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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:46:22,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:46:22,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:46:22,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:46:22,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:46:22,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:46:22,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:46:22,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:46:22,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:46:22,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:46:22,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:46:22,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:46:22,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:46:22,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:46:22,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:46:22,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:46:22,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:46:22,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:46:22,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:46:22,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:46:22,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:46:22,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:46:22,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:46:22,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:46:22,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:46:22,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:46:22,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:46:22,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:46:22,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:46:22,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:46:22,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:46:22,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:46:22,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:46:22,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:46:22,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:46:22,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:46:22,254 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 [2019-10-13 19:46:22,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:46:22,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:46:22,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:46:22,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:46:22,270 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:46:22,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:46:22,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:46:22,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:46:22,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:46:22,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:46:22,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:46:22,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:46:22,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:46:22,272 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:46:22,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:46:22,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:46:22,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:46:22,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:46:22,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:46:22,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:46:22,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:46:22,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:46:22,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:46:22,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:46:22,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:46:22,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:46:22,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:46:22,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:46:22,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:46:22,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:46:22,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:46:22,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:46:22,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:46:22,628 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:46:22,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-13 19:46:22,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30705e00/f4ab53417bda492fbc02e4f0b157dd3b/FLAGe093b6a06 [2019-10-13 19:46:23,247 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:46:23,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-13 19:46:23,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30705e00/f4ab53417bda492fbc02e4f0b157dd3b/FLAGe093b6a06 [2019-10-13 19:46:23,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30705e00/f4ab53417bda492fbc02e4f0b157dd3b [2019-10-13 19:46:23,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:46:23,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:46:23,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:23,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:46:23,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:46:23,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:23" (1/1) ... [2019-10-13 19:46:23,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4262f24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23, skipping insertion in model container [2019-10-13 19:46:23,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:23" (1/1) ... [2019-10-13 19:46:23,576 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:46:23,682 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:46:24,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:24,579 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:46:24,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:24,812 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:46:24,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24 WrapperNode [2019-10-13 19:46:24,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:24,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:46:24,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:46:24,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:46:24,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (1/1) ... [2019-10-13 19:46:24,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:46:24,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:46:24,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:46:24,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:46:24,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (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 [2019-10-13 19:46:25,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:46:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:46:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:46:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:46:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:46:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:46:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:46:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:46:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:46:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:46:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:46:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:46:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:46:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:46:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:46:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:46:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:46:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:46:26,884 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:46:26,885 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:46:26,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:26 BoogieIcfgContainer [2019-10-13 19:46:26,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:46:26,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:46:26,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:46:26,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:46:26,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:23" (1/3) ... [2019-10-13 19:46:26,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da15485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:26, skipping insertion in model container [2019-10-13 19:46:26,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:24" (2/3) ... [2019-10-13 19:46:26,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da15485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:26, skipping insertion in model container [2019-10-13 19:46:26,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:26" (3/3) ... [2019-10-13 19:46:26,901 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-13 19:46:26,912 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:46:26,925 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 19:46:26,937 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 19:46:26,983 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:46:26,983 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:46:26,983 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:46:26,984 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:46:26,984 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:46:26,984 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:46:26,984 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:46:26,984 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:46:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states. [2019-10-13 19:46:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:46:27,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:27,060 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] [2019-10-13 19:46:27,063 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:27,069 INFO L82 PathProgramCache]: Analyzing trace with hash 18427047, now seen corresponding path program 1 times [2019-10-13 19:46:27,076 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:27,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347864823] [2019-10-13 19:46:27,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:27,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:27,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:28,153 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:28,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347864823] [2019-10-13 19:46:28,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:28,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:28,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44987149] [2019-10-13 19:46:28,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:28,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:28,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:28,261 INFO L87 Difference]: Start difference. First operand 405 states. Second operand 4 states. [2019-10-13 19:46:28,643 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-10-13 19:46:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:31,461 INFO L93 Difference]: Finished difference Result 734 states and 1290 transitions. [2019-10-13 19:46:31,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:31,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 19:46:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:31,500 INFO L225 Difference]: With dead ends: 734 [2019-10-13 19:46:31,501 INFO L226 Difference]: Without dead ends: 573 [2019-10-13 19:46:31,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-10-13 19:46:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2019-10-13 19:46:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-13 19:46:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 834 transitions. [2019-10-13 19:46:31,640 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 834 transitions. Word has length 149 [2019-10-13 19:46:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:31,643 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 834 transitions. [2019-10-13 19:46:31,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 834 transitions. [2019-10-13 19:46:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:46:31,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:31,649 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] [2019-10-13 19:46:31,650 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:31,651 INFO L82 PathProgramCache]: Analyzing trace with hash 108834247, now seen corresponding path program 1 times [2019-10-13 19:46:31,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:31,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736758411] [2019-10-13 19:46:31,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:31,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:31,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:32,151 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:32,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736758411] [2019-10-13 19:46:32,198 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:32,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:32,198 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042052623] [2019-10-13 19:46:32,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:32,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:32,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:32,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:32,201 INFO L87 Difference]: Start difference. First operand 571 states and 834 transitions. Second operand 4 states. [2019-10-13 19:46:32,555 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-10-13 19:46:34,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:34,723 INFO L93 Difference]: Finished difference Result 1144 states and 1727 transitions. [2019-10-13 19:46:34,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:34,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 19:46:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:34,729 INFO L225 Difference]: With dead ends: 1144 [2019-10-13 19:46:34,729 INFO L226 Difference]: Without dead ends: 915 [2019-10-13 19:46:34,732 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2019-10-13 19:46:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 913. [2019-10-13 19:46:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-10-13 19:46:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1356 transitions. [2019-10-13 19:46:34,781 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1356 transitions. Word has length 149 [2019-10-13 19:46:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:34,784 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 1356 transitions. [2019-10-13 19:46:34,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1356 transitions. [2019-10-13 19:46:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:46:34,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:34,787 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] [2019-10-13 19:46:34,788 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1956442329, now seen corresponding path program 1 times [2019-10-13 19:46:34,789 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:34,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183391532] [2019-10-13 19:46:34,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:34,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:34,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:35,558 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:35,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183391532] [2019-10-13 19:46:35,620 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:35,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:35,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886096050] [2019-10-13 19:46:35,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:35,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:35,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:35,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:35,633 INFO L87 Difference]: Start difference. First operand 913 states and 1356 transitions. Second operand 5 states. [2019-10-13 19:46:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:38,537 INFO L93 Difference]: Finished difference Result 2677 states and 3967 transitions. [2019-10-13 19:46:38,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:38,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-10-13 19:46:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:38,548 INFO L225 Difference]: With dead ends: 2677 [2019-10-13 19:46:38,549 INFO L226 Difference]: Without dead ends: 1777 [2019-10-13 19:46:38,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:46:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2019-10-13 19:46:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1748. [2019-10-13 19:46:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2019-10-13 19:46:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2584 transitions. [2019-10-13 19:46:38,623 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2584 transitions. Word has length 149 [2019-10-13 19:46:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:38,623 INFO L462 AbstractCegarLoop]: Abstraction has 1748 states and 2584 transitions. [2019-10-13 19:46:38,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2584 transitions. [2019-10-13 19:46:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:46:38,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:38,627 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] [2019-10-13 19:46:38,628 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash 970634365, now seen corresponding path program 1 times [2019-10-13 19:46:38,628 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:38,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043001485] [2019-10-13 19:46:38,629 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:38,629 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:38,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,022 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:39,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043001485] [2019-10-13 19:46:39,083 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:39,083 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:39,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585332462] [2019-10-13 19:46:39,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:39,085 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:39,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:39,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:39,085 INFO L87 Difference]: Start difference. First operand 1748 states and 2584 transitions. Second operand 4 states. [2019-10-13 19:46:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:42,497 INFO L93 Difference]: Finished difference Result 5198 states and 7682 transitions. [2019-10-13 19:46:42,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:42,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-10-13 19:46:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:42,516 INFO L225 Difference]: With dead ends: 5198 [2019-10-13 19:46:42,516 INFO L226 Difference]: Without dead ends: 3482 [2019-10-13 19:46:42,521 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 [2019-10-13 19:46:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2019-10-13 19:46:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 1750. [2019-10-13 19:46:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-13 19:46:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2586 transitions. [2019-10-13 19:46:42,624 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2586 transitions. Word has length 150 [2019-10-13 19:46:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:42,624 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2586 transitions. [2019-10-13 19:46:42,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2586 transitions. [2019-10-13 19:46:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:46:42,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:42,628 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] [2019-10-13 19:46:42,628 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:42,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:42,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1963532230, now seen corresponding path program 1 times [2019-10-13 19:46:42,629 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:42,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143816970] [2019-10-13 19:46:42,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:43,211 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:43,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143816970] [2019-10-13 19:46:43,252 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:43,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:43,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689166695] [2019-10-13 19:46:43,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:43,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:43,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:43,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:43,254 INFO L87 Difference]: Start difference. First operand 1750 states and 2586 transitions. Second operand 5 states. [2019-10-13 19:46:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:45,023 INFO L93 Difference]: Finished difference Result 3482 states and 5147 transitions. [2019-10-13 19:46:45,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:45,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-13 19:46:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:45,034 INFO L225 Difference]: With dead ends: 3482 [2019-10-13 19:46:45,034 INFO L226 Difference]: Without dead ends: 1750 [2019-10-13 19:46:45,038 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 [2019-10-13 19:46:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-10-13 19:46:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1749. [2019-10-13 19:46:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2019-10-13 19:46:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2583 transitions. [2019-10-13 19:46:45,118 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2583 transitions. Word has length 151 [2019-10-13 19:46:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:45,119 INFO L462 AbstractCegarLoop]: Abstraction has 1749 states and 2583 transitions. [2019-10-13 19:46:45,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2583 transitions. [2019-10-13 19:46:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:46:45,122 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:45,123 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] [2019-10-13 19:46:45,123 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:45,123 INFO L82 PathProgramCache]: Analyzing trace with hash 858257964, now seen corresponding path program 1 times [2019-10-13 19:46:45,124 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:45,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460970871] [2019-10-13 19:46:45,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:45,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:45,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,480 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:45,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460970871] [2019-10-13 19:46:45,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:45,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:45,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601783569] [2019-10-13 19:46:45,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:45,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:45,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:45,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:45,528 INFO L87 Difference]: Start difference. First operand 1749 states and 2583 transitions. Second operand 4 states. [2019-10-13 19:46:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:48,595 INFO L93 Difference]: Finished difference Result 4577 states and 6755 transitions. [2019-10-13 19:46:48,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:48,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-13 19:46:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:48,613 INFO L225 Difference]: With dead ends: 4577 [2019-10-13 19:46:48,613 INFO L226 Difference]: Without dead ends: 3026 [2019-10-13 19:46:48,617 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 [2019-10-13 19:46:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2019-10-13 19:46:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2997. [2019-10-13 19:46:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2997 states. [2019-10-13 19:46:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4373 transitions. [2019-10-13 19:46:48,735 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4373 transitions. Word has length 151 [2019-10-13 19:46:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:48,736 INFO L462 AbstractCegarLoop]: Abstraction has 2997 states and 4373 transitions. [2019-10-13 19:46:48,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4373 transitions. [2019-10-13 19:46:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:46:48,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:48,742 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] [2019-10-13 19:46:48,742 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash -649393937, now seen corresponding path program 1 times [2019-10-13 19:46:48,743 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:48,743 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637362318] [2019-10-13 19:46:48,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:48,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:48,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:49,165 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:49,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637362318] [2019-10-13 19:46:49,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:49,203 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:49,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047325888] [2019-10-13 19:46:49,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:49,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:49,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:49,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:49,205 INFO L87 Difference]: Start difference. First operand 2997 states and 4373 transitions. Second operand 5 states. [2019-10-13 19:46:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:50,833 INFO L93 Difference]: Finished difference Result 5374 states and 7862 transitions. [2019-10-13 19:46:50,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:50,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-13 19:46:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:50,845 INFO L225 Difference]: With dead ends: 5374 [2019-10-13 19:46:50,845 INFO L226 Difference]: Without dead ends: 2563 [2019-10-13 19:46:50,851 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 [2019-10-13 19:46:50,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2019-10-13 19:46:50,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2019-10-13 19:46:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2019-10-13 19:46:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3737 transitions. [2019-10-13 19:46:50,995 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3737 transitions. Word has length 151 [2019-10-13 19:46:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:50,996 INFO L462 AbstractCegarLoop]: Abstraction has 2563 states and 3737 transitions. [2019-10-13 19:46:50,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3737 transitions. [2019-10-13 19:46:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:46:51,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:51,003 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] [2019-10-13 19:46:51,004 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash -341408988, now seen corresponding path program 1 times [2019-10-13 19:46:51,004 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:51,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285558183] [2019-10-13 19:46:51,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:51,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:51,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:51,385 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:51,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285558183] [2019-10-13 19:46:51,426 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:51,426 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:51,427 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067660637] [2019-10-13 19:46:51,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:51,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:51,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:51,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:51,429 INFO L87 Difference]: Start difference. First operand 2563 states and 3737 transitions. Second operand 4 states. [2019-10-13 19:46:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:53,382 INFO L93 Difference]: Finished difference Result 5831 states and 8728 transitions. [2019-10-13 19:46:53,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:53,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-13 19:46:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:53,394 INFO L225 Difference]: With dead ends: 5831 [2019-10-13 19:46:53,394 INFO L226 Difference]: Without dead ends: 3457 [2019-10-13 19:46:53,399 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 [2019-10-13 19:46:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2019-10-13 19:46:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3395. [2019-10-13 19:46:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2019-10-13 19:46:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 5094 transitions. [2019-10-13 19:46:53,538 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 5094 transitions. Word has length 152 [2019-10-13 19:46:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:53,538 INFO L462 AbstractCegarLoop]: Abstraction has 3395 states and 5094 transitions. [2019-10-13 19:46:53,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 5094 transitions. [2019-10-13 19:46:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 19:46:53,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:53,543 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] [2019-10-13 19:46:53,544 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash 35518099, now seen corresponding path program 1 times [2019-10-13 19:46:53,544 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:53,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29896448] [2019-10-13 19:46:53,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:53,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:53,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:54,162 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-13 19:46:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:54,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29896448] [2019-10-13 19:46:54,261 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:54,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:46:54,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771340083] [2019-10-13 19:46:54,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:46:54,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:54,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:46:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:46:54,264 INFO L87 Difference]: Start difference. First operand 3395 states and 5094 transitions. Second operand 14 states. [2019-10-13 19:46:54,608 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 215