/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:19:02,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:19:02,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:19:02,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:19:02,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:19:02,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:19:02,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:19:02,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:19:02,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:19:02,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:19:02,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:19:02,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:19:02,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:19:02,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:19:02,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:19:02,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:19:02,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:19:02,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:19:02,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:19:02,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:19:02,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:19:02,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:19:02,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:19:02,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:19:02,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:19:02,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:19:02,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:19:02,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:19:02,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:19:02,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 12:19:02,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:19:02,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:19:02,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:19:02,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:19:02,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:19:02,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:19:02,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:19:02,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:19:02,577 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:19:02,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:19:02,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:19:02,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:19:02,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:19:02,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:19:02,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:19:02,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:19:02,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:19:02,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:19:02,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:19:02,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:19:02,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:19:02,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:19:02,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:19:02,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:19:02,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:19:02,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:19:02,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:19:02,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:19:02,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:19:02,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:19:02,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:19:02,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:19:02,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:19:02,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:19:02,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:19:02,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:19:02,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:19:02,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:19:02,943 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:19:02,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-08-18 12:19:03,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2beb1860/052a0dd945344dd186bace50175edbbf/FLAGf93e48a0f [2020-08-18 12:19:03,675 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:19:03,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-08-18 12:19:03,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2beb1860/052a0dd945344dd186bace50175edbbf/FLAGf93e48a0f [2020-08-18 12:19:03,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2beb1860/052a0dd945344dd186bace50175edbbf [2020-08-18 12:19:03,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:19:03,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:19:03,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:19:03,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:19:03,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:19:03,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:19:03" (1/1) ... [2020-08-18 12:19:03,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191ab6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:03, skipping insertion in model container [2020-08-18 12:19:03,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:19:03" (1/1) ... [2020-08-18 12:19:03,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:19:04,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:19:05,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:19:05,103 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:19:05,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:19:05,555 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:19:05,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05 WrapperNode [2020-08-18 12:19:05,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:19:05,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:19:05,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:19:05,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:19:05,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... [2020-08-18 12:19:05,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... [2020-08-18 12:19:05,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... [2020-08-18 12:19:05,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... [2020-08-18 12:19:05,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... [2020-08-18 12:19:05,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... [2020-08-18 12:19:05,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... [2020-08-18 12:19:05,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:19:05,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:19:05,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:19:05,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:19:05,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 12:19:05,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:19:05,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:19:05,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:19:05,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:19:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:19:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 12:19:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 12:19:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 12:19:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:19:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:19:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 12:19:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 12:19:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 12:19:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 12:19:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 12:19:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-18 12:19:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 12:19:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 12:19:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:19:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:19:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:19:08,397 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:19:08,398 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:19:08,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:19:08 BoogieIcfgContainer [2020-08-18 12:19:08,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:19:08,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:19:08,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:19:08,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:19:08,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:19:03" (1/3) ... [2020-08-18 12:19:08,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cc0409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:19:08, skipping insertion in model container [2020-08-18 12:19:08,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:19:05" (2/3) ... [2020-08-18 12:19:08,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cc0409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:19:08, skipping insertion in model container [2020-08-18 12:19:08,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:19:08" (3/3) ... [2020-08-18 12:19:08,417 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-08-18 12:19:08,429 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:19:08,439 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:19:08,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:19:08,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:19:08,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:19:08,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:19:08,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:19:08,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:19:08,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:19:08,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:19:08,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:19:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states. [2020-08-18 12:19:08,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-18 12:19:08,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:08,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:19:08,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:08,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2046950044, now seen corresponding path program 1 times [2020-08-18 12:19:08,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:08,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877424124] [2020-08-18 12:19:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:11,029 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-18 12:19:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:11,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877424124] [2020-08-18 12:19:11,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:11,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:19:11,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58831928] [2020-08-18 12:19:11,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:19:11,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:11,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:19:11,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:19:11,340 INFO L87 Difference]: Start difference. First operand 795 states. Second operand 5 states. [2020-08-18 12:19:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:19,673 INFO L93 Difference]: Finished difference Result 2333 states and 4147 transitions. [2020-08-18 12:19:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:19:19,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-08-18 12:19:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:19,709 INFO L225 Difference]: With dead ends: 2333 [2020-08-18 12:19:19,709 INFO L226 Difference]: Without dead ends: 1545 [2020-08-18 12:19:19,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:19:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-08-18 12:19:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1543. [2020-08-18 12:19:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-08-18 12:19:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2401 transitions. [2020-08-18 12:19:19,879 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2401 transitions. Word has length 324 [2020-08-18 12:19:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:19,880 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 2401 transitions. [2020-08-18 12:19:19,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:19:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2401 transitions. [2020-08-18 12:19:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-18 12:19:19,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:19,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:19:19,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:19:19,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:19,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1516440759, now seen corresponding path program 1 times [2020-08-18 12:19:19,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:19,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828102774] [2020-08-18 12:19:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:20,729 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-18 12:19:20,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:21,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828102774] [2020-08-18 12:19:21,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:21,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:19:21,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141848350] [2020-08-18 12:19:21,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:19:21,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:21,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:19:21,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:21,134 INFO L87 Difference]: Start difference. First operand 1543 states and 2401 transitions. Second operand 4 states. [2020-08-18 12:19:29,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:29,718 INFO L93 Difference]: Finished difference Result 4438 states and 6875 transitions. [2020-08-18 12:19:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:29,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-18 12:19:29,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:29,736 INFO L225 Difference]: With dead ends: 4438 [2020-08-18 12:19:29,737 INFO L226 Difference]: Without dead ends: 3024 [2020-08-18 12:19:29,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2020-08-18 12:19:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2020-08-18 12:19:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3022 states. [2020-08-18 12:19:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4679 transitions. [2020-08-18 12:19:29,861 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4679 transitions. Word has length 326 [2020-08-18 12:19:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:29,862 INFO L479 AbstractCegarLoop]: Abstraction has 3022 states and 4679 transitions. [2020-08-18 12:19:29,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4679 transitions. [2020-08-18 12:19:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-18 12:19:29,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:29,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:19:29,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:19:29,873 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -545695684, now seen corresponding path program 1 times [2020-08-18 12:19:29,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:29,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700546098] [2020-08-18 12:19:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:30,435 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-18 12:19:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:30,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700546098] [2020-08-18 12:19:30,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:30,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:19:30,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254198967] [2020-08-18 12:19:30,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:19:30,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:19:30,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:30,586 INFO L87 Difference]: Start difference. First operand 3022 states and 4679 transitions. Second operand 4 states. [2020-08-18 12:19:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:38,701 INFO L93 Difference]: Finished difference Result 8991 states and 13913 transitions. [2020-08-18 12:19:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:38,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-18 12:19:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:38,731 INFO L225 Difference]: With dead ends: 8991 [2020-08-18 12:19:38,732 INFO L226 Difference]: Without dead ends: 6011 [2020-08-18 12:19:38,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2020-08-18 12:19:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3041. [2020-08-18 12:19:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3041 states. [2020-08-18 12:19:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4707 transitions. [2020-08-18 12:19:38,885 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4707 transitions. Word has length 326 [2020-08-18 12:19:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:38,885 INFO L479 AbstractCegarLoop]: Abstraction has 3041 states and 4707 transitions. [2020-08-18 12:19:38,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4707 transitions. [2020-08-18 12:19:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-18 12:19:38,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:38,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:19:38,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:19:38,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:38,896 INFO L82 PathProgramCache]: Analyzing trace with hash -441096328, now seen corresponding path program 1 times [2020-08-18 12:19:38,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:38,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481146055] [2020-08-18 12:19:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:39,449 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-18 12:19:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:39,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481146055] [2020-08-18 12:19:39,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:39,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:19:39,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813369974] [2020-08-18 12:19:39,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:19:39,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:39,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:19:39,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:39,573 INFO L87 Difference]: Start difference. First operand 3041 states and 4707 transitions. Second operand 4 states. [2020-08-18 12:19:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:47,523 INFO L93 Difference]: Finished difference Result 9010 states and 13934 transitions. [2020-08-18 12:19:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:47,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-08-18 12:19:47,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:47,551 INFO L225 Difference]: With dead ends: 9010 [2020-08-18 12:19:47,552 INFO L226 Difference]: Without dead ends: 6029 [2020-08-18 12:19:47,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2020-08-18 12:19:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 3059. [2020-08-18 12:19:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3059 states. [2020-08-18 12:19:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4728 transitions. [2020-08-18 12:19:47,724 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4728 transitions. Word has length 327 [2020-08-18 12:19:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:47,725 INFO L479 AbstractCegarLoop]: Abstraction has 3059 states and 4728 transitions. [2020-08-18 12:19:47,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4728 transitions. [2020-08-18 12:19:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-08-18 12:19:47,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:47,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:19:47,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:19:47,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:47,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:47,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1648776142, now seen corresponding path program 1 times [2020-08-18 12:19:47,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:47,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520647781] [2020-08-18 12:19:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:48,452 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-18 12:19:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:48,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520647781] [2020-08-18 12:19:48,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:48,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:19:48,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536352676] [2020-08-18 12:19:48,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:19:48,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:48,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:19:48,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:48,612 INFO L87 Difference]: Start difference. First operand 3059 states and 4728 transitions. Second operand 4 states. [2020-08-18 12:19:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:56,895 INFO L93 Difference]: Finished difference Result 8718 states and 13409 transitions. [2020-08-18 12:19:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:56,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-08-18 12:19:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:56,925 INFO L225 Difference]: With dead ends: 8718 [2020-08-18 12:19:56,926 INFO L226 Difference]: Without dead ends: 5904 [2020-08-18 12:19:56,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2020-08-18 12:19:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 5902. [2020-08-18 12:19:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5902 states. [2020-08-18 12:19:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 9056 transitions. [2020-08-18 12:19:57,239 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 9056 transitions. Word has length 328 [2020-08-18 12:19:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:57,241 INFO L479 AbstractCegarLoop]: Abstraction has 5902 states and 9056 transitions. [2020-08-18 12:19:57,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 9056 transitions. [2020-08-18 12:19:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-08-18 12:19:57,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:57,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:19:57,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:19:57,257 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:57,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:57,258 INFO L82 PathProgramCache]: Analyzing trace with hash 157244175, now seen corresponding path program 1 times [2020-08-18 12:19:57,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:57,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214591144] [2020-08-18 12:19:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:58,143 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-18 12:19:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:58,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214591144] [2020-08-18 12:19:58,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:58,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:19:58,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615556145] [2020-08-18 12:19:58,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:19:58,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:58,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:19:58,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:19:58,338 INFO L87 Difference]: Start difference. First operand 5902 states and 9056 transitions. Second operand 5 states. [2020-08-18 12:20:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:20:04,495 INFO L93 Difference]: Finished difference Result 13189 states and 20201 transitions. [2020-08-18 12:20:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:20:04,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-08-18 12:20:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:20:04,522 INFO L225 Difference]: With dead ends: 13189 [2020-08-18 12:20:04,522 INFO L226 Difference]: Without dead ends: 6775 [2020-08-18 12:20:04,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:20:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2020-08-18 12:20:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6773. [2020-08-18 12:20:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6773 states. [2020-08-18 12:20:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 10350 transitions. [2020-08-18 12:20:04,843 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 10350 transitions. Word has length 328 [2020-08-18 12:20:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:20:04,844 INFO L479 AbstractCegarLoop]: Abstraction has 6773 states and 10350 transitions. [2020-08-18 12:20:04,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:20:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 10350 transitions. [2020-08-18 12:20:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-18 12:20:04,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:20:04,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:20:04,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:20:04,869 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:20:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:20:04,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1619567406, now seen corresponding path program 1 times [2020-08-18 12:20:04,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:20:04,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871743150] [2020-08-18 12:20:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY