/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_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:13:44,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:13:44,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:13:44,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:13:44,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:13:44,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:13:44,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:13:44,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:13:44,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:13:44,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:13:44,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:13:44,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:13:44,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:13:44,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:13:44,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:13:44,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:13:44,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:13:44,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:13:44,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:13:44,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:13:44,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:13:44,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:13:44,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:13:44,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:13:44,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:13:44,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:13:44,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:13:44,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:13:44,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:13:44,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:13:44,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:13:44,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:13:44,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:13:44,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:13:44,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:13:44,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:13:44,419 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 22:13:44,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:13:44,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:13:44,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:13:44,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:13:44,443 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:13:44,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:13:44,443 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:13:44,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:13:44,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:13:44,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:13:44,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:13:44,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:13:44,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:13:44,446 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:13:44,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:13:44,446 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:13:44,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:13:44,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:13:44,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:13:44,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:13:44,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:13:44,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:13:44,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:13:44,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:13:44,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:13:44,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:13:44,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:13:44,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:13:44,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:13:44,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:13:44,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:13:44,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:13:44,814 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:13:44,814 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:13:44,815 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:13:44,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9c1f2b22/6106a156c3c54539939ee2dc414cf739/FLAGa825e770f [2019-11-06 22:13:45,419 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:13:45,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:13:45,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9c1f2b22/6106a156c3c54539939ee2dc414cf739/FLAGa825e770f [2019-11-06 22:13:45,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9c1f2b22/6106a156c3c54539939ee2dc414cf739 [2019-11-06 22:13:45,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:13:45,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:13:45,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:45,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:13:45,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:13:45,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:45" (1/1) ... [2019-11-06 22:13:45,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b24e2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:45, skipping insertion in model container [2019-11-06 22:13:45,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:45" (1/1) ... [2019-11-06 22:13:45,752 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:13:45,792 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:13:46,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:46,207 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:13:46,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:46,308 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:13:46,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46 WrapperNode [2019-11-06 22:13:46,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:46,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:13:46,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:13:46,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:13:46,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (1/1) ... [2019-11-06 22:13:46,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (1/1) ... [2019-11-06 22:13:46,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (1/1) ... [2019-11-06 22:13:46,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (1/1) ... [2019-11-06 22:13:46,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (1/1) ... [2019-11-06 22:13:46,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (1/1) ... [2019-11-06 22:13:46,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (1/1) ... [2019-11-06 22:13:46,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:13:46,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:13:46,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:13:46,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:13:46,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (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 22:13:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:13:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:13:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:13:46,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:13:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:13:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:13:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:13:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:13:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:13:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:13:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:13:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:13:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:13:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:13:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:13:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:13:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:13:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:13:47,290 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:13:47,290 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:13:47,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:47 BoogieIcfgContainer [2019-11-06 22:13:47,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:13:47,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:13:47,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:13:47,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:13:47,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:45" (1/3) ... [2019-11-06 22:13:47,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b5dab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:47, skipping insertion in model container [2019-11-06 22:13:47,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:46" (2/3) ... [2019-11-06 22:13:47,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b5dab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:47, skipping insertion in model container [2019-11-06 22:13:47,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:47" (3/3) ... [2019-11-06 22:13:47,299 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:13:47,308 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:13:47,316 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:13:47,327 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:13:47,354 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:13:47,354 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:13:47,354 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:13:47,354 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:13:47,354 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:13:47,355 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:13:47,355 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:13:47,355 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:13:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2019-11-06 22:13:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:13:47,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:47,384 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] [2019-11-06 22:13:47,386 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:47,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:47,392 INFO L82 PathProgramCache]: Analyzing trace with hash 273290580, now seen corresponding path program 1 times [2019-11-06 22:13:47,400 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:47,400 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876892120] [2019-11-06 22:13:47,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:48,059 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:13:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:48,105 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876892120] [2019-11-06 22:13:48,106 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:48,107 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:13:48,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302973427] [2019-11-06 22:13:48,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:13:48,117 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:48,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:13:48,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:13:48,132 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 7 states. [2019-11-06 22:13:48,363 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-06 22:13:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:49,523 INFO L93 Difference]: Finished difference Result 731 states and 1151 transitions. [2019-11-06 22:13:49,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 22:13:49,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2019-11-06 22:13:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:49,550 INFO L225 Difference]: With dead ends: 731 [2019-11-06 22:13:49,550 INFO L226 Difference]: Without dead ends: 632 [2019-11-06 22:13:49,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:13:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-11-06 22:13:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 425. [2019-11-06 22:13:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2019-11-06 22:13:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 641 transitions. [2019-11-06 22:13:49,664 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 641 transitions. Word has length 53 [2019-11-06 22:13:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:49,666 INFO L462 AbstractCegarLoop]: Abstraction has 425 states and 641 transitions. [2019-11-06 22:13:49,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:13:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 641 transitions. [2019-11-06 22:13:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:13:49,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:49,669 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] [2019-11-06 22:13:49,670 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1842914518, now seen corresponding path program 1 times [2019-11-06 22:13:49,671 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:49,671 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306447503] [2019-11-06 22:13:49,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:49,966 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:13:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:49,982 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 22:13:49,983 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306447503] [2019-11-06 22:13:49,983 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:49,983 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:49,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236806097] [2019-11-06 22:13:49,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:49,987 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:49,987 INFO L87 Difference]: Start difference. First operand 425 states and 641 transitions. Second operand 4 states. [2019-11-06 22:13:50,135 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-11-06 22:13:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:50,706 INFO L93 Difference]: Finished difference Result 1108 states and 1693 transitions. [2019-11-06 22:13:50,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:50,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-11-06 22:13:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:50,712 INFO L225 Difference]: With dead ends: 1108 [2019-11-06 22:13:50,712 INFO L226 Difference]: Without dead ends: 751 [2019-11-06 22:13:50,715 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2019-11-06 22:13:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 749. [2019-11-06 22:13:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-11-06 22:13:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1125 transitions. [2019-11-06 22:13:50,765 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1125 transitions. Word has length 56 [2019-11-06 22:13:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:50,766 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 1125 transitions. [2019-11-06 22:13:50,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1125 transitions. [2019-11-06 22:13:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:13:50,777 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:50,777 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] [2019-11-06 22:13:50,778 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:50,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:50,778 INFO L82 PathProgramCache]: Analyzing trace with hash -315457832, now seen corresponding path program 1 times [2019-11-06 22:13:50,778 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:50,779 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985658830] [2019-11-06 22:13:50,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:51,016 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:13:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:51,036 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985658830] [2019-11-06 22:13:51,036 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:51,036 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:51,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966424100] [2019-11-06 22:13:51,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:51,042 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:51,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:51,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:51,049 INFO L87 Difference]: Start difference. First operand 749 states and 1125 transitions. Second operand 4 states. [2019-11-06 22:13:51,197 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-11-06 22:13:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:51,796 INFO L93 Difference]: Finished difference Result 2012 states and 3038 transitions. [2019-11-06 22:13:51,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:51,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-11-06 22:13:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:51,805 INFO L225 Difference]: With dead ends: 2012 [2019-11-06 22:13:51,806 INFO L226 Difference]: Without dead ends: 1339 [2019-11-06 22:13:51,808 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2019-11-06 22:13:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1337. [2019-11-06 22:13:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2019-11-06 22:13:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1974 transitions. [2019-11-06 22:13:51,877 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1974 transitions. Word has length 56 [2019-11-06 22:13:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:51,878 INFO L462 AbstractCegarLoop]: Abstraction has 1337 states and 1974 transitions. [2019-11-06 22:13:51,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1974 transitions. [2019-11-06 22:13:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:13:51,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:51,880 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] [2019-11-06 22:13:51,881 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:51,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:51,881 INFO L82 PathProgramCache]: Analyzing trace with hash -622080838, now seen corresponding path program 1 times [2019-11-06 22:13:51,881 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:51,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213454791] [2019-11-06 22:13:51,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:52,173 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:13:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:52,220 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 22:13:52,220 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213454791] [2019-11-06 22:13:52,220 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:52,221 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:13:52,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172998611] [2019-11-06 22:13:52,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:13:52,222 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:52,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:13:52,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:13:52,222 INFO L87 Difference]: Start difference. First operand 1337 states and 1974 transitions. Second operand 11 states. [2019-11-06 22:13:52,420 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-11-06 22:13:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:55,178 INFO L93 Difference]: Finished difference Result 7876 states and 11683 transitions. [2019-11-06 22:13:55,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:13:55,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2019-11-06 22:13:55,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:55,220 INFO L225 Difference]: With dead ends: 7876 [2019-11-06 22:13:55,220 INFO L226 Difference]: Without dead ends: 7375 [2019-11-06 22:13:55,224 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-11-06 22:13:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2019-11-06 22:13:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 1362. [2019-11-06 22:13:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2019-11-06 22:13:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2006 transitions. [2019-11-06 22:13:55,396 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2006 transitions. Word has length 57 [2019-11-06 22:13:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:55,396 INFO L462 AbstractCegarLoop]: Abstraction has 1362 states and 2006 transitions. [2019-11-06 22:13:55,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:13:55,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2006 transitions. [2019-11-06 22:13:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 22:13:55,399 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:55,399 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] [2019-11-06 22:13:55,399 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:55,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash -993204644, now seen corresponding path program 1 times [2019-11-06 22:13:55,401 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:55,402 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425131639] [2019-11-06 22:13:55,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:55,652 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:13:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:55,674 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 22:13:55,674 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425131639] [2019-11-06 22:13:55,675 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:55,675 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:13:55,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694928087] [2019-11-06 22:13:55,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:13:55,677 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:55,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:13:55,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:13:55,678 INFO L87 Difference]: Start difference. First operand 1362 states and 2006 transitions. Second operand 10 states. [2019-11-06 22:13:55,876 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-11-06 22:13:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:58,770 INFO L93 Difference]: Finished difference Result 8646 states and 12825 transitions. [2019-11-06 22:13:58,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:13:58,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2019-11-06 22:13:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:58,807 INFO L225 Difference]: With dead ends: 8646 [2019-11-06 22:13:58,808 INFO L226 Difference]: Without dead ends: 7508 [2019-11-06 22:13:58,812 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2019-11-06 22:13:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2019-11-06 22:13:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 1401. [2019-11-06 22:13:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1401 states. [2019-11-06 22:13:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2057 transitions. [2019-11-06 22:13:58,994 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2057 transitions. Word has length 58 [2019-11-06 22:13:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:58,995 INFO L462 AbstractCegarLoop]: Abstraction has 1401 states and 2057 transitions. [2019-11-06 22:13:58,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:13:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2057 transitions. [2019-11-06 22:13:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 22:13:58,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:58,997 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] [2019-11-06 22:13:58,997 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1499714113, now seen corresponding path program 1 times [2019-11-06 22:13:58,998 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:58,998 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456771414] [2019-11-06 22:13:58,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:59,209 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:13:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:59,226 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 22:13:59,227 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456771414] [2019-11-06 22:13:59,228 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:59,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:13:59,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883284740] [2019-11-06 22:13:59,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:13:59,229 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:59,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:13:59,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:13:59,230 INFO L87 Difference]: Start difference. First operand 1401 states and 2057 transitions. Second operand 8 states. [2019-11-06 22:13:59,382 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-11-06 22:14:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:00,661 INFO L93 Difference]: Finished difference Result 5866 states and 8795 transitions. [2019-11-06 22:14:00,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:14:00,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-11-06 22:14:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:00,685 INFO L225 Difference]: With dead ends: 5866 [2019-11-06 22:14:00,685 INFO L226 Difference]: Without dead ends: 5365 [2019-11-06 22:14:00,688 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:14:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2019-11-06 22:14:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 1382. [2019-11-06 22:14:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2019-11-06 22:14:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2033 transitions. [2019-11-06 22:14:00,858 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2033 transitions. Word has length 58 [2019-11-06 22:14:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:00,859 INFO L462 AbstractCegarLoop]: Abstraction has 1382 states and 2033 transitions. [2019-11-06 22:14:00,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:14:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2033 transitions. [2019-11-06 22:14:00,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:14:00,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:00,861 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] [2019-11-06 22:14:00,862 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1924616750, now seen corresponding path program 1 times [2019-11-06 22:14:00,863 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:00,863 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521416627] [2019-11-06 22:14:00,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:01,093 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:14:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:01,110 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 22:14:01,110 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521416627] [2019-11-06 22:14:01,110 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:01,110 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:14:01,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548823328] [2019-11-06 22:14:01,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:14:01,111 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:01,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:14:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:14:01,112 INFO L87 Difference]: Start difference. First operand 1382 states and 2033 transitions. Second operand 8 states. [2019-11-06 22:14:01,279 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-11-06 22:14:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:02,449 INFO L93 Difference]: Finished difference Result 5664 states and 8377 transitions. [2019-11-06 22:14:02,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:14:02,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2019-11-06 22:14:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:02,469 INFO L225 Difference]: With dead ends: 5664 [2019-11-06 22:14:02,470 INFO L226 Difference]: Without dead ends: 4526 [2019-11-06 22:14:02,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:14:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2019-11-06 22:14:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 1363. [2019-11-06 22:14:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2019-11-06 22:14:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2006 transitions. [2019-11-06 22:14:02,636 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2006 transitions. Word has length 59 [2019-11-06 22:14:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:02,636 INFO L462 AbstractCegarLoop]: Abstraction has 1363 states and 2006 transitions. [2019-11-06 22:14:02,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:14:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2006 transitions. [2019-11-06 22:14:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:14:02,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:02,638 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] [2019-11-06 22:14:02,638 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:02,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:02,639 INFO L82 PathProgramCache]: Analyzing trace with hash -157395530, now seen corresponding path program 1 times [2019-11-06 22:14:02,639 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:02,639 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756794708] [2019-11-06 22:14:02,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:02,896 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:14:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:02,913 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 22:14:02,914 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756794708] [2019-11-06 22:14:02,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:02,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:14:02,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444370729] [2019-11-06 22:14:02,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:14:02,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:02,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:14:02,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:02,916 INFO L87 Difference]: Start difference. First operand 1363 states and 2006 transitions. Second operand 10 states. [2019-11-06 22:14:03,063 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-06 22:14:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:05,116 INFO L93 Difference]: Finished difference Result 7072 states and 10472 transitions. [2019-11-06 22:14:05,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:14:05,116 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2019-11-06 22:14:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:05,129 INFO L225 Difference]: With dead ends: 7072 [2019-11-06 22:14:05,129 INFO L226 Difference]: Without dead ends: 5799 [2019-11-06 22:14:05,133 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:14:05,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2019-11-06 22:14:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 3842. [2019-11-06 22:14:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3842 states. [2019-11-06 22:14:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 5718 transitions. [2019-11-06 22:14:05,532 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 5718 transitions. Word has length 59 [2019-11-06 22:14:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:05,533 INFO L462 AbstractCegarLoop]: Abstraction has 3842 states and 5718 transitions. [2019-11-06 22:14:05,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:14:05,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 5718 transitions. [2019-11-06 22:14:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:14:05,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:05,535 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] [2019-11-06 22:14:05,536 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:05,536 INFO L82 PathProgramCache]: Analyzing trace with hash 2127126793, now seen corresponding path program 1 times [2019-11-06 22:14:05,536 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:05,536 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071024919] [2019-11-06 22:14:05,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:05,800 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 22:14:05,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071024919] [2019-11-06 22:14:05,801 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:05,801 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:14:05,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018980392] [2019-11-06 22:14:05,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:14:05,802 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:05,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:14:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:05,807 INFO L87 Difference]: Start difference. First operand 3842 states and 5718 transitions. Second operand 10 states. [2019-11-06 22:14:05,957 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-06 22:14:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:08,945 INFO L93 Difference]: Finished difference Result 20312 states and 30202 transitions. [2019-11-06 22:14:08,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:14:08,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2019-11-06 22:14:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:08,983 INFO L225 Difference]: With dead ends: 20312 [2019-11-06 22:14:08,984 INFO L226 Difference]: Without dead ends: 16960 [2019-11-06 22:14:08,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:14:09,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16960 states. [2019-11-06 22:14:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16960 to 11727. [2019-11-06 22:14:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11727 states. [2019-11-06 22:14:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11727 states to 11727 states and 17416 transitions. [2019-11-06 22:14:10,206 INFO L78 Accepts]: Start accepts. Automaton has 11727 states and 17416 transitions. Word has length 59 [2019-11-06 22:14:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:10,207 INFO L462 AbstractCegarLoop]: Abstraction has 11727 states and 17416 transitions. [2019-11-06 22:14:10,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:14:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11727 states and 17416 transitions. [2019-11-06 22:14:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:14:10,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:10,213 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] [2019-11-06 22:14:10,214 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:10,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1033600256, now seen corresponding path program 1 times [2019-11-06 22:14:10,214 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:10,215 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408228081] [2019-11-06 22:14:10,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:10,514 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:14:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:10,529 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 22:14:10,530 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408228081] [2019-11-06 22:14:10,530 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:10,530 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:10,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179651212] [2019-11-06 22:14:10,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:10,531 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:10,532 INFO L87 Difference]: Start difference. First operand 11727 states and 17416 transitions. Second operand 7 states. [2019-11-06 22:14:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:12,432 INFO L93 Difference]: Finished difference Result 23775 states and 35310 transitions. [2019-11-06 22:14:12,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:12,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2019-11-06 22:14:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:12,459 INFO L225 Difference]: With dead ends: 23775 [2019-11-06 22:14:12,459 INFO L226 Difference]: Without dead ends: 12940 [2019-11-06 22:14:12,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12940 states. [2019-11-06 22:14:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12940 to 8396. [2019-11-06 22:14:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8396 states. [2019-11-06 22:14:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 12355 transitions. [2019-11-06 22:14:13,451 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 12355 transitions. Word has length 60 [2019-11-06 22:14:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:13,451 INFO L462 AbstractCegarLoop]: Abstraction has 8396 states and 12355 transitions. [2019-11-06 22:14:13,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:14:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 12355 transitions. [2019-11-06 22:14:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:14:13,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:13,454 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] [2019-11-06 22:14:13,454 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:13,455 INFO L82 PathProgramCache]: Analyzing trace with hash -976844717, now seen corresponding path program 1 times [2019-11-06 22:14:13,455 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:13,455 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829951384] [2019-11-06 22:14:13,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:13,631 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 22:14:13,632 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829951384] [2019-11-06 22:14:13,632 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:13,632 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:13,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711675609] [2019-11-06 22:14:13,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:13,633 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:13,634 INFO L87 Difference]: Start difference. First operand 8396 states and 12355 transitions. Second operand 7 states. [2019-11-06 22:14:13,810 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-06 22:14:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:16,208 INFO L93 Difference]: Finished difference Result 20131 states and 29816 transitions. [2019-11-06 22:14:16,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:16,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2019-11-06 22:14:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:16,227 INFO L225 Difference]: With dead ends: 20131 [2019-11-06 22:14:16,228 INFO L226 Difference]: Without dead ends: 12331 [2019-11-06 22:14:16,240 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2019-11-06 22:14:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 7655. [2019-11-06 22:14:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7655 states. [2019-11-06 22:14:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7655 states to 7655 states and 11188 transitions. [2019-11-06 22:14:17,278 INFO L78 Accepts]: Start accepts. Automaton has 7655 states and 11188 transitions. Word has length 60 [2019-11-06 22:14:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:17,278 INFO L462 AbstractCegarLoop]: Abstraction has 7655 states and 11188 transitions. [2019-11-06 22:14:17,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:14:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7655 states and 11188 transitions. [2019-11-06 22:14:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:14:17,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:17,280 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] [2019-11-06 22:14:17,280 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:17,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1274910523, now seen corresponding path program 1 times [2019-11-06 22:14:17,281 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:17,281 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820948021] [2019-11-06 22:14:17,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:17,447 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 22:14:17,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820948021] [2019-11-06 22:14:17,448 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:17,448 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:17,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984301693] [2019-11-06 22:14:17,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:14:17,449 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:17,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:14:17,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:17,450 INFO L87 Difference]: Start difference. First operand 7655 states and 11188 transitions. Second operand 6 states. [2019-11-06 22:14:17,587 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-06 22:14:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:19,677 INFO L93 Difference]: Finished difference Result 18506 states and 26953 transitions. [2019-11-06 22:14:19,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:19,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2019-11-06 22:14:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:19,692 INFO L225 Difference]: With dead ends: 18506 [2019-11-06 22:14:19,692 INFO L226 Difference]: Without dead ends: 10932 [2019-11-06 22:14:19,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:14:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2019-11-06 22:14:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 7655. [2019-11-06 22:14:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7655 states. [2019-11-06 22:14:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7655 states to 7655 states and 11084 transitions. [2019-11-06 22:14:21,342 INFO L78 Accepts]: Start accepts. Automaton has 7655 states and 11084 transitions. Word has length 60 [2019-11-06 22:14:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:21,342 INFO L462 AbstractCegarLoop]: Abstraction has 7655 states and 11084 transitions. [2019-11-06 22:14:21,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:14:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 7655 states and 11084 transitions. [2019-11-06 22:14:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 22:14:21,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:21,344 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] [2019-11-06 22:14:21,345 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1286220475, now seen corresponding path program 1 times [2019-11-06 22:14:21,346 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:21,346 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194968959] [2019-11-06 22:14:21,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:21,532 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-11-06 22:14:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:21,554 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 22:14:21,554 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194968959] [2019-11-06 22:14:21,555 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:21,555 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:21,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293894812] [2019-11-06 22:14:21,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:14:21,556 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:14:21,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:21,557 INFO L87 Difference]: Start difference. First operand 7655 states and 11084 transitions. Second operand 6 states. [2019-11-06 22:14:21,713 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 116