00:43:57,107 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 [2020-08-22 00:43:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-22 00:43:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-22 00:43:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 00:43:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-22 00:43:57,113 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-22 00:43:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:57,113 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-22 00:43:57,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:43:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-22 00:43:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 00:43:57,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:57,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:57,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:43:57,115 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]=== [2020-08-22 00:43:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:57,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-22 00:43:57,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:57,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753944280] [2020-08-22 00:43:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:57,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753944280] [2020-08-22 00:43:57,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:57,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:57,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589620649] [2020-08-22 00:43:57,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:57,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:57,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:57,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:57,189 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-22 00:43:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:57,366 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-22 00:43:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:57,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 00:43:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:57,368 INFO L225 Difference]: With dead ends: 72 [2020-08-22 00:43:57,369 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 00:43:57,370 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 [2020-08-22 00:43:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 00:43:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-22 00:43:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 00:43:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-22 00:43:57,375 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-22 00:43:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:57,375 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-22 00:43:57,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-22 00:43:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 00:43:57,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:57,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:57,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:43:57,377 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]=== [2020-08-22 00:43:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-22 00:43:57,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:57,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318327292] [2020-08-22 00:43:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:57,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318327292] [2020-08-22 00:43:57,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:57,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:57,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729506496] [2020-08-22 00:43:57,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:57,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:57,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:57,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:57,424 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-22 00:43:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:57,554 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-22 00:43:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:57,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 00:43:57,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:57,555 INFO L225 Difference]: With dead ends: 53 [2020-08-22 00:43:57,555 INFO L226 Difference]: Without dead ends: 51 [2020-08-22 00:43:57,556 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 [2020-08-22 00:43:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-22 00:43:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-22 00:43:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 00:43:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-22 00:43:57,560 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-22 00:43:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:57,561 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-22 00:43:57,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-22 00:43:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 00:43:57,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:57,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:57,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:43:57,563 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]=== [2020-08-22 00:43:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:57,563 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-22 00:43:57,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:57,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679733893] [2020-08-22 00:43:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:57,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679733893] [2020-08-22 00:43:57,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:57,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 00:43:57,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663828112] [2020-08-22 00:43:57,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:43:57,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:57,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:43:57,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:57,653 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-22 00:43:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:57,811 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-22 00:43:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:43:57,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-22 00:43:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:57,812 INFO L225 Difference]: With dead ends: 50 [2020-08-22 00:43:57,812 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 00:43:57,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:43:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 00:43:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-22 00:43:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 00:43:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-22 00:43:57,817 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-22 00:43:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:57,817 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-22 00:43:57,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:43:57,818 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-22 00:43:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 00:43:57,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:57,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:57,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:43:57,819 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]=== [2020-08-22 00:43:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:57,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-22 00:43:57,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:57,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604134467] [2020-08-22 00:43:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:57,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604134467] [2020-08-22 00:43:57,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:57,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:57,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328956089] [2020-08-22 00:43:57,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:57,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:57,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:57,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:57,862 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-22 00:43:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:58,026 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-22 00:43:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:58,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 00:43:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:58,028 INFO L225 Difference]: With dead ends: 69 [2020-08-22 00:43:58,028 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 00:43:58,029 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 [2020-08-22 00:43:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 00:43:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-22 00:43:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 00:43:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-22 00:43:58,037 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-22 00:43:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:58,038 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-22 00:43:58,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-22 00:43:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 00:43:58,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:58,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:58,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 00:43:58,040 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]=== [2020-08-22 00:43:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-22 00:43:58,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:58,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919989302] [2020-08-22 00:43:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:58,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919989302] [2020-08-22 00:43:58,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:58,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:58,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531838527] [2020-08-22 00:43:58,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:58,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:58,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:58,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:58,156 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-22 00:43:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:58,338 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-22 00:43:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:43:58,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 00:43:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:58,339 INFO L225 Difference]: With dead ends: 57 [2020-08-22 00:43:58,339 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 00:43:58,340 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 [2020-08-22 00:43:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 00:43:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-22 00:43:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 00:43:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-22 00:43:58,345 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-22 00:43:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:58,346 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-22 00:43:58,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-22 00:43:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 00:43:58,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:58,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:58,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 00:43:58,348 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]=== [2020-08-22 00:43:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:58,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-22 00:43:58,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:58,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934537133] [2020-08-22 00:43:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:58,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934537133] [2020-08-22 00:43:58,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:58,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:58,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20725561] [2020-08-22 00:43:58,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:58,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:58,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:58,443 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-22 00:43:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:58,545 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-22 00:43:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:43:58,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 00:43:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:58,547 INFO L225 Difference]: With dead ends: 41 [2020-08-22 00:43:58,547 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 00:43:58,547 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 [2020-08-22 00:43:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 00:43:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-22 00:43:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 00:43:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-22 00:43:58,551 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-22 00:43:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:58,551 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-22 00:43:58,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-22 00:43:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 00:43:58,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:58,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:58,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 00:43:58,553 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]=== [2020-08-22 00:43:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:58,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-22 00:43:58,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:58,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954695109] [2020-08-22 00:43:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:58,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954695109] [2020-08-22 00:43:58,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:58,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:58,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055633151] [2020-08-22 00:43:58,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:58,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:58,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:58,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:58,618 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-22 00:43:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:58,776 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-22 00:43:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:43:58,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-22 00:43:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:58,777 INFO L225 Difference]: With dead ends: 52 [2020-08-22 00:43:58,778 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 00:43:58,778 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 [2020-08-22 00:43:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 00:43:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-22 00:43:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 00:43:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-22 00:43:58,783 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-22 00:43:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:58,783 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-22 00:43:58,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-22 00:43:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 00:43:58,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:58,785 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] [2020-08-22 00:43:58,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 00:43:58,785 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]=== [2020-08-22 00:43:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:58,786 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-22 00:43:58,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:58,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92155236] [2020-08-22 00:43:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:58,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92155236] [2020-08-22 00:43:58,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:58,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:43:58,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533194527] [2020-08-22 00:43:58,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:58,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:58,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:58,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:58,839 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-22 00:43:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:58,921 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-22 00:43:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:58,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 00:43:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:58,922 INFO L225 Difference]: With dead ends: 35 [2020-08-22 00:43:58,922 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 00:43:58,923 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 [2020-08-22 00:43:58,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 00:43:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 00:43:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 00:43:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-22 00:43:58,927 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-22 00:43:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:58,927 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-22 00:43:58,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-22 00:43:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 00:43:58,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:58,928 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] [2020-08-22 00:43:58,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 00:43:58,929 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]=== [2020-08-22 00:43:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:58,929 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-22 00:43:58,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:58,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317203440] [2020-08-22 00:43:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:58,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317203440] [2020-08-22 00:43:58,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:58,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:43:58,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227222476] [2020-08-22 00:43:58,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:58,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:58,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:58,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:58,981 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-22 00:43:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:59,056 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-22 00:43:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:59,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-22 00:43:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:59,056 INFO L225 Difference]: With dead ends: 37 [2020-08-22 00:43:59,056 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:43:59,057 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 [2020-08-22 00:43:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:43:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:43:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:43:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:43:59,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-22 00:43:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:59,058 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:43:59,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:43:59,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:43:59,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 00:43:59,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:43:59,380 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:43:59,380 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)|)) [2020-08-22 00:43:59,381 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:43:59,381 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:43:59,381 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 00:43:59,381 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 00:43:59,381 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:43:59,381 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-22 00:43:59,381 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 00:43:59,382 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-22 00:43:59,382 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-22 00:43:59,382 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-22 00:43:59,382 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-22 00:43:59,382 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-22 00:43:59,382 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-22 00:43:59,382 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-22 00:43:59,383 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-22 00:43:59,383 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-22 00:43:59,383 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-22 00:43:59,383 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-22 00:43:59,384 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-22 00:43:59,384 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-22 00:43:59,384 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-22 00:43:59,385 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-22 00:43:59,385 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-22 00:43:59,385 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)) [2020-08-22 00:43:59,385 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))) [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-22 00:43:59,386 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-22 00:43:59,387 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-22 00:43:59,387 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-22 00:43:59,387 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-22 00:43:59,388 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-22 00:43:59,389 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)) [2020-08-22 00:43:59,389 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-22 00:43:59,389 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-22 00:43:59,390 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-22 00:43:59,391 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-22 00:43:59,391 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-22 00:43:59,391 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-22 00:43:59,391 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-22 00:43:59,391 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-22 00:43:59,391 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-22 00:43:59,391 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-22 00:43:59,391 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-22 00:43:59,392 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-22 00:43:59,392 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-22 00:43:59,392 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-22 00:43:59,392 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-22 00:43:59,393 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)) [2020-08-22 00:43:59,393 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-22 00:43:59,393 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-22 00:43:59,394 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-22 00:43:59,394 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))) [2020-08-22 00:43:59,394 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-22 00:43:59,394 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-22 00:43:59,394 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-22 00:43:59,394 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-22 00:43:59,394 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-22 00:43:59,394 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-22 00:43:59,395 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-22 00:43:59,395 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-22 00:43:59,395 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-22 00:43:59,395 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-22 00:43:59,395 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-22 00:43:59,395 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-22 00:43:59,395 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-22 00:43:59,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:43:59 BoogieIcfgContainer [2020-08-22 00:43:59,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:43:59,430 INFO L168 Benchmark]: Toolchain (without parser) took 6408.86 ms. Allocated memory was 141.0 MB in the beginning and 276.3 MB in the end (delta: 135.3 MB). Free memory was 104.8 MB in the beginning and 158.7 MB in the end (delta: -53.8 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:59,433 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:43:59,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.49 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 92.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:59,440 INFO L168 Benchmark]: Boogie Preprocessor took 116.75 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 91.8 MB in the beginning and 179.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:59,443 INFO L168 Benchmark]: RCFGBuilder took 430.89 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 155.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:59,444 INFO L168 Benchmark]: TraceAbstraction took 5518.59 ms. Allocated memory was 202.4 MB in the beginning and 276.3 MB in the end (delta: 73.9 MB). Free memory was 154.6 MB in the beginning and 158.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:59,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.49 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 92.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.75 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 91.8 MB in the beginning and 179.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.89 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 155.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5518.59 ms. Allocated memory was 202.4 MB in the beginning and 276.3 MB in the end (delta: 73.9 MB). Free memory was 154.6 MB in the beginning and 158.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 69.8 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: 5.0s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.1s, 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, 1.8s 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, 1.1s 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...