/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:37:54,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:37:54,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:37:54,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 06:37:54,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:37:54,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:37:54,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:37:54,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:37:54,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:37:54,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:37:54,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:37:54,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:37:54,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:37:54,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:37:54,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:37:54,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:37:54,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:37:54,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:37:54,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:37:54,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:37:54,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 06:37:54,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:37:54,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:37:54,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:37:54,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:37:54,988 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:37:54,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:37:54,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:37:54,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:37:54,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:37:54,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:37:54,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:37:54,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:37:54,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:37:54,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:37:54,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:37:54,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:37:54,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:37:54,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:37:54,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:37:54,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:37:54,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:37:54,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:37:54,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:37:54,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:37:54,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:37:54,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:37:54,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:37:54,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:37:54,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:37:54,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:37:55,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:37:55,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:37:55,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:37:55,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:37:55,287 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:37:55,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-20 06:37:55,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69061bcde/bd48836f31ac4e53ab598e5f0af4ac58/FLAGbac618490 [2020-07-20 06:37:56,162 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:37:56,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-20 06:37:56,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69061bcde/bd48836f31ac4e53ab598e5f0af4ac58/FLAGbac618490 [2020-07-20 06:37:56,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69061bcde/bd48836f31ac4e53ab598e5f0af4ac58 [2020-07-20 06:37:56,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:37:56,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:37:56,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:37:56,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:37:56,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:37:56,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:37:56" (1/1) ... [2020-07-20 06:37:56,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f57f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:37:56, skipping insertion in model container [2020-07-20 06:37:56,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:37:56" (1/1) ... [2020-07-20 06:37:56,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:37:56,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:37:59,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:37:59,125 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:38:00,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:38:00,988 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:38:00,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00 WrapperNode [2020-07-20 06:38:00,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:38:00,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:38:00,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:38:00,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:38:01,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... [2020-07-20 06:38:01,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... [2020-07-20 06:38:01,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... [2020-07-20 06:38:01,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... [2020-07-20 06:38:01,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... [2020-07-20 06:38:01,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... [2020-07-20 06:38:01,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... [2020-07-20 06:38:01,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:38:01,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:38:01,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:38:01,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:38:01,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:38:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:38:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:38:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:38:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:38:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:38:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 06:38:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 06:38:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 06:38:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:38:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:38:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 06:38:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 06:38:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 06:38:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 06:38:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 06:38:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 06:38:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-20 06:38:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 06:38:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 06:38:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:38:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:38:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:38:07,841 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:38:07,841 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 06:38:07,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:38:07 BoogieIcfgContainer [2020-07-20 06:38:07,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:38:07,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:38:07,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:38:07,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:38:07,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:37:56" (1/3) ... [2020-07-20 06:38:07,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3131e415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:38:07, skipping insertion in model container [2020-07-20 06:38:07,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:38:00" (2/3) ... [2020-07-20 06:38:07,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3131e415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:38:07, skipping insertion in model container [2020-07-20 06:38:07,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:38:07" (3/3) ... [2020-07-20 06:38:07,864 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-20 06:38:07,876 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:38:07,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-20 06:38:07,901 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-20 06:38:07,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:38:07,937 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:38:07,938 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:38:07,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:38:07,938 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:38:07,938 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:38:07,938 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:38:07,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:38:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states. [2020-07-20 06:38:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-20 06:38:08,037 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:38:08,040 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 06:38:08,041 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:38:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:38:08,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1936618047, now seen corresponding path program 1 times [2020-07-20 06:38:08,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:38:08,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168385831] [2020-07-20 06:38:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:38:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:10,071 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:38:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:38:10,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168385831] [2020-07-20 06:38:10,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:38:10,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:38:10,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993197327] [2020-07-20 06:38:10,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:38:10,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:38:10,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:38:10,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:38:10,370 INFO L87 Difference]: Start difference. First operand 2515 states. Second operand 5 states. [2020-07-20 06:38:27,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:38:27,533 INFO L93 Difference]: Finished difference Result 4483 states and 7776 transitions. [2020-07-20 06:38:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:38:27,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-07-20 06:38:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:38:27,588 INFO L225 Difference]: With dead ends: 4483 [2020-07-20 06:38:27,588 INFO L226 Difference]: Without dead ends: 2511 [2020-07-20 06:38:27,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:38:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-07-20 06:38:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2020-07-20 06:38:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-07-20 06:38:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4317 transitions. [2020-07-20 06:38:27,848 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4317 transitions. Word has length 322 [2020-07-20 06:38:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:38:27,851 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 4317 transitions. [2020-07-20 06:38:27,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:38:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4317 transitions. [2020-07-20 06:38:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-07-20 06:38:27,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:38:27,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:38:27,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:38:27,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:38:27,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:38:27,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1448784548, now seen corresponding path program 1 times [2020-07-20 06:38:27,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:38:27,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534691789] [2020-07-20 06:38:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:38:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:29,480 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:38:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:38:29,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534691789] [2020-07-20 06:38:29,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:38:29,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:38:29,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299442442] [2020-07-20 06:38:29,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:38:29,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:38:29,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:38:29,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:38:29,802 INFO L87 Difference]: Start difference. First operand 2511 states and 4317 transitions. Second operand 4 states. [2020-07-20 06:38:30,620 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 06:38:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:38:56,874 INFO L93 Difference]: Finished difference Result 6234 states and 10658 transitions. [2020-07-20 06:38:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:38:56,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 386 [2020-07-20 06:38:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:38:56,901 INFO L225 Difference]: With dead ends: 6234 [2020-07-20 06:38:56,901 INFO L226 Difference]: Without dead ends: 4315 [2020-07-20 06:38:56,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:38:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-07-20 06:38:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4311. [2020-07-20 06:38:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-07-20 06:38:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7334 transitions. [2020-07-20 06:38:57,033 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7334 transitions. Word has length 386 [2020-07-20 06:38:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:38:57,034 INFO L479 AbstractCegarLoop]: Abstraction has 4311 states and 7334 transitions. [2020-07-20 06:38:57,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:38:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7334 transitions. [2020-07-20 06:38:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-20 06:38:57,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:38:57,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:38:57,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:38:57,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:38:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:38:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash 533740400, now seen corresponding path program 1 times [2020-07-20 06:38:57,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:38:57,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764940220] [2020-07-20 06:38:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:38:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:58,183 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:38:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:38:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:38:58,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764940220] [2020-07-20 06:38:58,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:38:58,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:38:58,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530272854] [2020-07-20 06:38:58,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:38:58,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:38:58,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:38:58,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:38:58,334 INFO L87 Difference]: Start difference. First operand 4311 states and 7334 transitions. Second operand 4 states. [2020-07-20 06:38:59,169 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 06:39:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:39:24,413 INFO L93 Difference]: Finished difference Result 7280 states and 12405 transitions. [2020-07-20 06:39:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:39:24,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2020-07-20 06:39:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:39:24,444 INFO L225 Difference]: With dead ends: 7280 [2020-07-20 06:39:24,444 INFO L226 Difference]: Without dead ends: 5350 [2020-07-20 06:39:24,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:39:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2020-07-20 06:39:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5346. [2020-07-20 06:39:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5346 states. [2020-07-20 06:39:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 9097 transitions. [2020-07-20 06:39:24,600 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 9097 transitions. Word has length 391 [2020-07-20 06:39:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:39:24,601 INFO L479 AbstractCegarLoop]: Abstraction has 5346 states and 9097 transitions. [2020-07-20 06:39:24,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:39:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 9097 transitions. [2020-07-20 06:39:24,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-07-20 06:39:24,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:39:24,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:39:24,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:39:24,620 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:39:24,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:39:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1980960461, now seen corresponding path program 1 times [2020-07-20 06:39:24,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:39:24,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835165482] [2020-07-20 06:39:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:39:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:25,805 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:39:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:39:25,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835165482] [2020-07-20 06:39:25,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:39:25,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:39:25,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105190772] [2020-07-20 06:39:25,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:39:25,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:39:25,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:39:25,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:25,982 INFO L87 Difference]: Start difference. First operand 5346 states and 9097 transitions. Second operand 4 states. [2020-07-20 06:39:26,840 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 06:39:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:39:53,422 INFO L93 Difference]: Finished difference Result 14521 states and 24616 transitions. [2020-07-20 06:39:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:39:53,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-07-20 06:39:53,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:39:53,468 INFO L225 Difference]: With dead ends: 14521 [2020-07-20 06:39:53,468 INFO L226 Difference]: Without dead ends: 9795 [2020-07-20 06:39:53,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:39:53,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2020-07-20 06:39:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 9791. [2020-07-20 06:39:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9791 states. [2020-07-20 06:39:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9791 states to 9791 states and 16577 transitions. [2020-07-20 06:39:53,797 INFO L78 Accepts]: Start accepts. Automaton has 9791 states and 16577 transitions. Word has length 395 [2020-07-20 06:39:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:39:53,798 INFO L479 AbstractCegarLoop]: Abstraction has 9791 states and 16577 transitions. [2020-07-20 06:39:53,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:39:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 9791 states and 16577 transitions. [2020-07-20 06:39:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-07-20 06:39:53,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:39:53,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:39:53,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 06:39:53,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:39:53,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:39:53,834 INFO L82 PathProgramCache]: Analyzing trace with hash 155302923, now seen corresponding path program 1 times [2020-07-20 06:39:53,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:39:53,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239241531] [2020-07-20 06:39:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:39:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:54,942 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:39:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:39:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:39:55,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239241531] [2020-07-20 06:39:55,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:39:55,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:39:55,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369628805] [2020-07-20 06:39:55,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:39:55,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:39:55,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:39:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:39:55,166 INFO L87 Difference]: Start difference. First operand 9791 states and 16577 transitions. Second operand 4 states. [2020-07-20 06:39:56,003 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 06:40:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:40:22,338 INFO L93 Difference]: Finished difference Result 17611 states and 29837 transitions. [2020-07-20 06:40:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:40:22,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2020-07-20 06:40:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:40:22,377 INFO L225 Difference]: With dead ends: 17611 [2020-07-20 06:40:22,377 INFO L226 Difference]: Without dead ends: 12874 [2020-07-20 06:40:22,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:40:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12874 states. [2020-07-20 06:40:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12874 to 12870. [2020-07-20 06:40:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12870 states. [2020-07-20 06:40:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12870 states to 12870 states and 21779 transitions. [2020-07-20 06:40:22,747 INFO L78 Accepts]: Start accepts. Automaton has 12870 states and 21779 transitions. Word has length 400 [2020-07-20 06:40:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:40:22,748 INFO L479 AbstractCegarLoop]: Abstraction has 12870 states and 21779 transitions. [2020-07-20 06:40:22,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:40:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12870 states and 21779 transitions. [2020-07-20 06:40:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-07-20 06:40:22,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:40:22,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:40:22,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 06:40:22,774 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:40:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:40:22,775 INFO L82 PathProgramCache]: Analyzing trace with hash -571279020, now seen corresponding path program 1 times [2020-07-20 06:40:22,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:40:22,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153858439] [2020-07-20 06:40:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:40:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:23,997 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:40:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:40:24,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153858439] [2020-07-20 06:40:24,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:40:24,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:40:24,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191812643] [2020-07-20 06:40:24,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:40:24,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:40:24,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:40:24,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:40:24,155 INFO L87 Difference]: Start difference. First operand 12870 states and 21779 transitions. Second operand 4 states. [2020-07-20 06:40:24,999 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 06:40:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:40:52,479 INFO L93 Difference]: Finished difference Result 36509 states and 61606 transitions. [2020-07-20 06:40:52,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:40:52,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2020-07-20 06:40:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:40:52,535 INFO L225 Difference]: With dead ends: 36509 [2020-07-20 06:40:52,536 INFO L226 Difference]: Without dead ends: 24287 [2020-07-20 06:40:52,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:40:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2020-07-20 06:40:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 24283. [2020-07-20 06:40:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24283 states. [2020-07-20 06:40:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24283 states to 24283 states and 40885 transitions. [2020-07-20 06:40:53,213 INFO L78 Accepts]: Start accepts. Automaton has 24283 states and 40885 transitions. Word has length 404 [2020-07-20 06:40:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:40:53,213 INFO L479 AbstractCegarLoop]: Abstraction has 24283 states and 40885 transitions. [2020-07-20 06:40:53,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:40:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 24283 states and 40885 transitions. [2020-07-20 06:40:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-20 06:40:53,266 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:40:53,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:40:53,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 06:40:53,267 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:40:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:40:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1914746064, now seen corresponding path program 1 times [2020-07-20 06:40:53,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:40:53,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491831014] [2020-07-20 06:40:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:40:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:54,430 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:40:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:40:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:40:54,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491831014] [2020-07-20 06:40:54,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:40:54,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:40:54,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934384775] [2020-07-20 06:40:54,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:40:54,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:40:54,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:40:54,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:40:54,767 INFO L87 Difference]: Start difference. First operand 24283 states and 40885 transitions. Second operand 4 states. [2020-07-20 06:40:55,646 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 06:41:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:41:23,036 INFO L93 Difference]: Finished difference Result 44887 states and 75675 transitions. [2020-07-20 06:41:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:41:23,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-07-20 06:41:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:41:23,089 INFO L225 Difference]: With dead ends: 44887 [2020-07-20 06:41:23,089 INFO L226 Difference]: Without dead ends: 32654 [2020-07-20 06:41:23,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:41:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32654 states. [2020-07-20 06:41:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32654 to 32650. [2020-07-20 06:41:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32650 states. [2020-07-20 06:41:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32650 states to 32650 states and 54937 transitions. [2020-07-20 06:41:23,846 INFO L78 Accepts]: Start accepts. Automaton has 32650 states and 54937 transitions. Word has length 409 [2020-07-20 06:41:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:41:23,846 INFO L479 AbstractCegarLoop]: Abstraction has 32650 states and 54937 transitions. [2020-07-20 06:41:23,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:41:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 32650 states and 54937 transitions. [2020-07-20 06:41:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-07-20 06:41:23,882 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:41:23,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:41:23,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 06:41:23,882 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:41:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:41:23,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1002353059, now seen corresponding path program 1 times [2020-07-20 06:41:23,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:41:23,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301868380] [2020-07-20 06:41:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:41:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:41:25,141 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:41:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:41:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:41:25,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301868380] [2020-07-20 06:41:25,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:41:25,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:41:25,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517984347] [2020-07-20 06:41:25,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:41:25,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:41:25,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:41:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:41:25,302 INFO L87 Difference]: Start difference. First operand 32650 states and 54937 transitions. Second operand 4 states. [2020-07-20 06:41:26,313 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 06:41:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:41:55,044 INFO L93 Difference]: Finished difference Result 94233 states and 158132 transitions. [2020-07-20 06:41:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:41:55,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2020-07-20 06:41:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:41:55,142 INFO L225 Difference]: With dead ends: 94233 [2020-07-20 06:41:55,143 INFO L226 Difference]: Without dead ends: 62259 [2020-07-20 06:41:55,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:41:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62259 states. [2020-07-20 06:41:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62259 to 62255. [2020-07-20 06:41:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62255 states. [2020-07-20 06:41:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62255 states to 62255 states and 104167 transitions. [2020-07-20 06:41:58,195 INFO L78 Accepts]: Start accepts. Automaton has 62255 states and 104167 transitions. Word has length 413 [2020-07-20 06:41:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:41:58,196 INFO L479 AbstractCegarLoop]: Abstraction has 62255 states and 104167 transitions. [2020-07-20 06:41:58,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:41:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 62255 states and 104167 transitions. [2020-07-20 06:41:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-07-20 06:41:58,246 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:41:58,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:41:58,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 06:41:58,247 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:41:58,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:41:58,247 INFO L82 PathProgramCache]: Analyzing trace with hash 339386235, now seen corresponding path program 1 times [2020-07-20 06:41:58,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:41:58,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666719366] [2020-07-20 06:41:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:41:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:41:59,433 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:41:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:42:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:42:00,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666719366] [2020-07-20 06:42:00,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:42:00,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:42:00,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689642359] [2020-07-20 06:42:00,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:42:00,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:42:00,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:42:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:42:00,051 INFO L87 Difference]: Start difference. First operand 62255 states and 104167 transitions. Second operand 4 states. [2020-07-20 06:42:00,964 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 06:42:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:42:30,599 INFO L93 Difference]: Finished difference Result 116011 states and 194409 transitions. [2020-07-20 06:42:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:42:30,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-07-20 06:42:30,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:42:30,697 INFO L225 Difference]: With dead ends: 116011 [2020-07-20 06:42:30,697 INFO L226 Difference]: Without dead ends: 84026 [2020-07-20 06:42:30,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:42:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2020-07-20 06:42:34,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 84022. [2020-07-20 06:42:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84022 states. [2020-07-20 06:42:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84022 states to 84022 states and 140431 transitions. [2020-07-20 06:42:34,472 INFO L78 Accepts]: Start accepts. Automaton has 84022 states and 140431 transitions. Word has length 418 [2020-07-20 06:42:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:42:34,472 INFO L479 AbstractCegarLoop]: Abstraction has 84022 states and 140431 transitions. [2020-07-20 06:42:34,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:42:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 84022 states and 140431 transitions. [2020-07-20 06:42:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-07-20 06:42:34,557 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:42:34,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:42:34,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 06:42:34,557 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:42:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:42:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1033340836, now seen corresponding path program 1 times [2020-07-20 06:42:34,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:42:34,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613449846] [2020-07-20 06:42:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:42:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:42:35,770 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:42:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:42:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:42:35,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613449846] [2020-07-20 06:42:35,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:42:35,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:42:35,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112838678] [2020-07-20 06:42:35,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:42:35,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:42:35,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:42:35,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:42:35,959 INFO L87 Difference]: Start difference. First operand 84022 states and 140431 transitions. Second operand 4 states. [2020-07-20 06:42:37,277 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 06:43:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:43:09,571 INFO L93 Difference]: Finished difference Result 243661 states and 406034 transitions. [2020-07-20 06:43:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:43:09,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2020-07-20 06:43:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:43:09,796 INFO L225 Difference]: With dead ends: 243661 [2020-07-20 06:43:09,797 INFO L226 Difference]: Without dead ends: 160343 [2020-07-20 06:43:09,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:43:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160343 states. [2020-07-20 06:43:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160343 to 160339. [2020-07-20 06:43:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160339 states. [2020-07-20 06:43:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160339 states to 160339 states and 266233 transitions. [2020-07-20 06:43:13,755 INFO L78 Accepts]: Start accepts. Automaton has 160339 states and 266233 transitions. Word has length 422 [2020-07-20 06:43:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:43:13,755 INFO L479 AbstractCegarLoop]: Abstraction has 160339 states and 266233 transitions. [2020-07-20 06:43:13,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:43:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 160339 states and 266233 transitions. [2020-07-20 06:43:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-07-20 06:43:17,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:43:17,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:43:17,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 06:43:17,272 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:43:17,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:43:17,273 INFO L82 PathProgramCache]: Analyzing trace with hash -986262280, now seen corresponding path program 1 times [2020-07-20 06:43:17,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:43:17,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718139637] [2020-07-20 06:43:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:43:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:43:18,402 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:43:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:43:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:43:18,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718139637] [2020-07-20 06:43:18,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:43:18,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 06:43:18,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145765757] [2020-07-20 06:43:18,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:43:18,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:43:18,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:43:18,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:43:18,576 INFO L87 Difference]: Start difference. First operand 160339 states and 266233 transitions. Second operand 4 states. [2020-07-20 06:43:19,499 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 06:43:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:43:53,499 INFO L93 Difference]: Finished difference Result 298271 states and 495971 transitions. [2020-07-20 06:43:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:43:53,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2020-07-20 06:43:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:43:53,746 INFO L225 Difference]: With dead ends: 298271 [2020-07-20 06:43:53,747 INFO L226 Difference]: Without dead ends: 214942 [2020-07-20 06:43:53,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:43:53,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214942 states. [2020-07-20 06:44:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214942 to 214938. [2020-07-20 06:44:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214938 states. [2020-07-20 06:44:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214938 states to 214938 states and 356165 transitions. [2020-07-20 06:44:02,219 INFO L78 Accepts]: Start accepts. Automaton has 214938 states and 356165 transitions. Word has length 427 [2020-07-20 06:44:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:44:02,219 INFO L479 AbstractCegarLoop]: Abstraction has 214938 states and 356165 transitions. [2020-07-20 06:44:02,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:44:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 214938 states and 356165 transitions. [2020-07-20 06:44:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-07-20 06:44:02,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:44:02,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:44:02,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 06:44:02,375 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:44:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:44:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1162904133, now seen corresponding path program 1 times [2020-07-20 06:44:02,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:44:02,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069392078] [2020-07-20 06:44:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:44:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:44:03,584 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:44:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:44:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:44:07,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069392078] [2020-07-20 06:44:07,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:44:07,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 06:44:07,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237580064] [2020-07-20 06:44:07,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 06:44:07,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:44:07,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 06:44:07,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:44:07,041 INFO L87 Difference]: Start difference. First operand 214938 states and 356165 transitions. Second operand 8 states. [2020-07-20 06:44:08,005 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 417 [2020-07-20 06:45:30,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:45:30,805 INFO L93 Difference]: Finished difference Result 1123724 states and 1865902 transitions. [2020-07-20 06:45:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 06:45:30,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-07-20 06:45:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:45:40,599 INFO L225 Difference]: With dead ends: 1123724 [2020-07-20 06:45:40,599 INFO L226 Difference]: Without dead ends: 909492 [2020-07-20 06:45:40,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-07-20 06:45:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909492 states. [2020-07-20 06:46:09,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909492 to 427813. [2020-07-20 06:46:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427813 states. [2020-07-20 06:46:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427813 states to 427813 states and 706031 transitions. [2020-07-20 06:46:11,597 INFO L78 Accepts]: Start accepts. Automaton has 427813 states and 706031 transitions. Word has length 431 [2020-07-20 06:46:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:46:11,597 INFO L479 AbstractCegarLoop]: Abstraction has 427813 states and 706031 transitions. [2020-07-20 06:46:11,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 06:46:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 427813 states and 706031 transitions. [2020-07-20 06:46:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-20 06:46:11,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:46:11,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:46:11,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 06:46:11,987 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:46:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:46:11,987 INFO L82 PathProgramCache]: Analyzing trace with hash -657666499, now seen corresponding path program 1 times [2020-07-20 06:46:11,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:46:11,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354399035] [2020-07-20 06:46:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:46:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:46:13,369 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:46:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:46:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:46:13,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354399035] [2020-07-20 06:46:13,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:46:13,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:46:13,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798249014] [2020-07-20 06:46:13,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:46:13,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:46:13,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:46:13,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:46:13,541 INFO L87 Difference]: Start difference. First operand 427813 states and 706031 transitions. Second operand 5 states. [2020-07-20 06:46:15,041 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 06:47:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:47:15,275 INFO L93 Difference]: Finished difference Result 1272473 states and 2107267 transitions. [2020-07-20 06:47:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:47:15,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2020-07-20 06:47:15,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:47:16,568 INFO L225 Difference]: With dead ends: 1272473 [2020-07-20 06:47:16,568 INFO L226 Difference]: Without dead ends: 845366 [2020-07-20 06:47:16,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:47:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845366 states. [2020-07-20 06:48:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845366 to 705994. [2020-07-20 06:48:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705994 states. [2020-07-20 06:48:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705994 states to 705994 states and 1165461 transitions. [2020-07-20 06:48:05,749 INFO L78 Accepts]: Start accepts. Automaton has 705994 states and 1165461 transitions. Word has length 433 [2020-07-20 06:48:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:48:05,750 INFO L479 AbstractCegarLoop]: Abstraction has 705994 states and 1165461 transitions. [2020-07-20 06:48:05,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:48:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 705994 states and 1165461 transitions. [2020-07-20 06:48:06,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-20 06:48:06,398 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:48:06,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:48:06,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 06:48:06,399 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:48:06,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:48:06,399 INFO L82 PathProgramCache]: Analyzing trace with hash -628885910, now seen corresponding path program 1 times [2020-07-20 06:48:06,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:48:06,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751469827] [2020-07-20 06:48:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26f81e62 [2020-07-20 06:48:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:48:09,131 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 06:48:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:48:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:48:09,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751469827] [2020-07-20 06:48:09,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:48:09,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:48:09,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011296080] [2020-07-20 06:48:09,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:48:09,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:48:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:48:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:48:09,340 INFO L87 Difference]: Start difference. First operand 705994 states and 1165461 transitions. Second operand 5 states. [2020-07-20 06:48:10,310 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 413