/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:59:53,366 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-09-24 14:59:53,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:59:53,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:59:53,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:59:53,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:59:53,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:59:53,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:59:53,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:59:53,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:59:53,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:59:53,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:59:53,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:59:53,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:59:53,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:59:53,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:59:53,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:59:53,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:59:53,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:59:53,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:59:53,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:59:53,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:59:53,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:59:53,460 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:59:53,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:59:53,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:59:53,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:59:53,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:59:53,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:59:53,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:59:53,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:59:53,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:59:53,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:59:53,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:59:53,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:59:53,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:59:53,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:59:53,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:59:53,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:59:53,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:59:53,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:59:53,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:59:53,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:59:53,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:59:53,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:59:53,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:59:53,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:59:53,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:59:53,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:59:53,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:59:53,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:59:53,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:59:53,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:59:53,966 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:59:53,968 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-24 14:59:54,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da2b239c3/c7926fcb801f4927a533ea5f0f9dac8a/FLAG680391a42 [2020-09-24 14:59:54,703 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:59:54,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-24 14:59:54,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da2b239c3/c7926fcb801f4927a533ea5f0f9dac8a/FLAG680391a42 [2020-09-24 14:59:54,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da2b239c3/c7926fcb801f4927a533ea5f0f9dac8a [2020-09-24 14:59:54,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:59:54,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:59:54,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:59:54,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:59:54,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:59:54,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:59:54" (1/1) ... [2020-09-24 14:59:54,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c20f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:54, skipping insertion in model container [2020-09-24 14:59:54,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:59:54" (1/1) ... [2020-09-24 14:59:54,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:59:55,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:59:55,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:59:55,609 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:59:55,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:59:55,770 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:59:55,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55 WrapperNode [2020-09-24 14:59:55,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:59:55,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:59:55,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:59:55,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:59:55,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... [2020-09-24 14:59:55,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... [2020-09-24 14:59:55,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... [2020-09-24 14:59:55,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... [2020-09-24 14:59:55,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... [2020-09-24 14:59:55,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... [2020-09-24 14:59:55,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... [2020-09-24 14:59:55,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:59:55,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:59:55,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:59:55,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:59:55,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:59:56,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:59:56,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:59:56,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 14:59:56,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:59:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 14:59:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:59:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:59:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 14:59:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:59:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:59:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:59:57,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:59:57,504 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:59:57,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:59:57 BoogieIcfgContainer [2020-09-24 14:59:57,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:59:57,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:59:57,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:59:57,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:59:57,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:59:54" (1/3) ... [2020-09-24 14:59:57,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2242a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:59:57, skipping insertion in model container [2020-09-24 14:59:57,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:55" (2/3) ... [2020-09-24 14:59:57,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2242a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:59:57, skipping insertion in model container [2020-09-24 14:59:57,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:59:57" (3/3) ... [2020-09-24 14:59:57,525 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-24 14:59:57,538 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:59:57,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:59:57,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:59:57,609 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:59:57,610 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:59:57,610 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:59:57,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:59:57,610 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:59:57,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:59:57,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:59:57,611 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:59:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 14:59:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 14:59:57,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:57,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:57,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-24 14:59:57,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:57,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755525311] [2020-09-24 14:59:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:59:58,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755525311] [2020-09-24 14:59:58,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:59:58,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:59:58,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521556633] [2020-09-24 14:59:58,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:59:58,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:58,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:59:58,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:59:58,527 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 15:00:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:01,510 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-24 15:00:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:00:01,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-24 15:00:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:01,540 INFO L225 Difference]: With dead ends: 1360 [2020-09-24 15:00:01,540 INFO L226 Difference]: Without dead ends: 781 [2020-09-24 15:00:01,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:00:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-24 15:00:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-24 15:00:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-24 15:00:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 932 transitions. [2020-09-24 15:00:01,675 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 932 transitions. Word has length 144 [2020-09-24 15:00:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:01,676 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 932 transitions. [2020-09-24 15:00:01,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:00:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 932 transitions. [2020-09-24 15:00:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-24 15:00:01,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:01,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:01,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:00:01,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1235003416, now seen corresponding path program 1 times [2020-09-24 15:00:01,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:01,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142980574] [2020-09-24 15:00:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:02,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:02,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:00:02,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142980574] [2020-09-24 15:00:02,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:02,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 15:00:02,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021358594] [2020-09-24 15:00:02,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:00:02,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:02,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:00:02,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:00:02,117 INFO L87 Difference]: Start difference. First operand 746 states and 932 transitions. Second operand 5 states. [2020-09-24 15:00:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:04,141 INFO L93 Difference]: Finished difference Result 1955 states and 2547 transitions. [2020-09-24 15:00:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:00:04,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-24 15:00:04,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:04,157 INFO L225 Difference]: With dead ends: 1955 [2020-09-24 15:00:04,157 INFO L226 Difference]: Without dead ends: 1233 [2020-09-24 15:00:04,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:00:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-24 15:00:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1034. [2020-09-24 15:00:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-24 15:00:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1301 transitions. [2020-09-24 15:00:04,212 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1301 transitions. Word has length 174 [2020-09-24 15:00:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:04,213 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1301 transitions. [2020-09-24 15:00:04,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:00:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1301 transitions. [2020-09-24 15:00:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-24 15:00:04,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:04,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:04,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:00:04,222 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:04,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1424315467, now seen corresponding path program 1 times [2020-09-24 15:00:04,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:04,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625416413] [2020-09-24 15:00:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:04,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 15:00:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 15:00:04,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625416413] [2020-09-24 15:00:04,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:04,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:00:04,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024673188] [2020-09-24 15:00:04,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:00:04,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:04,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:00:04,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:00:04,537 INFO L87 Difference]: Start difference. First operand 1034 states and 1301 transitions. Second operand 7 states. [2020-09-24 15:00:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:07,524 INFO L93 Difference]: Finished difference Result 2796 states and 3651 transitions. [2020-09-24 15:00:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 15:00:07,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-09-24 15:00:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:07,538 INFO L225 Difference]: With dead ends: 2796 [2020-09-24 15:00:07,539 INFO L226 Difference]: Without dead ends: 1786 [2020-09-24 15:00:07,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:00:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-09-24 15:00:07,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1699. [2020-09-24 15:00:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-09-24 15:00:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2093 transitions. [2020-09-24 15:00:07,618 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2093 transitions. Word has length 221 [2020-09-24 15:00:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:07,619 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2093 transitions. [2020-09-24 15:00:07,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:00:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2093 transitions. [2020-09-24 15:00:07,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-24 15:00:07,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:07,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:07,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:00:07,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:07,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1287774819, now seen corresponding path program 1 times [2020-09-24 15:00:07,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:07,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713616412] [2020-09-24 15:00:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:07,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:07,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:07,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 15:00:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 15:00:07,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713616412] [2020-09-24 15:00:07,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:07,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:00:07,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772030650] [2020-09-24 15:00:07,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:00:07,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:07,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:00:07,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:00:07,933 INFO L87 Difference]: Start difference. First operand 1699 states and 2093 transitions. Second operand 7 states. [2020-09-24 15:00:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:10,218 INFO L93 Difference]: Finished difference Result 3980 states and 5073 transitions. [2020-09-24 15:00:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:00:10,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-24 15:00:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:10,233 INFO L225 Difference]: With dead ends: 3980 [2020-09-24 15:00:10,234 INFO L226 Difference]: Without dead ends: 2305 [2020-09-24 15:00:10,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:00:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-09-24 15:00:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1773. [2020-09-24 15:00:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-09-24 15:00:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2136 transitions. [2020-09-24 15:00:10,320 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2136 transitions. Word has length 222 [2020-09-24 15:00:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:10,320 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2136 transitions. [2020-09-24 15:00:10,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:00:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2136 transitions. [2020-09-24 15:00:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 15:00:10,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:10,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:10,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:00:10,332 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:10,332 INFO L82 PathProgramCache]: Analyzing trace with hash 655222966, now seen corresponding path program 1 times [2020-09-24 15:00:10,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:10,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578407543] [2020-09-24 15:00:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 15:00:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 15:00:10,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578407543] [2020-09-24 15:00:10,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:10,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 15:00:10,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491973054] [2020-09-24 15:00:10,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:00:10,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:10,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:00:10,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:00:10,690 INFO L87 Difference]: Start difference. First operand 1773 states and 2136 transitions. Second operand 6 states. [2020-09-24 15:00:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:12,936 INFO L93 Difference]: Finished difference Result 3389 states and 4163 transitions. [2020-09-24 15:00:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 15:00:12,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-09-24 15:00:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:12,957 INFO L225 Difference]: With dead ends: 3389 [2020-09-24 15:00:12,957 INFO L226 Difference]: Without dead ends: 3387 [2020-09-24 15:00:12,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:00:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2020-09-24 15:00:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2422. [2020-09-24 15:00:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-09-24 15:00:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 2937 transitions. [2020-09-24 15:00:13,045 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 2937 transitions. Word has length 228 [2020-09-24 15:00:13,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:13,046 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 2937 transitions. [2020-09-24 15:00:13,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:00:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 2937 transitions. [2020-09-24 15:00:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 15:00:13,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:13,059 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:13,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:00:13,059 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1328956802, now seen corresponding path program 1 times [2020-09-24 15:00:13,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:13,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867525282] [2020-09-24 15:00:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:13,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:13,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 15:00:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 15:00:13,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867525282] [2020-09-24 15:00:13,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:13,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:00:13,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542620363] [2020-09-24 15:00:13,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:00:13,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:13,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:00:13,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:00:13,384 INFO L87 Difference]: Start difference. First operand 2422 states and 2937 transitions. Second operand 8 states. [2020-09-24 15:00:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:16,454 INFO L93 Difference]: Finished difference Result 6681 states and 8311 transitions. [2020-09-24 15:00:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 15:00:16,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-09-24 15:00:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:16,482 INFO L225 Difference]: With dead ends: 6681 [2020-09-24 15:00:16,482 INFO L226 Difference]: Without dead ends: 4283 [2020-09-24 15:00:16,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:00:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2020-09-24 15:00:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3661. [2020-09-24 15:00:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3661 states. [2020-09-24 15:00:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 4433 transitions. [2020-09-24 15:00:16,615 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 4433 transitions. Word has length 229 [2020-09-24 15:00:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:16,615 INFO L479 AbstractCegarLoop]: Abstraction has 3661 states and 4433 transitions. [2020-09-24 15:00:16,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:00:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 4433 transitions. [2020-09-24 15:00:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 15:00:16,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:16,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:16,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:00:16,634 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash 582092877, now seen corresponding path program 1 times [2020-09-24 15:00:16,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:16,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905794732] [2020-09-24 15:00:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:16,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:00:17,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905794732] [2020-09-24 15:00:17,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:17,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 15:00:17,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564516891] [2020-09-24 15:00:17,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:00:17,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:17,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:00:17,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:00:17,074 INFO L87 Difference]: Start difference. First operand 3661 states and 4433 transitions. Second operand 5 states. [2020-09-24 15:00:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:18,935 INFO L93 Difference]: Finished difference Result 8340 states and 10259 transitions. [2020-09-24 15:00:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:00:18,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-09-24 15:00:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:18,957 INFO L225 Difference]: With dead ends: 8340 [2020-09-24 15:00:18,957 INFO L226 Difference]: Without dead ends: 4703 [2020-09-24 15:00:18,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:00:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2020-09-24 15:00:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4512. [2020-09-24 15:00:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4512 states. [2020-09-24 15:00:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 5414 transitions. [2020-09-24 15:00:19,106 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 5414 transitions. Word has length 230 [2020-09-24 15:00:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:19,107 INFO L479 AbstractCegarLoop]: Abstraction has 4512 states and 5414 transitions. [2020-09-24 15:00:19,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:00:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 5414 transitions. [2020-09-24 15:00:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-09-24 15:00:19,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:19,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:19,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:00:19,128 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:19,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1876998313, now seen corresponding path program 1 times [2020-09-24 15:00:19,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:19,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575445389] [2020-09-24 15:00:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:19,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 15:00:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 15:00:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:19,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 15:00:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 15:00:19,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575445389] [2020-09-24 15:00:19,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:19,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:00:19,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059499251] [2020-09-24 15:00:19,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:00:19,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:00:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:00:19,505 INFO L87 Difference]: Start difference. First operand 4512 states and 5414 transitions. Second operand 8 states. [2020-09-24 15:00:19,732 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 15:00:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:22,750 INFO L93 Difference]: Finished difference Result 10700 states and 12936 transitions. [2020-09-24 15:00:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:00:22,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-09-24 15:00:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:22,774 INFO L225 Difference]: With dead ends: 10700 [2020-09-24 15:00:22,775 INFO L226 Difference]: Without dead ends: 5634 [2020-09-24 15:00:22,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:00:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2020-09-24 15:00:22,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5628. [2020-09-24 15:00:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2020-09-24 15:00:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 6421 transitions. [2020-09-24 15:00:22,935 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 6421 transitions. Word has length 288 [2020-09-24 15:00:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:22,936 INFO L479 AbstractCegarLoop]: Abstraction has 5628 states and 6421 transitions. [2020-09-24 15:00:22,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:00:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 6421 transitions. [2020-09-24 15:00:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-24 15:00:22,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:22,957 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:22,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:00:22,958 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:22,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1023260744, now seen corresponding path program 1 times [2020-09-24 15:00:22,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:22,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059807011] [2020-09-24 15:00:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:23,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 15:00:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 15:00:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:23,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 15:00:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:00:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 202 proven. 32 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-09-24 15:00:23,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059807011] [2020-09-24 15:00:23,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:23,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:00:23,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493453795] [2020-09-24 15:00:23,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:00:23,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:23,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:00:23,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:00:23,456 INFO L87 Difference]: Start difference. First operand 5628 states and 6421 transitions. Second operand 8 states. [2020-09-24 15:00:23,804 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-09-24 15:00:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:25,790 INFO L93 Difference]: Finished difference Result 10624 states and 12115 transitions. [2020-09-24 15:00:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:00:25,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-09-24 15:00:25,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:25,817 INFO L225 Difference]: With dead ends: 10624 [2020-09-24 15:00:25,817 INFO L226 Difference]: Without dead ends: 6260 [2020-09-24 15:00:25,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:00:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2020-09-24 15:00:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 4804. [2020-09-24 15:00:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4804 states. [2020-09-24 15:00:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 5393 transitions. [2020-09-24 15:00:25,951 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 5393 transitions. Word has length 313 [2020-09-24 15:00:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:25,951 INFO L479 AbstractCegarLoop]: Abstraction has 4804 states and 5393 transitions. [2020-09-24 15:00:25,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:00:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 5393 transitions. [2020-09-24 15:00:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-24 15:00:25,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:25,970 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:25,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:00:25,971 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 147431633, now seen corresponding path program 1 times [2020-09-24 15:00:25,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:25,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612581001] [2020-09-24 15:00:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 15:00:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 15:00:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 15:00:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 15:00:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 176 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-09-24 15:00:26,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612581001] [2020-09-24 15:00:26,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:26,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:00:26,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630422224] [2020-09-24 15:00:26,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:00:26,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:26,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:00:26,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:00:26,396 INFO L87 Difference]: Start difference. First operand 4804 states and 5393 transitions. Second operand 8 states. [2020-09-24 15:00:27,716 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 15:00:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:29,357 INFO L93 Difference]: Finished difference Result 9875 states and 11090 transitions. [2020-09-24 15:00:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:00:29,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 327 [2020-09-24 15:00:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:29,374 INFO L225 Difference]: With dead ends: 9875 [2020-09-24 15:00:29,374 INFO L226 Difference]: Without dead ends: 5236 [2020-09-24 15:00:29,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:00:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2020-09-24 15:00:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 5126. [2020-09-24 15:00:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5126 states. [2020-09-24 15:00:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 5722 transitions. [2020-09-24 15:00:29,501 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 5722 transitions. Word has length 327 [2020-09-24 15:00:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:29,502 INFO L479 AbstractCegarLoop]: Abstraction has 5126 states and 5722 transitions. [2020-09-24 15:00:29,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:00:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 5722 transitions. [2020-09-24 15:00:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-09-24 15:00:29,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:29,570 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:29,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 15:00:29,570 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1671769717, now seen corresponding path program 1 times [2020-09-24 15:00:29,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:29,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800413962] [2020-09-24 15:00:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 15:00:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:29,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 15:00:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:29,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 15:00:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:30,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-09-24 15:00:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 344 proven. 22 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-24 15:00:30,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800413962] [2020-09-24 15:00:30,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:30,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 15:00:30,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853442006] [2020-09-24 15:00:30,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 15:00:30,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:30,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 15:00:30,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:00:30,341 INFO L87 Difference]: Start difference. First operand 5126 states and 5722 transitions. Second operand 17 states. [2020-09-24 15:00:31,087 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-09-24 15:00:31,400 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-24 15:00:33,488 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 15:00:33,750 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-09-24 15:00:34,616 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 15:00:35,022 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-24 15:00:35,551 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-09-24 15:00:35,932 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-09-24 15:00:37,747 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 15:00:38,561 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 15:00:39,159 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-09-24 15:00:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:40,579 INFO L93 Difference]: Finished difference Result 9293 states and 10426 transitions. [2020-09-24 15:00:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-24 15:00:40,579 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 360 [2020-09-24 15:00:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:40,593 INFO L225 Difference]: With dead ends: 9293 [2020-09-24 15:00:40,593 INFO L226 Difference]: Without dead ends: 4184 [2020-09-24 15:00:40,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=983, Invalid=3049, Unknown=0, NotChecked=0, Total=4032 [2020-09-24 15:00:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2020-09-24 15:00:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 3572. [2020-09-24 15:00:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3572 states. [2020-09-24 15:00:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 3888 transitions. [2020-09-24 15:00:40,721 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 3888 transitions. Word has length 360 [2020-09-24 15:00:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:40,722 INFO L479 AbstractCegarLoop]: Abstraction has 3572 states and 3888 transitions. [2020-09-24 15:00:40,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 15:00:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 3888 transitions. [2020-09-24 15:00:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-24 15:00:40,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:40,738 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:40,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 15:00:40,738 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:40,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1022547058, now seen corresponding path program 1 times [2020-09-24 15:00:40,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:40,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937522539] [2020-09-24 15:00:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:40,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 15:00:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:40,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 15:00:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 15:00:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-24 15:00:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 276 proven. 32 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-09-24 15:00:41,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937522539] [2020-09-24 15:00:41,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:41,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:00:41,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027520268] [2020-09-24 15:00:41,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:00:41,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:41,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:00:41,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:00:41,206 INFO L87 Difference]: Start difference. First operand 3572 states and 3888 transitions. Second operand 8 states. [2020-09-24 15:00:42,495 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-09-24 15:00:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:43,892 INFO L93 Difference]: Finished difference Result 7144 states and 7791 transitions. [2020-09-24 15:00:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:00:43,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 380 [2020-09-24 15:00:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:43,902 INFO L225 Difference]: With dead ends: 7144 [2020-09-24 15:00:43,902 INFO L226 Difference]: Without dead ends: 3588 [2020-09-24 15:00:43,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:00:43,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2020-09-24 15:00:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3576. [2020-09-24 15:00:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3576 states. [2020-09-24 15:00:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 3893 transitions. [2020-09-24 15:00:43,983 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 3893 transitions. Word has length 380 [2020-09-24 15:00:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:43,983 INFO L479 AbstractCegarLoop]: Abstraction has 3576 states and 3893 transitions. [2020-09-24 15:00:43,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:00:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 3893 transitions. [2020-09-24 15:00:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-09-24 15:00:43,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:43,997 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:43,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 15:00:43,998 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:43,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:43,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1361516454, now seen corresponding path program 1 times [2020-09-24 15:00:43,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:43,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666657546] [2020-09-24 15:00:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:44,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 15:00:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:00:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-24 15:00:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:44,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-24 15:00:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 280 proven. 102 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2020-09-24 15:00:44,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666657546] [2020-09-24 15:00:44,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:44,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:00:44,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450799602] [2020-09-24 15:00:44,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:00:44,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:44,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:00:44,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:00:44,481 INFO L87 Difference]: Start difference. First operand 3576 states and 3893 transitions. Second operand 7 states. [2020-09-24 15:00:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:00:46,368 INFO L93 Difference]: Finished difference Result 7075 states and 7697 transitions. [2020-09-24 15:00:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 15:00:46,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-09-24 15:00:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:00:46,379 INFO L225 Difference]: With dead ends: 7075 [2020-09-24 15:00:46,379 INFO L226 Difference]: Without dead ends: 3664 [2020-09-24 15:00:46,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:00:46,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2020-09-24 15:00:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3628. [2020-09-24 15:00:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3628 states. [2020-09-24 15:00:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 3898 transitions. [2020-09-24 15:00:46,451 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 3898 transitions. Word has length 398 [2020-09-24 15:00:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:00:46,451 INFO L479 AbstractCegarLoop]: Abstraction has 3628 states and 3898 transitions. [2020-09-24 15:00:46,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:00:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 3898 transitions. [2020-09-24 15:00:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-09-24 15:00:46,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:00:46,466 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:00:46,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 15:00:46,466 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:00:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:00:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash 145420448, now seen corresponding path program 1 times [2020-09-24 15:00:46,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:00:46,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178005246] [2020-09-24 15:00:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:00:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:46,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:00:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 15:00:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:00:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-24 15:00:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-09-24 15:00:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:47,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-09-24 15:00:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:00:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 316 proven. 32 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2020-09-24 15:00:47,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178005246] [2020-09-24 15:00:47,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:00:47,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:00:47,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178284972] [2020-09-24 15:00:47,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:00:47,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:00:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:00:47,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:00:47,385 INFO L87 Difference]: Start difference. First operand 3628 states and 3898 transitions. Second operand 8 states.