/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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:12:26,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:12:26,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:12:26,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:12:26,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:12:26,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:12:26,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:12:26,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:12:26,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:12:26,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:12:26,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:12:26,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:12:26,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:12:26,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:12:26,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:12:26,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:12:26,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:12:26,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:12:26,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:12:26,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:12:26,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:12:26,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:12:26,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:12:26,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:12:26,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 17:12:26,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:12:26,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:12:26,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:12:26,633 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 [2020-08-22 17:12:26,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:12:26,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:12:26,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 17:12:26,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 17:12:26,657 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 17:12:26,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:12:26,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:12:26,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:12:26,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:12:26,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:12:26,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:12:26,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:12:26,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:12:26,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:12:26,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:12:26,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:12:26,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:12:26,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:12:26,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 17:12:26,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:12:26,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:12:26,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:12:26,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:12:26,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 17:12:26,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 17:12:26,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 17:12:26,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 17:12:26,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:12:26,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 17:12:26,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 17:12:26,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:12:26,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:12:26,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:12:26,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:12:26,993 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:12:26,994 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-08-22 17:12:27,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316b1cf0b/fc23771197f746b8b704ee8372d9ae9b/FLAG740e14505 [2020-08-22 17:12:27,789 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:12:27,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-08-22 17:12:27,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316b1cf0b/fc23771197f746b8b704ee8372d9ae9b/FLAG740e14505 [2020-08-22 17:12:27,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316b1cf0b/fc23771197f746b8b704ee8372d9ae9b [2020-08-22 17:12:27,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:12:27,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:12:27,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:12:27,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:12:27,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:12:27,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:12:27" (1/1) ... [2020-08-22 17:12:27,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b14341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:27, skipping insertion in model container [2020-08-22 17:12:27,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:12:27" (1/1) ... [2020-08-22 17:12:27,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:12:28,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:12:30,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:12:30,440 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:12:31,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:12:31,923 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:12:31,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31 WrapperNode [2020-08-22 17:12:31,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:12:31,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:12:31,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:12:31,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:12:31,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (1/1) ... [2020-08-22 17:12:31,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (1/1) ... [2020-08-22 17:12:31,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (1/1) ... [2020-08-22 17:12:31,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (1/1) ... [2020-08-22 17:12:32,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (1/1) ... [2020-08-22 17:12:32,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (1/1) ... [2020-08-22 17:12:32,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (1/1) ... [2020-08-22 17:12:32,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:12:32,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:12:32,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:12:32,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:12:32,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (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 [2020-08-22 17:12:32,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:12:32,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:12:32,246 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 17:12:32,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:12:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:12:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 17:12:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 17:12:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 17:12:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 17:12:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 17:12:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 17:12:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 17:12:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 17:12:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 17:12:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 17:12:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-22 17:12:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-08-22 17:12:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 17:12:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 17:12:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:12:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:12:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:12:37,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:12:37,612 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 17:12:37,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:12:37 BoogieIcfgContainer [2020-08-22 17:12:37,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:12:37,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:12:37,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:12:37,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:12:37,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:12:27" (1/3) ... [2020-08-22 17:12:37,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8a1b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:12:37, skipping insertion in model container [2020-08-22 17:12:37,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:12:31" (2/3) ... [2020-08-22 17:12:37,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8a1b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:12:37, skipping insertion in model container [2020-08-22 17:12:37,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:12:37" (3/3) ... [2020-08-22 17:12:37,636 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-08-22 17:12:37,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:12:37,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-22 17:12:37,669 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-22 17:12:37,700 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:12:37,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:12:37,700 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 17:12:37,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:12:37,701 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:12:37,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:12:37,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:12:37,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:12:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states. [2020-08-22 17:12:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-08-22 17:12:37,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:12:37,789 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] [2020-08-22 17:12:37,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:12:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:12:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2040294362, now seen corresponding path program 1 times [2020-08-22 17:12:37,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:12:37,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462791870] [2020-08-22 17:12:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:12:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:12:39,687 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:12:39,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:12:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:12:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:12:39,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462791870] [2020-08-22 17:12:39,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:12:39,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 17:12:39,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713298839] [2020-08-22 17:12:40,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 17:12:40,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:12:40,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 17:12:40,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:12:40,028 INFO L87 Difference]: Start difference. First operand 2249 states. Second operand 5 states. [2020-08-22 17:12:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:12:54,599 INFO L93 Difference]: Finished difference Result 3956 states and 6884 transitions. [2020-08-22 17:12:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 17:12:54,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-08-22 17:12:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:12:54,637 INFO L225 Difference]: With dead ends: 3956 [2020-08-22 17:12:54,637 INFO L226 Difference]: Without dead ends: 2245 [2020-08-22 17:12:54,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 17:12:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-08-22 17:12:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-08-22 17:12:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-08-22 17:12:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3871 transitions. [2020-08-22 17:12:54,827 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3871 transitions. Word has length 290 [2020-08-22 17:12:54,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:12:54,831 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 3871 transitions. [2020-08-22 17:12:54,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 17:12:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3871 transitions. [2020-08-22 17:12:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-08-22 17:12:54,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:12:54,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:12:54,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:12:54,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:12:54,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:12:54,851 INFO L82 PathProgramCache]: Analyzing trace with hash -875879150, now seen corresponding path program 1 times [2020-08-22 17:12:54,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:12:54,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499922617] [2020-08-22 17:12:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:12:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:12:56,374 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:12:56,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:12:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:12:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:12:56,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499922617] [2020-08-22 17:12:56,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:12:56,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:12:56,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736374829] [2020-08-22 17:12:56,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:12:56,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:12:56,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:12:56,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:12:56,772 INFO L87 Difference]: Start difference. First operand 2245 states and 3871 transitions. Second operand 4 states. [2020-08-22 17:12:57,560 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-08-22 17:13:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:13:20,006 INFO L93 Difference]: Finished difference Result 5464 states and 9356 transitions. [2020-08-22 17:13:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:13:20,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2020-08-22 17:13:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:13:20,028 INFO L225 Difference]: With dead ends: 5464 [2020-08-22 17:13:20,028 INFO L226 Difference]: Without dead ends: 3801 [2020-08-22 17:13:20,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:13:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-08-22 17:13:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3797. [2020-08-22 17:13:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-08-22 17:13:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6464 transitions. [2020-08-22 17:13:20,148 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6464 transitions. Word has length 349 [2020-08-22 17:13:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:13:20,149 INFO L479 AbstractCegarLoop]: Abstraction has 3797 states and 6464 transitions. [2020-08-22 17:13:20,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:13:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6464 transitions. [2020-08-22 17:13:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-08-22 17:13:20,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:13:20,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:13:20,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:13:20,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:13:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:13:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1287553668, now seen corresponding path program 1 times [2020-08-22 17:13:20,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:13:20,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997847860] [2020-08-22 17:13:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:13:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:13:21,453 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:13:21,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:13:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:13:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:13:21,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997847860] [2020-08-22 17:13:21,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:13:21,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:13:21,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749550986] [2020-08-22 17:13:21,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:13:21,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:13:21,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:13:21,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:13:21,784 INFO L87 Difference]: Start difference. First operand 3797 states and 6464 transitions. Second operand 4 states. [2020-08-22 17:13:22,680 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-08-22 17:13:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:13:42,147 INFO L93 Difference]: Finished difference Result 6370 states and 10871 transitions. [2020-08-22 17:13:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:13:42,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2020-08-22 17:13:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:13:42,171 INFO L225 Difference]: With dead ends: 6370 [2020-08-22 17:13:42,171 INFO L226 Difference]: Without dead ends: 4697 [2020-08-22 17:13:42,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:13:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-08-22 17:13:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4693. [2020-08-22 17:13:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2020-08-22 17:13:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7996 transitions. [2020-08-22 17:13:42,308 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7996 transitions. Word has length 353 [2020-08-22 17:13:42,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:13:42,308 INFO L479 AbstractCegarLoop]: Abstraction has 4693 states and 7996 transitions. [2020-08-22 17:13:42,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:13:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7996 transitions. [2020-08-22 17:13:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-08-22 17:13:42,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:13:42,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:13:42,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:13:42,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:13:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:13:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1465097905, now seen corresponding path program 1 times [2020-08-22 17:13:42,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:13:42,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410295295] [2020-08-22 17:13:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:13:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:13:43,478 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:13:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:13:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:13:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:13:43,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410295295] [2020-08-22 17:13:43,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:13:43,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:13:43,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699931694] [2020-08-22 17:13:43,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:13:43,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:13:43,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:13:43,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:13:43,653 INFO L87 Difference]: Start difference. First operand 4693 states and 7996 transitions. Second operand 4 states. [2020-08-22 17:13:44,402 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-08-22 17:14:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:14:05,402 INFO L93 Difference]: Finished difference Result 12615 states and 21382 transitions. [2020-08-22 17:14:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:14:05,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2020-08-22 17:14:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:14:05,442 INFO L225 Difference]: With dead ends: 12615 [2020-08-22 17:14:05,443 INFO L226 Difference]: Without dead ends: 8527 [2020-08-22 17:14:05,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:14:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8527 states. [2020-08-22 17:14:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8527 to 8523. [2020-08-22 17:14:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8523 states. [2020-08-22 17:14:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 14421 transitions. [2020-08-22 17:14:05,682 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 14421 transitions. Word has length 357 [2020-08-22 17:14:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:14:05,683 INFO L479 AbstractCegarLoop]: Abstraction has 8523 states and 14421 transitions. [2020-08-22 17:14:05,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:14:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 14421 transitions. [2020-08-22 17:14:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-08-22 17:14:05,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:14:05,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:14:05,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:14:05,713 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:14:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:14:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1576454873, now seen corresponding path program 1 times [2020-08-22 17:14:05,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:14:05,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934600785] [2020-08-22 17:14:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:14:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:14:06,713 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:14:06,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:14:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:14:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:14:06,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934600785] [2020-08-22 17:14:06,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:14:06,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:14:06,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645595159] [2020-08-22 17:14:06,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:14:06,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:14:06,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:14:06,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:14:06,861 INFO L87 Difference]: Start difference. First operand 8523 states and 14421 transitions. Second operand 4 states. [2020-08-22 17:14:07,665 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-08-22 17:14:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:14:28,206 INFO L93 Difference]: Finished difference Result 15288 states and 25910 transitions. [2020-08-22 17:14:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:14:28,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2020-08-22 17:14:28,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:14:28,246 INFO L225 Difference]: With dead ends: 15288 [2020-08-22 17:14:28,247 INFO L226 Difference]: Without dead ends: 11190 [2020-08-22 17:14:28,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:14:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2020-08-22 17:14:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 11186. [2020-08-22 17:14:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11186 states. [2020-08-22 17:14:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 18931 transitions. [2020-08-22 17:14:28,645 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 18931 transitions. Word has length 361 [2020-08-22 17:14:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:14:28,646 INFO L479 AbstractCegarLoop]: Abstraction has 11186 states and 18931 transitions. [2020-08-22 17:14:28,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:14:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 18931 transitions. [2020-08-22 17:14:28,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-08-22 17:14:28,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:14:28,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:14:28,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:14:28,674 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:14:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:14:28,675 INFO L82 PathProgramCache]: Analyzing trace with hash 451793818, now seen corresponding path program 1 times [2020-08-22 17:14:28,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:14:28,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257609451] [2020-08-22 17:14:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:14:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:14:29,691 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:14:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:14:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:14:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:14:29,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257609451] [2020-08-22 17:14:29,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:14:29,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:14:29,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590001227] [2020-08-22 17:14:29,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:14:29,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:14:29,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:14:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:14:29,827 INFO L87 Difference]: Start difference. First operand 11186 states and 18931 transitions. Second operand 4 states. [2020-08-22 17:14:30,571 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-08-22 17:14:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:14:52,787 INFO L93 Difference]: Finished difference Result 31564 states and 53193 transitions. [2020-08-22 17:14:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:14:52,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2020-08-22 17:14:52,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:14:52,828 INFO L225 Difference]: With dead ends: 31564 [2020-08-22 17:14:52,829 INFO L226 Difference]: Without dead ends: 21006 [2020-08-22 17:14:52,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:14:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21006 states. [2020-08-22 17:14:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21006 to 21002. [2020-08-22 17:14:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21002 states. [2020-08-22 17:14:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21002 states to 21002 states and 35288 transitions. [2020-08-22 17:14:54,244 INFO L78 Accepts]: Start accepts. Automaton has 21002 states and 35288 transitions. Word has length 365 [2020-08-22 17:14:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:14:54,244 INFO L479 AbstractCegarLoop]: Abstraction has 21002 states and 35288 transitions. [2020-08-22 17:14:54,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:14:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 21002 states and 35288 transitions. [2020-08-22 17:14:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-08-22 17:14:54,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:14:54,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:14:54,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:14:54,284 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:14:54,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:14:54,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1781087804, now seen corresponding path program 1 times [2020-08-22 17:14:54,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:14:54,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464860564] [2020-08-22 17:14:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:14:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:14:55,265 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:14:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:14:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:14:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:14:55,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464860564] [2020-08-22 17:14:55,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:14:55,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:14:55,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130709713] [2020-08-22 17:14:55,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:14:55,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:14:55,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:14:55,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:14:55,407 INFO L87 Difference]: Start difference. First operand 21002 states and 35288 transitions. Second operand 4 states. [2020-08-22 17:14:56,201 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-08-22 17:15:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:15:17,201 INFO L93 Difference]: Finished difference Result 38803 states and 65367 transitions. [2020-08-22 17:15:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:15:17,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 369 [2020-08-22 17:15:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:15:17,257 INFO L225 Difference]: With dead ends: 38803 [2020-08-22 17:15:17,257 INFO L226 Difference]: Without dead ends: 28235 [2020-08-22 17:15:17,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:15:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28235 states. [2020-08-22 17:15:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28235 to 28231. [2020-08-22 17:15:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28231 states. [2020-08-22 17:15:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28231 states to 28231 states and 47446 transitions. [2020-08-22 17:15:18,034 INFO L78 Accepts]: Start accepts. Automaton has 28231 states and 47446 transitions. Word has length 369 [2020-08-22 17:15:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:15:18,034 INFO L479 AbstractCegarLoop]: Abstraction has 28231 states and 47446 transitions. [2020-08-22 17:15:18,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:15:18,035 INFO L276 IsEmpty]: Start isEmpty. Operand 28231 states and 47446 transitions. [2020-08-22 17:15:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-08-22 17:15:18,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:15:18,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:15:18,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:15:18,084 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:15:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:15:18,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1146566953, now seen corresponding path program 1 times [2020-08-22 17:15:18,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:15:18,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116026018] [2020-08-22 17:15:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:15:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:15:19,069 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:15:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:15:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:15:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:15:19,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116026018] [2020-08-22 17:15:19,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:15:19,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:15:19,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368258313] [2020-08-22 17:15:19,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:15:19,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:15:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:15:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:15:19,226 INFO L87 Difference]: Start difference. First operand 28231 states and 47446 transitions. Second operand 4 states. [2020-08-22 17:15:19,965 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-08-22 17:15:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:15:42,110 INFO L93 Difference]: Finished difference Result 81223 states and 135938 transitions. [2020-08-22 17:15:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:15:42,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 373 [2020-08-22 17:15:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:15:42,218 INFO L225 Difference]: With dead ends: 81223 [2020-08-22 17:15:42,218 INFO L226 Difference]: Without dead ends: 53643 [2020-08-22 17:15:42,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:15:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53643 states. [2020-08-22 17:15:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53643 to 53639. [2020-08-22 17:15:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53639 states. [2020-08-22 17:15:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53639 states to 53639 states and 89423 transitions. [2020-08-22 17:15:43,305 INFO L78 Accepts]: Start accepts. Automaton has 53639 states and 89423 transitions. Word has length 373 [2020-08-22 17:15:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:15:43,306 INFO L479 AbstractCegarLoop]: Abstraction has 53639 states and 89423 transitions. [2020-08-22 17:15:43,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:15:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 53639 states and 89423 transitions. [2020-08-22 17:15:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-08-22 17:15:43,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:15:43,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:15:43,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:15:43,345 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:15:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:15:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2020671087, now seen corresponding path program 1 times [2020-08-22 17:15:43,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:15:43,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983359345] [2020-08-22 17:15:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:15:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:15:44,840 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:15:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:15:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:15:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:15:44,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983359345] [2020-08-22 17:15:44,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:15:44,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:15:44,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251778213] [2020-08-22 17:15:45,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:15:45,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:15:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:15:45,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:15:45,001 INFO L87 Difference]: Start difference. First operand 53639 states and 89423 transitions. Second operand 4 states. [2020-08-22 17:15:45,848 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-08-22 17:16:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:16:08,463 INFO L93 Difference]: Finished difference Result 100010 states and 167236 transitions. [2020-08-22 17:16:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:16:08,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2020-08-22 17:16:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:16:08,555 INFO L225 Difference]: With dead ends: 100010 [2020-08-22 17:16:08,555 INFO L226 Difference]: Without dead ends: 72420 [2020-08-22 17:16:08,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:16:08,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72420 states. [2020-08-22 17:16:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72420 to 72416. [2020-08-22 17:16:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72416 states. [2020-08-22 17:16:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72416 states to 72416 states and 120709 transitions. [2020-08-22 17:16:12,298 INFO L78 Accepts]: Start accepts. Automaton has 72416 states and 120709 transitions. Word has length 377 [2020-08-22 17:16:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:16:12,299 INFO L479 AbstractCegarLoop]: Abstraction has 72416 states and 120709 transitions. [2020-08-22 17:16:12,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:16:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 72416 states and 120709 transitions. [2020-08-22 17:16:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-08-22 17:16:12,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:16:12,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:16:12,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:16:12,356 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:16:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:16:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash -315546078, now seen corresponding path program 1 times [2020-08-22 17:16:12,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:16:12,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712651171] [2020-08-22 17:16:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:16:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:16:13,332 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:16:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:16:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:16:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:16:13,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712651171] [2020-08-22 17:16:13,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:16:13,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:16:13,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119677862] [2020-08-22 17:16:13,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:16:13,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:16:13,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:16:13,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:16:13,445 INFO L87 Difference]: Start difference. First operand 72416 states and 120709 transitions. Second operand 4 states. [2020-08-22 17:16:14,186 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-08-22 17:16:39,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:16:39,727 INFO L93 Difference]: Finished difference Result 209486 states and 347551 transitions. [2020-08-22 17:16:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:16:39,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 381 [2020-08-22 17:16:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:16:39,883 INFO L225 Difference]: With dead ends: 209486 [2020-08-22 17:16:39,883 INFO L226 Difference]: Without dead ends: 137744 [2020-08-22 17:16:39,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:16:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137744 states. [2020-08-22 17:16:43,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137744 to 137740. [2020-08-22 17:16:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137740 states. [2020-08-22 17:16:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137740 states to 137740 states and 227422 transitions. [2020-08-22 17:16:43,256 INFO L78 Accepts]: Start accepts. Automaton has 137740 states and 227422 transitions. Word has length 381 [2020-08-22 17:16:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:16:43,257 INFO L479 AbstractCegarLoop]: Abstraction has 137740 states and 227422 transitions. [2020-08-22 17:16:43,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:16:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 137740 states and 227422 transitions. [2020-08-22 17:16:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-08-22 17:16:43,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:16:43,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:16:43,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:16:43,375 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:16:43,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:16:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash -430938636, now seen corresponding path program 1 times [2020-08-22 17:16:43,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:16:43,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297263063] [2020-08-22 17:16:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:16:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:16:47,012 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:16:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:16:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:16:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:16:47,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297263063] [2020-08-22 17:16:47,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:16:47,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:16:47,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211326363] [2020-08-22 17:16:47,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:16:47,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:16:47,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:16:47,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:16:47,122 INFO L87 Difference]: Start difference. First operand 137740 states and 227422 transitions. Second operand 4 states. [2020-08-22 17:16:47,920 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-08-22 17:17:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:17:11,769 INFO L93 Difference]: Finished difference Result 256489 states and 424821 transitions. [2020-08-22 17:17:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:17:11,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 385 [2020-08-22 17:17:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:17:11,964 INFO L225 Difference]: With dead ends: 256489 [2020-08-22 17:17:11,965 INFO L226 Difference]: Without dead ends: 184737 [2020-08-22 17:17:12,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:17:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184737 states. [2020-08-22 17:17:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184737 to 184733. [2020-08-22 17:17:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184733 states. [2020-08-22 17:17:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184733 states to 184733 states and 304688 transitions. [2020-08-22 17:17:19,827 INFO L78 Accepts]: Start accepts. Automaton has 184733 states and 304688 transitions. Word has length 385 [2020-08-22 17:17:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:17:19,827 INFO L479 AbstractCegarLoop]: Abstraction has 184733 states and 304688 transitions. [2020-08-22 17:17:19,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:17:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 184733 states and 304688 transitions. [2020-08-22 17:17:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-08-22 17:17:19,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:17:19,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:17:19,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 17:17:19,948 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:17:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:17:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1967099999, now seen corresponding path program 1 times [2020-08-22 17:17:19,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:17:19,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771545444] [2020-08-22 17:17:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:17:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:17:21,125 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:17:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:17:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:17:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:17:21,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771545444] [2020-08-22 17:17:21,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:17:21,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:17:21,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795580365] [2020-08-22 17:17:21,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:17:21,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:17:21,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:17:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:17:21,285 INFO L87 Difference]: Start difference. First operand 184733 states and 304688 transitions. Second operand 8 states. [2020-08-22 17:17:22,118 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-08-22 17:18:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:18:31,575 INFO L93 Difference]: Finished difference Result 964911 states and 1597427 transitions. [2020-08-22 17:18:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 17:18:31,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 389 [2020-08-22 17:18:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:18:32,611 INFO L225 Difference]: With dead ends: 964911 [2020-08-22 17:18:32,611 INFO L226 Difference]: Without dead ends: 780855 [2020-08-22 17:18:32,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-08-22 17:18:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780855 states. [2020-08-22 17:19:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780855 to 482150. [2020-08-22 17:19:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482150 states. [2020-08-22 17:19:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482150 states to 482150 states and 793738 transitions. [2020-08-22 17:19:07,376 INFO L78 Accepts]: Start accepts. Automaton has 482150 states and 793738 transitions. Word has length 389 [2020-08-22 17:19:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:19:07,376 INFO L479 AbstractCegarLoop]: Abstraction has 482150 states and 793738 transitions. [2020-08-22 17:19:07,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:19:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 482150 states and 793738 transitions. [2020-08-22 17:19:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-08-22 17:19:07,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:19:07,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:19:07,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 17:19:07,689 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:19:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:19:07,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2060344893, now seen corresponding path program 1 times [2020-08-22 17:19:07,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:19:07,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245736050] [2020-08-22 17:19:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:19:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:19:10,112 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:19:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:19:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:19:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:19:10,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245736050] [2020-08-22 17:19:10,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:19:10,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 17:19:10,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293226245] [2020-08-22 17:19:10,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 17:19:10,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:19:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 17:19:10,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:19:10,258 INFO L87 Difference]: Start difference. First operand 482150 states and 793738 transitions. Second operand 5 states. [2020-08-22 17:19:11,055 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-08-22 17:20:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:20:15,408 INFO L93 Difference]: Finished difference Result 1394270 states and 2304340 transitions. [2020-08-22 17:20:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 17:20:15,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-08-22 17:20:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:20:16,764 INFO L225 Difference]: With dead ends: 1394270 [2020-08-22 17:20:16,764 INFO L226 Difference]: Without dead ends: 912797 [2020-08-22 17:20:17,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:20:17,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912797 states. [2020-08-22 17:21:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912797 to 795622. [2020-08-22 17:21:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795622 states. [2020-08-22 17:21:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795622 states to 795622 states and 1310868 transitions. [2020-08-22 17:21:22,429 INFO L78 Accepts]: Start accepts. Automaton has 795622 states and 1310868 transitions. Word has length 391 [2020-08-22 17:21:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:21:22,429 INFO L479 AbstractCegarLoop]: Abstraction has 795622 states and 1310868 transitions. [2020-08-22 17:21:22,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 17:21:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 795622 states and 1310868 transitions. [2020-08-22 17:21:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-08-22 17:21:23,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:21:23,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:21:23,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 17:21:23,048 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:21:23,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:21:23,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1604484090, now seen corresponding path program 1 times [2020-08-22 17:21:23,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:21:23,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400145090] [2020-08-22 17:21:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:21:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:21:25,252 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 394 [2020-08-22 17:21:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:21:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:21:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:21:25,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400145090] [2020-08-22 17:21:25,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:21:25,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 17:21:25,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803837277] [2020-08-22 17:21:25,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 17:21:25,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:21:25,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 17:21:25,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:21:25,378 INFO L87 Difference]: Start difference. First operand 795622 states and 1310868 transitions. Second operand 5 states. [2020-08-22 17:21:26,187 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-08-22 17:23:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:23:13,887 INFO L93 Difference]: Finished difference Result 2284364 states and 3769757 transitions. [2020-08-22 17:23:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 17:23:13,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 392 [2020-08-22 17:23:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:23:16,127 INFO L225 Difference]: With dead ends: 2284364 [2020-08-22 17:23:16,128 INFO L226 Difference]: Without dead ends: 1489419 [2020-08-22 17:23:16,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:23:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489419 states.