/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.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:12:35,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:12:35,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:12:35,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:12:35,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:12:35,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:12:35,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:12:35,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:12:35,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:12:35,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:12:35,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:12:35,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:12:35,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:12:35,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:12:35,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:12:35,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:12:35,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:12:35,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:12:35,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:12:35,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:12:35,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:12:35,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:12:35,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:12:35,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:12:35,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:12:35,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:12:35,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:12:35,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:12:35,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:12:35,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:12:35,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:12:35,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:12:35,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:12:35,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:12:35,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:12:35,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:12:35,590 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 22:12:35,617 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:12:35,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:12:35,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:12:35,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:12:35,619 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:12:35,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:12:35,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:12:35,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:12:35,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:12:35,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:12:35,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:12:35,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:12:35,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:12:35,621 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:12:35,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:12:35,621 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:12:35,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:12:35,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:12:35,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:12:35,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:12:35,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:12:35,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:12:35,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:12:35,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:12:35,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:12:35,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:12:35,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:12:35,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:12:35,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:12:35,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:12:35,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:12:35,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:12:35,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:12:35,927 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:12:35,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:12:36,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92e90c29/526be54ce220415fb80b85c9c7c1d213/FLAGe86e7231b [2019-11-06 22:12:36,559 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:12:36,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:12:36,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92e90c29/526be54ce220415fb80b85c9c7c1d213/FLAGe86e7231b [2019-11-06 22:12:36,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92e90c29/526be54ce220415fb80b85c9c7c1d213 [2019-11-06 22:12:36,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:12:36,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:12:36,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:12:36,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:12:36,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:12:36,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:36" (1/1) ... [2019-11-06 22:12:36,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e6077e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:36, skipping insertion in model container [2019-11-06 22:12:36,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:36" (1/1) ... [2019-11-06 22:12:36,867 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:12:36,939 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:12:37,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:12:37,400 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:12:37,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:12:37,561 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:12:37,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37 WrapperNode [2019-11-06 22:12:37,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:12:37,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:12:37,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:12:37,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:12:37,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (1/1) ... [2019-11-06 22:12:37,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (1/1) ... [2019-11-06 22:12:37,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (1/1) ... [2019-11-06 22:12:37,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (1/1) ... [2019-11-06 22:12:37,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (1/1) ... [2019-11-06 22:12:37,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (1/1) ... [2019-11-06 22:12:37,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (1/1) ... [2019-11-06 22:12:37,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:12:37,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:12:37,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:12:37,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:12:37,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (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 22:12:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:12:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:12:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:12:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:12:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:12:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:12:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:12:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:12:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:12:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:12:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:12:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:12:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:12:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:12:38,905 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:12:38,906 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:12:38,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:38 BoogieIcfgContainer [2019-11-06 22:12:38,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:12:38,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:12:38,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:12:38,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:12:38,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:36" (1/3) ... [2019-11-06 22:12:38,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14eff348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:38, skipping insertion in model container [2019-11-06 22:12:38,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:37" (2/3) ... [2019-11-06 22:12:38,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14eff348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:38, skipping insertion in model container [2019-11-06 22:12:38,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:38" (3/3) ... [2019-11-06 22:12:38,916 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-11-06 22:12:38,926 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:12:38,934 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:12:38,947 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:12:38,975 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:12:38,975 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:12:38,975 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:12:38,975 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:12:38,976 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:12:38,976 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:12:38,976 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:12:38,976 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:12:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states. [2019-11-06 22:12:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-06 22:12:39,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:39,028 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 22:12:39,031 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash 343036633, now seen corresponding path program 1 times [2019-11-06 22:12:39,047 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:39,047 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134650902] [2019-11-06 22:12:39,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:39,960 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:40,027 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 22:12:40,028 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134650902] [2019-11-06 22:12:40,029 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:40,029 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:40,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443105228] [2019-11-06 22:12:40,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:40,041 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:40,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:40,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:40,059 INFO L87 Difference]: Start difference. First operand 223 states. Second operand 5 states. [2019-11-06 22:12:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:42,032 INFO L93 Difference]: Finished difference Result 636 states and 1118 transitions. [2019-11-06 22:12:42,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:12:42,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-11-06 22:12:42,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:42,059 INFO L225 Difference]: With dead ends: 636 [2019-11-06 22:12:42,060 INFO L226 Difference]: Without dead ends: 418 [2019-11-06 22:12:42,065 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 22:12:42,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-11-06 22:12:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 416. [2019-11-06 22:12:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-11-06 22:12:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 609 transitions. [2019-11-06 22:12:42,150 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 609 transitions. Word has length 98 [2019-11-06 22:12:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:42,151 INFO L462 AbstractCegarLoop]: Abstraction has 416 states and 609 transitions. [2019-11-06 22:12:42,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 609 transitions. [2019-11-06 22:12:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-06 22:12:42,156 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:42,157 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] [2019-11-06 22:12:42,157 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:42,158 INFO L82 PathProgramCache]: Analyzing trace with hash -936762471, now seen corresponding path program 1 times [2019-11-06 22:12:42,158 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:42,158 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669303790] [2019-11-06 22:12:42,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:42,541 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:42,564 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 22:12:42,564 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669303790] [2019-11-06 22:12:42,565 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:42,565 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:42,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406978708] [2019-11-06 22:12:42,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:42,567 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:42,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:42,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:42,568 INFO L87 Difference]: Start difference. First operand 416 states and 609 transitions. Second operand 4 states. [2019-11-06 22:12:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:44,165 INFO L93 Difference]: Finished difference Result 1202 states and 1757 transitions. [2019-11-06 22:12:44,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:44,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2019-11-06 22:12:44,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:44,174 INFO L225 Difference]: With dead ends: 1202 [2019-11-06 22:12:44,174 INFO L226 Difference]: Without dead ends: 818 [2019-11-06 22:12:44,180 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 22:12:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-11-06 22:12:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 418. [2019-11-06 22:12:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-11-06 22:12:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 611 transitions. [2019-11-06 22:12:44,235 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 611 transitions. Word has length 99 [2019-11-06 22:12:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:44,236 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 611 transitions. [2019-11-06 22:12:44,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 611 transitions. [2019-11-06 22:12:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-06 22:12:44,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:44,239 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 22:12:44,239 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:44,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:44,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1773874167, now seen corresponding path program 1 times [2019-11-06 22:12:44,240 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:44,240 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783511509] [2019-11-06 22:12:44,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:44,612 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:44,646 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 22:12:44,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783511509] [2019-11-06 22:12:44,647 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:44,647 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:44,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953166128] [2019-11-06 22:12:44,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:44,648 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:44,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:44,649 INFO L87 Difference]: Start difference. First operand 418 states and 611 transitions. Second operand 4 states. [2019-11-06 22:12:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:46,399 INFO L93 Difference]: Finished difference Result 1038 states and 1538 transitions. [2019-11-06 22:12:46,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:46,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2019-11-06 22:12:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:46,406 INFO L225 Difference]: With dead ends: 1038 [2019-11-06 22:12:46,407 INFO L226 Difference]: Without dead ends: 802 [2019-11-06 22:12:46,408 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 22:12:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2019-11-06 22:12:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 800. [2019-11-06 22:12:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2019-11-06 22:12:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1163 transitions. [2019-11-06 22:12:46,457 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1163 transitions. Word has length 100 [2019-11-06 22:12:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:46,460 INFO L462 AbstractCegarLoop]: Abstraction has 800 states and 1163 transitions. [2019-11-06 22:12:46,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1163 transitions. [2019-11-06 22:12:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-06 22:12:46,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:46,474 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 22:12:46,474 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:46,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:46,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1816624602, now seen corresponding path program 1 times [2019-11-06 22:12:46,475 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:46,475 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962779581] [2019-11-06 22:12:46,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:46,860 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:46,892 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 22:12:46,893 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962779581] [2019-11-06 22:12:46,893 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:46,893 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:46,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875703849] [2019-11-06 22:12:46,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:46,894 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:46,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:46,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:46,896 INFO L87 Difference]: Start difference. First operand 800 states and 1163 transitions. Second operand 5 states. [2019-11-06 22:12:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:47,976 INFO L93 Difference]: Finished difference Result 1239 states and 1819 transitions. [2019-11-06 22:12:47,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:47,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-11-06 22:12:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:47,981 INFO L225 Difference]: With dead ends: 1239 [2019-11-06 22:12:47,981 INFO L226 Difference]: Without dead ends: 611 [2019-11-06 22:12:47,982 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 22:12:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-11-06 22:12:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2019-11-06 22:12:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-11-06 22:12:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 883 transitions. [2019-11-06 22:12:48,014 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 883 transitions. Word has length 100 [2019-11-06 22:12:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:48,015 INFO L462 AbstractCegarLoop]: Abstraction has 611 states and 883 transitions. [2019-11-06 22:12:48,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 883 transitions. [2019-11-06 22:12:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-06 22:12:48,017 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:48,017 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 22:12:48,018 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:48,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1713248280, now seen corresponding path program 1 times [2019-11-06 22:12:48,018 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:48,019 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518249236] [2019-11-06 22:12:48,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:48,413 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:48,447 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 22:12:48,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518249236] [2019-11-06 22:12:48,448 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:48,448 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:48,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660758600] [2019-11-06 22:12:48,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:48,449 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:48,450 INFO L87 Difference]: Start difference. First operand 611 states and 883 transitions. Second operand 5 states. [2019-11-06 22:12:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:49,766 INFO L93 Difference]: Finished difference Result 1485 states and 2148 transitions. [2019-11-06 22:12:49,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:49,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2019-11-06 22:12:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:49,772 INFO L225 Difference]: With dead ends: 1485 [2019-11-06 22:12:49,773 INFO L226 Difference]: Without dead ends: 897 [2019-11-06 22:12:49,775 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 22:12:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2019-11-06 22:12:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 895. [2019-11-06 22:12:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2019-11-06 22:12:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1282 transitions. [2019-11-06 22:12:49,855 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1282 transitions. Word has length 102 [2019-11-06 22:12:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:49,858 INFO L462 AbstractCegarLoop]: Abstraction has 895 states and 1282 transitions. [2019-11-06 22:12:49,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1282 transitions. [2019-11-06 22:12:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:12:49,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:49,862 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 22:12:49,862 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:49,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:49,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1610605002, now seen corresponding path program 1 times [2019-11-06 22:12:49,863 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:49,864 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410278681] [2019-11-06 22:12:49,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:50,278 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:50,398 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 22:12:50,398 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410278681] [2019-11-06 22:12:50,400 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:50,401 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:50,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056492652] [2019-11-06 22:12:50,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:50,402 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:50,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:50,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:50,403 INFO L87 Difference]: Start difference. First operand 895 states and 1282 transitions. Second operand 4 states. [2019-11-06 22:12:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:52,379 INFO L93 Difference]: Finished difference Result 2174 states and 3182 transitions. [2019-11-06 22:12:52,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:52,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-11-06 22:12:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:52,392 INFO L225 Difference]: With dead ends: 2174 [2019-11-06 22:12:52,393 INFO L226 Difference]: Without dead ends: 1607 [2019-11-06 22:12:52,396 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2019-11-06 22:12:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1605. [2019-11-06 22:12:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2019-11-06 22:12:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2301 transitions. [2019-11-06 22:12:52,563 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2301 transitions. Word has length 104 [2019-11-06 22:12:52,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:52,564 INFO L462 AbstractCegarLoop]: Abstraction has 1605 states and 2301 transitions. [2019-11-06 22:12:52,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2301 transitions. [2019-11-06 22:12:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:12:52,570 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:52,571 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 22:12:52,571 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:52,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:52,572 INFO L82 PathProgramCache]: Analyzing trace with hash -817857369, now seen corresponding path program 1 times [2019-11-06 22:12:52,572 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:52,572 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456959447] [2019-11-06 22:12:52,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:53,000 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:53,028 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 22:12:53,028 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456959447] [2019-11-06 22:12:53,029 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:53,029 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:53,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301086442] [2019-11-06 22:12:53,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:53,030 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:53,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:53,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:53,031 INFO L87 Difference]: Start difference. First operand 1605 states and 2301 transitions. Second operand 5 states. [2019-11-06 22:12:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:53,991 INFO L93 Difference]: Finished difference Result 2391 states and 3456 transitions. [2019-11-06 22:12:53,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:53,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2019-11-06 22:12:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:54,000 INFO L225 Difference]: With dead ends: 2391 [2019-11-06 22:12:54,001 INFO L226 Difference]: Without dead ends: 1319 [2019-11-06 22:12:54,004 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 22:12:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2019-11-06 22:12:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2019-11-06 22:12:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2019-11-06 22:12:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1881 transitions. [2019-11-06 22:12:54,087 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1881 transitions. Word has length 104 [2019-11-06 22:12:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:54,087 INFO L462 AbstractCegarLoop]: Abstraction has 1319 states and 1881 transitions. [2019-11-06 22:12:54,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1881 transitions. [2019-11-06 22:12:54,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-06 22:12:54,090 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:54,090 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 22:12:54,091 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:54,091 INFO L82 PathProgramCache]: Analyzing trace with hash 669169858, now seen corresponding path program 1 times [2019-11-06 22:12:54,092 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:54,093 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041362556] [2019-11-06 22:12:54,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:54,370 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:54,390 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 22:12:54,390 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041362556] [2019-11-06 22:12:54,390 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:54,391 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:54,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928908202] [2019-11-06 22:12:54,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:54,392 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:54,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:54,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:54,393 INFO L87 Difference]: Start difference. First operand 1319 states and 1881 transitions. Second operand 4 states. [2019-11-06 22:12:54,661 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-11-06 22:12:55,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:55,674 INFO L93 Difference]: Finished difference Result 3197 states and 4694 transitions. [2019-11-06 22:12:55,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:55,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-11-06 22:12:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:55,687 INFO L225 Difference]: With dead ends: 3197 [2019-11-06 22:12:55,687 INFO L226 Difference]: Without dead ends: 2376 [2019-11-06 22:12:55,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-11-06 22:12:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2374. [2019-11-06 22:12:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2019-11-06 22:12:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3419 transitions. [2019-11-06 22:12:55,829 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3419 transitions. Word has length 106 [2019-11-06 22:12:55,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:55,829 INFO L462 AbstractCegarLoop]: Abstraction has 2374 states and 3419 transitions. [2019-11-06 22:12:55,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:12:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3419 transitions. [2019-11-06 22:12:55,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-06 22:12:55,834 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:55,834 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 22:12:55,835 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:55,835 INFO L82 PathProgramCache]: Analyzing trace with hash -53512537, now seen corresponding path program 1 times [2019-11-06 22:12:55,836 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:55,836 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894927921] [2019-11-06 22:12:55,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:56,235 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:56,266 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 22:12:56,266 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894927921] [2019-11-06 22:12:56,266 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:56,267 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:12:56,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7004098] [2019-11-06 22:12:56,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:12:56,267 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:56,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:12:56,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:12:56,268 INFO L87 Difference]: Start difference. First operand 2374 states and 3419 transitions. Second operand 5 states. [2019-11-06 22:12:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:57,790 INFO L93 Difference]: Finished difference Result 6864 states and 9875 transitions. [2019-11-06 22:12:57,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:12:57,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2019-11-06 22:12:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:57,812 INFO L225 Difference]: With dead ends: 6864 [2019-11-06 22:12:57,813 INFO L226 Difference]: Without dead ends: 4533 [2019-11-06 22:12:57,817 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 22:12:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2019-11-06 22:12:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4531. [2019-11-06 22:12:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4531 states. [2019-11-06 22:12:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 6454 transitions. [2019-11-06 22:12:58,083 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 6454 transitions. Word has length 106 [2019-11-06 22:12:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:12:58,083 INFO L462 AbstractCegarLoop]: Abstraction has 4531 states and 6454 transitions. [2019-11-06 22:12:58,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:12:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 6454 transitions. [2019-11-06 22:12:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:12:58,092 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:12:58,093 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] [2019-11-06 22:12:58,093 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:12:58,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:12:58,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2125527721, now seen corresponding path program 1 times [2019-11-06 22:12:58,096 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:12:58,101 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582787098] [2019-11-06 22:12:58,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:12:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:58,332 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:12:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:12:58,355 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 22:12:58,355 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582787098] [2019-11-06 22:12:58,356 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:12:58,356 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:12:58,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631345038] [2019-11-06 22:12:58,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:12:58,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:12:58,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:12:58,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:12:58,358 INFO L87 Difference]: Start difference. First operand 4531 states and 6454 transitions. Second operand 4 states. [2019-11-06 22:12:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:12:59,779 INFO L93 Difference]: Finished difference Result 13393 states and 19105 transitions. [2019-11-06 22:12:59,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:12:59,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-11-06 22:12:59,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:12:59,816 INFO L225 Difference]: With dead ends: 13393 [2019-11-06 22:12:59,816 INFO L226 Difference]: Without dead ends: 8971 [2019-11-06 22:12:59,826 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 22:12:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2019-11-06 22:13:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 4537. [2019-11-06 22:13:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4537 states. [2019-11-06 22:13:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6460 transitions. [2019-11-06 22:13:00,100 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6460 transitions. Word has length 107 [2019-11-06 22:13:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:00,101 INFO L462 AbstractCegarLoop]: Abstraction has 4537 states and 6460 transitions. [2019-11-06 22:13:00,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6460 transitions. [2019-11-06 22:13:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:13:00,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:00,108 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 22:13:00,108 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:00,109 INFO L82 PathProgramCache]: Analyzing trace with hash -871367960, now seen corresponding path program 1 times [2019-11-06 22:13:00,109 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:00,109 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368857073] [2019-11-06 22:13:00,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:00,414 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:13:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:00,440 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 22:13:00,440 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368857073] [2019-11-06 22:13:00,440 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:00,440 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:00,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753321111] [2019-11-06 22:13:00,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:00,441 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:00,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:00,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:00,442 INFO L87 Difference]: Start difference. First operand 4537 states and 6460 transitions. Second operand 5 states. [2019-11-06 22:13:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:01,448 INFO L93 Difference]: Finished difference Result 9032 states and 12864 transitions. [2019-11-06 22:13:01,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:01,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-11-06 22:13:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:01,466 INFO L225 Difference]: With dead ends: 9032 [2019-11-06 22:13:01,466 INFO L226 Difference]: Without dead ends: 4531 [2019-11-06 22:13:01,476 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 22:13:01,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2019-11-06 22:13:01,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 4531. [2019-11-06 22:13:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4531 states. [2019-11-06 22:13:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 6448 transitions. [2019-11-06 22:13:01,679 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 6448 transitions. Word has length 108 [2019-11-06 22:13:01,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:01,679 INFO L462 AbstractCegarLoop]: Abstraction has 4531 states and 6448 transitions. [2019-11-06 22:13:01,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 6448 transitions. [2019-11-06 22:13:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:13:01,686 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:01,686 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 22:13:01,686 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:01,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1746692037, now seen corresponding path program 1 times [2019-11-06 22:13:01,687 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:01,687 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512021498] [2019-11-06 22:13:01,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:02,008 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:13:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:02,059 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512021498] [2019-11-06 22:13:02,060 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:02,060 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:02,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6303870] [2019-11-06 22:13:02,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:02,061 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:02,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:02,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:02,061 INFO L87 Difference]: Start difference. First operand 4531 states and 6448 transitions. Second operand 4 states. [2019-11-06 22:13:03,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:03,853 INFO L93 Difference]: Finished difference Result 10307 states and 14773 transitions. [2019-11-06 22:13:03,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:13:03,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-11-06 22:13:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:03,868 INFO L225 Difference]: With dead ends: 10307 [2019-11-06 22:13:03,869 INFO L226 Difference]: Without dead ends: 6717 [2019-11-06 22:13:03,876 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 22:13:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2019-11-06 22:13:04,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 6715. [2019-11-06 22:13:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6715 states. [2019-11-06 22:13:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 9383 transitions. [2019-11-06 22:13:04,191 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 9383 transitions. Word has length 108 [2019-11-06 22:13:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:04,191 INFO L462 AbstractCegarLoop]: Abstraction has 6715 states and 9383 transitions. [2019-11-06 22:13:04,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 9383 transitions. [2019-11-06 22:13:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-06 22:13:04,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:04,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:04,203 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:04,203 INFO L82 PathProgramCache]: Analyzing trace with hash -848505304, now seen corresponding path program 1 times [2019-11-06 22:13:04,203 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:04,204 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446185495] [2019-11-06 22:13:04,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:04,523 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:13:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:04,561 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 22:13:04,561 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446185495] [2019-11-06 22:13:04,561 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:04,562 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:04,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889090721] [2019-11-06 22:13:04,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:04,564 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:04,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:04,564 INFO L87 Difference]: Start difference. First operand 6715 states and 9383 transitions. Second operand 5 states. [2019-11-06 22:13:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:05,614 INFO L93 Difference]: Finished difference Result 12456 states and 17427 transitions. [2019-11-06 22:13:05,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:05,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-11-06 22:13:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:05,626 INFO L225 Difference]: With dead ends: 12456 [2019-11-06 22:13:05,626 INFO L226 Difference]: Without dead ends: 6092 [2019-11-06 22:13:05,635 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 22:13:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6092 states. [2019-11-06 22:13:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6092 to 6023. [2019-11-06 22:13:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6023 states. [2019-11-06 22:13:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 8366 transitions. [2019-11-06 22:13:05,939 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 8366 transitions. Word has length 110 [2019-11-06 22:13:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:05,939 INFO L462 AbstractCegarLoop]: Abstraction has 6023 states and 8366 transitions. [2019-11-06 22:13:05,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:13:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 8366 transitions. [2019-11-06 22:13:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:13:05,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:05,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:05,946 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:05,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1621946400, now seen corresponding path program 1 times [2019-11-06 22:13:05,947 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:05,947 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553369886] [2019-11-06 22:13:05,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:06,180 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:13:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:06,201 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 22:13:06,201 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553369886] [2019-11-06 22:13:06,201 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:06,201 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:13:06,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904458067] [2019-11-06 22:13:06,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:13:06,202 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:06,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:13:06,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:13:06,203 INFO L87 Difference]: Start difference. First operand 6023 states and 8366 transitions. Second operand 4 states. [2019-11-06 22:13:06,410 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-11-06 22:13:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:07,673 INFO L93 Difference]: Finished difference Result 14841 states and 21156 transitions. [2019-11-06 22:13:07,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:13:07,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-11-06 22:13:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:07,695 INFO L225 Difference]: With dead ends: 14841 [2019-11-06 22:13:07,695 INFO L226 Difference]: Without dead ends: 10994 [2019-11-06 22:13:07,702 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 22:13:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2019-11-06 22:13:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 10992. [2019-11-06 22:13:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10992 states. [2019-11-06 22:13:08,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10992 states to 10992 states and 15347 transitions. [2019-11-06 22:13:08,261 INFO L78 Accepts]: Start accepts. Automaton has 10992 states and 15347 transitions. Word has length 112 [2019-11-06 22:13:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:08,261 INFO L462 AbstractCegarLoop]: Abstraction has 10992 states and 15347 transitions. [2019-11-06 22:13:08,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:13:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 10992 states and 15347 transitions. [2019-11-06 22:13:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:13:08,268 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:08,268 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:08,269 INFO L410 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:08,269 INFO L82 PathProgramCache]: Analyzing trace with hash 900773541, now seen corresponding path program 1 times [2019-11-06 22:13:08,269 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:08,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913771632] [2019-11-06 22:13:08,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:08,595 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 22:13:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:08,750 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 22:13:08,750 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913771632] [2019-11-06 22:13:08,750 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:08,751 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:08,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231974850] [2019-11-06 22:13:08,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:13:08,751 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:08,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:13:08,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:13:08,752 INFO L87 Difference]: Start difference. First operand 10992 states and 15347 transitions. Second operand 5 states.