/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -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 0.1.25-79ed534 [2020-07-19 22:00:50,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 22:00:50,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 22:00:50,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 22:00:50,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 22:00:50,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 22:00:50,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 22:00:50,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 22:00:50,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 22:00:50,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 22:00:50,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 22:00:50,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 22:00:50,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 22:00:50,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 22:00:50,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 22:00:50,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 22:00:50,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 22:00:50,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 22:00:50,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 22:00:50,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 22:00:50,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 22:00:50,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 22:00:50,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 22:00:50,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 22:00:50,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 22:00:50,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 22:00:50,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 22:00:50,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 22:00:50,627 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 [2020-07-19 22:00:50,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 22:00:50,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 22:00:50,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 22:00:50,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 22:00:50,644 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 22:00:50,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 22:00:50,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 22:00:50,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 22:00:50,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 22:00:50,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 22:00:50,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 22:00:50,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 22:00:50,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 22:00:50,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 22:00:50,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 22:00:50,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 22:00:50,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 22:00:50,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 22:00:50,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 22:00:50,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 22:00:50,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 22:00:50,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 22:00:50,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 22:00:50,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 22:00:50,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 22:00:50,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 22:00:50,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 22:00:50,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 22:00:50,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 22:00:50,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 22:00:50,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 22:00:50,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 22:00:50,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 22:00:50,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 22:00:50,929 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 22:00:50,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-19 22:00:51,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa4b4597d/25a32879d817479abdd64f37bff306f3/FLAGa1aaf4d88 [2020-07-19 22:00:51,712 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 22:00:51,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-19 22:00:51,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa4b4597d/25a32879d817479abdd64f37bff306f3/FLAGa1aaf4d88 [2020-07-19 22:00:51,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa4b4597d/25a32879d817479abdd64f37bff306f3 [2020-07-19 22:00:51,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 22:00:51,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 22:00:51,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 22:00:51,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 22:00:51,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 22:00:51,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:00:51" (1/1) ... [2020-07-19 22:00:51,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ec6135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:51, skipping insertion in model container [2020-07-19 22:00:51,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:00:51" (1/1) ... [2020-07-19 22:00:51,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 22:00:52,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 22:00:54,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 22:00:54,457 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 22:00:55,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 22:00:55,922 INFO L208 MainTranslator]: Completed translation [2020-07-19 22:00:55,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55 WrapperNode [2020-07-19 22:00:55,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 22:00:55,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 22:00:55,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 22:00:55,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 22:00:55,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (1/1) ... [2020-07-19 22:00:55,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (1/1) ... [2020-07-19 22:00:55,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (1/1) ... [2020-07-19 22:00:55,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (1/1) ... [2020-07-19 22:00:56,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (1/1) ... [2020-07-19 22:00:56,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (1/1) ... [2020-07-19 22:00:56,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (1/1) ... [2020-07-19 22:00:56,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 22:00:56,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 22:00:56,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 22:00:56,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 22:00:56,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (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 [2020-07-19 22:00:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 22:00:56,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 22:00:56,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 22:00:56,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 22:00:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 22:00:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-19 22:00:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-19 22:00:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-19 22:00:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 22:00:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 22:00:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-19 22:00:56,336 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-19 22:00:56,336 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-19 22:00:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-19 22:00:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-19 22:00:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-19 22:00:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-19 22:00:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-19 22:00:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-19 22:00:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 22:00:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 22:00:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 22:01:02,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 22:01:02,556 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 22:01:02,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:01:02 BoogieIcfgContainer [2020-07-19 22:01:02,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 22:01:02,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 22:01:02,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 22:01:02,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 22:01:02,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:00:51" (1/3) ... [2020-07-19 22:01:02,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd89aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:01:02, skipping insertion in model container [2020-07-19 22:01:02,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:00:55" (2/3) ... [2020-07-19 22:01:02,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd89aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:01:02, skipping insertion in model container [2020-07-19 22:01:02,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:01:02" (3/3) ... [2020-07-19 22:01:02,583 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-19 22:01:02,591 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 22:01:02,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-19 22:01:02,613 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-19 22:01:02,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 22:01:02,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 22:01:02,643 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 22:01:02,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 22:01:02,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 22:01:02,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 22:01:02,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 22:01:02,644 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 22:01:02,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states. [2020-07-19 22:01:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-07-19 22:01:02,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:01:02,740 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] [2020-07-19 22:01:02,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:01:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:01:02,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2040294362, now seen corresponding path program 1 times [2020-07-19 22:01:02,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:01:02,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69509248] [2020-07-19 22:01:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:01:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:01:04,641 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:01:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:01:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:01:04,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69509248] [2020-07-19 22:01:04,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:01:04,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 22:01:04,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400029062] [2020-07-19 22:01:04,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 22:01:04,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:01:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 22:01:04,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:01:04,828 INFO L87 Difference]: Start difference. First operand 2249 states. Second operand 5 states. [2020-07-19 22:01:19,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:01:19,125 INFO L93 Difference]: Finished difference Result 3956 states and 6884 transitions. [2020-07-19 22:01:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 22:01:19,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-07-19 22:01:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:01:19,161 INFO L225 Difference]: With dead ends: 3956 [2020-07-19 22:01:19,162 INFO L226 Difference]: Without dead ends: 2245 [2020-07-19 22:01:19,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 22:01:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-07-19 22:01:19,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-07-19 22:01:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-07-19 22:01:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3871 transitions. [2020-07-19 22:01:19,322 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3871 transitions. Word has length 290 [2020-07-19 22:01:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:01:19,323 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 3871 transitions. [2020-07-19 22:01:19,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 22:01:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3871 transitions. [2020-07-19 22:01:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-19 22:01:19,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:01:19,339 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] [2020-07-19 22:01:19,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 22:01:19,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:01:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:01:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash -875879150, now seen corresponding path program 1 times [2020-07-19 22:01:19,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:01:19,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380006093] [2020-07-19 22:01:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:01:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:01:20,492 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:01:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:01:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:01:20,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380006093] [2020-07-19 22:01:20,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:01:20,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:01:20,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690538094] [2020-07-19 22:01:20,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:01:20,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:01:20,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:01:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:01:20,652 INFO L87 Difference]: Start difference. First operand 2245 states and 3871 transitions. Second operand 4 states. [2020-07-19 22:01:21,352 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-19 22:01:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:01:42,815 INFO L93 Difference]: Finished difference Result 5464 states and 9356 transitions. [2020-07-19 22:01:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:01:42,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2020-07-19 22:01:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:01:42,837 INFO L225 Difference]: With dead ends: 5464 [2020-07-19 22:01:42,837 INFO L226 Difference]: Without dead ends: 3801 [2020-07-19 22:01:42,842 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 [2020-07-19 22:01:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-07-19 22:01:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3797. [2020-07-19 22:01:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-07-19 22:01:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6464 transitions. [2020-07-19 22:01:42,952 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6464 transitions. Word has length 349 [2020-07-19 22:01:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:01:42,955 INFO L479 AbstractCegarLoop]: Abstraction has 3797 states and 6464 transitions. [2020-07-19 22:01:42,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:01:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6464 transitions. [2020-07-19 22:01:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-07-19 22:01:42,967 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:01:42,968 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] [2020-07-19 22:01:42,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 22:01:42,968 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:01:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:01:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1287553668, now seen corresponding path program 1 times [2020-07-19 22:01:42,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:01:42,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127209225] [2020-07-19 22:01:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:01:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:01:43,973 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:01:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:01:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:01:44,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127209225] [2020-07-19 22:01:44,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:01:44,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:01:44,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696798231] [2020-07-19 22:01:44,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:01:44,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:01:44,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:01:44,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:01:44,145 INFO L87 Difference]: Start difference. First operand 3797 states and 6464 transitions. Second operand 4 states. [2020-07-19 22:01:44,871 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-19 22:02:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:02:04,273 INFO L93 Difference]: Finished difference Result 6370 states and 10871 transitions. [2020-07-19 22:02:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:02:04,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2020-07-19 22:02:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:02:04,297 INFO L225 Difference]: With dead ends: 6370 [2020-07-19 22:02:04,297 INFO L226 Difference]: Without dead ends: 4697 [2020-07-19 22:02:04,301 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 [2020-07-19 22:02:04,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-07-19 22:02:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4693. [2020-07-19 22:02:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2020-07-19 22:02:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7996 transitions. [2020-07-19 22:02:04,423 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7996 transitions. Word has length 353 [2020-07-19 22:02:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:02:04,423 INFO L479 AbstractCegarLoop]: Abstraction has 4693 states and 7996 transitions. [2020-07-19 22:02:04,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:02:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7996 transitions. [2020-07-19 22:02:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-07-19 22:02:04,441 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:02:04,442 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] [2020-07-19 22:02:04,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 22:02:04,442 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:02:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:02:04,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1465097905, now seen corresponding path program 1 times [2020-07-19 22:02:04,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:02:04,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397986826] [2020-07-19 22:02:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:02:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:02:05,427 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:02:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:02:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:02:05,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397986826] [2020-07-19 22:02:05,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:02:05,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:02:05,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143833517] [2020-07-19 22:02:05,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:02:05,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:02:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:02:05,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:02:05,587 INFO L87 Difference]: Start difference. First operand 4693 states and 7996 transitions. Second operand 4 states. [2020-07-19 22:02:06,298 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-19 22:02:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:02:26,821 INFO L93 Difference]: Finished difference Result 12615 states and 21382 transitions. [2020-07-19 22:02:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:02:26,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2020-07-19 22:02:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:02:26,855 INFO L225 Difference]: With dead ends: 12615 [2020-07-19 22:02:26,855 INFO L226 Difference]: Without dead ends: 8527 [2020-07-19 22:02:26,864 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 [2020-07-19 22:02:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8527 states. [2020-07-19 22:02:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8527 to 8523. [2020-07-19 22:02:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8523 states. [2020-07-19 22:02:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 14421 transitions. [2020-07-19 22:02:27,066 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 14421 transitions. Word has length 357 [2020-07-19 22:02:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:02:27,067 INFO L479 AbstractCegarLoop]: Abstraction has 8523 states and 14421 transitions. [2020-07-19 22:02:27,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:02:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 14421 transitions. [2020-07-19 22:02:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-07-19 22:02:27,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:02:27,089 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] [2020-07-19 22:02:27,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 22:02:27,089 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:02:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:02:27,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1576454873, now seen corresponding path program 1 times [2020-07-19 22:02:27,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:02:27,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850016259] [2020-07-19 22:02:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:02:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:02:28,148 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:02:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:02:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:02:28,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850016259] [2020-07-19 22:02:28,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:02:28,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:02:28,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775328997] [2020-07-19 22:02:28,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:02:28,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:02:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:02:28,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:02:28,277 INFO L87 Difference]: Start difference. First operand 8523 states and 14421 transitions. Second operand 4 states. [2020-07-19 22:02:29,006 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-19 22:02:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:02:49,624 INFO L93 Difference]: Finished difference Result 15288 states and 25910 transitions. [2020-07-19 22:02:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:02:49,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2020-07-19 22:02:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:02:49,658 INFO L225 Difference]: With dead ends: 15288 [2020-07-19 22:02:49,658 INFO L226 Difference]: Without dead ends: 11190 [2020-07-19 22:02:49,668 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 [2020-07-19 22:02:49,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2020-07-19 22:02:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 11186. [2020-07-19 22:02:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11186 states. [2020-07-19 22:02:49,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 18931 transitions. [2020-07-19 22:02:49,968 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 18931 transitions. Word has length 361 [2020-07-19 22:02:49,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:02:49,968 INFO L479 AbstractCegarLoop]: Abstraction has 11186 states and 18931 transitions. [2020-07-19 22:02:49,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:02:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 18931 transitions. [2020-07-19 22:02:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-07-19 22:02:49,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:02:49,987 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] [2020-07-19 22:02:49,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 22:02:49,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:02:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:02:49,988 INFO L82 PathProgramCache]: Analyzing trace with hash 451793818, now seen corresponding path program 1 times [2020-07-19 22:02:49,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:02:49,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210384800] [2020-07-19 22:02:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:02:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:02:51,034 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:02:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:02:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:02:51,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210384800] [2020-07-19 22:02:51,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:02:51,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:02:51,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869907463] [2020-07-19 22:02:51,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:02:51,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:02:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:02:51,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:02:51,184 INFO L87 Difference]: Start difference. First operand 11186 states and 18931 transitions. Second operand 4 states. [2020-07-19 22:02:51,908 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-19 22:03:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:03:13,950 INFO L93 Difference]: Finished difference Result 31564 states and 53193 transitions. [2020-07-19 22:03:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:03:13,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2020-07-19 22:03:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:03:13,994 INFO L225 Difference]: With dead ends: 31564 [2020-07-19 22:03:13,994 INFO L226 Difference]: Without dead ends: 21006 [2020-07-19 22:03:14,018 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 [2020-07-19 22:03:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21006 states. [2020-07-19 22:03:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21006 to 21002. [2020-07-19 22:03:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21002 states. [2020-07-19 22:03:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21002 states to 21002 states and 35288 transitions. [2020-07-19 22:03:14,534 INFO L78 Accepts]: Start accepts. Automaton has 21002 states and 35288 transitions. Word has length 365 [2020-07-19 22:03:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:03:14,534 INFO L479 AbstractCegarLoop]: Abstraction has 21002 states and 35288 transitions. [2020-07-19 22:03:14,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:03:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 21002 states and 35288 transitions. [2020-07-19 22:03:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-07-19 22:03:14,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:03:14,565 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] [2020-07-19 22:03:14,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 22:03:14,566 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:03:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:03:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1781087804, now seen corresponding path program 1 times [2020-07-19 22:03:14,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:03:14,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687681058] [2020-07-19 22:03:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:03:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:03:16,366 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:03:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:03:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:03:16,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687681058] [2020-07-19 22:03:16,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:03:16,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:03:16,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098678599] [2020-07-19 22:03:16,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:03:16,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:03:16,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:03:16,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:03:16,506 INFO L87 Difference]: Start difference. First operand 21002 states and 35288 transitions. Second operand 4 states. [2020-07-19 22:03:17,261 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-19 22:03:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:03:37,139 INFO L93 Difference]: Finished difference Result 38803 states and 65367 transitions. [2020-07-19 22:03:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:03:37,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 369 [2020-07-19 22:03:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:03:37,186 INFO L225 Difference]: With dead ends: 38803 [2020-07-19 22:03:37,186 INFO L226 Difference]: Without dead ends: 28235 [2020-07-19 22:03:37,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:03:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28235 states. [2020-07-19 22:03:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28235 to 28231. [2020-07-19 22:03:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28231 states. [2020-07-19 22:03:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28231 states to 28231 states and 47446 transitions. [2020-07-19 22:03:37,949 INFO L78 Accepts]: Start accepts. Automaton has 28231 states and 47446 transitions. Word has length 369 [2020-07-19 22:03:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:03:37,949 INFO L479 AbstractCegarLoop]: Abstraction has 28231 states and 47446 transitions. [2020-07-19 22:03:37,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:03:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28231 states and 47446 transitions. [2020-07-19 22:03:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-07-19 22:03:37,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:03:37,977 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] [2020-07-19 22:03:37,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 22:03:37,978 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:03:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:03:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1146566953, now seen corresponding path program 1 times [2020-07-19 22:03:37,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:03:37,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880158360] [2020-07-19 22:03:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:03:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:03:38,965 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:03:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:03:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:03:39,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880158360] [2020-07-19 22:03:39,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:03:39,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:03:39,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166470595] [2020-07-19 22:03:39,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:03:39,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:03:39,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:03:39,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:03:39,095 INFO L87 Difference]: Start difference. First operand 28231 states and 47446 transitions. Second operand 4 states. [2020-07-19 22:03:39,831 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-19 22:04:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:04:01,797 INFO L93 Difference]: Finished difference Result 81223 states and 135938 transitions. [2020-07-19 22:04:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:04:01,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 373 [2020-07-19 22:04:01,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:04:01,871 INFO L225 Difference]: With dead ends: 81223 [2020-07-19 22:04:01,872 INFO L226 Difference]: Without dead ends: 53643 [2020-07-19 22:04:01,918 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 [2020-07-19 22:04:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53643 states. [2020-07-19 22:04:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53643 to 53639. [2020-07-19 22:04:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53639 states. [2020-07-19 22:04:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53639 states to 53639 states and 89423 transitions. [2020-07-19 22:04:02,959 INFO L78 Accepts]: Start accepts. Automaton has 53639 states and 89423 transitions. Word has length 373 [2020-07-19 22:04:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:04:02,959 INFO L479 AbstractCegarLoop]: Abstraction has 53639 states and 89423 transitions. [2020-07-19 22:04:02,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:04:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 53639 states and 89423 transitions. [2020-07-19 22:04:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-07-19 22:04:02,998 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:04:02,998 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] [2020-07-19 22:04:02,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 22:04:02,999 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:04:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:04:02,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2020671087, now seen corresponding path program 1 times [2020-07-19 22:04:02,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:04:03,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634695671] [2020-07-19 22:04:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:04:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:04:04,340 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:04:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:04:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:04:04,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634695671] [2020-07-19 22:04:04,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:04:04,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:04:04,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533774205] [2020-07-19 22:04:04,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:04:04,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:04:04,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:04:04,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:04:04,542 INFO L87 Difference]: Start difference. First operand 53639 states and 89423 transitions. Second operand 4 states. [2020-07-19 22:04:05,298 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-19 22:04:27,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:04:27,533 INFO L93 Difference]: Finished difference Result 100010 states and 167236 transitions. [2020-07-19 22:04:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:04:27,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2020-07-19 22:04:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:04:27,612 INFO L225 Difference]: With dead ends: 100010 [2020-07-19 22:04:27,612 INFO L226 Difference]: Without dead ends: 72420 [2020-07-19 22:04:27,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:04:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72420 states. [2020-07-19 22:04:30,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72420 to 72416. [2020-07-19 22:04:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72416 states. [2020-07-19 22:04:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72416 states to 72416 states and 120709 transitions. [2020-07-19 22:04:31,075 INFO L78 Accepts]: Start accepts. Automaton has 72416 states and 120709 transitions. Word has length 377 [2020-07-19 22:04:31,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:04:31,076 INFO L479 AbstractCegarLoop]: Abstraction has 72416 states and 120709 transitions. [2020-07-19 22:04:31,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:04:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 72416 states and 120709 transitions. [2020-07-19 22:04:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-07-19 22:04:31,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:04:31,136 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] [2020-07-19 22:04:31,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 22:04:31,137 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:04:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:04:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash -315546078, now seen corresponding path program 1 times [2020-07-19 22:04:31,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:04:31,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990201973] [2020-07-19 22:04:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:04:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:04:32,087 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:04:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:04:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:04:32,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990201973] [2020-07-19 22:04:32,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:04:32,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:04:32,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51845374] [2020-07-19 22:04:32,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:04:32,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:04:32,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:04:32,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:04:32,262 INFO L87 Difference]: Start difference. First operand 72416 states and 120709 transitions. Second operand 4 states. [2020-07-19 22:04:33,001 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-19 22:04:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:04:58,514 INFO L93 Difference]: Finished difference Result 209486 states and 347551 transitions. [2020-07-19 22:04:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:04:58,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 381 [2020-07-19 22:04:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:04:58,656 INFO L225 Difference]: With dead ends: 209486 [2020-07-19 22:04:58,656 INFO L226 Difference]: Without dead ends: 137744 [2020-07-19 22:04:58,725 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 [2020-07-19 22:04:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137744 states. [2020-07-19 22:05:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137744 to 137740. [2020-07-19 22:05:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137740 states. [2020-07-19 22:05:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137740 states to 137740 states and 227422 transitions. [2020-07-19 22:05:05,324 INFO L78 Accepts]: Start accepts. Automaton has 137740 states and 227422 transitions. Word has length 381 [2020-07-19 22:05:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:05:05,325 INFO L479 AbstractCegarLoop]: Abstraction has 137740 states and 227422 transitions. [2020-07-19 22:05:05,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:05:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 137740 states and 227422 transitions. [2020-07-19 22:05:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-07-19 22:05:05,415 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:05:05,415 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] [2020-07-19 22:05:05,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 22:05:05,416 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:05:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:05:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash -430938636, now seen corresponding path program 1 times [2020-07-19 22:05:05,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:05:05,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685976999] [2020-07-19 22:05:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:05:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:05:06,411 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:05:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:05:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:05:06,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685976999] [2020-07-19 22:05:06,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:05:06,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:05:06,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867874116] [2020-07-19 22:05:06,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:05:06,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:05:06,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:05:06,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:05:06,534 INFO L87 Difference]: Start difference. First operand 137740 states and 227422 transitions. Second operand 4 states. [2020-07-19 22:05:07,353 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-19 22:05:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:05:34,985 INFO L93 Difference]: Finished difference Result 256489 states and 424821 transitions. [2020-07-19 22:05:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:05:34,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 385 [2020-07-19 22:05:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:05:35,182 INFO L225 Difference]: With dead ends: 256489 [2020-07-19 22:05:35,182 INFO L226 Difference]: Without dead ends: 184737 [2020-07-19 22:05:35,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:05:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184737 states. [2020-07-19 22:05:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184737 to 184733. [2020-07-19 22:05:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184733 states. [2020-07-19 22:05:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184733 states to 184733 states and 304688 transitions. [2020-07-19 22:05:39,419 INFO L78 Accepts]: Start accepts. Automaton has 184733 states and 304688 transitions. Word has length 385 [2020-07-19 22:05:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:05:39,420 INFO L479 AbstractCegarLoop]: Abstraction has 184733 states and 304688 transitions. [2020-07-19 22:05:39,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:05:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 184733 states and 304688 transitions. [2020-07-19 22:05:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-19 22:05:39,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:05:39,543 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] [2020-07-19 22:05:39,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-19 22:05:39,543 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:05:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:05:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1967099999, now seen corresponding path program 1 times [2020-07-19 22:05:39,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:05:39,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992993310] [2020-07-19 22:05:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:05:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:05:40,610 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:05:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:05:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:05:40,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992993310] [2020-07-19 22:05:40,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:05:40,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 22:05:40,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417304932] [2020-07-19 22:05:40,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 22:05:40,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:05:40,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 22:05:40,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 22:05:40,773 INFO L87 Difference]: Start difference. First operand 184733 states and 304688 transitions. Second operand 8 states. [2020-07-19 22:05:41,598 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-07-19 22:06:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:06:50,947 INFO L93 Difference]: Finished difference Result 966455 states and 1599357 transitions. [2020-07-19 22:06:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 22:06:50,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 389 [2020-07-19 22:06:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:06:51,913 INFO L225 Difference]: With dead ends: 966455 [2020-07-19 22:06:51,913 INFO L226 Difference]: Without dead ends: 782399 [2020-07-19 22:06:52,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-19 22:06:52,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782399 states. [2020-07-19 22:07:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782399 to 367634. [2020-07-19 22:07:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367634 states. [2020-07-19 22:07:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367634 states to 367634 states and 603488 transitions. [2020-07-19 22:07:19,093 INFO L78 Accepts]: Start accepts. Automaton has 367634 states and 603488 transitions. Word has length 389 [2020-07-19 22:07:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:07:19,094 INFO L479 AbstractCegarLoop]: Abstraction has 367634 states and 603488 transitions. [2020-07-19 22:07:19,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 22:07:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 367634 states and 603488 transitions. [2020-07-19 22:07:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-19 22:07:19,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:07:19,334 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] [2020-07-19 22:07:19,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-19 22:07:19,334 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:07:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:07:19,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2060344893, now seen corresponding path program 1 times [2020-07-19 22:07:19,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:07:19,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769857755] [2020-07-19 22:07:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:07:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:07:25,040 WARN L193 SmtUtils]: Spent 5.38 s on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:07:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:07:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:07:25,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769857755] [2020-07-19 22:07:25,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:07:25,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 22:07:25,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012335942] [2020-07-19 22:07:25,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 22:07:25,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:07:25,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 22:07:25,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:07:25,152 INFO L87 Difference]: Start difference. First operand 367634 states and 603488 transitions. Second operand 5 states. [2020-07-19 22:07:25,938 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-19 22:08:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:08:20,104 INFO L93 Difference]: Finished difference Result 1094138 states and 1804332 transitions. [2020-07-19 22:08:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 22:08:20,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-07-19 22:08:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:08:21,037 INFO L225 Difference]: With dead ends: 1094138 [2020-07-19 22:08:21,038 INFO L226 Difference]: Without dead ends: 727181 [2020-07-19 22:08:21,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-19 22:08:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727181 states. [2020-07-19 22:08:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727181 to 607029. [2020-07-19 22:08:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607029 states. [2020-07-19 22:09:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607029 states to 607029 states and 997448 transitions. [2020-07-19 22:09:00,261 INFO L78 Accepts]: Start accepts. Automaton has 607029 states and 997448 transitions. Word has length 391 [2020-07-19 22:09:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:09:00,262 INFO L479 AbstractCegarLoop]: Abstraction has 607029 states and 997448 transitions. [2020-07-19 22:09:00,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 22:09:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 607029 states and 997448 transitions. [2020-07-19 22:09:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-07-19 22:09:01,948 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:09:01,948 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] [2020-07-19 22:09:01,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-19 22:09:01,949 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:09:01,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:09:01,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1604484090, now seen corresponding path program 1 times [2020-07-19 22:09:01,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:09:01,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745574361] [2020-07-19 22:09:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:09:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:09:02,915 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:09:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:09:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:09:03,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745574361] [2020-07-19 22:09:03,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:09:03,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 22:09:03,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770539633] [2020-07-19 22:09:03,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 22:09:03,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:09:03,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 22:09:03,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:09:03,046 INFO L87 Difference]: Start difference. First operand 607029 states and 997448 transitions. Second operand 5 states. [2020-07-19 22:09:10,109 WARN L193 SmtUtils]: Spent 7.02 s on a formula simplification that was a NOOP. DAG size: 397 [2020-07-19 22:10:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:10:23,480 INFO L93 Difference]: Finished difference Result 1799282 states and 2962185 transitions. [2020-07-19 22:10:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 22:10:23,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 392 [2020-07-19 22:10:23,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:10:25,973 INFO L225 Difference]: With dead ends: 1799282 [2020-07-19 22:10:25,973 INFO L226 Difference]: Without dead ends: 1192930 [2020-07-19 22:10:26,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-19 22:10:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192930 states. [2020-07-19 22:11:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192930 to 997850. [2020-07-19 22:11:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997850 states. [2020-07-19 22:11:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997850 states to 997850 states and 1635986 transitions. [2020-07-19 22:11:44,373 INFO L78 Accepts]: Start accepts. Automaton has 997850 states and 1635986 transitions. Word has length 392 [2020-07-19 22:11:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:11:44,373 INFO L479 AbstractCegarLoop]: Abstraction has 997850 states and 1635986 transitions. [2020-07-19 22:11:44,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 22:11:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 997850 states and 1635986 transitions. [2020-07-19 22:11:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-07-19 22:11:57,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:11:57,683 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, 1] [2020-07-19 22:11:57,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-19 22:11:57,683 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:11:57,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:11:57,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1849704260, now seen corresponding path program 1 times [2020-07-19 22:11:57,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:11:57,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066153896] [2020-07-19 22:11:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3198df8c [2020-07-19 22:11:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:11:58,668 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-19 22:11:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:11:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:11:58,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066153896] [2020-07-19 22:11:58,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:11:58,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 22:11:58,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970642889] [2020-07-19 22:11:58,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 22:11:58,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:11:58,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 22:11:58,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:11:58,783 INFO L87 Difference]: Start difference. First operand 997850 states and 1635986 transitions. Second operand 5 states. [2020-07-19 22:11:59,734 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 398