/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:04:45,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:04:45,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:04:45,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:04:45,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:04:45,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:04:45,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:04:45,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:04:45,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:04:45,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:04:45,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:04:45,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:04:45,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:04:45,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:04:45,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:04:45,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:04:45,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:04:45,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:04:45,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:04:45,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:04:45,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:04:45,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:04:45,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:04:45,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:04:45,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:04:45,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:04:45,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:04:45,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:04:45,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:04:45,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 19:04:45,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:04:45,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:04:45,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:04:45,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:04:45,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:04:45,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:04:45,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:04:45,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:04:45,626 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:04:45,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:04:45,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:04:45,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:04:45,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:04:45,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:04:45,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:04:45,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:04:45,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:04:45,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:04:45,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:04:45,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:04:45,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:04:45,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:04:45,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:04:45,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:04:45,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:04:45,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:04:45,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:04:45,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:04:45,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:04:45,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:04:45,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:04:45,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:04:45,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:04:45,631 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:04:45,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:04:45,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:04:45,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:04:45,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:04:45,998 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:04:45,999 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-21 19:04:46,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff7b4ebc1/8fb8023bcf6a46e5b41a233f13992866/FLAGf9c909715 [2020-08-21 19:04:46,506 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:04:46,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-21 19:04:46,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff7b4ebc1/8fb8023bcf6a46e5b41a233f13992866/FLAGf9c909715 [2020-08-21 19:04:46,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff7b4ebc1/8fb8023bcf6a46e5b41a233f13992866 [2020-08-21 19:04:46,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:04:46,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:04:46,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:04:46,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:04:46,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:04:46,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:04:46" (1/1) ... [2020-08-21 19:04:46,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d71150d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:46, skipping insertion in model container [2020-08-21 19:04:46,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:04:46" (1/1) ... [2020-08-21 19:04:46,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:04:46,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:04:47,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:04:47,191 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:04:47,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:04:47,243 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:04:47,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47 WrapperNode [2020-08-21 19:04:47,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:04:47,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:04:47,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:04:47,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:04:47,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:04:47,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:04:47,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:04:47,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:04:47,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:04:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:04:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:04:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:04:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:04:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:04:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:04:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:04:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:04:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:04:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:04:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:04:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:04:47,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:04:47,870 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 19:04:47,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:47 BoogieIcfgContainer [2020-08-21 19:04:47,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:04:47,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:04:47,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:04:47,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:04:47,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:04:46" (1/3) ... [2020-08-21 19:04:47,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1f3f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:47, skipping insertion in model container [2020-08-21 19:04:47,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (2/3) ... [2020-08-21 19:04:47,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1f3f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:47, skipping insertion in model container [2020-08-21 19:04:47,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:47" (3/3) ... [2020-08-21 19:04:47,884 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-21 19:04:47,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:04:47,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-21 19:04:47,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-21 19:04:47,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:04:47,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:04:47,947 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:04:47,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:04:47,947 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:04:47,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:04:47,947 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:04:47,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:04:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-21 19:04:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 19:04:47,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:47,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:47,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:47,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:47,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-21 19:04:47,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:47,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535018777] [2020-08-21 19:04:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:48,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535018777] [2020-08-21 19:04:48,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:48,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:48,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196957842] [2020-08-21 19:04:48,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:48,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:48,315 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-21 19:04:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:48,760 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-21 19:04:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:04:48,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-21 19:04:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:48,780 INFO L225 Difference]: With dead ends: 137 [2020-08-21 19:04:48,780 INFO L226 Difference]: Without dead ends: 113 [2020-08-21 19:04:48,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:04:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-21 19:04:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-21 19:04:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 19:04:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-21 19:04:48,881 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-21 19:04:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:48,883 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-21 19:04:48,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-21 19:04:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 19:04:48,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:48,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:48,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:04:48,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:48,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-21 19:04:48,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:48,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663899026] [2020-08-21 19:04:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:48,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663899026] [2020-08-21 19:04:48,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:48,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:48,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442073321] [2020-08-21 19:04:48,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:48,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:48,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:48,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:48,964 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-21 19:04:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:49,133 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-21 19:04:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:49,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-21 19:04:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:49,136 INFO L225 Difference]: With dead ends: 69 [2020-08-21 19:04:49,136 INFO L226 Difference]: Without dead ends: 67 [2020-08-21 19:04:49,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-21 19:04:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-21 19:04:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-21 19:04:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-21 19:04:49,146 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-21 19:04:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:49,146 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-21 19:04:49,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-21 19:04:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 19:04:49,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:49,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:49,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:04:49,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-21 19:04:49,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:49,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489103133] [2020-08-21 19:04:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:49,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489103133] [2020-08-21 19:04:49,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:49,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:49,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557796726] [2020-08-21 19:04:49,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:49,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:49,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:49,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:49,248 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-21 19:04:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:49,414 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-21 19:04:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:49,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 19:04:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:49,416 INFO L225 Difference]: With dead ends: 73 [2020-08-21 19:04:49,416 INFO L226 Difference]: Without dead ends: 71 [2020-08-21 19:04:49,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-21 19:04:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-21 19:04:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-21 19:04:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-21 19:04:49,426 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-21 19:04:49,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:49,427 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-21 19:04:49,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-21 19:04:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 19:04:49,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:49,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:49,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:04:49,429 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:49,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-21 19:04:49,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:49,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967668731] [2020-08-21 19:04:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:49,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967668731] [2020-08-21 19:04:49,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:49,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:49,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921978950] [2020-08-21 19:04:49,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:49,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:49,571 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-21 19:04:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:49,764 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-21 19:04:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:49,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 19:04:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:49,766 INFO L225 Difference]: With dead ends: 71 [2020-08-21 19:04:49,766 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 19:04:49,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:04:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 19:04:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-21 19:04:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 19:04:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-21 19:04:49,788 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-21 19:04:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:49,789 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-21 19:04:49,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-21 19:04:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 19:04:49,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:49,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:49,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:04:49,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-21 19:04:49,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:49,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111046206] [2020-08-21 19:04:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:49,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111046206] [2020-08-21 19:04:49,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:49,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:49,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367875445] [2020-08-21 19:04:49,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:49,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:49,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:49,912 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-21 19:04:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:50,072 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-21 19:04:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:50,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 19:04:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:50,081 INFO L225 Difference]: With dead ends: 69 [2020-08-21 19:04:50,081 INFO L226 Difference]: Without dead ends: 67 [2020-08-21 19:04:50,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:04:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-21 19:04:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-21 19:04:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-21 19:04:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-21 19:04:50,088 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-21 19:04:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:50,089 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-21 19:04:50,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-21 19:04:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 19:04:50,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:50,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:50,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:04:50,091 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:50,091 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-21 19:04:50,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:50,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675217144] [2020-08-21 19:04:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:50,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675217144] [2020-08-21 19:04:50,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:50,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:50,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420055921] [2020-08-21 19:04:50,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:50,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:50,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:50,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:50,149 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-21 19:04:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:50,384 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-21 19:04:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:50,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-21 19:04:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:50,386 INFO L225 Difference]: With dead ends: 112 [2020-08-21 19:04:50,386 INFO L226 Difference]: Without dead ends: 110 [2020-08-21 19:04:50,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:04:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-21 19:04:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-21 19:04:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-21 19:04:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-21 19:04:50,394 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-21 19:04:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:50,394 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-21 19:04:50,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-21 19:04:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 19:04:50,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:50,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:50,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:04:50,396 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:50,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:50,397 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-21 19:04:50,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:50,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970801576] [2020-08-21 19:04:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:50,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970801576] [2020-08-21 19:04:50,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:50,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:50,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314448595] [2020-08-21 19:04:50,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:50,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:50,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:50,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:50,448 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-21 19:04:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:50,569 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-21 19:04:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:50,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 19:04:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:50,571 INFO L225 Difference]: With dead ends: 65 [2020-08-21 19:04:50,571 INFO L226 Difference]: Without dead ends: 61 [2020-08-21 19:04:50,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-21 19:04:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-21 19:04:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-21 19:04:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-21 19:04:50,577 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-21 19:04:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:50,577 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-21 19:04:50,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-21 19:04:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 19:04:50,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:50,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:50,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:04:50,579 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:50,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-21 19:04:50,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:50,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319288202] [2020-08-21 19:04:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:50,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319288202] [2020-08-21 19:04:50,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:50,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:50,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018930112] [2020-08-21 19:04:50,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:50,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:50,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:50,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:50,625 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-21 19:04:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:50,738 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-21 19:04:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:50,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 19:04:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:50,739 INFO L225 Difference]: With dead ends: 61 [2020-08-21 19:04:50,739 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 19:04:50,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 19:04:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-21 19:04:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 19:04:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-21 19:04:50,745 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-21 19:04:50,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:50,745 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-21 19:04:50,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-21 19:04:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:04:50,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:50,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:50,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:04:50,747 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-21 19:04:50,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:50,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276157939] [2020-08-21 19:04:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:50,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276157939] [2020-08-21 19:04:50,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:50,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:04:50,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218440935] [2020-08-21 19:04:50,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:04:50,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:50,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:04:50,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:50,877 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-21 19:04:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:51,126 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-21 19:04:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:04:51,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-21 19:04:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:51,128 INFO L225 Difference]: With dead ends: 95 [2020-08-21 19:04:51,128 INFO L226 Difference]: Without dead ends: 93 [2020-08-21 19:04:51,129 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 [2020-08-21 19:04:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-21 19:04:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-21 19:04:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 19:04:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-21 19:04:51,133 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-21 19:04:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:51,134 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-21 19:04:51,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:04:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-21 19:04:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:04:51,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:51,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:51,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:04:51,136 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:51,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-21 19:04:51,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:51,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959789361] [2020-08-21 19:04:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:51,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959789361] [2020-08-21 19:04:51,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:51,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:51,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713879364] [2020-08-21 19:04:51,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:51,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:51,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:51,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:51,182 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-21 19:04:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:51,346 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-21 19:04:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:51,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 19:04:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:51,348 INFO L225 Difference]: With dead ends: 72 [2020-08-21 19:04:51,348 INFO L226 Difference]: Without dead ends: 70 [2020-08-21 19:04:51,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:04:51,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-21 19:04:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-21 19:04:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 19:04:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-21 19:04:51,354 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-21 19:04:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:51,354 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-21 19:04:51,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-21 19:04:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:04:51,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:51,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:51,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:04:51,356 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:51,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-21 19:04:51,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:51,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658455761] [2020-08-21 19:04:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:51,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658455761] [2020-08-21 19:04:51,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:51,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:51,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163169957] [2020-08-21 19:04:51,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:51,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:51,414 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-21 19:04:51,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:51,548 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-21 19:04:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:51,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 19:04:51,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:51,550 INFO L225 Difference]: With dead ends: 53 [2020-08-21 19:04:51,550 INFO L226 Difference]: Without dead ends: 51 [2020-08-21 19:04:51,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:04:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-21 19:04:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-21 19:04:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-21 19:04:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-21 19:04:51,557 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-21 19:04:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:51,557 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-21 19:04:51,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-21 19:04:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:04:51,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:51,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:51,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:04:51,559 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:51,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:51,559 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-21 19:04:51,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:51,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121229173] [2020-08-21 19:04:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:51,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121229173] [2020-08-21 19:04:51,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:51,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:04:51,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682190004] [2020-08-21 19:04:51,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:04:51,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:51,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:04:51,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:51,641 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-21 19:04:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:51,774 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-21 19:04:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:04:51,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-21 19:04:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:51,775 INFO L225 Difference]: With dead ends: 50 [2020-08-21 19:04:51,776 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 19:04:51,776 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 [2020-08-21 19:04:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 19:04:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-21 19:04:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-21 19:04:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-21 19:04:51,780 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-21 19:04:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:51,781 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-21 19:04:51,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:04:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-21 19:04:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:04:51,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:51,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:51,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:04:51,782 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:51,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-21 19:04:51,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:51,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327207601] [2020-08-21 19:04:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:51,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327207601] [2020-08-21 19:04:51,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:51,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:51,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730272031] [2020-08-21 19:04:51,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:51,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:51,828 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-21 19:04:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:51,980 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-21 19:04:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:51,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 19:04:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:51,982 INFO L225 Difference]: With dead ends: 69 [2020-08-21 19:04:51,982 INFO L226 Difference]: Without dead ends: 67 [2020-08-21 19:04:51,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:04:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-21 19:04:51,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-21 19:04:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 19:04:51,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-21 19:04:51,986 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-21 19:04:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:51,986 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-21 19:04:51,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-21 19:04:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:04:51,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:51,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:51,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 19:04:51,988 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:51,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:51,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-21 19:04:51,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:51,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401772067] [2020-08-21 19:04:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:52,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401772067] [2020-08-21 19:04:52,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:52,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:52,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903912175] [2020-08-21 19:04:52,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:52,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:52,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:52,057 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-21 19:04:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:52,242 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-21 19:04:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:04:52,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 19:04:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:52,244 INFO L225 Difference]: With dead ends: 57 [2020-08-21 19:04:52,244 INFO L226 Difference]: Without dead ends: 55 [2020-08-21 19:04:52,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:04:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-21 19:04:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-21 19:04:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 19:04:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-21 19:04:52,248 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-21 19:04:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:52,248 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-21 19:04:52,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-21 19:04:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:04:52,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:52,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:52,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 19:04:52,250 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:52,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:52,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-21 19:04:52,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:52,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329181049] [2020-08-21 19:04:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:52,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329181049] [2020-08-21 19:04:52,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:52,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:52,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600634454] [2020-08-21 19:04:52,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:52,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:52,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:52,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:52,310 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-21 19:04:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:52,428 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-21 19:04:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:04:52,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 19:04:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:52,429 INFO L225 Difference]: With dead ends: 41 [2020-08-21 19:04:52,429 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 19:04:52,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:04:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 19:04:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 19:04:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 19:04:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-21 19:04:52,434 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-21 19:04:52,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:52,434 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-21 19:04:52,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-21 19:04:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 19:04:52,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:52,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:52,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 19:04:52,436 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:52,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-21 19:04:52,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:52,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32712877] [2020-08-21 19:04:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:52,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32712877] [2020-08-21 19:04:52,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:52,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:52,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269266483] [2020-08-21 19:04:52,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:52,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:52,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:52,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:52,495 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-21 19:04:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:52,642 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-21 19:04:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:04:52,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-21 19:04:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:52,644 INFO L225 Difference]: With dead ends: 52 [2020-08-21 19:04:52,644 INFO L226 Difference]: Without dead ends: 50 [2020-08-21 19:04:52,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:04:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-21 19:04:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-21 19:04:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 19:04:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-21 19:04:52,648 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-21 19:04:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:52,649 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-21 19:04:52,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-21 19:04:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 19:04:52,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:52,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:52,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 19:04:52,650 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:52,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:52,651 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-21 19:04:52,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:52,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426538185] [2020-08-21 19:04:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:52,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426538185] [2020-08-21 19:04:52,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:52,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:52,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323885091] [2020-08-21 19:04:52,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:52,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:52,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:52,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:52,692 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-21 19:04:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:52,768 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-21 19:04:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:52,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 19:04:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:52,769 INFO L225 Difference]: With dead ends: 35 [2020-08-21 19:04:52,769 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 19:04:52,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 19:04:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-21 19:04:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 19:04:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 19:04:52,774 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-21 19:04:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:52,774 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 19:04:52,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 19:04:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 19:04:52,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:52,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:52,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 19:04:52,776 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:52,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:52,776 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-21 19:04:52,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:52,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674395813] [2020-08-21 19:04:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:04:52,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674395813] [2020-08-21 19:04:52,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:52,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:52,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478450491] [2020-08-21 19:04:52,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:52,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:52,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:52,819 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-21 19:04:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:52,919 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-21 19:04:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:52,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 19:04:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:52,920 INFO L225 Difference]: With dead ends: 37 [2020-08-21 19:04:52,920 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:04:52,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:04:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:04:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:04:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:04:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:04:52,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-21 19:04:52,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:52,924 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:04:52,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:04:52,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:04:52,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 19:04:52,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:04:53,247 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:04:53,248 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= ~__tmp_247_0~0 |old(~__tmp_247_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_305~0 |old(~__return_305~0)|)) [2020-08-21 19:04:53,248 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:04:53,248 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:04:53,248 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 19:04:53,248 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-21 19:04:53,249 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-21 19:04:53,250 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-21 19:04:53,251 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-21 19:04:53,251 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-21 19:04:53,251 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-21 19:04:53,251 INFO L264 CegarLoopResult]: At program point L326(lines 30 366) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-21 19:04:53,251 INFO L264 CegarLoopResult]: At program point L194(lines 58 252) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-21 19:04:53,251 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-21 19:04:53,252 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-21 19:04:53,252 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-21 19:04:53,252 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-21 19:04:53,252 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-21 19:04:53,252 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-21 19:04:53,252 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-21 19:04:53,252 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-21 19:04:53,253 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-21 19:04:53,253 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-21 19:04:53,253 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-21 19:04:53,253 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-21 19:04:53,253 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 373) the Hoare annotation is: (and (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-08-21 19:04:53,253 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-21 19:04:53,253 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-21 19:04:53,254 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-21 19:04:53,255 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-21 19:04:53,255 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-21 19:04:53,255 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-21 19:04:53,255 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-21 19:04:53,255 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-21 19:04:53,255 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-21 19:04:53,255 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-21 19:04:53,255 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-21 19:04:53,256 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-21 19:04:53,256 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-21 19:04:53,256 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-21 19:04:53,256 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-21 19:04:53,256 INFO L264 CegarLoopResult]: At program point L355(lines 281 362) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-08-21 19:04:53,256 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-21 19:04:53,256 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-21 19:04:53,257 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-21 19:04:53,257 INFO L264 CegarLoopResult]: At program point L248(lines 100 250) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-21 19:04:53,257 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-21 19:04:53,257 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-21 19:04:53,257 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-21 19:04:53,257 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-21 19:04:53,257 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-21 19:04:53,257 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-21 19:04:53,258 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-21 19:04:53,258 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-21 19:04:53,258 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-21 19:04:53,258 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-21 19:04:53,258 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-21 19:04:53,258 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-21 19:04:53,258 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-21 19:04:53,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:04:53 BoogieIcfgContainer [2020-08-21 19:04:53,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:04:53,284 INFO L168 Benchmark]: Toolchain (without parser) took 6415.64 ms. Allocated memory was 138.9 MB in the beginning and 287.3 MB in the end (delta: 148.4 MB). Free memory was 102.0 MB in the beginning and 218.2 MB in the end (delta: -116.2 MB). Peak memory consumption was 156.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:53,285 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:04:53,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.02 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 89.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:53,286 INFO L168 Benchmark]: Boogie Preprocessor took 132.00 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 89.1 MB in the beginning and 177.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:53,287 INFO L168 Benchmark]: RCFGBuilder took 499.06 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 152.5 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:53,287 INFO L168 Benchmark]: TraceAbstraction took 5404.43 ms. Allocated memory was 200.8 MB in the beginning and 287.3 MB in the end (delta: 86.5 MB). Free memory was 152.5 MB in the beginning and 218.2 MB in the end (delta: -65.7 MB). Peak memory consumption was 145.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:53,290 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.02 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 89.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.00 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 89.1 MB in the beginning and 177.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.06 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 152.5 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5404.43 ms. Allocated memory was 200.8 MB in the beginning and 287.3 MB in the end (delta: 86.5 MB). Free memory was 152.5 MB in the beginning and 218.2 MB in the end (delta: -65.7 MB). Peak memory consumption was 145.2 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: 4.9s, 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, 1.0s 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...