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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:44:01,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:44:01,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:44:01,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:44:01,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:44:01,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:44:01,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:44:01,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:44:01,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:44:01,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:44:01,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:44:01,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:44:01,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:44:01,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:44:01,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:44:01,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:44:01,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:44:01,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:44:01,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:44:01,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:44:01,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:44:01,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:44:01,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:44:01,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:44:01,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:44:01,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:44:01,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:44:01,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:44:01,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:44:01,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:44:01,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:44:01,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:44:01,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:44:01,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:44:01,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:44:01,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:44:01,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:44:01,371 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:44:01,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:44:01,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:44:01,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:44:01,373 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:44:01,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:44:01,373 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:44:01,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:44:01,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:44:01,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:44:01,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:44:01,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:44:01,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:44:01,375 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:44:01,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:44:01,375 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:44:01,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:44:01,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:44:01,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:44:01,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:44:01,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:44:01,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:44:01,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:44:01,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:44:01,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:44:01,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:44:01,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:44:01,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:44:01,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:44:01,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:44:01,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:44:01,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:44:01,684 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:44:01,684 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:44:01,685 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:44:01,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d8a1b48/768e95af6f4b4bf69a1b2aad1b2b9075/FLAG919561f0f [2019-10-14 23:44:02,338 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:44:02,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:44:02,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d8a1b48/768e95af6f4b4bf69a1b2aad1b2b9075/FLAG919561f0f [2019-10-14 23:44:02,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d8a1b48/768e95af6f4b4bf69a1b2aad1b2b9075 [2019-10-14 23:44:02,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:44:02,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:44:02,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:02,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:44:02,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:44:02,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:02" (1/1) ... [2019-10-14 23:44:02,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36eec1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02, skipping insertion in model container [2019-10-14 23:44:02,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:02" (1/1) ... [2019-10-14 23:44:02,631 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:44:02,705 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:44:03,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:03,399 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:44:03,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:03,818 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:44:03,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03 WrapperNode [2019-10-14 23:44:03,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:03,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:44:03,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:44:03,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:44:03,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:44:03,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:44:03,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:44:03,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:44:03,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-14 23:44:04,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:44:04,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:44:04,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:44:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:44:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:44:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:44:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:44:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:44:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:44:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:44:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:44:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:44:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:44:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:44:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:44:05,836 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:44:05,837 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:44:05,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:05 BoogieIcfgContainer [2019-10-14 23:44:05,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:44:05,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:44:05,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:44:05,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:44:05,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:02" (1/3) ... [2019-10-14 23:44:05,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ec242a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:05, skipping insertion in model container [2019-10-14 23:44:05,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (2/3) ... [2019-10-14 23:44:05,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ec242a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:05, skipping insertion in model container [2019-10-14 23:44:05,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:05" (3/3) ... [2019-10-14 23:44:05,847 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:44:05,858 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:44:05,868 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-14 23:44:05,880 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-14 23:44:05,913 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:44:05,914 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:44:05,914 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:44:05,914 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:44:05,914 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:44:05,914 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:44:05,915 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:44:05,915 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:44:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states. [2019-10-14 23:44:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:44:05,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:05,964 INFO L380 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] [2019-10-14 23:44:05,967 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:05,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1111774015, now seen corresponding path program 1 times [2019-10-14 23:44:05,985 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:05,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388265136] [2019-10-14 23:44:05,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:05,987 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:05,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:07,228 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:07,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388265136] [2019-10-14 23:44:07,300 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:07,301 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:07,301 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015389796] [2019-10-14 23:44:07,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:07,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:07,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:07,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:07,324 INFO L87 Difference]: Start difference. First operand 382 states. Second operand 5 states. [2019-10-14 23:44:11,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:11,288 INFO L93 Difference]: Finished difference Result 1107 states and 1990 transitions. [2019-10-14 23:44:11,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:44:11,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-14 23:44:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:11,348 INFO L225 Difference]: With dead ends: 1107 [2019-10-14 23:44:11,348 INFO L226 Difference]: Without dead ends: 730 [2019-10-14 23:44:11,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2019-10-14 23:44:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 705. [2019-10-14 23:44:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2019-10-14 23:44:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1008 transitions. [2019-10-14 23:44:11,499 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1008 transitions. Word has length 143 [2019-10-14 23:44:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:11,500 INFO L462 AbstractCegarLoop]: Abstraction has 705 states and 1008 transitions. [2019-10-14 23:44:11,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1008 transitions. [2019-10-14 23:44:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-14 23:44:11,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:11,516 INFO L380 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] [2019-10-14 23:44:11,516 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:11,517 INFO L82 PathProgramCache]: Analyzing trace with hash 25365273, now seen corresponding path program 1 times [2019-10-14 23:44:11,518 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:11,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186022548] [2019-10-14 23:44:11,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:11,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:11,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:11,887 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:11,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186022548] [2019-10-14 23:44:11,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:11,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:11,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690788153] [2019-10-14 23:44:11,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:11,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:11,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:11,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:11,925 INFO L87 Difference]: Start difference. First operand 705 states and 1008 transitions. Second operand 4 states. [2019-10-14 23:44:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:14,945 INFO L93 Difference]: Finished difference Result 2069 states and 2954 transitions. [2019-10-14 23:44:14,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:14,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-14 23:44:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:14,954 INFO L225 Difference]: With dead ends: 2069 [2019-10-14 23:44:14,954 INFO L226 Difference]: Without dead ends: 1396 [2019-10-14 23:44:14,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:14,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2019-10-14 23:44:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 707. [2019-10-14 23:44:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-14 23:44:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1010 transitions. [2019-10-14 23:44:15,004 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1010 transitions. Word has length 144 [2019-10-14 23:44:15,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:15,004 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1010 transitions. [2019-10-14 23:44:15,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1010 transitions. [2019-10-14 23:44:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:44:15,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:15,007 INFO L380 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, 1] [2019-10-14 23:44:15,008 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash 166703234, now seen corresponding path program 1 times [2019-10-14 23:44:15,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:15,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381492925] [2019-10-14 23:44:15,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:15,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:15,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:15,416 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:15,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381492925] [2019-10-14 23:44:15,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:15,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:15,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458745914] [2019-10-14 23:44:15,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:15,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:15,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:15,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:15,535 INFO L87 Difference]: Start difference. First operand 707 states and 1010 transitions. Second operand 4 states. [2019-10-14 23:44:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:18,543 INFO L93 Difference]: Finished difference Result 1893 states and 2715 transitions. [2019-10-14 23:44:18,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:18,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-14 23:44:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:18,553 INFO L225 Difference]: With dead ends: 1893 [2019-10-14 23:44:18,553 INFO L226 Difference]: Without dead ends: 1368 [2019-10-14 23:44:18,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:18,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2019-10-14 23:44:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1343. [2019-10-14 23:44:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1343 states. [2019-10-14 23:44:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1911 transitions. [2019-10-14 23:44:18,617 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1911 transitions. Word has length 145 [2019-10-14 23:44:18,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:18,617 INFO L462 AbstractCegarLoop]: Abstraction has 1343 states and 1911 transitions. [2019-10-14 23:44:18,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1911 transitions. [2019-10-14 23:44:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:44:18,621 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:18,621 INFO L380 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, 1] [2019-10-14 23:44:18,622 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:18,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 271175045, now seen corresponding path program 1 times [2019-10-14 23:44:18,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:18,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454994404] [2019-10-14 23:44:18,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:18,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:18,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:19,071 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:19,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454994404] [2019-10-14 23:44:19,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:19,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:19,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435053643] [2019-10-14 23:44:19,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:19,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:19,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:19,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:19,156 INFO L87 Difference]: Start difference. First operand 1343 states and 1911 transitions. Second operand 5 states. [2019-10-14 23:44:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:21,192 INFO L93 Difference]: Finished difference Result 2201 states and 3141 transitions. [2019-10-14 23:44:21,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:21,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-10-14 23:44:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:21,204 INFO L225 Difference]: With dead ends: 2201 [2019-10-14 23:44:21,205 INFO L226 Difference]: Without dead ends: 1030 [2019-10-14 23:44:21,208 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2019-10-14 23:44:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2019-10-14 23:44:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2019-10-14 23:44:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1457 transitions. [2019-10-14 23:44:21,282 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1457 transitions. Word has length 145 [2019-10-14 23:44:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:21,283 INFO L462 AbstractCegarLoop]: Abstraction has 1030 states and 1457 transitions. [2019-10-14 23:44:21,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1457 transitions. [2019-10-14 23:44:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:44:21,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:21,289 INFO L380 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:21,289 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:21,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1646821595, now seen corresponding path program 1 times [2019-10-14 23:44:21,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:21,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503080216] [2019-10-14 23:44:21,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:21,920 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:22,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503080216] [2019-10-14 23:44:22,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:22,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:22,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349207258] [2019-10-14 23:44:22,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:44:22,009 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:22,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:44:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:22,009 INFO L87 Difference]: Start difference. First operand 1030 states and 1457 transitions. Second operand 10 states. [2019-10-14 23:44:22,332 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:44:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:24,440 INFO L93 Difference]: Finished difference Result 2677 states and 3904 transitions. [2019-10-14 23:44:24,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:44:24,441 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2019-10-14 23:44:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:24,451 INFO L225 Difference]: With dead ends: 2677 [2019-10-14 23:44:24,451 INFO L226 Difference]: Without dead ends: 1818 [2019-10-14 23:44:24,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:44:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2019-10-14 23:44:24,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1496. [2019-10-14 23:44:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2019-10-14 23:44:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2138 transitions. [2019-10-14 23:44:24,533 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2138 transitions. Word has length 151 [2019-10-14 23:44:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:24,534 INFO L462 AbstractCegarLoop]: Abstraction has 1496 states and 2138 transitions. [2019-10-14 23:44:24,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:44:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2138 transitions. [2019-10-14 23:44:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:44:24,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:24,539 INFO L380 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:24,539 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:24,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash 154501339, now seen corresponding path program 1 times [2019-10-14 23:44:24,540 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:24,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071829192] [2019-10-14 23:44:24,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:24,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:24,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:24,981 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:25,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071829192] [2019-10-14 23:44:25,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:25,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:25,078 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779354275] [2019-10-14 23:44:25,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:25,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:25,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:25,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:25,079 INFO L87 Difference]: Start difference. First operand 1496 states and 2138 transitions. Second operand 5 states. [2019-10-14 23:44:25,343 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:44:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:26,872 INFO L93 Difference]: Finished difference Result 2950 states and 4367 transitions. [2019-10-14 23:44:26,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:44:26,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-14 23:44:26,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:26,885 INFO L225 Difference]: With dead ends: 2950 [2019-10-14 23:44:26,885 INFO L226 Difference]: Without dead ends: 2430 [2019-10-14 23:44:26,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2019-10-14 23:44:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2428. [2019-10-14 23:44:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2019-10-14 23:44:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3512 transitions. [2019-10-14 23:44:27,074 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3512 transitions. Word has length 151 [2019-10-14 23:44:27,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:27,077 INFO L462 AbstractCegarLoop]: Abstraction has 2428 states and 3512 transitions. [2019-10-14 23:44:27,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3512 transitions. [2019-10-14 23:44:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:44:27,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:27,083 INFO L380 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:27,083 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:27,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2031358202, now seen corresponding path program 1 times [2019-10-14 23:44:27,084 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:27,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359634196] [2019-10-14 23:44:27,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:27,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:27,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:27,556 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:27,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359634196] [2019-10-14 23:44:27,611 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:27,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:27,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191507715] [2019-10-14 23:44:27,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:27,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:27,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:27,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:27,613 INFO L87 Difference]: Start difference. First operand 2428 states and 3512 transitions. Second operand 5 states. [2019-10-14 23:44:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:30,298 INFO L93 Difference]: Finished difference Result 6277 states and 9070 transitions. [2019-10-14 23:44:30,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:30,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-14 23:44:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:30,316 INFO L225 Difference]: With dead ends: 6277 [2019-10-14 23:44:30,316 INFO L226 Difference]: Without dead ends: 3872 [2019-10-14 23:44:30,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2019-10-14 23:44:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3850. [2019-10-14 23:44:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3850 states. [2019-10-14 23:44:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5507 transitions. [2019-10-14 23:44:30,514 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5507 transitions. Word has length 151 [2019-10-14 23:44:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:30,514 INFO L462 AbstractCegarLoop]: Abstraction has 3850 states and 5507 transitions. [2019-10-14 23:44:30,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5507 transitions. [2019-10-14 23:44:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-14 23:44:30,520 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:30,521 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:30,521 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:30,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash 30760331, now seen corresponding path program 1 times [2019-10-14 23:44:30,522 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:30,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127551267] [2019-10-14 23:44:30,522 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:30,522 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:30,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:30,928 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:30,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127551267] [2019-10-14 23:44:30,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:30,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:30,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686454791] [2019-10-14 23:44:30,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:30,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:30,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:31,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:31,000 INFO L87 Difference]: Start difference. First operand 3850 states and 5507 transitions. Second operand 4 states. [2019-10-14 23:44:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:33,701 INFO L93 Difference]: Finished difference Result 10830 states and 15529 transitions. [2019-10-14 23:44:33,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:33,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-10-14 23:44:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:33,731 INFO L225 Difference]: With dead ends: 10830 [2019-10-14 23:44:33,731 INFO L226 Difference]: Without dead ends: 7331 [2019-10-14 23:44:33,739 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:33,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7331 states. [2019-10-14 23:44:34,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7331 to 7311. [2019-10-14 23:44:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7311 states. [2019-10-14 23:44:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 10356 transitions. [2019-10-14 23:44:34,085 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 10356 transitions. Word has length 153 [2019-10-14 23:44:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:34,086 INFO L462 AbstractCegarLoop]: Abstraction has 7311 states and 10356 transitions. [2019-10-14 23:44:34,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 10356 transitions. [2019-10-14 23:44:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-14 23:44:34,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:34,097 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:34,097 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:34,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:34,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1476891570, now seen corresponding path program 1 times [2019-10-14 23:44:34,098 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:34,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833650056] [2019-10-14 23:44:34,099 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:34,099 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:34,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:34,533 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:34,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833650056] [2019-10-14 23:44:34,636 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:34,636 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:34,636 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212621369] [2019-10-14 23:44:34,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:34,637 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:34,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:34,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:34,639 INFO L87 Difference]: Start difference. First operand 7311 states and 10356 transitions. Second operand 5 states. [2019-10-14 23:44:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:36,227 INFO L93 Difference]: Finished difference Result 11608 states and 16445 transitions. [2019-10-14 23:44:36,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:36,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-14 23:44:36,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:36,253 INFO L225 Difference]: With dead ends: 11608 [2019-10-14 23:44:36,254 INFO L226 Difference]: Without dead ends: 5961 [2019-10-14 23:44:36,265 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:36,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2019-10-14 23:44:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5961. [2019-10-14 23:44:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5961 states. [2019-10-14 23:44:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8411 transitions. [2019-10-14 23:44:36,561 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8411 transitions. Word has length 153 [2019-10-14 23:44:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:36,562 INFO L462 AbstractCegarLoop]: Abstraction has 5961 states and 8411 transitions. [2019-10-14 23:44:36,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8411 transitions. [2019-10-14 23:44:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-14 23:44:36,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:36,569 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:36,570 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:36,570 INFO L82 PathProgramCache]: Analyzing trace with hash 770800706, now seen corresponding path program 1 times [2019-10-14 23:44:36,571 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:36,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987896201] [2019-10-14 23:44:36,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:36,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:36,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:37,000 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:44:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:37,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987896201] [2019-10-14 23:44:37,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:37,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:37,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878016687] [2019-10-14 23:44:37,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:44:37,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:37,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:44:37,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:44:37,050 INFO L87 Difference]: Start difference. First operand 5961 states and 8411 transitions. Second operand 9 states. [2019-10-14 23:44:37,378 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 194