/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:13:16,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:13:16,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:13:16,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:13:16,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:13:16,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:13:16,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:13:16,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:13:16,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:13:16,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:13:16,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:13:16,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:13:16,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:13:16,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:13:16,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:13:16,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:13:16,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:13:16,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:13:16,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:13:16,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:13:16,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:13:16,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:13:16,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:13:16,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:13:16,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:13:16,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:13:16,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:13:16,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:13:16,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:13:16,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:13:16,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:13:16,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:13:16,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:13:16,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:13:16,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:13:16,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:13:16,870 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 [2019-11-06 22:13:16,894 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:13:16,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:13:16,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:13:16,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:13:16,896 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:13:16,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:13:16,896 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:13:16,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:13:16,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:13:16,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:13:16,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:13:16,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:13:16,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:13:16,898 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:13:16,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:13:16,898 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:13:16,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:13:16,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:13:16,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:13:16,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:13:16,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:13:16,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:13:16,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:13:16,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:13:16,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:13:16,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:13:16,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:13:16,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:13:16,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:13:17,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:13:17,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:13:17,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:13:17,190 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:13:17,190 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:13:17,191 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:13:17,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ca30025/a0f024cac7604d7d8788cbecd09e6c56/FLAGb1529af1e [2019-11-06 22:13:17,820 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:13:17,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:13:17,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ca30025/a0f024cac7604d7d8788cbecd09e6c56/FLAGb1529af1e [2019-11-06 22:13:17,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ca30025/a0f024cac7604d7d8788cbecd09e6c56 [2019-11-06 22:13:18,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:13:18,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:13:18,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:18,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:13:18,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:13:18,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:17" (1/1) ... [2019-11-06 22:13:18,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237c4ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:18, skipping insertion in model container [2019-11-06 22:13:18,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:17" (1/1) ... [2019-11-06 22:13:18,026 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:13:18,100 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:13:18,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:18,727 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:13:19,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:19,172 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:13:19,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19 WrapperNode [2019-11-06 22:13:19,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:19,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:13:19,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:13:19,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:13:19,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (1/1) ... [2019-11-06 22:13:19,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (1/1) ... [2019-11-06 22:13:19,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (1/1) ... [2019-11-06 22:13:19,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (1/1) ... [2019-11-06 22:13:19,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (1/1) ... [2019-11-06 22:13:19,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (1/1) ... [2019-11-06 22:13:19,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (1/1) ... [2019-11-06 22:13:19,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:13:19,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:13:19,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:13:19,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:13:19,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (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 [2019-11-06 22:13:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:13:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:13:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:13:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:13:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:13:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:13:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:13:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:13:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:13:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:13:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:13:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:13:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:13:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:13:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:13:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:13:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:13:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:13:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:13:21,095 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:13:21,095 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:13:21,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:21 BoogieIcfgContainer [2019-11-06 22:13:21,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:13:21,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:13:21,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:13:21,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:13:21,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:17" (1/3) ... [2019-11-06 22:13:21,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc0af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:21, skipping insertion in model container [2019-11-06 22:13:21,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:19" (2/3) ... [2019-11-06 22:13:21,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc0af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:21, skipping insertion in model container [2019-11-06 22:13:21,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:21" (3/3) ... [2019-11-06 22:13:21,116 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:13:21,129 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:13:21,155 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-06 22:13:21,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-06 22:13:21,217 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:13:21,218 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:13:21,218 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:13:21,218 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:13:21,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:13:21,219 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:13:21,219 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:13:21,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:13:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states. [2019-11-06 22:13:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:13:21,298 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:21,299 INFO L410 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] [2019-11-06 22:13:21,302 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:21,310 INFO L82 PathProgramCache]: Analyzing trace with hash -242885028, now seen corresponding path program 1 times [2019-11-06 22:13:21,321 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:21,322 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469411087] [2019-11-06 22:13:21,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:22,314 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:22,383 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469411087] [2019-11-06 22:13:22,384 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:22,384 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:22,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495181688] [2019-11-06 22:13:22,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:22,395 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:22,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:22,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:22,410 INFO L87 Difference]: Start difference. First operand 382 states. Second operand 4 states. [2019-11-06 22:13:22,761 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:13:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:25,244 INFO L93 Difference]: Finished difference Result 692 states and 1229 transitions. [2019-11-06 22:13:25,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:25,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-11-06 22:13:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:25,267 INFO L225 Difference]: With dead ends: 692 [2019-11-06 22:13:25,267 INFO L226 Difference]: Without dead ends: 537 [2019-11-06 22:13:25,272 INFO L630 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 [2019-11-06 22:13:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-11-06 22:13:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 535. [2019-11-06 22:13:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2019-11-06 22:13:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 778 transitions. [2019-11-06 22:13:25,360 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 778 transitions. Word has length 142 [2019-11-06 22:13:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:25,361 INFO L462 AbstractCegarLoop]: Abstraction has 535 states and 778 transitions. [2019-11-06 22:13:25,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 778 transitions. [2019-11-06 22:13:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:13:25,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:25,364 INFO L410 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] [2019-11-06 22:13:25,364 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:25,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1296834716, now seen corresponding path program 1 times [2019-11-06 22:13:25,365 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:25,365 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96421547] [2019-11-06 22:13:25,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:25,813 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:25,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96421547] [2019-11-06 22:13:25,851 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:25,852 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:25,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664444869] [2019-11-06 22:13:25,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:25,854 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:25,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:25,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:25,855 INFO L87 Difference]: Start difference. First operand 535 states and 778 transitions. Second operand 4 states. [2019-11-06 22:13:26,161 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:13:28,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:28,264 INFO L93 Difference]: Finished difference Result 1070 states and 1613 transitions. [2019-11-06 22:13:28,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:28,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-11-06 22:13:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:28,271 INFO L225 Difference]: With dead ends: 1070 [2019-11-06 22:13:28,272 INFO L226 Difference]: Without dead ends: 853 [2019-11-06 22:13:28,274 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-11-06 22:13:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 851. [2019-11-06 22:13:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2019-11-06 22:13:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1260 transitions. [2019-11-06 22:13:28,325 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1260 transitions. Word has length 142 [2019-11-06 22:13:28,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:28,326 INFO L462 AbstractCegarLoop]: Abstraction has 851 states and 1260 transitions. [2019-11-06 22:13:28,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1260 transitions. [2019-11-06 22:13:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 22:13:28,329 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:28,329 INFO L410 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] [2019-11-06 22:13:28,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:28,330 INFO L82 PathProgramCache]: Analyzing trace with hash 156483868, now seen corresponding path program 1 times [2019-11-06 22:13:28,330 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:28,330 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087558652] [2019-11-06 22:13:28,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:29,033 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:29,086 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087558652] [2019-11-06 22:13:29,086 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:29,087 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:29,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156160541] [2019-11-06 22:13:29,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:29,094 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:29,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:29,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:29,101 INFO L87 Difference]: Start difference. First operand 851 states and 1260 transitions. Second operand 5 states. [2019-11-06 22:13:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:32,038 INFO L93 Difference]: Finished difference Result 2496 states and 3689 transitions. [2019-11-06 22:13:32,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:32,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2019-11-06 22:13:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:32,047 INFO L225 Difference]: With dead ends: 2496 [2019-11-06 22:13:32,047 INFO L226 Difference]: Without dead ends: 1658 [2019-11-06 22:13:32,051 INFO L630 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 [2019-11-06 22:13:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2019-11-06 22:13:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1630. [2019-11-06 22:13:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2019-11-06 22:13:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2403 transitions. [2019-11-06 22:13:32,118 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2403 transitions. Word has length 142 [2019-11-06 22:13:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:32,119 INFO L462 AbstractCegarLoop]: Abstraction has 1630 states and 2403 transitions. [2019-11-06 22:13:32,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2403 transitions. [2019-11-06 22:13:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 22:13:32,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:32,122 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:32,123 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:32,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1506911746, now seen corresponding path program 1 times [2019-11-06 22:13:32,123 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:32,123 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82292512] [2019-11-06 22:13:32,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:32,411 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:32,457 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82292512] [2019-11-06 22:13:32,457 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:32,458 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:32,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692143702] [2019-11-06 22:13:32,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:32,459 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:32,459 INFO L87 Difference]: Start difference. First operand 1630 states and 2403 transitions. Second operand 4 states. [2019-11-06 22:13:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:35,374 INFO L93 Difference]: Finished difference Result 4844 states and 7139 transitions. [2019-11-06 22:13:35,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:35,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-11-06 22:13:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:35,392 INFO L225 Difference]: With dead ends: 4844 [2019-11-06 22:13:35,392 INFO L226 Difference]: Without dead ends: 3246 [2019-11-06 22:13:35,396 INFO L630 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 [2019-11-06 22:13:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2019-11-06 22:13:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 1632. [2019-11-06 22:13:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2019-11-06 22:13:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2405 transitions. [2019-11-06 22:13:35,485 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2405 transitions. Word has length 143 [2019-11-06 22:13:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:35,486 INFO L462 AbstractCegarLoop]: Abstraction has 1632 states and 2405 transitions. [2019-11-06 22:13:35,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2405 transitions. [2019-11-06 22:13:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 22:13:35,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:35,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:35,490 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:35,491 INFO L82 PathProgramCache]: Analyzing trace with hash -705286279, now seen corresponding path program 1 times [2019-11-06 22:13:35,491 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:35,491 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522728690] [2019-11-06 22:13:35,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:35,793 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:35,836 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522728690] [2019-11-06 22:13:35,837 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:35,837 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:35,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51079538] [2019-11-06 22:13:35,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:35,838 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:35,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:35,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:35,839 INFO L87 Difference]: Start difference. First operand 1632 states and 2405 transitions. Second operand 4 states. [2019-11-06 22:13:38,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:38,225 INFO L93 Difference]: Finished difference Result 4281 states and 6311 transitions. [2019-11-06 22:13:38,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:38,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-11-06 22:13:38,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:38,241 INFO L225 Difference]: With dead ends: 4281 [2019-11-06 22:13:38,241 INFO L226 Difference]: Without dead ends: 2829 [2019-11-06 22:13:38,245 INFO L630 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 [2019-11-06 22:13:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2019-11-06 22:13:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2801. [2019-11-06 22:13:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2019-11-06 22:13:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 4081 transitions. [2019-11-06 22:13:38,388 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 4081 transitions. Word has length 144 [2019-11-06 22:13:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:38,389 INFO L462 AbstractCegarLoop]: Abstraction has 2801 states and 4081 transitions. [2019-11-06 22:13:38,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 4081 transitions. [2019-11-06 22:13:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 22:13:38,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:38,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:38,394 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:38,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:38,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2069030422, now seen corresponding path program 1 times [2019-11-06 22:13:38,395 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:38,395 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949857403] [2019-11-06 22:13:38,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:38,804 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:38,842 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949857403] [2019-11-06 22:13:38,842 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:38,843 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:38,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871174511] [2019-11-06 22:13:38,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:38,844 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:38,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:38,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:38,844 INFO L87 Difference]: Start difference. First operand 2801 states and 4081 transitions. Second operand 5 states. [2019-11-06 22:13:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:40,436 INFO L93 Difference]: Finished difference Result 5024 states and 7338 transitions. [2019-11-06 22:13:40,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:40,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-11-06 22:13:40,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:40,449 INFO L225 Difference]: With dead ends: 5024 [2019-11-06 22:13:40,449 INFO L226 Difference]: Without dead ends: 2393 [2019-11-06 22:13:40,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2019-11-06 22:13:40,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2393. [2019-11-06 22:13:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2019-11-06 22:13:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3482 transitions. [2019-11-06 22:13:40,547 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3482 transitions. Word has length 144 [2019-11-06 22:13:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:40,547 INFO L462 AbstractCegarLoop]: Abstraction has 2393 states and 3482 transitions. [2019-11-06 22:13:40,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3482 transitions. [2019-11-06 22:13:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:13:40,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:40,552 INFO L410 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] [2019-11-06 22:13:40,552 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:40,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:40,553 INFO L82 PathProgramCache]: Analyzing trace with hash -839538967, now seen corresponding path program 1 times [2019-11-06 22:13:40,553 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:40,553 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844501009] [2019-11-06 22:13:40,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:41,117 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:41,200 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844501009] [2019-11-06 22:13:41,200 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:41,201 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 22:13:41,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020018903] [2019-11-06 22:13:41,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 22:13:41,202 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:41,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 22:13:41,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:13:41,202 INFO L87 Difference]: Start difference. First operand 2393 states and 3482 transitions. Second operand 14 states. [2019-11-06 22:13:41,500 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-11-06 22:13:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:47,687 INFO L93 Difference]: Finished difference Result 10628 states and 16267 transitions. [2019-11-06 22:13:47,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-06 22:13:47,687 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 147 [2019-11-06 22:13:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:47,721 INFO L225 Difference]: With dead ends: 10628 [2019-11-06 22:13:47,722 INFO L226 Difference]: Without dead ends: 8437 [2019-11-06 22:13:47,728 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 22:13:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8437 states. [2019-11-06 22:13:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8437 to 5241. [2019-11-06 22:13:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5241 states. [2019-11-06 22:13:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 7870 transitions. [2019-11-06 22:13:48,046 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 7870 transitions. Word has length 147 [2019-11-06 22:13:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:48,047 INFO L462 AbstractCegarLoop]: Abstraction has 5241 states and 7870 transitions. [2019-11-06 22:13:48,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-06 22:13:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 7870 transitions. [2019-11-06 22:13:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:13:48,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:48,056 INFO L410 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] [2019-11-06 22:13:48,056 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1983851261, now seen corresponding path program 1 times [2019-11-06 22:13:48,057 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:48,057 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668730762] [2019-11-06 22:13:48,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:48,464 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:48,508 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668730762] [2019-11-06 22:13:48,508 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:48,508 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:48,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724995650] [2019-11-06 22:13:48,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:13:48,509 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:48,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:13:48,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:48,510 INFO L87 Difference]: Start difference. First operand 5241 states and 7870 transitions. Second operand 6 states. [2019-11-06 22:13:48,770 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:50,792 INFO L93 Difference]: Finished difference Result 7383 states and 11193 transitions. [2019-11-06 22:13:50,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:13:50,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2019-11-06 22:13:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:50,804 INFO L225 Difference]: With dead ends: 7383 [2019-11-06 22:13:50,804 INFO L226 Difference]: Without dead ends: 2962 [2019-11-06 22:13:50,811 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:13:50,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2019-11-06 22:13:50,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2393. [2019-11-06 22:13:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2019-11-06 22:13:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3467 transitions. [2019-11-06 22:13:50,929 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3467 transitions. Word has length 147 [2019-11-06 22:13:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:50,929 INFO L462 AbstractCegarLoop]: Abstraction has 2393 states and 3467 transitions. [2019-11-06 22:13:50,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:13:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3467 transitions. [2019-11-06 22:13:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:13:50,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:50,934 INFO L410 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] [2019-11-06 22:13:50,934 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:50,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1902905006, now seen corresponding path program 1 times [2019-11-06 22:13:50,935 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:50,935 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444009507] [2019-11-06 22:13:50,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:51,367 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:13:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:51,418 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444009507] [2019-11-06 22:13:51,418 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:51,418 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:13:51,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396084905] [2019-11-06 22:13:51,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:13:51,419 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:51,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:13:51,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:13:51,420 INFO L87 Difference]: Start difference. First operand 2393 states and 3467 transitions. Second operand 10 states. [2019-11-06 22:13:51,714 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:13:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:54,315 INFO L93 Difference]: Finished difference Result 8933 states and 13661 transitions. [2019-11-06 22:13:54,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:13:54,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2019-11-06 22:13:54,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:54,342 INFO L225 Difference]: With dead ends: 8933 [2019-11-06 22:13:54,343 INFO L226 Difference]: Without dead ends: 6742 [2019-11-06 22:13:54,348 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:13:54,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6742 states. [2019-11-06 22:13:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 4124. [2019-11-06 22:13:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4124 states. [2019-11-06 22:13:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 6152 transitions. [2019-11-06 22:13:54,631 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 6152 transitions. Word has length 147 [2019-11-06 22:13:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:54,632 INFO L462 AbstractCegarLoop]: Abstraction has 4124 states and 6152 transitions. [2019-11-06 22:13:54,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:13:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 6152 transitions. [2019-11-06 22:13:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:13:54,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:54,637 INFO L410 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] [2019-11-06 22:13:54,637 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:54,638 INFO L82 PathProgramCache]: Analyzing trace with hash 431327938, now seen corresponding path program 1 times [2019-11-06 22:13:54,638 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:54,638 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961432276] [2019-11-06 22:13:54,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat