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 0.1.24-13a467a-m [2019-10-14 23:45:21,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:45:21,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:45:21,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:45:21,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:45:21,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:45:21,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:45:21,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:45:21,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:45:21,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:45:21,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:45:21,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:45:21,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:45:21,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:45:21,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:45:21,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:45:21,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:45:21,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:45:21,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:45:21,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:45:21,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:45:21,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:45:21,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:45:21,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:45:21,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:45:21,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:45:21,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:45:21,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:45:21,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:45:21,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:45:21,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:45:21,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:45:21,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:45:21,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:45:21,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:45:21,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:45:21,211 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 23:45:21,247 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:45:21,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:45:21,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:45:21,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:45:21,253 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:45:21,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:45:21,253 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:45:21,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:45:21,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:45:21,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:45:21,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:45:21,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:45:21,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:45:21,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:45:21,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:45:21,255 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:45:21,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:45:21,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:45:21,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:45:21,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:45:21,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:45:21,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:45:21,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:45:21,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:45:21,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:45:21,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:45:21,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:45:21,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:45:21,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:45:21,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:45:21,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:45:21,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:45:21,539 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:45:21,539 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:45:21,540 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:45:21,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd54228d6/1339b78a73b84f1e9bfc0581917ca7db/FLAGd938a8005 [2019-10-14 23:45:22,220 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:45:22,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:45:22,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd54228d6/1339b78a73b84f1e9bfc0581917ca7db/FLAGd938a8005 [2019-10-14 23:45:22,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd54228d6/1339b78a73b84f1e9bfc0581917ca7db [2019-10-14 23:45:22,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:45:22,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:45:22,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:45:22,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:45:22,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:45:22,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:22" (1/1) ... [2019-10-14 23:45:22,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528d6d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:22, skipping insertion in model container [2019-10-14 23:45:22,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:22" (1/1) ... [2019-10-14 23:45:22,431 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:45:22,512 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:45:23,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:45:23,181 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:45:23,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:45:23,633 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:45:23,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23 WrapperNode [2019-10-14 23:45:23,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:45:23,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:45:23,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:45:23,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:45:23,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (1/1) ... [2019-10-14 23:45:23,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (1/1) ... [2019-10-14 23:45:23,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (1/1) ... [2019-10-14 23:45:23,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (1/1) ... [2019-10-14 23:45:23,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (1/1) ... [2019-10-14 23:45:23,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (1/1) ... [2019-10-14 23:45:23,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (1/1) ... [2019-10-14 23:45:23,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:45:23,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:45:23,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:45:23,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:45:23,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (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 23:45:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:45:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:45:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:45:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:45:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:45:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:45:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:45:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:45:23,852 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:45:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:45:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:45:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:45:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:45:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:45:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:45:23,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:45:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:45:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:45:25,732 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:45:25,733 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:45:25,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:25 BoogieIcfgContainer [2019-10-14 23:45:25,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:45:25,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:45:25,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:45:25,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:45:25,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:45:22" (1/3) ... [2019-10-14 23:45:25,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c63e51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:25, skipping insertion in model container [2019-10-14 23:45:25,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:23" (2/3) ... [2019-10-14 23:45:25,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c63e51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:25, skipping insertion in model container [2019-10-14 23:45:25,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:25" (3/3) ... [2019-10-14 23:45:25,744 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:45:25,755 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:45:25,764 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-14 23:45:25,776 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-14 23:45:25,806 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:45:25,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:45:25,807 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:45:25,807 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:45:25,807 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:45:25,808 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:45:25,808 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:45:25,808 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:45:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states. [2019-10-14 23:45:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:45:25,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:25,857 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] [2019-10-14 23:45:25,859 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:25,865 INFO L82 PathProgramCache]: Analyzing trace with hash 18427047, now seen corresponding path program 1 times [2019-10-14 23:45:25,872 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:25,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215718028] [2019-10-14 23:45:25,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:25,873 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:25,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:26,895 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:26,979 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 23:45:26,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215718028] [2019-10-14 23:45:26,981 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:26,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:26,982 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864637715] [2019-10-14 23:45:26,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:26,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:27,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:27,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:27,014 INFO L87 Difference]: Start difference. First operand 405 states. Second operand 4 states. [2019-10-14 23:45:27,440 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-10-14 23:45:30,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:30,240 INFO L93 Difference]: Finished difference Result 734 states and 1290 transitions. [2019-10-14 23:45:30,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:30,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-14 23:45:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:30,265 INFO L225 Difference]: With dead ends: 734 [2019-10-14 23:45:30,265 INFO L226 Difference]: Without dead ends: 573 [2019-10-14 23:45:30,271 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 [2019-10-14 23:45:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-10-14 23:45:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2019-10-14 23:45:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-14 23:45:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 834 transitions. [2019-10-14 23:45:30,394 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 834 transitions. Word has length 149 [2019-10-14 23:45:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:30,398 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 834 transitions. [2019-10-14 23:45:30,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 834 transitions. [2019-10-14 23:45:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:45:30,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:30,407 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] [2019-10-14 23:45:30,408 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:30,409 INFO L82 PathProgramCache]: Analyzing trace with hash 108834247, now seen corresponding path program 1 times [2019-10-14 23:45:30,409 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:30,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837431129] [2019-10-14 23:45:30,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:30,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:30,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:30,982 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:31,059 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 23:45:31,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837431129] [2019-10-14 23:45:31,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:31,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:31,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492121603] [2019-10-14 23:45:31,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:31,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:31,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:31,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:31,064 INFO L87 Difference]: Start difference. First operand 571 states and 834 transitions. Second operand 4 states. [2019-10-14 23:45:31,386 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-10-14 23:45:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:33,496 INFO L93 Difference]: Finished difference Result 1144 states and 1727 transitions. [2019-10-14 23:45:33,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:33,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-14 23:45:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:33,503 INFO L225 Difference]: With dead ends: 1144 [2019-10-14 23:45:33,504 INFO L226 Difference]: Without dead ends: 915 [2019-10-14 23:45:33,507 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 [2019-10-14 23:45:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2019-10-14 23:45:33,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 913. [2019-10-14 23:45:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-10-14 23:45:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1356 transitions. [2019-10-14 23:45:33,566 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1356 transitions. Word has length 149 [2019-10-14 23:45:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:33,570 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 1356 transitions. [2019-10-14 23:45:33,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:33,570 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1356 transitions. [2019-10-14 23:45:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:45:33,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:33,578 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] [2019-10-14 23:45:33,578 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1956442329, now seen corresponding path program 1 times [2019-10-14 23:45:33,579 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:33,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715605829] [2019-10-14 23:45:33,580 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:33,580 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:33,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:34,272 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:34,349 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 23:45:34,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715605829] [2019-10-14 23:45:34,351 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:34,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:34,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665531183] [2019-10-14 23:45:34,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:34,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:34,361 INFO L87 Difference]: Start difference. First operand 913 states and 1356 transitions. Second operand 5 states. [2019-10-14 23:45:37,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:37,358 INFO L93 Difference]: Finished difference Result 2677 states and 3967 transitions. [2019-10-14 23:45:37,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:37,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-10-14 23:45:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:37,371 INFO L225 Difference]: With dead ends: 2677 [2019-10-14 23:45:37,371 INFO L226 Difference]: Without dead ends: 1777 [2019-10-14 23:45:37,375 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 [2019-10-14 23:45:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2019-10-14 23:45:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1748. [2019-10-14 23:45:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2019-10-14 23:45:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2584 transitions. [2019-10-14 23:45:37,455 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2584 transitions. Word has length 149 [2019-10-14 23:45:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:37,455 INFO L462 AbstractCegarLoop]: Abstraction has 1748 states and 2584 transitions. [2019-10-14 23:45:37,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2584 transitions. [2019-10-14 23:45:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-14 23:45:37,460 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:37,460 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] [2019-10-14 23:45:37,460 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:37,461 INFO L82 PathProgramCache]: Analyzing trace with hash 970634365, now seen corresponding path program 1 times [2019-10-14 23:45:37,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:37,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364958948] [2019-10-14 23:45:37,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:37,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:37,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:37,829 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:37,864 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 23:45:37,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364958948] [2019-10-14 23:45:37,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:37,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:37,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987079548] [2019-10-14 23:45:37,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:37,866 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:37,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:37,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:37,867 INFO L87 Difference]: Start difference. First operand 1748 states and 2584 transitions. Second operand 4 states. [2019-10-14 23:45:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:40,911 INFO L93 Difference]: Finished difference Result 5198 states and 7682 transitions. [2019-10-14 23:45:40,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:40,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-10-14 23:45:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:40,928 INFO L225 Difference]: With dead ends: 5198 [2019-10-14 23:45:40,928 INFO L226 Difference]: Without dead ends: 3482 [2019-10-14 23:45:40,932 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 23:45:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2019-10-14 23:45:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 1750. [2019-10-14 23:45:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-14 23:45:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2586 transitions. [2019-10-14 23:45:41,021 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2586 transitions. Word has length 150 [2019-10-14 23:45:41,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:41,021 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2586 transitions. [2019-10-14 23:45:41,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2586 transitions. [2019-10-14 23:45:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:45:41,025 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:41,025 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 23:45:41,026 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1963532230, now seen corresponding path program 1 times [2019-10-14 23:45:41,026 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:41,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391998786] [2019-10-14 23:45:41,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:41,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:41,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:41,585 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:41,627 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 23:45:41,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391998786] [2019-10-14 23:45:41,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:41,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:41,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050809339] [2019-10-14 23:45:41,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:41,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:41,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:41,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:41,630 INFO L87 Difference]: Start difference. First operand 1750 states and 2586 transitions. Second operand 5 states. [2019-10-14 23:45:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:43,320 INFO L93 Difference]: Finished difference Result 3482 states and 5147 transitions. [2019-10-14 23:45:43,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:43,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-14 23:45:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:43,329 INFO L225 Difference]: With dead ends: 3482 [2019-10-14 23:45:43,330 INFO L226 Difference]: Without dead ends: 1750 [2019-10-14 23:45:43,334 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 23:45:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-10-14 23:45:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1749. [2019-10-14 23:45:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2019-10-14 23:45:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2583 transitions. [2019-10-14 23:45:43,431 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2583 transitions. Word has length 151 [2019-10-14 23:45:43,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:43,433 INFO L462 AbstractCegarLoop]: Abstraction has 1749 states and 2583 transitions. [2019-10-14 23:45:43,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2583 transitions. [2019-10-14 23:45:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:45:43,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:43,436 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 23:45:43,437 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash 858257964, now seen corresponding path program 1 times [2019-10-14 23:45:43,438 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:43,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653767743] [2019-10-14 23:45:43,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:43,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:43,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:43,793 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:43,836 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 23:45:43,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653767743] [2019-10-14 23:45:43,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:43,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:43,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977487100] [2019-10-14 23:45:43,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:43,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:43,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:43,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:43,839 INFO L87 Difference]: Start difference. First operand 1749 states and 2583 transitions. Second operand 4 states. [2019-10-14 23:45:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:47,029 INFO L93 Difference]: Finished difference Result 4577 states and 6755 transitions. [2019-10-14 23:45:47,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:47,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-14 23:45:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:47,045 INFO L225 Difference]: With dead ends: 4577 [2019-10-14 23:45:47,045 INFO L226 Difference]: Without dead ends: 3026 [2019-10-14 23:45:47,049 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 23:45:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2019-10-14 23:45:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2997. [2019-10-14 23:45:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2997 states. [2019-10-14 23:45:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4373 transitions. [2019-10-14 23:45:47,161 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4373 transitions. Word has length 151 [2019-10-14 23:45:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:47,161 INFO L462 AbstractCegarLoop]: Abstraction has 2997 states and 4373 transitions. [2019-10-14 23:45:47,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4373 transitions. [2019-10-14 23:45:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:45:47,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:47,169 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 23:45:47,169 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:47,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:47,170 INFO L82 PathProgramCache]: Analyzing trace with hash -649393937, now seen corresponding path program 1 times [2019-10-14 23:45:47,170 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:47,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718314495] [2019-10-14 23:45:47,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:47,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:47,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:47,676 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:47,714 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 23:45:47,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718314495] [2019-10-14 23:45:47,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:47,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:47,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365979334] [2019-10-14 23:45:47,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:47,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:47,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:47,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:47,717 INFO L87 Difference]: Start difference. First operand 2997 states and 4373 transitions. Second operand 5 states. [2019-10-14 23:45:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:49,398 INFO L93 Difference]: Finished difference Result 5374 states and 7862 transitions. [2019-10-14 23:45:49,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:49,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-14 23:45:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:49,409 INFO L225 Difference]: With dead ends: 5374 [2019-10-14 23:45:49,410 INFO L226 Difference]: Without dead ends: 2563 [2019-10-14 23:45:49,416 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 23:45:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2019-10-14 23:45:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2019-10-14 23:45:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2019-10-14 23:45:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3737 transitions. [2019-10-14 23:45:49,504 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3737 transitions. Word has length 151 [2019-10-14 23:45:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:49,504 INFO L462 AbstractCegarLoop]: Abstraction has 2563 states and 3737 transitions. [2019-10-14 23:45:49,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3737 transitions. [2019-10-14 23:45:49,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:45:49,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:49,509 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] [2019-10-14 23:45:49,509 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:49,510 INFO L82 PathProgramCache]: Analyzing trace with hash -341408988, now seen corresponding path program 1 times [2019-10-14 23:45:49,510 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:49,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306524524] [2019-10-14 23:45:49,511 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:49,511 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:49,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:49,871 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:49,903 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 23:45:49,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306524524] [2019-10-14 23:45:49,903 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:49,904 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:49,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755011466] [2019-10-14 23:45:49,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:49,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:49,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:49,905 INFO L87 Difference]: Start difference. First operand 2563 states and 3737 transitions. Second operand 4 states. [2019-10-14 23:45:51,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:51,782 INFO L93 Difference]: Finished difference Result 5831 states and 8728 transitions. [2019-10-14 23:45:51,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:51,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-14 23:45:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:51,793 INFO L225 Difference]: With dead ends: 5831 [2019-10-14 23:45:51,794 INFO L226 Difference]: Without dead ends: 3457 [2019-10-14 23:45:51,798 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 23:45:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2019-10-14 23:45:51,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3395. [2019-10-14 23:45:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2019-10-14 23:45:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 5094 transitions. [2019-10-14 23:45:51,912 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 5094 transitions. Word has length 152 [2019-10-14 23:45:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:51,913 INFO L462 AbstractCegarLoop]: Abstraction has 3395 states and 5094 transitions. [2019-10-14 23:45:51,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 5094 transitions. [2019-10-14 23:45:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-14 23:45:51,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:51,918 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] [2019-10-14 23:45:51,918 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:51,918 INFO L82 PathProgramCache]: Analyzing trace with hash 35518099, now seen corresponding path program 1 times [2019-10-14 23:45:51,919 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:51,919 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801923348] [2019-10-14 23:45:51,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:51,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:51,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:52,532 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-10-14 23:45:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:52,615 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 23:45:52,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801923348] [2019-10-14 23:45:52,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:52,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:45:52,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503958365] [2019-10-14 23:45:52,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:45:52,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:45:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:45:52,617 INFO L87 Difference]: Start difference. First operand 3395 states and 5094 transitions. Second operand 14 states. [2019-10-14 23:45:52,995 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 215