/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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:12:38,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:12:38,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:12:38,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:12:38,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:12:38,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:12:38,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:12:38,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:12:38,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:12:38,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:12:38,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:12:38,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:12:38,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:12:38,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:12:38,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:12:38,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:12:38,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:12:38,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:12:38,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:12:38,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:12:38,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:12:38,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:12:38,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:12:38,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:12:38,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:12:38,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:12:38,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:12:38,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:12:38,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:12:38,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:12:38,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:12:38,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:12:38,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:12:38,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:12:38,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:12:38,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:12:38,312 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 22:12:38,326 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:12:38,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:12:38,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:12:38,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:12:38,328 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:12:38,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:12:38,328 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:12:38,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:12:38,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:12:38,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:12:38,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:12:38,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:12:38,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:12:38,330 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:12:38,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:12:38,330 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:12:38,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:12:38,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:12:38,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:12:38,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:12:38,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:12:38,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:12:38,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:12:38,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:12:38,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:12:38,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:12:38,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:12:38,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:12:38,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:12:38,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:12:38,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:12:38,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:12:38,670 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:12:38,670 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:12:38,671 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:12:38,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156cea609/370bf98e14c54763a0ae992e04ca7b8b/FLAG127c54160 [2019-11-06 22:12:39,290 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:12:39,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:12:39,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156cea609/370bf98e14c54763a0ae992e04ca7b8b/FLAG127c54160 [2019-11-06 22:12:39,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156cea609/370bf98e14c54763a0ae992e04ca7b8b [2019-11-06 22:12:39,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:12:39,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:12:39,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:12:39,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:12:39,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:12:39,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:39" (1/1) ... [2019-11-06 22:12:39,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abfb195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39, skipping insertion in model container [2019-11-06 22:12:39,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:39" (1/1) ... [2019-11-06 22:12:39,667 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:12:39,726 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:12:40,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:12:40,218 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:12:40,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:12:40,387 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:12:40,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40 WrapperNode [2019-11-06 22:12:40,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:12:40,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:12:40,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:12:40,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:12:40,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (1/1) ... [2019-11-06 22:12:40,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (1/1) ... [2019-11-06 22:12:40,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (1/1) ... [2019-11-06 22:12:40,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (1/1) ... [2019-11-06 22:12:40,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (1/1) ... [2019-11-06 22:12:40,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (1/1) ... [2019-11-06 22:12:40,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (1/1) ... [2019-11-06 22:12:40,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:12:40,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:12:40,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:12:40,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:12:40,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (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 22:12:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:12:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:12:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:12:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:12:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:12:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:12:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:12:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:12:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:12:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:12:41,967 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:12:41,968 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:12:41,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:41 BoogieIcfgContainer [2019-11-06 22:12:41,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:12:41,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:12:41,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:12:41,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:12:41,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:39" (1/3) ... [2019-11-06 22:12:41,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2925c3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:41, skipping insertion in model container [2019-11-06 22:12:41,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:40" (2/3) ... [2019-11-06 22:12:41,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2925c3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:41, skipping insertion in model container [2019-11-06 22:12:41,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:41" (3/3) ... [2019-11-06 22:12:41,988 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-11-06 22:12:42,000 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:12:42,020 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-06 22:12:42,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-06 22:12:42,066 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:12:42,067 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:12:42,067 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:12:42,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:12:42,067 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:12:42,068 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:12:42,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:12:42,068 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:12:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states. [2019-11-06 22:12:42,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-06 22:12:42,121 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:42,122 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] [2019-11-06 22:12:42,125 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:42,130 INFO L82 PathProgramCache]: Analyzing trace with hash -953301641, now seen corresponding path program 1 times [2019-11-06 22:12:42,140 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:42,141 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804690438] [2019-11-06 22:12:42,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:43,109 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:43,191 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 22:12:43,191 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804690438] [2019-11-06 22:12:43,192 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:43,193 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:43,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916653183] [2019-11-06 22:12:43,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:43,204 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:43,221 INFO L87 Difference]: Start difference. First operand 250 states. Second operand 5 states. [2019-11-06 22:12:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:45,557 INFO L93 Difference]: Finished difference Result 716 states and 1269 transitions. [2019-11-06 22:12:45,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:12:45,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2019-11-06 22:12:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:45,578 INFO L225 Difference]: With dead ends: 716 [2019-11-06 22:12:45,579 INFO L226 Difference]: Without dead ends: 471 [2019-11-06 22:12:45,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:12:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-11-06 22:12:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 450. [2019-11-06 22:12:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2019-11-06 22:12:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 654 transitions. [2019-11-06 22:12:45,689 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 654 transitions. Word has length 96 [2019-11-06 22:12:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:45,690 INFO L462 AbstractCegarLoop]: Abstraction has 450 states and 654 transitions. [2019-11-06 22:12:45,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 654 transitions. [2019-11-06 22:12:45,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-06 22:12:45,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:45,696 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] [2019-11-06 22:12:45,696 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:45,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2115143577, now seen corresponding path program 1 times [2019-11-06 22:12:45,697 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:45,697 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897067491] [2019-11-06 22:12:45,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:46,047 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:46,071 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 22:12:46,071 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897067491] [2019-11-06 22:12:46,072 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:46,072 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:46,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672068832] [2019-11-06 22:12:46,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:46,074 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:46,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:46,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:46,075 INFO L87 Difference]: Start difference. First operand 450 states and 654 transitions. Second operand 4 states. [2019-11-06 22:12:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:47,946 INFO L93 Difference]: Finished difference Result 1304 states and 1892 transitions. [2019-11-06 22:12:47,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:47,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2019-11-06 22:12:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:47,954 INFO L225 Difference]: With dead ends: 1304 [2019-11-06 22:12:47,954 INFO L226 Difference]: Without dead ends: 886 [2019-11-06 22:12:47,958 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 22:12:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2019-11-06 22:12:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 452. [2019-11-06 22:12:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-11-06 22:12:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 656 transitions. [2019-11-06 22:12:47,999 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 656 transitions. Word has length 97 [2019-11-06 22:12:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:47,999 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 656 transitions. [2019-11-06 22:12:48,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 656 transitions. [2019-11-06 22:12:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-06 22:12:48,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:48,003 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] [2019-11-06 22:12:48,003 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash 37790134, now seen corresponding path program 1 times [2019-11-06 22:12:48,004 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:48,004 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594152896] [2019-11-06 22:12:48,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:48,287 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:48,316 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 22:12:48,317 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594152896] [2019-11-06 22:12:48,317 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:48,317 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:48,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250043193] [2019-11-06 22:12:48,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:48,318 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:48,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:48,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:48,319 INFO L87 Difference]: Start difference. First operand 452 states and 656 transitions. Second operand 4 states. [2019-11-06 22:12:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:50,223 INFO L93 Difference]: Finished difference Result 1141 states and 1673 transitions. [2019-11-06 22:12:50,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:50,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-11-06 22:12:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:50,230 INFO L225 Difference]: With dead ends: 1141 [2019-11-06 22:12:50,230 INFO L226 Difference]: Without dead ends: 869 [2019-11-06 22:12:50,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-11-06 22:12:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 850. [2019-11-06 22:12:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2019-11-06 22:12:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1230 transitions. [2019-11-06 22:12:50,276 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1230 transitions. Word has length 98 [2019-11-06 22:12:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:50,277 INFO L462 AbstractCegarLoop]: Abstraction has 850 states and 1230 transitions. [2019-11-06 22:12:50,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1230 transitions. [2019-11-06 22:12:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-06 22:12:50,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:50,281 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] [2019-11-06 22:12:50,281 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:50,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1441582317, now seen corresponding path program 1 times [2019-11-06 22:12:50,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:50,282 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758680726] [2019-11-06 22:12:50,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:50,616 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:50,660 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 22:12:50,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758680726] [2019-11-06 22:12:50,661 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:50,662 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:50,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407922761] [2019-11-06 22:12:50,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:50,663 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:50,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:50,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:50,664 INFO L87 Difference]: Start difference. First operand 850 states and 1230 transitions. Second operand 5 states. [2019-11-06 22:12:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:51,930 INFO L93 Difference]: Finished difference Result 1334 states and 1945 transitions. [2019-11-06 22:12:51,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:51,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-11-06 22:12:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:51,936 INFO L225 Difference]: With dead ends: 1334 [2019-11-06 22:12:51,936 INFO L226 Difference]: Without dead ends: 654 [2019-11-06 22:12:51,939 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 22:12:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-11-06 22:12:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-11-06 22:12:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-11-06 22:12:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 940 transitions. [2019-11-06 22:12:51,986 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 940 transitions. Word has length 98 [2019-11-06 22:12:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:51,986 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 940 transitions. [2019-11-06 22:12:51,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 940 transitions. [2019-11-06 22:12:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-06 22:12:51,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:51,990 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] [2019-11-06 22:12:51,991 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:51,991 INFO L82 PathProgramCache]: Analyzing trace with hash 407293187, now seen corresponding path program 1 times [2019-11-06 22:12:51,992 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:51,992 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833717793] [2019-11-06 22:12:51,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:52,502 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:52,571 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 22:12:52,573 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833717793] [2019-11-06 22:12:52,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:52,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:52,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694943390] [2019-11-06 22:12:52,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:52,574 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:52,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:52,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:52,576 INFO L87 Difference]: Start difference. First operand 654 states and 940 transitions. Second operand 5 states. [2019-11-06 22:12:54,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:54,274 INFO L93 Difference]: Finished difference Result 1607 states and 2308 transitions. [2019-11-06 22:12:54,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:54,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-11-06 22:12:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:54,282 INFO L225 Difference]: With dead ends: 1607 [2019-11-06 22:12:54,282 INFO L226 Difference]: Without dead ends: 976 [2019-11-06 22:12:54,284 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 22:12:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2019-11-06 22:12:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 962. [2019-11-06 22:12:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2019-11-06 22:12:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1371 transitions. [2019-11-06 22:12:54,338 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1371 transitions. Word has length 100 [2019-11-06 22:12:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:54,338 INFO L462 AbstractCegarLoop]: Abstraction has 962 states and 1371 transitions. [2019-11-06 22:12:54,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1371 transitions. [2019-11-06 22:12:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-06 22:12:54,342 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:54,342 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] [2019-11-06 22:12:54,343 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:54,343 INFO L82 PathProgramCache]: Analyzing trace with hash 987827892, now seen corresponding path program 1 times [2019-11-06 22:12:54,343 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:54,344 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435381888] [2019-11-06 22:12:54,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:54,649 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:54,678 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 22:12:54,679 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435381888] [2019-11-06 22:12:54,680 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:54,680 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:54,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109045445] [2019-11-06 22:12:54,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:54,681 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:54,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:54,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:54,682 INFO L87 Difference]: Start difference. First operand 962 states and 1371 transitions. Second operand 4 states. [2019-11-06 22:12:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:56,551 INFO L93 Difference]: Finished difference Result 2376 states and 3448 transitions. [2019-11-06 22:12:56,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:56,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-11-06 22:12:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:56,565 INFO L225 Difference]: With dead ends: 2376 [2019-11-06 22:12:56,567 INFO L226 Difference]: Without dead ends: 1742 [2019-11-06 22:12:56,577 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2019-11-06 22:12:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1730. [2019-11-06 22:12:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1730 states. [2019-11-06 22:12:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2469 transitions. [2019-11-06 22:12:56,675 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2469 transitions. Word has length 102 [2019-11-06 22:12:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:56,676 INFO L462 AbstractCegarLoop]: Abstraction has 1730 states and 2469 transitions. [2019-11-06 22:12:56,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2469 transitions. [2019-11-06 22:12:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-06 22:12:56,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:56,679 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] [2019-11-06 22:12:56,679 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:56,680 INFO L82 PathProgramCache]: Analyzing trace with hash 945077457, now seen corresponding path program 1 times [2019-11-06 22:12:56,680 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:56,680 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782886389] [2019-11-06 22:12:56,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:57,002 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:57,027 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 22:12:57,027 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782886389] [2019-11-06 22:12:57,027 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:57,027 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:57,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033438499] [2019-11-06 22:12:57,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:57,028 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:57,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:57,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:57,029 INFO L87 Difference]: Start difference. First operand 1730 states and 2469 transitions. Second operand 5 states. [2019-11-06 22:12:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:57,990 INFO L93 Difference]: Finished difference Result 2605 states and 3741 transitions. [2019-11-06 22:12:57,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:57,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2019-11-06 22:12:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:57,998 INFO L225 Difference]: With dead ends: 2605 [2019-11-06 22:12:57,998 INFO L226 Difference]: Without dead ends: 1420 [2019-11-06 22:12:58,001 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 22:12:58,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2019-11-06 22:12:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2019-11-06 22:12:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2019-11-06 22:12:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2016 transitions. [2019-11-06 22:12:58,062 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2016 transitions. Word has length 102 [2019-11-06 22:12:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:58,062 INFO L462 AbstractCegarLoop]: Abstraction has 1420 states and 2016 transitions. [2019-11-06 22:12:58,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2016 transitions. [2019-11-06 22:12:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:12:58,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:58,065 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] [2019-11-06 22:12:58,066 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:58,066 INFO L82 PathProgramCache]: Analyzing trace with hash -250804370, now seen corresponding path program 1 times [2019-11-06 22:12:58,066 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:58,066 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597310930] [2019-11-06 22:12:58,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:58,323 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:12:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:58,346 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 22:12:58,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597310930] [2019-11-06 22:12:58,347 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:58,347 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:58,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451058197] [2019-11-06 22:12:58,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:58,349 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:58,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:58,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:58,350 INFO L87 Difference]: Start difference. First operand 1420 states and 2016 transitions. Second operand 4 states. [2019-11-06 22:12:58,546 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-11-06 22:12:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:59,640 INFO L93 Difference]: Finished difference Result 3489 states and 5085 transitions. [2019-11-06 22:12:59,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:59,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-11-06 22:12:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:59,658 INFO L225 Difference]: With dead ends: 3489 [2019-11-06 22:12:59,658 INFO L226 Difference]: Without dead ends: 2583 [2019-11-06 22:12:59,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2019-11-06 22:12:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2515. [2019-11-06 22:12:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2515 states. [2019-11-06 22:12:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3610 transitions. [2019-11-06 22:12:59,772 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3610 transitions. Word has length 104 [2019-11-06 22:12:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:59,772 INFO L462 AbstractCegarLoop]: Abstraction has 2515 states and 3610 transitions. [2019-11-06 22:12:59,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3610 transitions. [2019-11-06 22:12:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:12:59,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:59,776 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] [2019-11-06 22:12:59,777 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:59,777 INFO L82 PathProgramCache]: Analyzing trace with hash 858846089, now seen corresponding path program 1 times [2019-11-06 22:12:59,777 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:59,778 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653117477] [2019-11-06 22:12:59,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:00,077 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:13:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:00,112 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 22:13:00,112 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653117477] [2019-11-06 22:13:00,112 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:00,112 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:00,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581963291] [2019-11-06 22:13:00,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:00,113 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:00,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:00,114 INFO L87 Difference]: Start difference. First operand 2515 states and 3610 transitions. Second operand 5 states. [2019-11-06 22:13:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:01,691 INFO L93 Difference]: Finished difference Result 7288 states and 10449 transitions. [2019-11-06 22:13:01,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:01,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2019-11-06 22:13:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:01,716 INFO L225 Difference]: With dead ends: 7288 [2019-11-06 22:13:01,716 INFO L226 Difference]: Without dead ends: 4816 [2019-11-06 22:13:01,721 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 22:13:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2019-11-06 22:13:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4748. [2019-11-06 22:13:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2019-11-06 22:13:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 6753 transitions. [2019-11-06 22:13:01,933 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 6753 transitions. Word has length 104 [2019-11-06 22:13:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:01,933 INFO L462 AbstractCegarLoop]: Abstraction has 4748 states and 6753 transitions. [2019-11-06 22:13:01,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 6753 transitions. [2019-11-06 22:13:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 22:13:01,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:01,941 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] [2019-11-06 22:13:01,942 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:01,943 INFO L82 PathProgramCache]: Analyzing trace with hash 870236013, now seen corresponding path program 1 times [2019-11-06 22:13:01,943 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:01,947 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794711391] [2019-11-06 22:13:01,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:02,165 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:13:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:02,186 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 22:13:02,187 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794711391] [2019-11-06 22:13:02,187 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:02,187 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:02,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708733287] [2019-11-06 22:13:02,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:02,188 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:02,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:02,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:02,188 INFO L87 Difference]: Start difference. First operand 4748 states and 6753 transitions. Second operand 4 states. [2019-11-06 22:13:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:03,491 INFO L93 Difference]: Finished difference Result 14046 states and 20004 transitions. [2019-11-06 22:13:03,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:03,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-11-06 22:13:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:03,526 INFO L225 Difference]: With dead ends: 14046 [2019-11-06 22:13:03,526 INFO L226 Difference]: Without dead ends: 9406 [2019-11-06 22:13:03,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2019-11-06 22:13:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 4754. [2019-11-06 22:13:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4754 states. [2019-11-06 22:13:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4754 states to 4754 states and 6759 transitions. [2019-11-06 22:13:03,872 INFO L78 Accepts]: Start accepts. Automaton has 4754 states and 6759 transitions. Word has length 105 [2019-11-06 22:13:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:03,873 INFO L462 AbstractCegarLoop]: Abstraction has 4754 states and 6759 transitions. [2019-11-06 22:13:03,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4754 states and 6759 transitions. [2019-11-06 22:13:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-06 22:13:03,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:03,879 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] [2019-11-06 22:13:03,880 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:03,880 INFO L82 PathProgramCache]: Analyzing trace with hash -95586230, now seen corresponding path program 1 times [2019-11-06 22:13:03,880 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:03,880 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738957703] [2019-11-06 22:13:03,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:04,168 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:13:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:04,198 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 22:13:04,198 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738957703] [2019-11-06 22:13:04,198 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:04,198 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:04,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282360112] [2019-11-06 22:13:04,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:04,199 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:04,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:04,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:04,200 INFO L87 Difference]: Start difference. First operand 4754 states and 6759 transitions. Second operand 5 states. [2019-11-06 22:13:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:05,123 INFO L93 Difference]: Finished difference Result 9466 states and 13462 transitions. [2019-11-06 22:13:05,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:05,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2019-11-06 22:13:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:05,149 INFO L225 Difference]: With dead ends: 9466 [2019-11-06 22:13:05,149 INFO L226 Difference]: Without dead ends: 4748 [2019-11-06 22:13:05,157 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 22:13:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2019-11-06 22:13:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 4748. [2019-11-06 22:13:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2019-11-06 22:13:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 6747 transitions. [2019-11-06 22:13:05,431 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 6747 transitions. Word has length 106 [2019-11-06 22:13:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:05,431 INFO L462 AbstractCegarLoop]: Abstraction has 4748 states and 6747 transitions. [2019-11-06 22:13:05,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 6747 transitions. [2019-11-06 22:13:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-06 22:13:05,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:05,438 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] [2019-11-06 22:13:05,438 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:05,438 INFO L82 PathProgramCache]: Analyzing trace with hash -500434516, now seen corresponding path program 1 times [2019-11-06 22:13:05,438 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:05,439 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058460855] [2019-11-06 22:13:05,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:05,730 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:13:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:05,756 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 22:13:05,757 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058460855] [2019-11-06 22:13:05,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:05,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:05,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197793100] [2019-11-06 22:13:05,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:05,758 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:05,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:05,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:05,759 INFO L87 Difference]: Start difference. First operand 4748 states and 6747 transitions. Second operand 4 states. [2019-11-06 22:13:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:07,479 INFO L93 Difference]: Finished difference Result 10891 states and 15571 transitions. [2019-11-06 22:13:07,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:07,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-11-06 22:13:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:07,496 INFO L225 Difference]: With dead ends: 10891 [2019-11-06 22:13:07,496 INFO L226 Difference]: Without dead ends: 7075 [2019-11-06 22:13:07,503 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 22:13:07,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7075 states. [2019-11-06 22:13:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7075 to 7007. [2019-11-06 22:13:07,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7007 states. [2019-11-06 22:13:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 9789 transitions. [2019-11-06 22:13:07,817 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 9789 transitions. Word has length 106 [2019-11-06 22:13:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:07,817 INFO L462 AbstractCegarLoop]: Abstraction has 7007 states and 9789 transitions. [2019-11-06 22:13:07,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:07,818 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 9789 transitions. [2019-11-06 22:13:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:13:07,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:07,826 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] [2019-11-06 22:13:07,827 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:07,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1963079784, now seen corresponding path program 1 times [2019-11-06 22:13:07,827 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:07,827 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953549879] [2019-11-06 22:13:07,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:08,253 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:13:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:08,289 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 22:13:08,290 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953549879] [2019-11-06 22:13:08,290 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:08,290 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:13:08,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082439625] [2019-11-06 22:13:08,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 22:13:08,291 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:08,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 22:13:08,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:13:08,292 INFO L87 Difference]: Start difference. First operand 7007 states and 9789 transitions. Second operand 13 states. [2019-11-06 22:13:08,671 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-11-06 22:13:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:11,227 INFO L93 Difference]: Finished difference Result 22484 states and 33494 transitions. [2019-11-06 22:13:11,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:13:11,228 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2019-11-06 22:13:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:11,259 INFO L225 Difference]: With dead ends: 22484 [2019-11-06 22:13:11,259 INFO L226 Difference]: Without dead ends: 18976 [2019-11-06 22:13:11,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:13:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18976 states. [2019-11-06 22:13:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18976 to 15722. [2019-11-06 22:13:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15722 states. [2019-11-06 22:13:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15722 states to 15722 states and 22674 transitions. [2019-11-06 22:13:12,220 INFO L78 Accepts]: Start accepts. Automaton has 15722 states and 22674 transitions. Word has length 108 [2019-11-06 22:13:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:12,220 INFO L462 AbstractCegarLoop]: Abstraction has 15722 states and 22674 transitions. [2019-11-06 22:13:12,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 22:13:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15722 states and 22674 transitions. [2019-11-06 22:13:12,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:13:12,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:12,231 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] [2019-11-06 22:13:12,231 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1808632579, now seen corresponding path program 1 times [2019-11-06 22:13:12,232 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:12,232 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837604418] [2019-11-06 22:13:12,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:12,708 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-11-06 22:13:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:12,736 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 22:13:12,736 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837604418] [2019-11-06 22:13:12,737 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:12,737 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:13:12,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044564942] [2019-11-06 22:13:12,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:13:12,738 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:13:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:13:12,738 INFO L87 Difference]: Start difference. First operand 15722 states and 22674 transitions. Second operand 9 states. [2019-11-06 22:13:12,972 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 164