/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 NUM_VARIABLES --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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 02:10:24,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 02:10:24,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 02:10:24,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 02:10:24,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 02:10:24,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 02:10:24,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 02:10:24,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 02:10:24,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 02:10:24,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 02:10:24,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 02:10:24,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 02:10:24,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 02:10:24,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 02:10:24,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 02:10:24,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 02:10:24,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 02:10:24,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 02:10:24,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 02:10:24,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 02:10:24,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 02:10:24,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 02:10:24,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 02:10:24,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 02:10:24,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 02:10:24,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 02:10:24,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 02:10:24,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 02:10:24,510 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 02:10:24,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 02:10:24,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 02:10:24,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 02:10:24,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 02:10:24,549 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 02:10:24,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 02:10:24,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 02:10:24,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 02:10:24,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 02:10:24,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 02:10:24,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 02:10:24,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 02:10:24,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 02:10:24,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 02:10:24,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 02:10:24,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 02:10:24,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 02:10:24,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 02:10:24,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 02:10:24,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 02:10:24,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 02:10:24,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 02:10:24,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 02:10:24,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 02:10:24,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 02:10:24,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 02:10:24,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 02:10:24,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 02:10:24,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 02:10:24,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 02:10:24,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 02:10:24,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 02:10:24,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 02:10:24,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 02:10:24,873 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 02:10:24,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-20 02:10:24,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab8b1758/8be2f12606164885b15e1de178f063b0/FLAGf7a97be3e [2020-07-20 02:10:25,521 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 02:10:25,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-20 02:10:25,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab8b1758/8be2f12606164885b15e1de178f063b0/FLAGf7a97be3e [2020-07-20 02:10:25,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab8b1758/8be2f12606164885b15e1de178f063b0 [2020-07-20 02:10:25,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 02:10:25,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 02:10:25,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 02:10:25,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 02:10:25,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 02:10:25,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:10:25" (1/1) ... [2020-07-20 02:10:25,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371044d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:25, skipping insertion in model container [2020-07-20 02:10:25,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:10:25" (1/1) ... [2020-07-20 02:10:25,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 02:10:25,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 02:10:26,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:10:26,954 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 02:10:27,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:10:27,445 INFO L208 MainTranslator]: Completed translation [2020-07-20 02:10:27,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27 WrapperNode [2020-07-20 02:10:27,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 02:10:27,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 02:10:27,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 02:10:27,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 02:10:27,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (1/1) ... [2020-07-20 02:10:27,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (1/1) ... [2020-07-20 02:10:27,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (1/1) ... [2020-07-20 02:10:27,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (1/1) ... [2020-07-20 02:10:27,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (1/1) ... [2020-07-20 02:10:27,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (1/1) ... [2020-07-20 02:10:27,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (1/1) ... [2020-07-20 02:10:27,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 02:10:27,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 02:10:27,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 02:10:27,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 02:10:27,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (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 02:10:27,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 02:10:27,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 02:10:27,695 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 02:10:27,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 02:10:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 02:10:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 02:10:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 02:10:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 02:10:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 02:10:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 02:10:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 02:10:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 02:10:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 02:10:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 02:10:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 02:10:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 02:10:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 02:10:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 02:10:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 02:10:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 02:10:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 02:10:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 02:10:30,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 02:10:30,178 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 02:10:30,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:10:30 BoogieIcfgContainer [2020-07-20 02:10:30,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 02:10:30,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 02:10:30,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 02:10:30,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 02:10:30,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:10:25" (1/3) ... [2020-07-20 02:10:30,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ad86a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:10:30, skipping insertion in model container [2020-07-20 02:10:30,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:27" (2/3) ... [2020-07-20 02:10:30,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ad86a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:10:30, skipping insertion in model container [2020-07-20 02:10:30,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:10:30" (3/3) ... [2020-07-20 02:10:30,196 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-20 02:10:30,206 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 02:10:30,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 02:10:30,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 02:10:30,251 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 02:10:30,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 02:10:30,252 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 02:10:30,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 02:10:30,252 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 02:10:30,252 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 02:10:30,252 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 02:10:30,252 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 02:10:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2020-07-20 02:10:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 02:10:30,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:30,317 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] [2020-07-20 02:10:30,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:30,324 INFO L82 PathProgramCache]: Analyzing trace with hash 578636414, now seen corresponding path program 1 times [2020-07-20 02:10:30,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:30,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40948397] [2020-07-20 02:10:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:10:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:31,854 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:10:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:32,040 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 02:10:32,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40948397] [2020-07-20 02:10:32,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:32,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:32,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830759127] [2020-07-20 02:10:32,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:32,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:32,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:32,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:32,060 INFO L87 Difference]: Start difference. First operand 796 states. Second operand 4 states. [2020-07-20 02:10:32,532 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 02:10:37,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:37,261 INFO L93 Difference]: Finished difference Result 1515 states and 2659 transitions. [2020-07-20 02:10:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:10:37,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 02:10:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:37,302 INFO L225 Difference]: With dead ends: 1515 [2020-07-20 02:10:37,302 INFO L226 Difference]: Without dead ends: 1299 [2020-07-20 02:10:37,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:10:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-07-20 02:10:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1297. [2020-07-20 02:10:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2020-07-20 02:10:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2028 transitions. [2020-07-20 02:10:37,461 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2028 transitions. Word has length 318 [2020-07-20 02:10:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:37,466 INFO L479 AbstractCegarLoop]: Abstraction has 1297 states and 2028 transitions. [2020-07-20 02:10:37,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:10:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2028 transitions. [2020-07-20 02:10:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 02:10:37,479 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:37,480 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] [2020-07-20 02:10:37,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 02:10:37,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1367796252, now seen corresponding path program 1 times [2020-07-20 02:10:37,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:37,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309083263] [2020-07-20 02:10:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:10:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:38,327 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:10:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:38,485 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 02:10:38,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309083263] [2020-07-20 02:10:38,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:38,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:38,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736905347] [2020-07-20 02:10:38,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:38,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:38,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:38,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:38,489 INFO L87 Difference]: Start difference. First operand 1297 states and 2028 transitions. Second operand 4 states. [2020-07-20 02:10:38,893 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 02:10:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:43,017 INFO L93 Difference]: Finished difference Result 2671 states and 4201 transitions. [2020-07-20 02:10:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:10:43,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 02:10:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:43,036 INFO L225 Difference]: With dead ends: 2671 [2020-07-20 02:10:43,037 INFO L226 Difference]: Without dead ends: 2289 [2020-07-20 02:10:43,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:10:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-07-20 02:10:43,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2020-07-20 02:10:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-07-20 02:10:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3564 transitions. [2020-07-20 02:10:43,162 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3564 transitions. Word has length 318 [2020-07-20 02:10:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:43,164 INFO L479 AbstractCegarLoop]: Abstraction has 2287 states and 3564 transitions. [2020-07-20 02:10:43,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:10:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3564 transitions. [2020-07-20 02:10:43,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 02:10:43,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:43,180 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] [2020-07-20 02:10:43,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 02:10:43,181 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:43,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1797025293, now seen corresponding path program 1 times [2020-07-20 02:10:43,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:43,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677664965] [2020-07-20 02:10:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:10:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:44,366 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:10:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:44,636 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 02:10:44,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677664965] [2020-07-20 02:10:44,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:44,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:44,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904051524] [2020-07-20 02:10:44,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:44,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:44,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:44,650 INFO L87 Difference]: Start difference. First operand 2287 states and 3564 transitions. Second operand 4 states. [2020-07-20 02:10:45,083 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 02:10:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:49,033 INFO L93 Difference]: Finished difference Result 4943 states and 7762 transitions. [2020-07-20 02:10:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:10:49,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 02:10:49,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:49,056 INFO L225 Difference]: With dead ends: 4943 [2020-07-20 02:10:49,056 INFO L226 Difference]: Without dead ends: 4229 [2020-07-20 02:10:49,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:10:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2020-07-20 02:10:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 4227. [2020-07-20 02:10:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-07-20 02:10:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 6568 transitions. [2020-07-20 02:10:49,181 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 6568 transitions. Word has length 318 [2020-07-20 02:10:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:49,182 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 6568 transitions. [2020-07-20 02:10:49,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:10:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 6568 transitions. [2020-07-20 02:10:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 02:10:49,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:49,192 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] [2020-07-20 02:10:49,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 02:10:49,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:49,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1914723175, now seen corresponding path program 1 times [2020-07-20 02:10:49,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:49,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158609230] [2020-07-20 02:10:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:10:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:49,923 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:10:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:10:50,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158609230] [2020-07-20 02:10:50,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:50,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:50,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774084584] [2020-07-20 02:10:50,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:50,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:50,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:50,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:50,178 INFO L87 Difference]: Start difference. First operand 4227 states and 6568 transitions. Second operand 4 states. [2020-07-20 02:10:50,769 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 02:10:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:54,716 INFO L93 Difference]: Finished difference Result 9359 states and 14670 transitions. [2020-07-20 02:10:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:10:54,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 02:10:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:54,752 INFO L225 Difference]: With dead ends: 9359 [2020-07-20 02:10:54,752 INFO L226 Difference]: Without dead ends: 8029 [2020-07-20 02:10:54,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:10:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2020-07-20 02:10:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 8027. [2020-07-20 02:10:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8027 states. [2020-07-20 02:10:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 12440 transitions. [2020-07-20 02:10:55,000 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 12440 transitions. Word has length 318 [2020-07-20 02:10:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:55,002 INFO L479 AbstractCegarLoop]: Abstraction has 8027 states and 12440 transitions. [2020-07-20 02:10:55,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:10:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 12440 transitions. [2020-07-20 02:10:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 02:10:55,033 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:55,034 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] [2020-07-20 02:10:55,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 02:10:55,035 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:55,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:55,036 INFO L82 PathProgramCache]: Analyzing trace with hash 769893352, now seen corresponding path program 1 times [2020-07-20 02:10:55,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:55,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198852228] [2020-07-20 02:10:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:10:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:56,036 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:10:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:56,209 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 02:10:56,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198852228] [2020-07-20 02:10:56,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:56,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:10:56,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396184526] [2020-07-20 02:10:56,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:10:56,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:56,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:10:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:10:56,212 INFO L87 Difference]: Start difference. First operand 8027 states and 12440 transitions. Second operand 5 states. [2020-07-20 02:11:03,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:03,009 INFO L93 Difference]: Finished difference Result 23754 states and 36777 transitions. [2020-07-20 02:11:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:11:03,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-07-20 02:11:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:03,069 INFO L225 Difference]: With dead ends: 23754 [2020-07-20 02:11:03,069 INFO L226 Difference]: Without dead ends: 15742 [2020-07-20 02:11:03,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:11:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15742 states. [2020-07-20 02:11:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15742 to 15740. [2020-07-20 02:11:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15740 states. [2020-07-20 02:11:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15740 states to 15740 states and 24254 transitions. [2020-07-20 02:11:03,670 INFO L78 Accepts]: Start accepts. Automaton has 15740 states and 24254 transitions. Word has length 318 [2020-07-20 02:11:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:03,671 INFO L479 AbstractCegarLoop]: Abstraction has 15740 states and 24254 transitions. [2020-07-20 02:11:03,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:11:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 15740 states and 24254 transitions. [2020-07-20 02:11:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-07-20 02:11:03,702 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:03,702 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] [2020-07-20 02:11:03,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 02:11:03,702 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:03,703 INFO L82 PathProgramCache]: Analyzing trace with hash -685152901, now seen corresponding path program 1 times [2020-07-20 02:11:03,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:03,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080017208] [2020-07-20 02:11:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:11:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:04,375 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:11:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:04,626 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 02:11:04,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080017208] [2020-07-20 02:11:04,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:04,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:04,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889656815] [2020-07-20 02:11:04,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:04,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:04,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:04,633 INFO L87 Difference]: Start difference. First operand 15740 states and 24254 transitions. Second operand 4 states. [2020-07-20 02:11:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:12,535 INFO L93 Difference]: Finished difference Result 46481 states and 71518 transitions. [2020-07-20 02:11:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:12,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-07-20 02:11:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:12,602 INFO L225 Difference]: With dead ends: 46481 [2020-07-20 02:11:12,602 INFO L226 Difference]: Without dead ends: 30870 [2020-07-20 02:11:12,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30870 states. [2020-07-20 02:11:14,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30870 to 30868. [2020-07-20 02:11:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30868 states. [2020-07-20 02:11:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30868 states to 30868 states and 47285 transitions. [2020-07-20 02:11:14,217 INFO L78 Accepts]: Start accepts. Automaton has 30868 states and 47285 transitions. Word has length 320 [2020-07-20 02:11:14,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:14,217 INFO L479 AbstractCegarLoop]: Abstraction has 30868 states and 47285 transitions. [2020-07-20 02:11:14,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:14,217 INFO L276 IsEmpty]: Start isEmpty. Operand 30868 states and 47285 transitions. [2020-07-20 02:11:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-07-20 02:11:14,259 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:14,259 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] [2020-07-20 02:11:14,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 02:11:14,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:14,260 INFO L82 PathProgramCache]: Analyzing trace with hash -810813248, now seen corresponding path program 1 times [2020-07-20 02:11:14,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:14,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149456443] [2020-07-20 02:11:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:11:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:14,748 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:11:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:14,849 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 02:11:14,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149456443] [2020-07-20 02:11:14,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:14,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:14,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876431579] [2020-07-20 02:11:14,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:14,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:14,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:14,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:14,854 INFO L87 Difference]: Start difference. First operand 30868 states and 47285 transitions. Second operand 4 states. [2020-07-20 02:11:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:23,484 INFO L93 Difference]: Finished difference Result 92529 states and 141731 transitions. [2020-07-20 02:11:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:23,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-07-20 02:11:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:23,589 INFO L225 Difference]: With dead ends: 92529 [2020-07-20 02:11:23,590 INFO L226 Difference]: Without dead ends: 61703 [2020-07-20 02:11:23,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61703 states. [2020-07-20 02:11:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61703 to 30887. [2020-07-20 02:11:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30887 states. [2020-07-20 02:11:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30887 states to 30887 states and 47313 transitions. [2020-07-20 02:11:24,586 INFO L78 Accepts]: Start accepts. Automaton has 30887 states and 47313 transitions. Word has length 320 [2020-07-20 02:11:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:24,587 INFO L479 AbstractCegarLoop]: Abstraction has 30887 states and 47313 transitions. [2020-07-20 02:11:24,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 30887 states and 47313 transitions. [2020-07-20 02:11:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-07-20 02:11:24,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:24,616 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] [2020-07-20 02:11:24,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 02:11:24,616 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash -83680004, now seen corresponding path program 1 times [2020-07-20 02:11:24,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:24,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269215478] [2020-07-20 02:11:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:11:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:25,083 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:11:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:25,397 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 02:11:25,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269215478] [2020-07-20 02:11:25,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:25,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:25,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884670885] [2020-07-20 02:11:25,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:25,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:25,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:25,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:25,399 INFO L87 Difference]: Start difference. First operand 30887 states and 47313 transitions. Second operand 4 states. [2020-07-20 02:11:34,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:34,534 INFO L93 Difference]: Finished difference Result 92548 states and 141752 transitions. [2020-07-20 02:11:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:34,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-07-20 02:11:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:34,621 INFO L225 Difference]: With dead ends: 92548 [2020-07-20 02:11:34,621 INFO L226 Difference]: Without dead ends: 61721 [2020-07-20 02:11:34,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61721 states. [2020-07-20 02:11:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61721 to 30905. [2020-07-20 02:11:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30905 states. [2020-07-20 02:11:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30905 states to 30905 states and 47334 transitions. [2020-07-20 02:11:35,728 INFO L78 Accepts]: Start accepts. Automaton has 30905 states and 47334 transitions. Word has length 321 [2020-07-20 02:11:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:35,728 INFO L479 AbstractCegarLoop]: Abstraction has 30905 states and 47334 transitions. [2020-07-20 02:11:35,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 30905 states and 47334 transitions. [2020-07-20 02:11:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-20 02:11:35,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:35,749 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] [2020-07-20 02:11:35,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 02:11:35,749 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:35,750 INFO L82 PathProgramCache]: Analyzing trace with hash 165674294, now seen corresponding path program 1 times [2020-07-20 02:11:35,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:35,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799953982] [2020-07-20 02:11:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:11:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:37,248 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:11:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:37,398 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 02:11:37,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799953982] [2020-07-20 02:11:37,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:37,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:37,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121683483] [2020-07-20 02:11:37,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:37,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:37,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:37,401 INFO L87 Difference]: Start difference. First operand 30905 states and 47334 transitions. Second operand 4 states. [2020-07-20 02:11:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:46,169 INFO L93 Difference]: Finished difference Result 87746 states and 134159 transitions. [2020-07-20 02:11:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:46,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-07-20 02:11:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:46,240 INFO L225 Difference]: With dead ends: 87746 [2020-07-20 02:11:46,241 INFO L226 Difference]: Without dead ends: 57086 [2020-07-20 02:11:46,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57086 states. [2020-07-20 02:11:47,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57086 to 57084. [2020-07-20 02:11:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57084 states. [2020-07-20 02:11:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57084 states to 57084 states and 86830 transitions. [2020-07-20 02:11:48,037 INFO L78 Accepts]: Start accepts. Automaton has 57084 states and 86830 transitions. Word has length 322 [2020-07-20 02:11:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:48,038 INFO L479 AbstractCegarLoop]: Abstraction has 57084 states and 86830 transitions. [2020-07-20 02:11:48,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 57084 states and 86830 transitions. [2020-07-20 02:11:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-20 02:11:48,085 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:48,085 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] [2020-07-20 02:11:48,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 02:11:48,086 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:48,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:48,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1404392915, now seen corresponding path program 1 times [2020-07-20 02:11:48,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:48,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231700527] [2020-07-20 02:11:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:11:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:49,069 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:11:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:49,174 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 02:11:49,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231700527] [2020-07-20 02:11:49,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:49,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:11:49,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666047315] [2020-07-20 02:11:49,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:11:49,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:49,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:11:49,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:11:49,176 INFO L87 Difference]: Start difference. First operand 57084 states and 86830 transitions. Second operand 5 states. [2020-07-20 02:11:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:56,306 INFO L93 Difference]: Finished difference Result 115449 states and 175645 transitions. [2020-07-20 02:11:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:11:56,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-07-20 02:11:56,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:56,373 INFO L225 Difference]: With dead ends: 115449 [2020-07-20 02:11:56,373 INFO L226 Difference]: Without dead ends: 57905 [2020-07-20 02:11:56,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:11:56,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57905 states. [2020-07-20 02:11:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57905 to 57903. [2020-07-20 02:11:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57903 states. [2020-07-20 02:11:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57903 states to 57903 states and 87752 transitions. [2020-07-20 02:11:59,828 INFO L78 Accepts]: Start accepts. Automaton has 57903 states and 87752 transitions. Word has length 322 [2020-07-20 02:11:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:59,829 INFO L479 AbstractCegarLoop]: Abstraction has 57903 states and 87752 transitions. [2020-07-20 02:11:59,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:11:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 57903 states and 87752 transitions. [2020-07-20 02:11:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 02:11:59,880 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:59,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:11:59,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 02:11:59,881 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash -715741738, now seen corresponding path program 1 times [2020-07-20 02:11:59,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:59,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095129265] [2020-07-20 02:11:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:11:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:00,393 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:12:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:00,486 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 02:12:00,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095129265] [2020-07-20 02:12:00,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:00,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:12:00,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47246314] [2020-07-20 02:12:00,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:12:00,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:00,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:12:00,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:00,488 INFO L87 Difference]: Start difference. First operand 57903 states and 87752 transitions. Second operand 4 states. [2020-07-20 02:12:08,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:08,320 INFO L93 Difference]: Finished difference Result 172837 states and 261779 transitions. [2020-07-20 02:12:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:12:08,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 02:12:08,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:08,426 INFO L225 Difference]: With dead ends: 172837 [2020-07-20 02:12:08,426 INFO L226 Difference]: Without dead ends: 115387 [2020-07-20 02:12:08,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115387 states. [2020-07-20 02:12:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115387 to 57961. [2020-07-20 02:12:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57961 states. [2020-07-20 02:12:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57961 states to 57961 states and 87827 transitions. [2020-07-20 02:12:12,741 INFO L78 Accepts]: Start accepts. Automaton has 57961 states and 87827 transitions. Word has length 324 [2020-07-20 02:12:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:12,741 INFO L479 AbstractCegarLoop]: Abstraction has 57961 states and 87827 transitions. [2020-07-20 02:12:12,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:12:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 57961 states and 87827 transitions. [2020-07-20 02:12:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 02:12:12,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:12,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:12:12,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 02:12:12,778 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash 396725324, now seen corresponding path program 1 times [2020-07-20 02:12:12,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:12,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464699029] [2020-07-20 02:12:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:12:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:13,320 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:12:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:13,464 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 02:12:13,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464699029] [2020-07-20 02:12:13,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:13,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:12:13,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536161135] [2020-07-20 02:12:13,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:12:13,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:13,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:12:13,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:13,467 INFO L87 Difference]: Start difference. First operand 57961 states and 87827 transitions. Second operand 4 states. [2020-07-20 02:12:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:25,024 INFO L93 Difference]: Finished difference Result 171218 states and 259030 transitions. [2020-07-20 02:12:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:12:25,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 02:12:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:25,130 INFO L225 Difference]: With dead ends: 171218 [2020-07-20 02:12:25,131 INFO L226 Difference]: Without dead ends: 113542 [2020-07-20 02:12:25,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113542 states. [2020-07-20 02:12:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113542 to 113540. [2020-07-20 02:12:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113540 states. [2020-07-20 02:12:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113540 states to 113540 states and 170856 transitions. [2020-07-20 02:12:31,307 INFO L78 Accepts]: Start accepts. Automaton has 113540 states and 170856 transitions. Word has length 324 [2020-07-20 02:12:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:31,308 INFO L479 AbstractCegarLoop]: Abstraction has 113540 states and 170856 transitions. [2020-07-20 02:12:31,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:12:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 113540 states and 170856 transitions. [2020-07-20 02:12:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 02:12:31,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:31,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:12:31,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 02:12:31,385 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1430415401, now seen corresponding path program 1 times [2020-07-20 02:12:31,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:31,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763307160] [2020-07-20 02:12:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:12:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:32,652 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:12:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:32,766 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 02:12:32,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763307160] [2020-07-20 02:12:32,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:32,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:12:32,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675354701] [2020-07-20 02:12:32,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:12:32,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:32,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:12:32,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:12:32,772 INFO L87 Difference]: Start difference. First operand 113540 states and 170856 transitions. Second operand 5 states. [2020-07-20 02:12:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:45,332 INFO L93 Difference]: Finished difference Result 230524 states and 346909 transitions. [2020-07-20 02:12:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:12:45,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-07-20 02:12:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:45,444 INFO L225 Difference]: With dead ends: 230524 [2020-07-20 02:12:45,444 INFO L226 Difference]: Without dead ends: 115930 [2020-07-20 02:12:45,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:12:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115930 states. [2020-07-20 02:12:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115930 to 115928. [2020-07-20 02:12:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115928 states. [2020-07-20 02:12:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115928 states to 115928 states and 173777 transitions. [2020-07-20 02:12:49,965 INFO L78 Accepts]: Start accepts. Automaton has 115928 states and 173777 transitions. Word has length 324 [2020-07-20 02:12:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:49,965 INFO L479 AbstractCegarLoop]: Abstraction has 115928 states and 173777 transitions. [2020-07-20 02:12:49,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:12:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 115928 states and 173777 transitions. [2020-07-20 02:12:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 02:12:50,038 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:50,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:12:50,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 02:12:50,039 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:50,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1590895399, now seen corresponding path program 1 times [2020-07-20 02:12:50,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:50,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284393390] [2020-07-20 02:12:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:12:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:51,056 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:12:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:51,165 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 02:12:51,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284393390] [2020-07-20 02:12:51,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:51,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:12:51,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020608045] [2020-07-20 02:12:51,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:12:51,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:51,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:12:51,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:12:51,168 INFO L87 Difference]: Start difference. First operand 115928 states and 173777 transitions. Second operand 5 states. [2020-07-20 02:13:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:13:16,643 INFO L93 Difference]: Finished difference Result 441761 states and 661348 transitions. [2020-07-20 02:13:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 02:13:16,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-07-20 02:13:16,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:13:16,984 INFO L225 Difference]: With dead ends: 441761 [2020-07-20 02:13:16,984 INFO L226 Difference]: Without dead ends: 327813 [2020-07-20 02:13:17,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:13:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327813 states. [2020-07-20 02:13:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327813 to 116455. [2020-07-20 02:13:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116455 states. [2020-07-20 02:13:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116455 states to 116455 states and 174537 transitions. [2020-07-20 02:13:24,746 INFO L78 Accepts]: Start accepts. Automaton has 116455 states and 174537 transitions. Word has length 324 [2020-07-20 02:13:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:13:24,751 INFO L479 AbstractCegarLoop]: Abstraction has 116455 states and 174537 transitions. [2020-07-20 02:13:24,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:13:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 116455 states and 174537 transitions. [2020-07-20 02:13:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 02:13:24,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:13:24,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:13:24,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 02:13:24,827 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:13:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:13:24,827 INFO L82 PathProgramCache]: Analyzing trace with hash 445665130, now seen corresponding path program 1 times [2020-07-20 02:13:24,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:13:24,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891634501] [2020-07-20 02:13:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:13:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:25,412 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:13:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:25,515 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 02:13:25,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891634501] [2020-07-20 02:13:25,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:13:25,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:13:25,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066322089] [2020-07-20 02:13:25,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:13:25,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:13:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:13:25,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:13:25,517 INFO L87 Difference]: Start difference. First operand 116455 states and 174537 transitions. Second operand 4 states. [2020-07-20 02:13:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:13:42,033 INFO L93 Difference]: Finished difference Result 295887 states and 447035 transitions. [2020-07-20 02:13:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:13:42,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 02:13:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:13:42,219 INFO L225 Difference]: With dead ends: 295887 [2020-07-20 02:13:42,219 INFO L226 Difference]: Without dead ends: 185881 [2020-07-20 02:13:42,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:13:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185881 states. [2020-07-20 02:13:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185881 to 146359. [2020-07-20 02:13:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146359 states. [2020-07-20 02:13:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146359 states to 146359 states and 222895 transitions. [2020-07-20 02:13:53,748 INFO L78 Accepts]: Start accepts. Automaton has 146359 states and 222895 transitions. Word has length 324 [2020-07-20 02:13:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:13:53,748 INFO L479 AbstractCegarLoop]: Abstraction has 146359 states and 222895 transitions. [2020-07-20 02:13:53,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:13:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 146359 states and 222895 transitions. [2020-07-20 02:13:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 02:13:53,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:13:53,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:13:53,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 02:13:53,821 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:13:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:13:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1844980394, now seen corresponding path program 1 times [2020-07-20 02:13:53,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:13:53,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032167968] [2020-07-20 02:13:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:13:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:54,477 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:13:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:54,586 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 02:13:54,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032167968] [2020-07-20 02:13:54,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:13:54,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:13:54,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129739532] [2020-07-20 02:13:54,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:13:54,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:13:54,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:13:54,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:13:54,591 INFO L87 Difference]: Start difference. First operand 146359 states and 222895 transitions. Second operand 4 states. [2020-07-20 02:14:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:14:12,752 INFO L93 Difference]: Finished difference Result 370403 states and 566989 transitions. [2020-07-20 02:14:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:14:12,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 02:14:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:14:13,008 INFO L225 Difference]: With dead ends: 370403 [2020-07-20 02:14:13,008 INFO L226 Difference]: Without dead ends: 231897 [2020-07-20 02:14:13,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:14:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231897 states. [2020-07-20 02:14:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231897 to 199847. [2020-07-20 02:14:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199847 states. [2020-07-20 02:14:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199847 states to 199847 states and 309023 transitions. [2020-07-20 02:14:29,245 INFO L78 Accepts]: Start accepts. Automaton has 199847 states and 309023 transitions. Word has length 326 [2020-07-20 02:14:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:14:29,245 INFO L479 AbstractCegarLoop]: Abstraction has 199847 states and 309023 transitions. [2020-07-20 02:14:29,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:14:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 199847 states and 309023 transitions. [2020-07-20 02:14:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 02:14:29,317 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:14:29,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:14:29,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 02:14:29,318 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:14:29,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:14:29,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1689083675, now seen corresponding path program 1 times [2020-07-20 02:14:29,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:14:29,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435374548] [2020-07-20 02:14:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:14:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:30,159 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:14:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:30,239 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 02:14:30,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435374548] [2020-07-20 02:14:30,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:14:30,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:14:30,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271352778] [2020-07-20 02:14:30,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:14:30,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:14:30,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:14:30,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:14:30,241 INFO L87 Difference]: Start difference. First operand 199847 states and 309023 transitions. Second operand 4 states. [2020-07-20 02:15:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:02,363 INFO L93 Difference]: Finished difference Result 593639 states and 917537 transitions. [2020-07-20 02:15:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:15:02,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 02:15:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:02,838 INFO L225 Difference]: With dead ends: 593639 [2020-07-20 02:15:02,838 INFO L226 Difference]: Without dead ends: 396515 [2020-07-20 02:15:02,953 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 02:15:03,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396515 states. [2020-07-20 02:15:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396515 to 200115. [2020-07-20 02:15:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200115 states. [2020-07-20 02:15:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200115 states to 200115 states and 309383 transitions. [2020-07-20 02:15:22,926 INFO L78 Accepts]: Start accepts. Automaton has 200115 states and 309383 transitions. Word has length 326 [2020-07-20 02:15:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:15:22,927 INFO L479 AbstractCegarLoop]: Abstraction has 200115 states and 309383 transitions. [2020-07-20 02:15:22,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:15:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 200115 states and 309383 transitions. [2020-07-20 02:15:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:15:23,015 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:23,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:15:23,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 02:15:23,016 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:23,016 INFO L82 PathProgramCache]: Analyzing trace with hash -700863383, now seen corresponding path program 1 times [2020-07-20 02:15:23,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:23,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572762075] [2020-07-20 02:15:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:15:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:23,507 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:15:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:23,580 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 02:15:23,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572762075] [2020-07-20 02:15:23,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:23,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:15:23,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196804989] [2020-07-20 02:15:23,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:15:23,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:23,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:15:23,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:23,582 INFO L87 Difference]: Start difference. First operand 200115 states and 309383 transitions. Second operand 4 states. [2020-07-20 02:16:00,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:00,647 INFO L93 Difference]: Finished difference Result 593819 states and 917669 transitions. [2020-07-20 02:16:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:16:00,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 02:16:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:01,124 INFO L225 Difference]: With dead ends: 593819 [2020-07-20 02:16:01,124 INFO L226 Difference]: Without dead ends: 396715 [2020-07-20 02:16:01,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:16:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396715 states. [2020-07-20 02:16:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396715 to 200347. [2020-07-20 02:16:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200347 states. [2020-07-20 02:16:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200347 states to 200347 states and 309609 transitions. [2020-07-20 02:16:16,592 INFO L78 Accepts]: Start accepts. Automaton has 200347 states and 309609 transitions. Word has length 327 [2020-07-20 02:16:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:16,592 INFO L479 AbstractCegarLoop]: Abstraction has 200347 states and 309609 transitions. [2020-07-20 02:16:16,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:16:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 200347 states and 309609 transitions. [2020-07-20 02:16:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:16:16,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:16,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:16:16,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 02:16:16,666 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:16,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1551390185, now seen corresponding path program 1 times [2020-07-20 02:16:16,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:16,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327797677] [2020-07-20 02:16:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:16:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:17,217 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:16:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:17,324 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 02:16:17,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327797677] [2020-07-20 02:16:17,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:16:17,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:16:17,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679300112] [2020-07-20 02:16:17,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 02:16:17,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:16:17,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 02:16:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:16:17,326 INFO L87 Difference]: Start difference. First operand 200347 states and 309609 transitions. Second operand 6 states. [2020-07-20 02:16:18,275 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:16:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:39,627 INFO L93 Difference]: Finished difference Result 393817 states and 608812 transitions. [2020-07-20 02:16:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 02:16:39,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 327 [2020-07-20 02:16:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:39,866 INFO L225 Difference]: With dead ends: 393817 [2020-07-20 02:16:39,866 INFO L226 Difference]: Without dead ends: 200347 [2020-07-20 02:16:39,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 02:16:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200347 states. [2020-07-20 02:16:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200347 to 200347. [2020-07-20 02:16:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200347 states. [2020-07-20 02:16:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200347 states to 200347 states and 307087 transitions. [2020-07-20 02:16:59,509 INFO L78 Accepts]: Start accepts. Automaton has 200347 states and 307087 transitions. Word has length 327 [2020-07-20 02:16:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:59,509 INFO L479 AbstractCegarLoop]: Abstraction has 200347 states and 307087 transitions. [2020-07-20 02:16:59,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 02:16:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 200347 states and 307087 transitions. [2020-07-20 02:16:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:16:59,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:59,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:16:59,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 02:16:59,582 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:59,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1871199150, now seen corresponding path program 1 times [2020-07-20 02:16:59,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:59,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047432915] [2020-07-20 02:16:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:16:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:00,776 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:17:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:00,926 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 02:17:00,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047432915] [2020-07-20 02:17:00,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:17:00,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 02:17:00,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728455697] [2020-07-20 02:17:00,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 02:17:00,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:17:00,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 02:17:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-20 02:17:00,929 INFO L87 Difference]: Start difference. First operand 200347 states and 307087 transitions. Second operand 10 states. [2020-07-20 02:17:01,397 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-07-20 02:17:08,858 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 02:17:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:17:55,039 INFO L93 Difference]: Finished difference Result 718473 states and 1114748 transitions. [2020-07-20 02:17:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 02:17:55,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 327 [2020-07-20 02:17:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:17:56,033 INFO L225 Difference]: With dead ends: 718473 [2020-07-20 02:17:56,033 INFO L226 Difference]: Without dead ends: 525651 [2020-07-20 02:17:56,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-07-20 02:17:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525651 states. [2020-07-20 02:18:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525651 to 379683. [2020-07-20 02:18:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379683 states. [2020-07-20 02:18:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379683 states to 379683 states and 582699 transitions. [2020-07-20 02:18:28,520 INFO L78 Accepts]: Start accepts. Automaton has 379683 states and 582699 transitions. Word has length 327 [2020-07-20 02:18:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:18:28,520 INFO L479 AbstractCegarLoop]: Abstraction has 379683 states and 582699 transitions. [2020-07-20 02:18:28,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 02:18:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 379683 states and 582699 transitions. [2020-07-20 02:18:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:18:28,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:18:28,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:18:28,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 02:18:28,618 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:18:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:18:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1485523804, now seen corresponding path program 1 times [2020-07-20 02:18:28,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:18:28,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123007140] [2020-07-20 02:18:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:18:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:29,302 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:18:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:29,403 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 02:18:29,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123007140] [2020-07-20 02:18:29,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:18:29,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:18:29,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589531948] [2020-07-20 02:18:29,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:18:29,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:18:29,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:18:29,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:18:29,405 INFO L87 Difference]: Start difference. First operand 379683 states and 582699 transitions. Second operand 5 states. [2020-07-20 02:19:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:19:49,400 INFO L93 Difference]: Finished difference Result 1120805 states and 1721566 transitions. [2020-07-20 02:19:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:19:49,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-07-20 02:19:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:19:50,449 INFO L225 Difference]: With dead ends: 1120805 [2020-07-20 02:19:50,449 INFO L226 Difference]: Without dead ends: 741908 [2020-07-20 02:19:50,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:19:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741908 states. [2020-07-20 02:21:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741908 to 741906. [2020-07-20 02:21:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741906 states. [2020-07-20 02:21:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741906 states to 741906 states and 1134941 transitions. [2020-07-20 02:21:05,536 INFO L78 Accepts]: Start accepts. Automaton has 741906 states and 1134941 transitions. Word has length 327 [2020-07-20 02:21:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:21:05,536 INFO L479 AbstractCegarLoop]: Abstraction has 741906 states and 1134941 transitions. [2020-07-20 02:21:05,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:21:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 741906 states and 1134941 transitions. [2020-07-20 02:21:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 02:21:05,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:21:05,765 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] [2020-07-20 02:21:05,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 02:21:05,766 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:21:05,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:21:05,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1259906926, now seen corresponding path program 1 times [2020-07-20 02:21:05,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:21:05,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632097195] [2020-07-20 02:21:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2ccf96 [2020-07-20 02:21:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:06,451 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 02:21:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:06,522 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 02:21:06,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632097195] [2020-07-20 02:21:06,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:21:06,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:21:06,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837936292] [2020-07-20 02:21:06,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:21:06,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:21:06,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:21:06,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:21:06,524 INFO L87 Difference]: Start difference. First operand 741906 states and 1134941 transitions. Second operand 5 states.