/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.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:13:12,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:13:12,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:13:12,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:13:12,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:13:12,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:13:12,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:13:12,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:13:12,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:13:12,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:13:12,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:13:12,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:13:12,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:13:12,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:13:12,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:13:12,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:13:12,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:13:12,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:13:12,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:13:12,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:13:12,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:13:12,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:13:12,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:13:12,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:13:12,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:13:12,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:13:12,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:13:12,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:13:12,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:13:12,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:13:12,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:13:12,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:13:12,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:13:12,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:13:12,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:13:12,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:13:12,890 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 22:13:12,923 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:13:12,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:13:12,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:13:12,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:13:12,925 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:13:12,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:13:12,929 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:13:12,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:13:12,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:13:12,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:13:12,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:13:12,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:13:12,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:13:12,932 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:13:12,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:13:12,932 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:13:12,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:13:12,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:13:12,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:13:12,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:13:12,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:13:12,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:13:12,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:13:12,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:13:12,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:13:12,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:13:12,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:13:12,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:13:12,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:13:13,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:13:13,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:13:13,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:13:13,226 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:13:13,226 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:13:13,227 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:13:13,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563400314/383ec80d64524db2814f792b9f71060d/FLAGc73fb2142 [2019-11-06 22:13:13,892 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:13:13,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:13:13,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563400314/383ec80d64524db2814f792b9f71060d/FLAGc73fb2142 [2019-11-06 22:13:14,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563400314/383ec80d64524db2814f792b9f71060d [2019-11-06 22:13:14,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:13:14,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:13:14,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:14,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:13:14,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:13:14,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:14,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fec4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14, skipping insertion in model container [2019-11-06 22:13:14,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:14,176 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:13:14,247 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:13:14,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:14,796 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:13:14,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:14,985 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:13:14,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14 WrapperNode [2019-11-06 22:13:14,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:14,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:13:14,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:13:14,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:13:14,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:14,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:15,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:15,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:15,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:15,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:15,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ... [2019-11-06 22:13:15,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:13:15,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:13:15,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:13:15,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:13:15,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (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 22:13:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:13:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:13:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:13:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:13:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:13:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:13:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:13:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:13:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:13:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:13:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:13:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:13:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:13:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:13:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:13:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:13:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:13:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:13:16,751 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:13:16,751 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:13:16,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:16 BoogieIcfgContainer [2019-11-06 22:13:16,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:13:16,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:13:16,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:13:16,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:13:16,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:14" (1/3) ... [2019-11-06 22:13:16,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29747075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:16, skipping insertion in model container [2019-11-06 22:13:16,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (2/3) ... [2019-11-06 22:13:16,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29747075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:16, skipping insertion in model container [2019-11-06 22:13:16,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:16" (3/3) ... [2019-11-06 22:13:16,766 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:13:16,776 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:13:16,786 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:13:16,798 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:13:16,827 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:13:16,827 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:13:16,828 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:13:16,828 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:13:16,828 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:13:16,828 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:13:16,828 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:13:16,828 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:13:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states. [2019-11-06 22:13:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-06 22:13:16,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:16,871 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] [2019-11-06 22:13:16,873 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1545579630, now seen corresponding path program 1 times [2019-11-06 22:13:16,889 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:16,889 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577557843] [2019-11-06 22:13:16,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:17,825 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:17,893 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 22:13:17,894 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577557843] [2019-11-06 22:13:17,895 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:17,895 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:17,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499930495] [2019-11-06 22:13:17,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:17,903 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:17,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:17,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:17,923 INFO L87 Difference]: Start difference. First operand 299 states. Second operand 4 states. [2019-11-06 22:13:18,256 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-11-06 22:13:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:19,861 INFO L93 Difference]: Finished difference Result 569 states and 997 transitions. [2019-11-06 22:13:19,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:19,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-11-06 22:13:19,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:19,883 INFO L225 Difference]: With dead ends: 569 [2019-11-06 22:13:19,884 INFO L226 Difference]: Without dead ends: 465 [2019-11-06 22:13:19,888 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 22:13:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2019-11-06 22:13:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 463. [2019-11-06 22:13:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-11-06 22:13:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 686 transitions. [2019-11-06 22:13:19,975 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 686 transitions. Word has length 145 [2019-11-06 22:13:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:19,976 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 686 transitions. [2019-11-06 22:13:19,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 686 transitions. [2019-11-06 22:13:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-06 22:13:19,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:19,981 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] [2019-11-06 22:13:19,982 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:19,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1852792009, now seen corresponding path program 1 times [2019-11-06 22:13:19,982 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:19,983 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072425359] [2019-11-06 22:13:19,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:20,591 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:20,672 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 22:13:20,672 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072425359] [2019-11-06 22:13:20,672 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:20,673 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:20,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623404846] [2019-11-06 22:13:20,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:20,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:20,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:20,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:20,676 INFO L87 Difference]: Start difference. First operand 463 states and 686 transitions. Second operand 5 states. [2019-11-06 22:13:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:22,815 INFO L93 Difference]: Finished difference Result 1349 states and 1997 transitions. [2019-11-06 22:13:22,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:22,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-11-06 22:13:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:22,821 INFO L225 Difference]: With dead ends: 1349 [2019-11-06 22:13:22,821 INFO L226 Difference]: Without dead ends: 899 [2019-11-06 22:13:22,825 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2019-11-06 22:13:22,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2019-11-06 22:13:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-11-06 22:13:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1319 transitions. [2019-11-06 22:13:22,887 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1319 transitions. Word has length 145 [2019-11-06 22:13:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:22,887 INFO L462 AbstractCegarLoop]: Abstraction has 897 states and 1319 transitions. [2019-11-06 22:13:22,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1319 transitions. [2019-11-06 22:13:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 22:13:22,892 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:22,892 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] [2019-11-06 22:13:22,892 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:22,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:22,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1132437897, now seen corresponding path program 1 times [2019-11-06 22:13:22,893 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:22,893 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533480106] [2019-11-06 22:13:22,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:23,226 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:23,341 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 22:13:23,342 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533480106] [2019-11-06 22:13:23,342 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:23,342 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:23,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990472484] [2019-11-06 22:13:23,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:23,344 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:23,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:23,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:23,345 INFO L87 Difference]: Start difference. First operand 897 states and 1319 transitions. Second operand 4 states. [2019-11-06 22:13:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:25,681 INFO L93 Difference]: Finished difference Result 2645 states and 3887 transitions. [2019-11-06 22:13:25,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:25,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-11-06 22:13:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:25,693 INFO L225 Difference]: With dead ends: 2645 [2019-11-06 22:13:25,693 INFO L226 Difference]: Without dead ends: 1780 [2019-11-06 22:13:25,696 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 22:13:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2019-11-06 22:13:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 899. [2019-11-06 22:13:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-11-06 22:13:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1321 transitions. [2019-11-06 22:13:25,747 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1321 transitions. Word has length 146 [2019-11-06 22:13:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:25,747 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1321 transitions. [2019-11-06 22:13:25,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1321 transitions. [2019-11-06 22:13:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:13:25,751 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:25,751 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 22:13:25,751 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:25,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:25,752 INFO L82 PathProgramCache]: Analyzing trace with hash 18878169, now seen corresponding path program 1 times [2019-11-06 22:13:25,752 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:25,752 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799255458] [2019-11-06 22:13:25,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:26,112 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:26,228 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 22:13:26,229 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799255458] [2019-11-06 22:13:26,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:26,230 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:26,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289958836] [2019-11-06 22:13:26,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:26,231 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:26,232 INFO L87 Difference]: Start difference. First operand 899 states and 1321 transitions. Second operand 4 states. [2019-11-06 22:13:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:28,242 INFO L93 Difference]: Finished difference Result 2451 states and 3620 transitions. [2019-11-06 22:13:28,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:28,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-11-06 22:13:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:28,256 INFO L225 Difference]: With dead ends: 2451 [2019-11-06 22:13:28,256 INFO L226 Difference]: Without dead ends: 1734 [2019-11-06 22:13:28,258 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 22:13:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2019-11-06 22:13:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2019-11-06 22:13:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2019-11-06 22:13:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2523 transitions. [2019-11-06 22:13:28,334 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2523 transitions. Word has length 147 [2019-11-06 22:13:28,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:28,334 INFO L462 AbstractCegarLoop]: Abstraction has 1732 states and 2523 transitions. [2019-11-06 22:13:28,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2523 transitions. [2019-11-06 22:13:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:13:28,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:28,338 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 22:13:28,339 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:28,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1632040732, now seen corresponding path program 1 times [2019-11-06 22:13:28,340 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:28,340 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699426351] [2019-11-06 22:13:28,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:28,759 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:28,798 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 22:13:28,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699426351] [2019-11-06 22:13:28,798 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:28,798 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:28,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693776276] [2019-11-06 22:13:28,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:28,800 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:28,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:28,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:28,801 INFO L87 Difference]: Start difference. First operand 1732 states and 2523 transitions. Second operand 5 states. [2019-11-06 22:13:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:30,094 INFO L93 Difference]: Finished difference Result 2881 states and 4212 transitions. [2019-11-06 22:13:30,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:30,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-11-06 22:13:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:30,105 INFO L225 Difference]: With dead ends: 2881 [2019-11-06 22:13:30,105 INFO L226 Difference]: Without dead ends: 1321 [2019-11-06 22:13:30,110 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 22:13:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2019-11-06 22:13:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1321. [2019-11-06 22:13:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2019-11-06 22:13:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1916 transitions. [2019-11-06 22:13:30,202 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1916 transitions. Word has length 147 [2019-11-06 22:13:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:30,203 INFO L462 AbstractCegarLoop]: Abstraction has 1321 states and 1916 transitions. [2019-11-06 22:13:30,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1916 transitions. [2019-11-06 22:13:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 22:13:30,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:30,210 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, 1, 1, 1] [2019-11-06 22:13:30,210 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1705432715, now seen corresponding path program 1 times [2019-11-06 22:13:30,211 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:30,212 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259567438] [2019-11-06 22:13:30,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:30,797 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:30,898 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 22:13:30,900 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259567438] [2019-11-06 22:13:30,901 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:30,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:13:30,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587645487] [2019-11-06 22:13:30,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:13:30,903 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:30,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:13:30,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:13:30,904 INFO L87 Difference]: Start difference. First operand 1321 states and 1916 transitions. Second operand 9 states. [2019-11-06 22:13:31,311 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-11-06 22:13:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:33,665 INFO L93 Difference]: Finished difference Result 3867 states and 5900 transitions. [2019-11-06 22:13:33,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:13:33,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2019-11-06 22:13:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:33,686 INFO L225 Difference]: With dead ends: 3867 [2019-11-06 22:13:33,690 INFO L226 Difference]: Without dead ends: 2751 [2019-11-06 22:13:33,696 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:13:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2019-11-06 22:13:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 1652. [2019-11-06 22:13:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2019-11-06 22:13:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2413 transitions. [2019-11-06 22:13:33,900 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2413 transitions. Word has length 150 [2019-11-06 22:13:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:33,901 INFO L462 AbstractCegarLoop]: Abstraction has 1652 states and 2413 transitions. [2019-11-06 22:13:33,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:13:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2413 transitions. [2019-11-06 22:13:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 22:13:33,907 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:33,907 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, 1, 1, 1] [2019-11-06 22:13:33,908 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:33,908 INFO L82 PathProgramCache]: Analyzing trace with hash -912214424, now seen corresponding path program 1 times [2019-11-06 22:13:33,909 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:33,909 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229136057] [2019-11-06 22:13:33,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:34,420 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:34,460 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 22:13:34,460 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229136057] [2019-11-06 22:13:34,461 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:34,461 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:34,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043197269] [2019-11-06 22:13:34,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:34,462 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:34,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:34,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:34,463 INFO L87 Difference]: Start difference. First operand 1652 states and 2413 transitions. Second operand 5 states. [2019-11-06 22:13:36,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:36,395 INFO L93 Difference]: Finished difference Result 4332 states and 6340 transitions. [2019-11-06 22:13:36,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:36,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-11-06 22:13:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:36,407 INFO L225 Difference]: With dead ends: 4332 [2019-11-06 22:13:36,407 INFO L226 Difference]: Without dead ends: 2703 [2019-11-06 22:13:36,410 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2019-11-06 22:13:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2701. [2019-11-06 22:13:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2701 states. [2019-11-06 22:13:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3924 transitions. [2019-11-06 22:13:36,584 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3924 transitions. Word has length 150 [2019-11-06 22:13:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:36,585 INFO L462 AbstractCegarLoop]: Abstraction has 2701 states and 3924 transitions. [2019-11-06 22:13:36,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3924 transitions. [2019-11-06 22:13:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 22:13:36,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:36,592 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, 1, 1, 1, 1, 1] [2019-11-06 22:13:36,593 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1681251574, now seen corresponding path program 1 times [2019-11-06 22:13:36,594 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:36,594 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325002951] [2019-11-06 22:13:36,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:36,903 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:36,942 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 22:13:36,943 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325002951] [2019-11-06 22:13:36,943 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:36,944 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:36,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213609806] [2019-11-06 22:13:36,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:36,945 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:36,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:36,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:36,946 INFO L87 Difference]: Start difference. First operand 2701 states and 3924 transitions. Second operand 4 states. [2019-11-06 22:13:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:39,113 INFO L93 Difference]: Finished difference Result 7038 states and 10298 transitions. [2019-11-06 22:13:39,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:39,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-11-06 22:13:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:39,133 INFO L225 Difference]: With dead ends: 7038 [2019-11-06 22:13:39,134 INFO L226 Difference]: Without dead ends: 4666 [2019-11-06 22:13:39,139 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 22:13:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2019-11-06 22:13:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4664. [2019-11-06 22:13:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2019-11-06 22:13:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6720 transitions. [2019-11-06 22:13:39,413 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 6720 transitions. Word has length 152 [2019-11-06 22:13:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:39,414 INFO L462 AbstractCegarLoop]: Abstraction has 4664 states and 6720 transitions. [2019-11-06 22:13:39,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 6720 transitions. [2019-11-06 22:13:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 22:13:39,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:39,420 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, 1, 1, 1, 1, 1] [2019-11-06 22:13:39,421 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash -344412185, now seen corresponding path program 1 times [2019-11-06 22:13:39,421 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:39,421 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011950163] [2019-11-06 22:13:39,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:39,800 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:39,834 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 22:13:39,835 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011950163] [2019-11-06 22:13:39,835 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:39,835 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:39,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053347489] [2019-11-06 22:13:39,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:39,836 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:39,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:39,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:39,837 INFO L87 Difference]: Start difference. First operand 4664 states and 6720 transitions. Second operand 5 states. [2019-11-06 22:13:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:41,017 INFO L93 Difference]: Finished difference Result 7769 states and 11256 transitions. [2019-11-06 22:13:41,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:41,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2019-11-06 22:13:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:41,034 INFO L225 Difference]: With dead ends: 7769 [2019-11-06 22:13:41,034 INFO L226 Difference]: Without dead ends: 4098 [2019-11-06 22:13:41,042 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 22:13:41,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2019-11-06 22:13:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 4098. [2019-11-06 22:13:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2019-11-06 22:13:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5895 transitions. [2019-11-06 22:13:41,266 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 5895 transitions. Word has length 152 [2019-11-06 22:13:41,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:41,266 INFO L462 AbstractCegarLoop]: Abstraction has 4098 states and 5895 transitions. [2019-11-06 22:13:41,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 5895 transitions. [2019-11-06 22:13:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-06 22:13:41,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:41,276 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:41,276 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash 71132805, now seen corresponding path program 1 times [2019-11-06 22:13:41,278 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:41,279 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228608923] [2019-11-06 22:13:41,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:41,570 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:41,598 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 22:13:41,598 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228608923] [2019-11-06 22:13:41,598 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:41,598 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:41,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220264896] [2019-11-06 22:13:41,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:41,599 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:41,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:41,600 INFO L87 Difference]: Start difference. First operand 4098 states and 5895 transitions. Second operand 4 states. [2019-11-06 22:13:41,870 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-11-06 22:13:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:43,304 INFO L93 Difference]: Finished difference Result 10865 states and 15855 transitions. [2019-11-06 22:13:43,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:43,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-11-06 22:13:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:43,333 INFO L225 Difference]: With dead ends: 10865 [2019-11-06 22:13:43,333 INFO L226 Difference]: Without dead ends: 7902 [2019-11-06 22:13:43,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2019-11-06 22:13:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7900. [2019-11-06 22:13:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7900 states. [2019-11-06 22:13:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 11351 transitions. [2019-11-06 22:13:43,730 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 11351 transitions. Word has length 155 [2019-11-06 22:13:43,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:43,730 INFO L462 AbstractCegarLoop]: Abstraction has 7900 states and 11351 transitions. [2019-11-06 22:13:43,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 11351 transitions. [2019-11-06 22:13:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-06 22:13:43,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:43,740 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:43,740 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:43,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1126763328, now seen corresponding path program 1 times [2019-11-06 22:13:43,741 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:43,741 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818723645] [2019-11-06 22:13:43,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:44,165 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-11-06 22:13:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:44,207 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 22:13:44,208 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818723645] [2019-11-06 22:13:44,208 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:44,208 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:44,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924725532] [2019-11-06 22:13:44,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:44,209 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:44,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:44,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:44,210 INFO L87 Difference]: Start difference. First operand 7900 states and 11351 transitions. Second operand 5 states. [2019-11-06 22:13:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:46,667 INFO L93 Difference]: Finished difference Result 23082 states and 33193 transitions. [2019-11-06 22:13:46,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:46,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2019-11-06 22:13:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:46,696 INFO L225 Difference]: With dead ends: 23082 [2019-11-06 22:13:46,696 INFO L226 Difference]: Without dead ends: 15225 [2019-11-06 22:13:46,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15225 states.