/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:37:47,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:37:47,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:37:47,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:37:47,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:37:47,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:37:47,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:37:47,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:37:47,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:37:47,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:37:47,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:37:47,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:37:47,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:37:47,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:37:47,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:37:47,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:37:47,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:37:47,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:37:47,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:37:47,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:37:47,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:37:47,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:37:47,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:37:47,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:37:47,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:37:47,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:37:47,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:37:47,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:37:47,495 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 [2020-07-20 06:37:47,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:37:47,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:37:47,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:37:47,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:37:47,512 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:37:47,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:37:47,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:37:47,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:37:47,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:37:47,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:37:47,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:37:47,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:37:47,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:37:47,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:37:47,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:37:47,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:37:47,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:37:47,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:37:47,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:37:47,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:37:47,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:37:47,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:37:47,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:37:47,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:37:47,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:37:47,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:37:47,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:37:47,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:37:47,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:37:47,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:37:47,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:37:47,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:37:47,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:37:47,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:37:47,819 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:37:47,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 06:37:47,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7d3bce7/97b9dfdf858b4cf0b0464dc47b03feae/FLAGc1eb8acda [2020-07-20 06:37:48,554 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:37:48,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 06:37:48,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7d3bce7/97b9dfdf858b4cf0b0464dc47b03feae/FLAGc1eb8acda [2020-07-20 06:37:48,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7d3bce7/97b9dfdf858b4cf0b0464dc47b03feae [2020-07-20 06:37:48,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:37:48,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:37:48,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:37:48,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:37:48,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:37:48,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:37:48" (1/1) ... [2020-07-20 06:37:48,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298d512b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:48, skipping insertion in model container [2020-07-20 06:37:48,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:37:48" (1/1) ... [2020-07-20 06:37:48,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:37:48,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:37:50,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:37:50,853 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:37:52,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:37:52,539 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:37:52,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52 WrapperNode [2020-07-20 06:37:52,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:37:52,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:37:52,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:37:52,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:37:52,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (1/1) ... [2020-07-20 06:37:52,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (1/1) ... [2020-07-20 06:37:52,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (1/1) ... [2020-07-20 06:37:52,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (1/1) ... [2020-07-20 06:37:52,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (1/1) ... [2020-07-20 06:37:52,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (1/1) ... [2020-07-20 06:37:52,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (1/1) ... [2020-07-20 06:37:52,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:37:52,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:37:52,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:37:52,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:37:52,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (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 [2020-07-20 06:37:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:37:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:37:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:37:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:37:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:37:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 06:37:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 06:37:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 06:37:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 06:37:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:37:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:37:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 06:37:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 06:37:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 06:37:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 06:37:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 06:37:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 06:37:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-20 06:37:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 06:37:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 06:37:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:37:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:37:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:37:57,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:37:57,440 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 06:37:57,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:37:57 BoogieIcfgContainer [2020-07-20 06:37:57,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:37:57,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:37:57,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:37:57,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:37:57,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:37:48" (1/3) ... [2020-07-20 06:37:57,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595171ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:37:57, skipping insertion in model container [2020-07-20 06:37:57,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:52" (2/3) ... [2020-07-20 06:37:57,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595171ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:37:57, skipping insertion in model container [2020-07-20 06:37:57,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:37:57" (3/3) ... [2020-07-20 06:37:57,464 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 06:37:57,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:37:57,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-20 06:37:57,507 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-20 06:37:57,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:37:57,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:37:57,545 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:37:57,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:37:57,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:37:57,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:37:57,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:37:57,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:37:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states. [2020-07-20 06:37:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-07-20 06:37:57,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:37:57,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:37:57,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:37:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:37:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1738290825, now seen corresponding path program 1 times [2020-07-20 06:37:57,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:37:57,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783515531] [2020-07-20 06:37:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:37:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:01,190 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:38:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:38:01,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783515531] [2020-07-20 06:38:01,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:38:01,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:38:01,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880867873] [2020-07-20 06:38:01,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:38:01,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:38:01,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:38:01,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:38:01,589 INFO L87 Difference]: Start difference. First operand 1506 states. Second operand 5 states. [2020-07-20 06:38:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:38:18,570 INFO L93 Difference]: Finished difference Result 4460 states and 8053 transitions. [2020-07-20 06:38:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:38:18,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-07-20 06:38:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:38:18,642 INFO L225 Difference]: With dead ends: 4460 [2020-07-20 06:38:18,643 INFO L226 Difference]: Without dead ends: 2963 [2020-07-20 06:38:18,657 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 [2020-07-20 06:38:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-07-20 06:38:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2906. [2020-07-20 06:38:18,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2906 states. [2020-07-20 06:38:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4772 transitions. [2020-07-20 06:38:18,909 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4772 transitions. Word has length 493 [2020-07-20 06:38:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:38:18,914 INFO L479 AbstractCegarLoop]: Abstraction has 2906 states and 4772 transitions. [2020-07-20 06:38:18,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:38:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4772 transitions. [2020-07-20 06:38:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-07-20 06:38:18,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:38:18,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:38:18,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:38:18,932 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:38:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:38:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1236769392, now seen corresponding path program 1 times [2020-07-20 06:38:18,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:38:18,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689217315] [2020-07-20 06:38:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:38:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:20,717 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:38:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:38:21,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689217315] [2020-07-20 06:38:21,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:38:21,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:38:21,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832154418] [2020-07-20 06:38:21,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:38:21,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:38:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:38:21,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:38:21,494 INFO L87 Difference]: Start difference. First operand 2906 states and 4772 transitions. Second operand 4 states. [2020-07-20 06:38:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:38:41,479 INFO L93 Difference]: Finished difference Result 8439 states and 13819 transitions. [2020-07-20 06:38:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:38:41,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 495 [2020-07-20 06:38:41,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:38:41,511 INFO L225 Difference]: With dead ends: 8439 [2020-07-20 06:38:41,512 INFO L226 Difference]: Without dead ends: 5747 [2020-07-20 06:38:41,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:38:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5747 states. [2020-07-20 06:38:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5747 to 5692. [2020-07-20 06:38:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5692 states. [2020-07-20 06:38:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5692 states to 5692 states and 9324 transitions. [2020-07-20 06:38:41,738 INFO L78 Accepts]: Start accepts. Automaton has 5692 states and 9324 transitions. Word has length 495 [2020-07-20 06:38:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:38:41,740 INFO L479 AbstractCegarLoop]: Abstraction has 5692 states and 9324 transitions. [2020-07-20 06:38:41,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:38:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5692 states and 9324 transitions. [2020-07-20 06:38:41,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-07-20 06:38:41,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:38:41,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:38:41,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:38:41,767 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:38:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:38:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1780546784, now seen corresponding path program 1 times [2020-07-20 06:38:41,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:38:41,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239675184] [2020-07-20 06:38:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:38:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:42,954 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:38:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:38:43,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239675184] [2020-07-20 06:38:43,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:38:43,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:38:43,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014496170] [2020-07-20 06:38:43,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:38:43,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:38:43,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:38:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:38:43,163 INFO L87 Difference]: Start difference. First operand 5692 states and 9324 transitions. Second operand 4 states. [2020-07-20 06:39:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:39:02,623 INFO L93 Difference]: Finished difference Result 16979 states and 27804 transitions. [2020-07-20 06:39:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:39:02,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 496 [2020-07-20 06:39:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:39:02,683 INFO L225 Difference]: With dead ends: 16979 [2020-07-20 06:39:02,684 INFO L226 Difference]: Without dead ends: 11339 [2020-07-20 06:39:02,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11339 states. [2020-07-20 06:39:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11339 to 5739. [2020-07-20 06:39:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5739 states. [2020-07-20 06:39:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 9398 transitions. [2020-07-20 06:39:02,972 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 9398 transitions. Word has length 496 [2020-07-20 06:39:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:39:02,973 INFO L479 AbstractCegarLoop]: Abstraction has 5739 states and 9398 transitions. [2020-07-20 06:39:02,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:39:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 9398 transitions. [2020-07-20 06:39:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-07-20 06:39:02,993 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:39:02,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:39:02,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:39:02,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:39:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:39:02,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1430972427, now seen corresponding path program 1 times [2020-07-20 06:39:02,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:39:02,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188146021] [2020-07-20 06:39:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:39:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:04,274 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:39:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:39:04,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188146021] [2020-07-20 06:39:04,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:39:04,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:39:04,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577039705] [2020-07-20 06:39:04,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:39:04,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:39:04,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:39:04,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:04,571 INFO L87 Difference]: Start difference. First operand 5739 states and 9398 transitions. Second operand 4 states. [2020-07-20 06:39:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:39:23,853 INFO L93 Difference]: Finished difference Result 16541 states and 26991 transitions. [2020-07-20 06:39:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:39:23,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 497 [2020-07-20 06:39:23,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:39:23,894 INFO L225 Difference]: With dead ends: 16541 [2020-07-20 06:39:23,894 INFO L226 Difference]: Without dead ends: 11201 [2020-07-20 06:39:23,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:23,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11201 states. [2020-07-20 06:39:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11201 to 11148. [2020-07-20 06:39:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11148 states. [2020-07-20 06:39:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11148 states to 11148 states and 18172 transitions. [2020-07-20 06:39:24,310 INFO L78 Accepts]: Start accepts. Automaton has 11148 states and 18172 transitions. Word has length 497 [2020-07-20 06:39:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:39:24,311 INFO L479 AbstractCegarLoop]: Abstraction has 11148 states and 18172 transitions. [2020-07-20 06:39:24,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:39:24,311 INFO L276 IsEmpty]: Start isEmpty. Operand 11148 states and 18172 transitions. [2020-07-20 06:39:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-07-20 06:39:24,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:39:24,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:39:24,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 06:39:24,347 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:39:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:39:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1060694512, now seen corresponding path program 1 times [2020-07-20 06:39:24,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:39:24,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891534122] [2020-07-20 06:39:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:39:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:25,285 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:39:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:39:25,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891534122] [2020-07-20 06:39:25,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:39:25,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:39:25,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869955949] [2020-07-20 06:39:25,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:39:25,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:39:25,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:39:25,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:25,581 INFO L87 Difference]: Start difference. First operand 11148 states and 18172 transitions. Second operand 4 states. [2020-07-20 06:39:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:39:46,072 INFO L93 Difference]: Finished difference Result 33188 states and 54071 transitions. [2020-07-20 06:39:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:39:46,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 497 [2020-07-20 06:39:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:39:46,119 INFO L225 Difference]: With dead ends: 33188 [2020-07-20 06:39:46,119 INFO L226 Difference]: Without dead ends: 22184 [2020-07-20 06:39:46,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22184 states. [2020-07-20 06:39:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22184 to 11246. [2020-07-20 06:39:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11246 states. [2020-07-20 06:39:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11246 states to 11246 states and 18323 transitions. [2020-07-20 06:39:46,582 INFO L78 Accepts]: Start accepts. Automaton has 11246 states and 18323 transitions. Word has length 497 [2020-07-20 06:39:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:39:46,582 INFO L479 AbstractCegarLoop]: Abstraction has 11246 states and 18323 transitions. [2020-07-20 06:39:46,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:39:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 11246 states and 18323 transitions. [2020-07-20 06:39:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-07-20 06:39:46,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:39:46,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:39:46,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 06:39:46,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:39:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:39:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2017069745, now seen corresponding path program 1 times [2020-07-20 06:39:46,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:39:46,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248690292] [2020-07-20 06:39:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:39:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:47,558 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:39:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:39:47,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248690292] [2020-07-20 06:39:47,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:39:47,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:39:47,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382616523] [2020-07-20 06:39:47,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:39:47,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:39:47,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:39:47,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:47,800 INFO L87 Difference]: Start difference. First operand 11246 states and 18323 transitions. Second operand 4 states. [2020-07-20 06:40:08,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:40:08,656 INFO L93 Difference]: Finished difference Result 33323 states and 54252 transitions. [2020-07-20 06:40:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:40:08,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 498 [2020-07-20 06:40:08,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:40:08,703 INFO L225 Difference]: With dead ends: 33323 [2020-07-20 06:40:08,704 INFO L226 Difference]: Without dead ends: 22301 [2020-07-20 06:40:08,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:40:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22301 states. [2020-07-20 06:40:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22301 to 11363. [2020-07-20 06:40:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11363 states. [2020-07-20 06:40:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 18469 transitions. [2020-07-20 06:40:09,210 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 18469 transitions. Word has length 498 [2020-07-20 06:40:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:40:09,210 INFO L479 AbstractCegarLoop]: Abstraction has 11363 states and 18469 transitions. [2020-07-20 06:40:09,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:40:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 18469 transitions. [2020-07-20 06:40:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-07-20 06:40:09,229 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:40:09,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:40:09,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 06:40:09,230 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:40:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:40:09,230 INFO L82 PathProgramCache]: Analyzing trace with hash -199707613, now seen corresponding path program 1 times [2020-07-20 06:40:09,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:40:09,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431060448] [2020-07-20 06:40:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:40:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:10,668 WARN L193 SmtUtils]: Spent 973.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:40:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:40:11,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431060448] [2020-07-20 06:40:11,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:40:11,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:40:11,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8318595] [2020-07-20 06:40:11,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:40:11,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:40:11,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:40:11,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:40:11,052 INFO L87 Difference]: Start difference. First operand 11363 states and 18469 transitions. Second operand 4 states. [2020-07-20 06:40:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:40:25,301 INFO L93 Difference]: Finished difference Result 21947 states and 35242 transitions. [2020-07-20 06:40:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:40:25,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 499 [2020-07-20 06:40:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:40:25,327 INFO L225 Difference]: With dead ends: 21947 [2020-07-20 06:40:25,327 INFO L226 Difference]: Without dead ends: 15101 [2020-07-20 06:40:25,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:40:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15101 states. [2020-07-20 06:40:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15101 to 12963. [2020-07-20 06:40:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12963 states. [2020-07-20 06:40:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12963 states to 12963 states and 21117 transitions. [2020-07-20 06:40:25,944 INFO L78 Accepts]: Start accepts. Automaton has 12963 states and 21117 transitions. Word has length 499 [2020-07-20 06:40:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:40:25,945 INFO L479 AbstractCegarLoop]: Abstraction has 12963 states and 21117 transitions. [2020-07-20 06:40:25,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:40:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12963 states and 21117 transitions. [2020-07-20 06:40:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-07-20 06:40:25,962 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:40:25,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:40:25,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 06:40:25,963 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:40:25,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:40:25,963 INFO L82 PathProgramCache]: Analyzing trace with hash 518385210, now seen corresponding path program 1 times [2020-07-20 06:40:25,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:40:25,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759598833] [2020-07-20 06:40:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:40:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:27,135 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:40:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:40:27,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759598833] [2020-07-20 06:40:27,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:40:27,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:40:27,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540518147] [2020-07-20 06:40:27,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:40:27,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:40:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:40:27,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:40:27,610 INFO L87 Difference]: Start difference. First operand 12963 states and 21117 transitions. Second operand 4 states. [2020-07-20 06:40:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:40:49,209 INFO L93 Difference]: Finished difference Result 37125 states and 60352 transitions. [2020-07-20 06:40:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:40:49,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 499 [2020-07-20 06:40:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:40:49,256 INFO L225 Difference]: With dead ends: 37125 [2020-07-20 06:40:49,256 INFO L226 Difference]: Without dead ends: 25131 [2020-07-20 06:40:49,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:40:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25131 states. [2020-07-20 06:40:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25131 to 25080. [2020-07-20 06:40:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25080 states. [2020-07-20 06:40:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25080 states to 25080 states and 40686 transitions. [2020-07-20 06:40:51,225 INFO L78 Accepts]: Start accepts. Automaton has 25080 states and 40686 transitions. Word has length 499 [2020-07-20 06:40:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:40:51,226 INFO L479 AbstractCegarLoop]: Abstraction has 25080 states and 40686 transitions. [2020-07-20 06:40:51,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:40:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 25080 states and 40686 transitions. [2020-07-20 06:40:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-07-20 06:40:51,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:40:51,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:40:51,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 06:40:51,253 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:40:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:40:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2080091133, now seen corresponding path program 1 times [2020-07-20 06:40:51,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:40:51,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598213001] [2020-07-20 06:40:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:40:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:53,141 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:40:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:40:53,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598213001] [2020-07-20 06:40:53,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:40:53,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:40:53,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800572160] [2020-07-20 06:40:53,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:40:53,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:40:53,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:40:53,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:40:53,326 INFO L87 Difference]: Start difference. First operand 25080 states and 40686 transitions. Second operand 5 states. [2020-07-20 06:41:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:41:13,655 INFO L93 Difference]: Finished difference Result 57964 states and 94551 transitions. [2020-07-20 06:41:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:41:13,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 499 [2020-07-20 06:41:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:41:13,873 INFO L225 Difference]: With dead ends: 57964 [2020-07-20 06:41:13,873 INFO L226 Difference]: Without dead ends: 29594 [2020-07-20 06:41:13,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:41:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29594 states. [2020-07-20 06:41:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29594 to 29534. [2020-07-20 06:41:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29534 states. [2020-07-20 06:41:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29534 states to 29534 states and 48033 transitions. [2020-07-20 06:41:14,941 INFO L78 Accepts]: Start accepts. Automaton has 29534 states and 48033 transitions. Word has length 499 [2020-07-20 06:41:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:41:14,941 INFO L479 AbstractCegarLoop]: Abstraction has 29534 states and 48033 transitions. [2020-07-20 06:41:14,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:41:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 29534 states and 48033 transitions. [2020-07-20 06:41:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-07-20 06:41:14,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:41:14,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:41:14,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 06:41:14,977 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:41:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:41:14,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1245686880, now seen corresponding path program 1 times [2020-07-20 06:41:14,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:41:14,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104699575] [2020-07-20 06:41:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:41:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:41:16,160 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:41:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:41:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:41:16,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104699575] [2020-07-20 06:41:16,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:41:16,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:41:16,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765456768] [2020-07-20 06:41:16,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:41:16,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:41:16,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:41:16,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:41:16,656 INFO L87 Difference]: Start difference. First operand 29534 states and 48033 transitions. Second operand 4 states. [2020-07-20 06:41:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:41:41,685 INFO L93 Difference]: Finished difference Result 86594 states and 140872 transitions. [2020-07-20 06:41:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:41:41,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 501 [2020-07-20 06:41:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:41:41,765 INFO L225 Difference]: With dead ends: 86594 [2020-07-20 06:41:41,766 INFO L226 Difference]: Without dead ends: 58080 [2020-07-20 06:41:41,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:41:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58080 states. [2020-07-20 06:41:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58080 to 58039. [2020-07-20 06:41:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58039 states. [2020-07-20 06:41:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58039 states to 58039 states and 94066 transitions. [2020-07-20 06:41:44,174 INFO L78 Accepts]: Start accepts. Automaton has 58039 states and 94066 transitions. Word has length 501 [2020-07-20 06:41:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:41:44,175 INFO L479 AbstractCegarLoop]: Abstraction has 58039 states and 94066 transitions. [2020-07-20 06:41:44,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:41:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 58039 states and 94066 transitions. [2020-07-20 06:41:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-07-20 06:41:44,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:41:44,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:41:44,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 06:41:44,236 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:41:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:41:44,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1992437422, now seen corresponding path program 1 times [2020-07-20 06:41:44,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:41:44,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961201273] [2020-07-20 06:41:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:41:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:41:45,339 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:41:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:41:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:41:45,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961201273] [2020-07-20 06:41:45,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:41:45,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:41:45,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863204141] [2020-07-20 06:41:45,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:41:45,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:41:45,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:41:45,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:41:45,932 INFO L87 Difference]: Start difference. First operand 58039 states and 94066 transitions. Second operand 4 states. [2020-07-20 06:42:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:42:04,451 INFO L93 Difference]: Finished difference Result 107199 states and 172119 transitions. [2020-07-20 06:42:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:42:04,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 501 [2020-07-20 06:42:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:42:04,543 INFO L225 Difference]: With dead ends: 107199 [2020-07-20 06:42:04,543 INFO L226 Difference]: Without dead ends: 76137 [2020-07-20 06:42:04,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:42:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76137 states. [2020-07-20 06:42:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76137 to 69303. [2020-07-20 06:42:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69303 states. [2020-07-20 06:42:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69303 states to 69303 states and 112546 transitions. [2020-07-20 06:42:09,525 INFO L78 Accepts]: Start accepts. Automaton has 69303 states and 112546 transitions. Word has length 501 [2020-07-20 06:42:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:42:09,525 INFO L479 AbstractCegarLoop]: Abstraction has 69303 states and 112546 transitions. [2020-07-20 06:42:09,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:42:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 69303 states and 112546 transitions. [2020-07-20 06:42:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-07-20 06:42:09,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:42:09,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:42:09,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 06:42:09,567 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:42:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:42:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -429274846, now seen corresponding path program 1 times [2020-07-20 06:42:09,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:42:09,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796875726] [2020-07-20 06:42:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:42:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:42:11,017 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:42:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:42:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:42:11,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796875726] [2020-07-20 06:42:11,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:42:11,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:42:11,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479423804] [2020-07-20 06:42:11,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 06:42:11,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:42:11,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 06:42:11,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:42:11,365 INFO L87 Difference]: Start difference. First operand 69303 states and 112546 transitions. Second operand 7 states. [2020-07-20 06:42:12,207 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-20 06:42:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:42:31,525 INFO L93 Difference]: Finished difference Result 176837 states and 285235 transitions. [2020-07-20 06:42:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:42:31,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 502 [2020-07-20 06:42:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:42:31,724 INFO L225 Difference]: With dead ends: 176837 [2020-07-20 06:42:31,724 INFO L226 Difference]: Without dead ends: 131967 [2020-07-20 06:42:31,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-20 06:42:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131967 states. [2020-07-20 06:42:39,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131967 to 131751. [2020-07-20 06:42:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131751 states. [2020-07-20 06:42:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131751 states to 131751 states and 213210 transitions. [2020-07-20 06:42:39,967 INFO L78 Accepts]: Start accepts. Automaton has 131751 states and 213210 transitions. Word has length 502 [2020-07-20 06:42:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:42:39,967 INFO L479 AbstractCegarLoop]: Abstraction has 131751 states and 213210 transitions. [2020-07-20 06:42:39,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 06:42:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 131751 states and 213210 transitions. [2020-07-20 06:42:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-07-20 06:42:40,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:42:40,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:42:40,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 06:42:40,028 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:42:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:42:40,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1111657017, now seen corresponding path program 1 times [2020-07-20 06:42:40,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:42:40,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876571059] [2020-07-20 06:42:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:42:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:42:41,906 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:42:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:42:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:42:42,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876571059] [2020-07-20 06:42:42,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:42:42,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:42:42,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15019323] [2020-07-20 06:42:42,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:42:42,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:42:42,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:42:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:42:42,181 INFO L87 Difference]: Start difference. First operand 131751 states and 213210 transitions. Second operand 5 states. [2020-07-20 06:43:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:43:15,174 INFO L93 Difference]: Finished difference Result 388752 states and 629327 transitions. [2020-07-20 06:43:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:43:15,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 502 [2020-07-20 06:43:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:43:15,494 INFO L225 Difference]: With dead ends: 388752 [2020-07-20 06:43:15,494 INFO L226 Difference]: Without dead ends: 258437 [2020-07-20 06:43:15,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:43:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258437 states. [2020-07-20 06:43:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258437 to 258389. [2020-07-20 06:43:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258389 states. [2020-07-20 06:43:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258389 states to 258389 states and 417068 transitions. [2020-07-20 06:43:36,164 INFO L78 Accepts]: Start accepts. Automaton has 258389 states and 417068 transitions. Word has length 502 [2020-07-20 06:43:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:43:36,164 INFO L479 AbstractCegarLoop]: Abstraction has 258389 states and 417068 transitions. [2020-07-20 06:43:36,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:43:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 258389 states and 417068 transitions. [2020-07-20 06:43:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-07-20 06:43:36,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:43:36,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:43:36,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 06:43:36,287 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:43:36,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:43:36,287 INFO L82 PathProgramCache]: Analyzing trace with hash -158101499, now seen corresponding path program 1 times [2020-07-20 06:43:36,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:43:36,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019256896] [2020-07-20 06:43:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:43:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:43:37,715 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:43:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:43:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:43:37,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019256896] [2020-07-20 06:43:37,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:43:37,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:43:37,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104861989] [2020-07-20 06:43:37,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:43:37,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:43:37,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:43:37,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:43:37,983 INFO L87 Difference]: Start difference. First operand 258389 states and 417068 transitions. Second operand 4 states. [2020-07-20 06:44:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:44:34,275 INFO L93 Difference]: Finished difference Result 762453 states and 1229673 transitions. [2020-07-20 06:44:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:44:34,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 503 [2020-07-20 06:44:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:44:35,092 INFO L225 Difference]: With dead ends: 762453 [2020-07-20 06:44:35,092 INFO L226 Difference]: Without dead ends: 508743 [2020-07-20 06:44:35,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:44:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508743 states. [2020-07-20 06:45:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508743 to 508704. [2020-07-20 06:45:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508704 states. [2020-07-20 06:45:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508704 states to 508704 states and 818220 transitions. [2020-07-20 06:45:18,644 INFO L78 Accepts]: Start accepts. Automaton has 508704 states and 818220 transitions. Word has length 503 [2020-07-20 06:45:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:45:18,645 INFO L479 AbstractCegarLoop]: Abstraction has 508704 states and 818220 transitions. [2020-07-20 06:45:18,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:45:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 508704 states and 818220 transitions. [2020-07-20 06:45:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-07-20 06:45:18,884 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:45:18,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:45:18,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 06:45:18,885 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:45:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:45:18,886 INFO L82 PathProgramCache]: Analyzing trace with hash -898375032, now seen corresponding path program 1 times [2020-07-20 06:45:18,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:45:18,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20861936] [2020-07-20 06:45:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:45:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:45:20,867 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:45:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:45:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:45:21,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20861936] [2020-07-20 06:45:21,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:45:21,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:45:21,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304337259] [2020-07-20 06:45:21,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:45:21,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:45:21,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:45:21,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:45:21,056 INFO L87 Difference]: Start difference. First operand 508704 states and 818220 transitions. Second operand 5 states. [2020-07-20 06:46:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:46:32,164 INFO L93 Difference]: Finished difference Result 1110281 states and 1788754 transitions. [2020-07-20 06:46:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:46:32,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 503 [2020-07-20 06:46:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:46:32,945 INFO L225 Difference]: With dead ends: 1110281 [2020-07-20 06:46:32,945 INFO L226 Difference]: Without dead ends: 558023 [2020-07-20 06:46:33,751 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 [2020-07-20 06:46:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558023 states. [2020-07-20 06:47:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558023 to 557899. [2020-07-20 06:47:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557899 states. [2020-07-20 06:47:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557899 states to 557899 states and 896159 transitions. [2020-07-20 06:47:24,967 INFO L78 Accepts]: Start accepts. Automaton has 557899 states and 896159 transitions. Word has length 503 [2020-07-20 06:47:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:47:24,967 INFO L479 AbstractCegarLoop]: Abstraction has 557899 states and 896159 transitions. [2020-07-20 06:47:24,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:47:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 557899 states and 896159 transitions. [2020-07-20 06:47:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-07-20 06:47:25,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:47:25,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:47:25,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 06:47:25,281 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:47:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:47:25,281 INFO L82 PathProgramCache]: Analyzing trace with hash -568171736, now seen corresponding path program 1 times [2020-07-20 06:47:25,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:47:25,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920598321] [2020-07-20 06:47:25,282 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aefc99f [2020-07-20 06:47:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:47:27,462 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-07-20 06:47:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:47:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:47:27,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920598321] [2020-07-20 06:47:27,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:47:27,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:47:27,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974031540] [2020-07-20 06:47:27,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:47:27,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:47:27,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:47:27,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:47:27,696 INFO L87 Difference]: Start difference. First operand 557899 states and 896159 transitions. Second operand 4 states. [2020-07-20 06:49:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:49:15,983 INFO L93 Difference]: Finished difference Result 1635464 states and 2623418 transitions. [2020-07-20 06:49:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:49:15,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 504 [2020-07-20 06:49:15,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:49:17,767 INFO L225 Difference]: With dead ends: 1635464 [2020-07-20 06:49:17,767 INFO L226 Difference]: Without dead ends: 1092914 [2020-07-20 06:49:18,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:49:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092914 states.