/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:31:55,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:31:55,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:31:55,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:31:55,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:31:55,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:31:55,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:31:55,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:31:55,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:31:55,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:31:55,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:31:55,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:31:55,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:31:55,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:31:55,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:31:55,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:31:55,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:31:55,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:31:55,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:31:55,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:31:55,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:31:55,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:31:55,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:31:55,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:31:55,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:31:55,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:31:55,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:31:55,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:31:55,166 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 [2020-07-17 12:31:55,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:31:55,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:31:55,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:31:55,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:31:55,181 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:31:55,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:31:55,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:31:55,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:31:55,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:31:55,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:31:55,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:31:55,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:31:55,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:31:55,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:31:55,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:31:55,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:31:55,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:31:55,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:31:55,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:31:55,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:31:55,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:31:55,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:31:55,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:31:55,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:31:55,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:31:55,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:31:55,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:31:55,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:31:55,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:31:55,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:31:55,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:31:55,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:31:55,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:31:55,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:31:55,467 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:31:55,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-17 12:31:55,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc7da11d/af02cf3284814d8c91415bb49bf3a16d/FLAG65943ab4a [2020-07-17 12:31:56,311 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:31:56,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-17 12:31:56,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc7da11d/af02cf3284814d8c91415bb49bf3a16d/FLAG65943ab4a [2020-07-17 12:31:56,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc7da11d/af02cf3284814d8c91415bb49bf3a16d [2020-07-17 12:31:56,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:31:56,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:31:56,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:31:56,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:31:56,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:31:56,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:31:56" (1/1) ... [2020-07-17 12:31:56,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0a1a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:31:56, skipping insertion in model container [2020-07-17 12:31:56,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:31:56" (1/1) ... [2020-07-17 12:31:56,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:31:57,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:31:59,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:31:59,507 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:32:01,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:32:01,320 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:32:01,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01 WrapperNode [2020-07-17 12:32:01,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:32:01,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:32:01,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:32:01,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:32:01,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (1/1) ... [2020-07-17 12:32:01,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (1/1) ... [2020-07-17 12:32:01,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (1/1) ... [2020-07-17 12:32:01,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (1/1) ... [2020-07-17 12:32:01,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (1/1) ... [2020-07-17 12:32:01,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (1/1) ... [2020-07-17 12:32:01,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (1/1) ... [2020-07-17 12:32:01,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:32:01,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:32:01,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:32:01,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:32:01,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (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 [2020-07-17 12:32:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:32:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:32:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:32:01,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:32:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:32:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-17 12:32:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 12:32:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-17 12:32:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:32:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:32:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-17 12:32:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-17 12:32:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-17 12:32:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-17 12:32:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-17 12:32:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-17 12:32:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-17 12:32:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-17 12:32:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-17 12:32:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:32:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:32:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:32:08,897 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:32:08,898 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 12:32:08,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:32:08 BoogieIcfgContainer [2020-07-17 12:32:08,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:32:08,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:32:08,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:32:08,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:32:08,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:31:56" (1/3) ... [2020-07-17 12:32:08,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ff6126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:32:08, skipping insertion in model container [2020-07-17 12:32:08,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:32:01" (2/3) ... [2020-07-17 12:32:08,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ff6126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:32:08, skipping insertion in model container [2020-07-17 12:32:08,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:32:08" (3/3) ... [2020-07-17 12:32:08,921 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-17 12:32:08,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:32:08,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-17 12:32:08,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-17 12:32:08,987 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:32:08,988 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:32:08,988 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:32:08,988 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:32:08,988 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:32:08,988 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:32:08,988 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:32:08,988 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:32:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states. [2020-07-17 12:32:09,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-17 12:32:09,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:32:09,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:32:09,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:32:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:32:09,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1936618047, now seen corresponding path program 1 times [2020-07-17 12:32:09,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:32:09,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153079227] [2020-07-17 12:32:09,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:32:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:32:11,139 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:32:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:32:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:32:11,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153079227] [2020-07-17 12:32:11,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:32:11,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:32:11,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835026905] [2020-07-17 12:32:11,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:32:11,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:32:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:32:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:32:11,343 INFO L87 Difference]: Start difference. First operand 2515 states. Second operand 5 states. [2020-07-17 12:32:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:32:29,396 INFO L93 Difference]: Finished difference Result 4483 states and 7776 transitions. [2020-07-17 12:32:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:32:29,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-07-17 12:32:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:32:29,446 INFO L225 Difference]: With dead ends: 4483 [2020-07-17 12:32:29,446 INFO L226 Difference]: Without dead ends: 2511 [2020-07-17 12:32:29,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:32:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-07-17 12:32:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2020-07-17 12:32:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-07-17 12:32:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4317 transitions. [2020-07-17 12:32:29,699 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4317 transitions. Word has length 322 [2020-07-17 12:32:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:32:29,702 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 4317 transitions. [2020-07-17 12:32:29,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:32:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4317 transitions. [2020-07-17 12:32:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-07-17 12:32:29,721 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:32:29,722 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] [2020-07-17 12:32:29,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:32:29,723 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:32:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:32:29,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1448784548, now seen corresponding path program 1 times [2020-07-17 12:32:29,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:32:29,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409139235] [2020-07-17 12:32:29,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:32:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:32:31,797 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:32:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:32:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:32:31,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409139235] [2020-07-17 12:32:31,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:32:31,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:32:31,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433721705] [2020-07-17 12:32:31,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:32:31,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:32:31,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:32:31,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:32:31,969 INFO L87 Difference]: Start difference. First operand 2511 states and 4317 transitions. Second operand 4 states. [2020-07-17 12:32:33,034 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 411 [2020-07-17 12:33:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:33:00,000 INFO L93 Difference]: Finished difference Result 6234 states and 10658 transitions. [2020-07-17 12:33:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:33:00,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 386 [2020-07-17 12:33:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:33:00,032 INFO L225 Difference]: With dead ends: 6234 [2020-07-17 12:33:00,032 INFO L226 Difference]: Without dead ends: 4315 [2020-07-17 12:33:00,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:33:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-07-17 12:33:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4311. [2020-07-17 12:33:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-07-17 12:33:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7334 transitions. [2020-07-17 12:33:00,158 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7334 transitions. Word has length 386 [2020-07-17 12:33:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:33:00,159 INFO L479 AbstractCegarLoop]: Abstraction has 4311 states and 7334 transitions. [2020-07-17 12:33:00,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:33:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7334 transitions. [2020-07-17 12:33:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-17 12:33:00,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:33:00,176 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] [2020-07-17 12:33:00,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:33:00,177 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:33:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:33:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash 533740400, now seen corresponding path program 1 times [2020-07-17 12:33:00,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:33:00,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162706984] [2020-07-17 12:33:00,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:33:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:33:01,453 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:33:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:33:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:33:01,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162706984] [2020-07-17 12:33:01,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:33:01,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:33:01,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816043939] [2020-07-17 12:33:01,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:33:01,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:33:01,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:33:01,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:33:01,589 INFO L87 Difference]: Start difference. First operand 4311 states and 7334 transitions. Second operand 4 states. [2020-07-17 12:33:02,666 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 413 [2020-07-17 12:33:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:33:28,964 INFO L93 Difference]: Finished difference Result 7280 states and 12405 transitions. [2020-07-17 12:33:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:33:28,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2020-07-17 12:33:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:33:28,990 INFO L225 Difference]: With dead ends: 7280 [2020-07-17 12:33:28,990 INFO L226 Difference]: Without dead ends: 5350 [2020-07-17 12:33:28,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:33:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2020-07-17 12:33:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5346. [2020-07-17 12:33:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5346 states. [2020-07-17 12:33:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 9097 transitions. [2020-07-17 12:33:29,146 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 9097 transitions. Word has length 391 [2020-07-17 12:33:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:33:29,147 INFO L479 AbstractCegarLoop]: Abstraction has 5346 states and 9097 transitions. [2020-07-17 12:33:29,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:33:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 9097 transitions. [2020-07-17 12:33:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-07-17 12:33:29,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:33:29,163 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] [2020-07-17 12:33:29,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:33:29,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:33:29,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:33:29,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1980960461, now seen corresponding path program 1 times [2020-07-17 12:33:29,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:33:29,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556025934] [2020-07-17 12:33:29,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:33:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:33:30,535 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:33:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:33:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:33:30,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556025934] [2020-07-17 12:33:30,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:33:30,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:33:30,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523700284] [2020-07-17 12:33:30,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:33:30,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:33:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:33:30,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:33:30,796 INFO L87 Difference]: Start difference. First operand 5346 states and 9097 transitions. Second operand 4 states. [2020-07-17 12:33:31,837 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-17 12:33:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:33:58,966 INFO L93 Difference]: Finished difference Result 14521 states and 24616 transitions. [2020-07-17 12:33:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:33:58,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-07-17 12:33:58,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:33:59,008 INFO L225 Difference]: With dead ends: 14521 [2020-07-17 12:33:59,008 INFO L226 Difference]: Without dead ends: 9795 [2020-07-17 12:33:59,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:33:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2020-07-17 12:33:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 9791. [2020-07-17 12:33:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9791 states. [2020-07-17 12:33:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9791 states to 9791 states and 16577 transitions. [2020-07-17 12:33:59,284 INFO L78 Accepts]: Start accepts. Automaton has 9791 states and 16577 transitions. Word has length 395 [2020-07-17 12:33:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:33:59,284 INFO L479 AbstractCegarLoop]: Abstraction has 9791 states and 16577 transitions. [2020-07-17 12:33:59,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:33:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9791 states and 16577 transitions. [2020-07-17 12:33:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-07-17 12:33:59,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:33:59,303 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] [2020-07-17 12:33:59,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 12:33:59,303 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:33:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:33:59,304 INFO L82 PathProgramCache]: Analyzing trace with hash 155302923, now seen corresponding path program 1 times [2020-07-17 12:33:59,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:33:59,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299913391] [2020-07-17 12:33:59,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:33:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:34:00,563 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:34:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:34:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:34:00,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299913391] [2020-07-17 12:34:00,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:34:00,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:34:00,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599501727] [2020-07-17 12:34:00,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:34:00,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:34:00,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:34:00,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:34:00,725 INFO L87 Difference]: Start difference. First operand 9791 states and 16577 transitions. Second operand 4 states. [2020-07-17 12:34:01,769 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-17 12:34:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:34:29,054 INFO L93 Difference]: Finished difference Result 17611 states and 29837 transitions. [2020-07-17 12:34:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:34:29,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2020-07-17 12:34:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:34:29,091 INFO L225 Difference]: With dead ends: 17611 [2020-07-17 12:34:29,091 INFO L226 Difference]: Without dead ends: 12874 [2020-07-17 12:34:29,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:34:29,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12874 states. [2020-07-17 12:34:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12874 to 12870. [2020-07-17 12:34:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12870 states. [2020-07-17 12:34:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12870 states to 12870 states and 21779 transitions. [2020-07-17 12:34:29,430 INFO L78 Accepts]: Start accepts. Automaton has 12870 states and 21779 transitions. Word has length 400 [2020-07-17 12:34:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:34:29,432 INFO L479 AbstractCegarLoop]: Abstraction has 12870 states and 21779 transitions. [2020-07-17 12:34:29,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:34:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 12870 states and 21779 transitions. [2020-07-17 12:34:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-07-17 12:34:29,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:34:29,453 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] [2020-07-17 12:34:29,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 12:34:29,453 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:34:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:34:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash -571279020, now seen corresponding path program 1 times [2020-07-17 12:34:29,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:34:29,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127058696] [2020-07-17 12:34:29,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:34:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:34:30,726 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:34:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:34:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:34:30,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127058696] [2020-07-17 12:34:30,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:34:30,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:34:30,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037999919] [2020-07-17 12:34:30,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:34:30,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:34:30,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:34:30,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:34:30,864 INFO L87 Difference]: Start difference. First operand 12870 states and 21779 transitions. Second operand 4 states. [2020-07-17 12:34:31,998 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 411 [2020-07-17 12:35:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:35:01,595 INFO L93 Difference]: Finished difference Result 36509 states and 61606 transitions. [2020-07-17 12:35:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:35:01,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2020-07-17 12:35:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:35:01,650 INFO L225 Difference]: With dead ends: 36509 [2020-07-17 12:35:01,650 INFO L226 Difference]: Without dead ends: 24287 [2020-07-17 12:35:01,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:35:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2020-07-17 12:35:02,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 24283. [2020-07-17 12:35:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24283 states. [2020-07-17 12:35:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24283 states to 24283 states and 40885 transitions. [2020-07-17 12:35:02,326 INFO L78 Accepts]: Start accepts. Automaton has 24283 states and 40885 transitions. Word has length 404 [2020-07-17 12:35:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:35:02,327 INFO L479 AbstractCegarLoop]: Abstraction has 24283 states and 40885 transitions. [2020-07-17 12:35:02,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:35:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 24283 states and 40885 transitions. [2020-07-17 12:35:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-17 12:35:02,363 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:35:02,363 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] [2020-07-17 12:35:02,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 12:35:02,364 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:35:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:35:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1914746064, now seen corresponding path program 1 times [2020-07-17 12:35:02,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:35:02,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224254849] [2020-07-17 12:35:02,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:35:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:35:04,740 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:35:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:35:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:35:04,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224254849] [2020-07-17 12:35:04,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:35:04,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:35:04,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112570346] [2020-07-17 12:35:04,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:35:04,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:35:04,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:35:04,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:35:04,918 INFO L87 Difference]: Start difference. First operand 24283 states and 40885 transitions. Second operand 4 states. [2020-07-17 12:35:06,016 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 413 [2020-07-17 12:35:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:35:35,501 INFO L93 Difference]: Finished difference Result 44887 states and 75675 transitions. [2020-07-17 12:35:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:35:35,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-07-17 12:35:35,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:35:35,566 INFO L225 Difference]: With dead ends: 44887 [2020-07-17 12:35:35,567 INFO L226 Difference]: Without dead ends: 32654 [2020-07-17 12:35:35,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:35:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32654 states. [2020-07-17 12:35:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32654 to 32650. [2020-07-17 12:35:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32650 states. [2020-07-17 12:35:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32650 states to 32650 states and 54937 transitions. [2020-07-17 12:35:36,320 INFO L78 Accepts]: Start accepts. Automaton has 32650 states and 54937 transitions. Word has length 409 [2020-07-17 12:35:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:35:36,321 INFO L479 AbstractCegarLoop]: Abstraction has 32650 states and 54937 transitions. [2020-07-17 12:35:36,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:35:36,321 INFO L276 IsEmpty]: Start isEmpty. Operand 32650 states and 54937 transitions. [2020-07-17 12:35:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-07-17 12:35:36,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:35:36,351 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] [2020-07-17 12:35:36,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 12:35:36,352 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:35:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:35:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1002353059, now seen corresponding path program 1 times [2020-07-17 12:35:36,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:35:36,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772796197] [2020-07-17 12:35:36,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:35:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:35:37,740 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:35:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:35:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:35:38,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772796197] [2020-07-17 12:35:38,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:35:38,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:35:38,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508014977] [2020-07-17 12:35:38,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:35:38,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:35:38,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:35:38,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:35:38,084 INFO L87 Difference]: Start difference. First operand 32650 states and 54937 transitions. Second operand 4 states. [2020-07-17 12:35:39,175 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 411 [2020-07-17 12:36:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:36:10,287 INFO L93 Difference]: Finished difference Result 94233 states and 158132 transitions. [2020-07-17 12:36:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:36:10,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2020-07-17 12:36:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:36:10,378 INFO L225 Difference]: With dead ends: 94233 [2020-07-17 12:36:10,379 INFO L226 Difference]: Without dead ends: 62259 [2020-07-17 12:36:10,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:36:10,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62259 states. [2020-07-17 12:36:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62259 to 62255. [2020-07-17 12:36:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62255 states. [2020-07-17 12:36:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62255 states to 62255 states and 104167 transitions. [2020-07-17 12:36:11,668 INFO L78 Accepts]: Start accepts. Automaton has 62255 states and 104167 transitions. Word has length 413 [2020-07-17 12:36:11,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:36:11,669 INFO L479 AbstractCegarLoop]: Abstraction has 62255 states and 104167 transitions. [2020-07-17 12:36:11,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:36:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 62255 states and 104167 transitions. [2020-07-17 12:36:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-07-17 12:36:11,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:36:11,718 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] [2020-07-17 12:36:11,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 12:36:11,719 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:36:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:36:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash 339386235, now seen corresponding path program 1 times [2020-07-17 12:36:11,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:36:11,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146769628] [2020-07-17 12:36:11,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:36:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:36:14,509 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:36:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:36:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:36:14,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146769628] [2020-07-17 12:36:14,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:36:14,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:36:14,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423142126] [2020-07-17 12:36:14,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:36:14,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:36:14,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:36:14,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:36:14,633 INFO L87 Difference]: Start difference. First operand 62255 states and 104167 transitions. Second operand 4 states. [2020-07-17 12:36:15,776 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 413 [2020-07-17 12:36:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:36:46,349 INFO L93 Difference]: Finished difference Result 116011 states and 194409 transitions. [2020-07-17 12:36:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:36:46,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-07-17 12:36:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:36:46,458 INFO L225 Difference]: With dead ends: 116011 [2020-07-17 12:36:46,459 INFO L226 Difference]: Without dead ends: 84026 [2020-07-17 12:36:46,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:36:46,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2020-07-17 12:36:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 84022. [2020-07-17 12:36:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84022 states. [2020-07-17 12:36:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84022 states to 84022 states and 140431 transitions. [2020-07-17 12:36:47,982 INFO L78 Accepts]: Start accepts. Automaton has 84022 states and 140431 transitions. Word has length 418 [2020-07-17 12:36:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:36:47,983 INFO L479 AbstractCegarLoop]: Abstraction has 84022 states and 140431 transitions. [2020-07-17 12:36:47,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:36:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 84022 states and 140431 transitions. [2020-07-17 12:36:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-07-17 12:36:48,065 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:36:48,065 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] [2020-07-17 12:36:48,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 12:36:48,066 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:36:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:36:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1033340836, now seen corresponding path program 1 times [2020-07-17 12:36:48,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:36:48,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723251696] [2020-07-17 12:36:48,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:36:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:36:49,435 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:36:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:36:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:36:49,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723251696] [2020-07-17 12:36:49,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:36:49,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:36:49,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147354860] [2020-07-17 12:36:49,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:36:49,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:36:49,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:36:49,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:36:49,904 INFO L87 Difference]: Start difference. First operand 84022 states and 140431 transitions. Second operand 4 states. [2020-07-17 12:36:51,005 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 411 [2020-07-17 12:37:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:37:24,563 INFO L93 Difference]: Finished difference Result 243661 states and 406034 transitions. [2020-07-17 12:37:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:37:24,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2020-07-17 12:37:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:37:24,795 INFO L225 Difference]: With dead ends: 243661 [2020-07-17 12:37:24,796 INFO L226 Difference]: Without dead ends: 160343 [2020-07-17 12:37:24,885 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 [2020-07-17 12:37:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160343 states. [2020-07-17 12:37:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160343 to 160339. [2020-07-17 12:37:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160339 states. [2020-07-17 12:37:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160339 states to 160339 states and 266233 transitions. [2020-07-17 12:37:31,396 INFO L78 Accepts]: Start accepts. Automaton has 160339 states and 266233 transitions. Word has length 422 [2020-07-17 12:37:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:37:31,396 INFO L479 AbstractCegarLoop]: Abstraction has 160339 states and 266233 transitions. [2020-07-17 12:37:31,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:37:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 160339 states and 266233 transitions. [2020-07-17 12:37:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-07-17 12:37:31,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:37:31,513 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] [2020-07-17 12:37:31,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 12:37:31,514 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:37:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:37:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -986262280, now seen corresponding path program 1 times [2020-07-17 12:37:31,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:37:31,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167717863] [2020-07-17 12:37:31,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:37:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:37:32,861 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:37:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:37:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:37:32,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167717863] [2020-07-17 12:37:32,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:37:32,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:37:32,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135248998] [2020-07-17 12:37:32,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:37:32,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:37:32,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:37:32,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:37:32,983 INFO L87 Difference]: Start difference. First operand 160339 states and 266233 transitions. Second operand 4 states. [2020-07-17 12:37:34,722 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 413 [2020-07-17 12:38:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:38:08,097 INFO L93 Difference]: Finished difference Result 298271 states and 495971 transitions. [2020-07-17 12:38:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:38:08,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2020-07-17 12:38:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:38:08,368 INFO L225 Difference]: With dead ends: 298271 [2020-07-17 12:38:08,368 INFO L226 Difference]: Without dead ends: 214942 [2020-07-17 12:38:12,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:38:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214942 states. [2020-07-17 12:38:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214942 to 214938. [2020-07-17 12:38:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214938 states. [2020-07-17 12:38:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214938 states to 214938 states and 356165 transitions. [2020-07-17 12:38:16,969 INFO L78 Accepts]: Start accepts. Automaton has 214938 states and 356165 transitions. Word has length 427 [2020-07-17 12:38:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:38:16,969 INFO L479 AbstractCegarLoop]: Abstraction has 214938 states and 356165 transitions. [2020-07-17 12:38:16,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:38:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 214938 states and 356165 transitions. [2020-07-17 12:38:17,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-07-17 12:38:17,120 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:38:17,120 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] [2020-07-17 12:38:17,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 12:38:17,121 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:38:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:38:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1162904133, now seen corresponding path program 1 times [2020-07-17 12:38:17,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:38:17,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269517608] [2020-07-17 12:38:17,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:38:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:38:18,645 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:38:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:38:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:38:18,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269517608] [2020-07-17 12:38:18,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:38:18,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 12:38:18,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359862822] [2020-07-17 12:38:18,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:38:18,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:38:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:38:18,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:38:18,809 INFO L87 Difference]: Start difference. First operand 214938 states and 356165 transitions. Second operand 8 states. [2020-07-17 12:38:20,006 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 417 [2020-07-17 12:39:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:39:48,376 INFO L93 Difference]: Finished difference Result 1123724 states and 1865902 transitions. [2020-07-17 12:39:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:39:48,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-07-17 12:39:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:39:49,660 INFO L225 Difference]: With dead ends: 1123724 [2020-07-17 12:39:49,660 INFO L226 Difference]: Without dead ends: 909492 [2020-07-17 12:39:55,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-07-17 12:39:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909492 states. [2020-07-17 12:40:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909492 to 427813. [2020-07-17 12:40:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427813 states. [2020-07-17 12:40:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427813 states to 427813 states and 706031 transitions. [2020-07-17 12:40:16,907 INFO L78 Accepts]: Start accepts. Automaton has 427813 states and 706031 transitions. Word has length 431 [2020-07-17 12:40:16,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:40:16,907 INFO L479 AbstractCegarLoop]: Abstraction has 427813 states and 706031 transitions. [2020-07-17 12:40:16,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:40:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 427813 states and 706031 transitions. [2020-07-17 12:40:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-17 12:40:17,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:40:17,222 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] [2020-07-17 12:40:17,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 12:40:17,223 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:40:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:40:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash -657666499, now seen corresponding path program 1 times [2020-07-17 12:40:17,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:40:17,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539894873] [2020-07-17 12:40:17,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:40:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:40:19,885 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:40:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:40:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:40:20,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539894873] [2020-07-17 12:40:20,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:40:20,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:40:20,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890730468] [2020-07-17 12:40:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:40:20,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:40:20,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:40:20,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:40:20,017 INFO L87 Difference]: Start difference. First operand 427813 states and 706031 transitions. Second operand 5 states. [2020-07-17 12:40:21,205 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 413 [2020-07-17 12:41:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:41:25,800 INFO L93 Difference]: Finished difference Result 1272473 states and 2107267 transitions. [2020-07-17 12:41:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:41:25,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2020-07-17 12:41:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:41:27,068 INFO L225 Difference]: With dead ends: 1272473 [2020-07-17 12:41:27,068 INFO L226 Difference]: Without dead ends: 845366 [2020-07-17 12:41:27,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:41:28,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845366 states. [2020-07-17 12:42:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845366 to 705994. [2020-07-17 12:42:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705994 states. [2020-07-17 12:42:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705994 states to 705994 states and 1165461 transitions. [2020-07-17 12:42:12,302 INFO L78 Accepts]: Start accepts. Automaton has 705994 states and 1165461 transitions. Word has length 433 [2020-07-17 12:42:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:42:12,302 INFO L479 AbstractCegarLoop]: Abstraction has 705994 states and 1165461 transitions. [2020-07-17 12:42:12,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:42:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 705994 states and 1165461 transitions. [2020-07-17 12:42:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-17 12:42:14,191 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:42:14,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:42:14,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 12:42:14,192 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:42:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:42:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash -628885910, now seen corresponding path program 1 times [2020-07-17 12:42:14,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:42:14,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224515944] [2020-07-17 12:42:14,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:42:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:42:15,570 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-17 12:42:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:42:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:42:15,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224515944] [2020-07-17 12:42:15,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:42:15,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:42:15,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246389954] [2020-07-17 12:42:15,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:42:15,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:42:15,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:42:15,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:42:15,696 INFO L87 Difference]: Start difference. First operand 705994 states and 1165461 transitions. Second operand 5 states. [2020-07-17 12:42:23,291 WARN L193 SmtUtils]: Spent 7.52 s on a formula simplification that was a NOOP. DAG size: 413