/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 0.1.25-3af5e1f [2020-09-04 14:08:52,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 14:08:52,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 14:08:52,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 14:08:52,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 14:08:52,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 14:08:52,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 14:08:52,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 14:08:52,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 14:08:52,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 14:08:52,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 14:08:52,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 14:08:52,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 14:08:52,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 14:08:52,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 14:08:52,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 14:08:52,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 14:08:52,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 14:08:52,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 14:08:52,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 14:08:52,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 14:08:52,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 14:08:52,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 14:08:52,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 14:08:52,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 14:08:52,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 14:08:52,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 14:08:52,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 14:08:52,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 14:08:52,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 14:08:52,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 14:08:52,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 14:08:52,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 14:08:52,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 14:08:52,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 14:08:52,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 14:08:52,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 14:08:52,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 14:08:52,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 14:08:52,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 14:08:52,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 14:08:52,851 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 14:08:52,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 14:08:52,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 14:08:52,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 14:08:52,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 14:08:52,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 14:08:52,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 14:08:52,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 14:08:52,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 14:08:52,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 14:08:52,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 14:08:52,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 14:08:52,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 14:08:52,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 14:08:52,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 14:08:52,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 14:08:52,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 14:08:52,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 14:08:52,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 14:08:52,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 14:08:52,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 14:08:52,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 14:08:52,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 14:08:52,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 14:08:52,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 14:08:52,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 14:08:53,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 14:08:53,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 14:08:53,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 14:08:53,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 14:08:53,406 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 14:08:53,408 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-04 14:08:53,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e26aac2a/254a0623362c4b5fa445261e54a590e8/FLAGe6bb7f18f [2020-09-04 14:08:54,462 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 14:08:54,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-04 14:08:54,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e26aac2a/254a0623362c4b5fa445261e54a590e8/FLAGe6bb7f18f [2020-09-04 14:08:54,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e26aac2a/254a0623362c4b5fa445261e54a590e8 [2020-09-04 14:08:54,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 14:08:54,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 14:08:54,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 14:08:54,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 14:08:54,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 14:08:54,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 02:08:54" (1/1) ... [2020-09-04 14:08:55,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c11e252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:54, skipping insertion in model container [2020-09-04 14:08:55,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 02:08:54" (1/1) ... [2020-09-04 14:08:55,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 14:08:55,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 14:08:57,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 14:08:57,984 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 14:08:59,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 14:08:59,775 INFO L208 MainTranslator]: Completed translation [2020-09-04 14:08:59,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59 WrapperNode [2020-09-04 14:08:59,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 14:08:59,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 14:08:59,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 14:08:59,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 14:08:59,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... [2020-09-04 14:08:59,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... [2020-09-04 14:08:59,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... [2020-09-04 14:08:59,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... [2020-09-04 14:08:59,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... [2020-09-04 14:09:00,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... [2020-09-04 14:09:00,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... [2020-09-04 14:09:00,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 14:09:00,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 14:09:00,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 14:09:00,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 14:09:00,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 14:09:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 14:09:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 14:09:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 14:09:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 14:09:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 14:09:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 14:09:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 14:09:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-04 14:09:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 14:09:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 14:09:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-04 14:09:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-04 14:09:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-04 14:09:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-04 14:09:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-04 14:09:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-04 14:09:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-04 14:09:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-04 14:09:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-04 14:09:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 14:09:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 14:09:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 14:09:07,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 14:09:07,185 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 14:09:07,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 02:09:07 BoogieIcfgContainer [2020-09-04 14:09:07,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 14:09:07,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 14:09:07,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 14:09:07,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 14:09:07,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 02:08:54" (1/3) ... [2020-09-04 14:09:07,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316cc308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 02:09:07, skipping insertion in model container [2020-09-04 14:09:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:08:59" (2/3) ... [2020-09-04 14:09:07,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316cc308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 02:09:07, skipping insertion in model container [2020-09-04 14:09:07,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 02:09:07" (3/3) ... [2020-09-04 14:09:07,219 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-04 14:09:07,231 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 14:09:07,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-04 14:09:07,267 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-04 14:09:07,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 14:09:07,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 14:09:07,311 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 14:09:07,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 14:09:07,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 14:09:07,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 14:09:07,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 14:09:07,312 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 14:09:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states. [2020-09-04 14:09:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-09-04 14:09:07,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:09:07,431 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] [2020-09-04 14:09:07,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:09:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:09:07,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1936618047, now seen corresponding path program 1 times [2020-09-04 14:09:07,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:09:07,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261387745] [2020-09-04 14:09:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:09:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:09:09,672 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:09:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:09:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:09:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:09:09,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261387745] [2020-09-04 14:09:09,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:09:09,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:09:09,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227737759] [2020-09-04 14:09:09,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:09:09,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:09:09,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:09:09,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:09:09,944 INFO L87 Difference]: Start difference. First operand 2515 states. Second operand 5 states. [2020-09-04 14:09:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:09:29,361 INFO L93 Difference]: Finished difference Result 4483 states and 7776 transitions. [2020-09-04 14:09:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 14:09:29,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-09-04 14:09:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:09:29,404 INFO L225 Difference]: With dead ends: 4483 [2020-09-04 14:09:29,405 INFO L226 Difference]: Without dead ends: 2511 [2020-09-04 14:09:29,417 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 [2020-09-04 14:09:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-09-04 14:09:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2020-09-04 14:09:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-09-04 14:09:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4317 transitions. [2020-09-04 14:09:29,590 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4317 transitions. Word has length 322 [2020-09-04 14:09:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:09:29,592 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 4317 transitions. [2020-09-04 14:09:29,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:09:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4317 transitions. [2020-09-04 14:09:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-09-04 14:09:29,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:09:29,606 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] [2020-09-04 14:09:29,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 14:09:29,607 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:09:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:09:29,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1448784548, now seen corresponding path program 1 times [2020-09-04 14:09:29,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:09:29,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29307959] [2020-09-04 14:09:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:09:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:09:31,065 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:09:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:09:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:09:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:09:31,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29307959] [2020-09-04 14:09:31,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:09:31,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:09:31,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743041087] [2020-09-04 14:09:31,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:09:31,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:09:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:09:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:09:31,347 INFO L87 Difference]: Start difference. First operand 2511 states and 4317 transitions. Second operand 4 states. [2020-09-04 14:09:32,650 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 411 [2020-09-04 14:10:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:10:02,009 INFO L93 Difference]: Finished difference Result 6234 states and 10658 transitions. [2020-09-04 14:10:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:10:02,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 386 [2020-09-04 14:10:02,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:10:02,036 INFO L225 Difference]: With dead ends: 6234 [2020-09-04 14:10:02,036 INFO L226 Difference]: Without dead ends: 4315 [2020-09-04 14:10:02,041 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 [2020-09-04 14:10:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-09-04 14:10:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4311. [2020-09-04 14:10:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-09-04 14:10:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7334 transitions. [2020-09-04 14:10:02,154 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7334 transitions. Word has length 386 [2020-09-04 14:10:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:10:02,155 INFO L479 AbstractCegarLoop]: Abstraction has 4311 states and 7334 transitions. [2020-09-04 14:10:02,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:10:02,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7334 transitions. [2020-09-04 14:10:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-09-04 14:10:02,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:10:02,172 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] [2020-09-04 14:10:02,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 14:10:02,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:10:02,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:10:02,173 INFO L82 PathProgramCache]: Analyzing trace with hash 533740400, now seen corresponding path program 1 times [2020-09-04 14:10:02,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:10:02,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043194195] [2020-09-04 14:10:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:10:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:10:03,708 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:10:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:10:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:10:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:10:03,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043194195] [2020-09-04 14:10:03,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:10:03,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:10:03,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547853332] [2020-09-04 14:10:03,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:10:03,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:10:03,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:10:03,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:10:03,854 INFO L87 Difference]: Start difference. First operand 4311 states and 7334 transitions. Second operand 4 states. [2020-09-04 14:10:04,954 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 413 [2020-09-04 14:10:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:10:33,470 INFO L93 Difference]: Finished difference Result 7280 states and 12405 transitions. [2020-09-04 14:10:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:10:33,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2020-09-04 14:10:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:10:33,500 INFO L225 Difference]: With dead ends: 7280 [2020-09-04 14:10:33,500 INFO L226 Difference]: Without dead ends: 5350 [2020-09-04 14:10:33,506 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 [2020-09-04 14:10:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2020-09-04 14:10:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5346. [2020-09-04 14:10:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5346 states. [2020-09-04 14:10:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 9097 transitions. [2020-09-04 14:10:33,727 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 9097 transitions. Word has length 391 [2020-09-04 14:10:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:10:33,728 INFO L479 AbstractCegarLoop]: Abstraction has 5346 states and 9097 transitions. [2020-09-04 14:10:33,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:10:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 9097 transitions. [2020-09-04 14:10:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-09-04 14:10:33,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:10:33,747 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] [2020-09-04 14:10:33,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 14:10:33,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:10:33,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:10:33,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1980960461, now seen corresponding path program 1 times [2020-09-04 14:10:33,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:10:33,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123058615] [2020-09-04 14:10:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:10:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:10:35,252 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:10:35,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:10:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:10:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:10:35,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123058615] [2020-09-04 14:10:35,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:10:35,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:10:35,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271792966] [2020-09-04 14:10:35,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:10:35,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:10:35,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:10:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:10:35,482 INFO L87 Difference]: Start difference. First operand 5346 states and 9097 transitions. Second operand 4 states. [2020-09-04 14:10:36,539 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-09-04 14:11:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:11:06,768 INFO L93 Difference]: Finished difference Result 14521 states and 24616 transitions. [2020-09-04 14:11:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:11:06,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-09-04 14:11:06,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:11:06,818 INFO L225 Difference]: With dead ends: 14521 [2020-09-04 14:11:06,819 INFO L226 Difference]: Without dead ends: 9795 [2020-09-04 14:11:06,830 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 [2020-09-04 14:11:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2020-09-04 14:11:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 9791. [2020-09-04 14:11:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9791 states. [2020-09-04 14:11:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9791 states to 9791 states and 16577 transitions. [2020-09-04 14:11:07,109 INFO L78 Accepts]: Start accepts. Automaton has 9791 states and 16577 transitions. Word has length 395 [2020-09-04 14:11:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:11:07,110 INFO L479 AbstractCegarLoop]: Abstraction has 9791 states and 16577 transitions. [2020-09-04 14:11:07,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:11:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 9791 states and 16577 transitions. [2020-09-04 14:11:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-09-04 14:11:07,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:11:07,133 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] [2020-09-04 14:11:07,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 14:11:07,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:11:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:11:07,134 INFO L82 PathProgramCache]: Analyzing trace with hash 155302923, now seen corresponding path program 1 times [2020-09-04 14:11:07,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:11:07,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809006515] [2020-09-04 14:11:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:11:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:11:08,674 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:11:08,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:11:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:11:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:11:08,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809006515] [2020-09-04 14:11:08,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:11:08,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:11:08,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035211673] [2020-09-04 14:11:08,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:11:08,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:11:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:11:08,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:11:08,854 INFO L87 Difference]: Start difference. First operand 9791 states and 16577 transitions. Second operand 4 states. [2020-09-04 14:11:09,885 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-09-04 14:11:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:11:39,951 INFO L93 Difference]: Finished difference Result 17611 states and 29837 transitions. [2020-09-04 14:11:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:11:39,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2020-09-04 14:11:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:11:39,989 INFO L225 Difference]: With dead ends: 17611 [2020-09-04 14:11:39,989 INFO L226 Difference]: Without dead ends: 12874 [2020-09-04 14:11:40,002 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 [2020-09-04 14:11:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12874 states. [2020-09-04 14:11:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12874 to 12870. [2020-09-04 14:11:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12870 states. [2020-09-04 14:11:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12870 states to 12870 states and 21779 transitions. [2020-09-04 14:11:40,378 INFO L78 Accepts]: Start accepts. Automaton has 12870 states and 21779 transitions. Word has length 400 [2020-09-04 14:11:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:11:40,379 INFO L479 AbstractCegarLoop]: Abstraction has 12870 states and 21779 transitions. [2020-09-04 14:11:40,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:11:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12870 states and 21779 transitions. [2020-09-04 14:11:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-09-04 14:11:40,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:11:40,401 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] [2020-09-04 14:11:40,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 14:11:40,401 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:11:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:11:40,402 INFO L82 PathProgramCache]: Analyzing trace with hash -571279020, now seen corresponding path program 1 times [2020-09-04 14:11:40,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:11:40,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872979270] [2020-09-04 14:11:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:11:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:11:41,862 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:11:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:11:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:11:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:11:42,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872979270] [2020-09-04 14:11:42,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:11:42,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:11:42,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024023599] [2020-09-04 14:11:42,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:11:42,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:11:42,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:11:42,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:11:42,091 INFO L87 Difference]: Start difference. First operand 12870 states and 21779 transitions. Second operand 4 states. [2020-09-04 14:11:43,128 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-09-04 14:12:14,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:12:14,611 INFO L93 Difference]: Finished difference Result 36509 states and 61606 transitions. [2020-09-04 14:12:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:12:14,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2020-09-04 14:12:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:12:14,669 INFO L225 Difference]: With dead ends: 36509 [2020-09-04 14:12:14,669 INFO L226 Difference]: Without dead ends: 24287 [2020-09-04 14:12:14,698 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 [2020-09-04 14:12:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2020-09-04 14:12:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 24283. [2020-09-04 14:12:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24283 states. [2020-09-04 14:12:15,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24283 states to 24283 states and 40885 transitions. [2020-09-04 14:12:15,413 INFO L78 Accepts]: Start accepts. Automaton has 24283 states and 40885 transitions. Word has length 404 [2020-09-04 14:12:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:12:15,414 INFO L479 AbstractCegarLoop]: Abstraction has 24283 states and 40885 transitions. [2020-09-04 14:12:15,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:12:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 24283 states and 40885 transitions. [2020-09-04 14:12:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-04 14:12:15,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:12:15,451 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] [2020-09-04 14:12:15,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 14:12:15,451 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:12:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:12:15,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1914746064, now seen corresponding path program 1 times [2020-09-04 14:12:15,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:12:15,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292681114] [2020-09-04 14:12:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:12:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:12:16,915 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:12:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:12:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:12:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:12:17,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292681114] [2020-09-04 14:12:17,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:12:17,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:12:17,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032745450] [2020-09-04 14:12:17,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:12:17,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:12:17,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:12:17,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:12:17,067 INFO L87 Difference]: Start difference. First operand 24283 states and 40885 transitions. Second operand 4 states. [2020-09-04 14:12:18,356 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 413 [2020-09-04 14:12:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:12:49,545 INFO L93 Difference]: Finished difference Result 44887 states and 75675 transitions. [2020-09-04 14:12:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:12:49,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-09-04 14:12:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:12:49,619 INFO L225 Difference]: With dead ends: 44887 [2020-09-04 14:12:49,620 INFO L226 Difference]: Without dead ends: 32654 [2020-09-04 14:12:49,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:12:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32654 states. [2020-09-04 14:12:51,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32654 to 32650. [2020-09-04 14:12:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32650 states. [2020-09-04 14:12:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32650 states to 32650 states and 54937 transitions. [2020-09-04 14:12:51,743 INFO L78 Accepts]: Start accepts. Automaton has 32650 states and 54937 transitions. Word has length 409 [2020-09-04 14:12:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:12:51,744 INFO L479 AbstractCegarLoop]: Abstraction has 32650 states and 54937 transitions. [2020-09-04 14:12:51,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:12:51,744 INFO L276 IsEmpty]: Start isEmpty. Operand 32650 states and 54937 transitions. [2020-09-04 14:12:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-09-04 14:12:51,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:12:51,785 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] [2020-09-04 14:12:51,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 14:12:51,786 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:12:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:12:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1002353059, now seen corresponding path program 1 times [2020-09-04 14:12:51,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:12:51,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803353754] [2020-09-04 14:12:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:12:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:12:53,149 WARN L193 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:12:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:12:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:12:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:12:53,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803353754] [2020-09-04 14:12:53,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:12:53,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:12:53,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996740648] [2020-09-04 14:12:53,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:12:53,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:12:53,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:12:53,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:12:53,401 INFO L87 Difference]: Start difference. First operand 32650 states and 54937 transitions. Second operand 4 states. [2020-09-04 14:12:54,472 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 411 [2020-09-04 14:13:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:13:27,703 INFO L93 Difference]: Finished difference Result 94233 states and 158132 transitions. [2020-09-04 14:13:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:13:27,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2020-09-04 14:13:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:13:27,788 INFO L225 Difference]: With dead ends: 94233 [2020-09-04 14:13:27,788 INFO L226 Difference]: Without dead ends: 62259 [2020-09-04 14:13:27,849 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 [2020-09-04 14:13:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62259 states. [2020-09-04 14:13:28,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62259 to 62255. [2020-09-04 14:13:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62255 states. [2020-09-04 14:13:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62255 states to 62255 states and 104167 transitions. [2020-09-04 14:13:29,036 INFO L78 Accepts]: Start accepts. Automaton has 62255 states and 104167 transitions. Word has length 413 [2020-09-04 14:13:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:13:29,036 INFO L479 AbstractCegarLoop]: Abstraction has 62255 states and 104167 transitions. [2020-09-04 14:13:29,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:13:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 62255 states and 104167 transitions. [2020-09-04 14:13:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-04 14:13:29,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:13:29,081 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] [2020-09-04 14:13:29,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 14:13:29,082 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:13:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:13:29,082 INFO L82 PathProgramCache]: Analyzing trace with hash 339386235, now seen corresponding path program 1 times [2020-09-04 14:13:29,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:13:29,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640152883] [2020-09-04 14:13:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:13:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:13:30,912 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:13:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:13:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:13:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:13:31,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640152883] [2020-09-04 14:13:31,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:13:31,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:13:31,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476704132] [2020-09-04 14:13:31,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:13:31,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:13:31,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:13:31,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:13:31,151 INFO L87 Difference]: Start difference. First operand 62255 states and 104167 transitions. Second operand 4 states. [2020-09-04 14:13:32,248 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 413 [2020-09-04 14:14:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:14:05,330 INFO L93 Difference]: Finished difference Result 116011 states and 194409 transitions. [2020-09-04 14:14:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:14:05,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-09-04 14:14:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:14:05,416 INFO L225 Difference]: With dead ends: 116011 [2020-09-04 14:14:05,416 INFO L226 Difference]: Without dead ends: 84026 [2020-09-04 14:14:05,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:14:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2020-09-04 14:14:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 84022. [2020-09-04 14:14:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84022 states. [2020-09-04 14:14:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84022 states to 84022 states and 140431 transitions. [2020-09-04 14:14:08,908 INFO L78 Accepts]: Start accepts. Automaton has 84022 states and 140431 transitions. Word has length 418 [2020-09-04 14:14:08,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:14:08,909 INFO L479 AbstractCegarLoop]: Abstraction has 84022 states and 140431 transitions. [2020-09-04 14:14:08,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:14:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 84022 states and 140431 transitions. [2020-09-04 14:14:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-09-04 14:14:08,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:14:08,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 14:14:08,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 14:14:08,977 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:14:08,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:14:08,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1033340836, now seen corresponding path program 1 times [2020-09-04 14:14:08,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:14:08,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236025753] [2020-09-04 14:14:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:14:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:14:10,391 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:14:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:14:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:14:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:14:10,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236025753] [2020-09-04 14:14:10,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:14:10,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:14:10,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071664838] [2020-09-04 14:14:10,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:14:10,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:14:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:14:10,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:14:10,623 INFO L87 Difference]: Start difference. First operand 84022 states and 140431 transitions. Second operand 4 states. [2020-09-04 14:14:11,671 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-09-04 14:14:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:14:46,798 INFO L93 Difference]: Finished difference Result 243661 states and 406034 transitions. [2020-09-04 14:14:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:14:46,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2020-09-04 14:14:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:14:46,965 INFO L225 Difference]: With dead ends: 243661 [2020-09-04 14:14:46,965 INFO L226 Difference]: Without dead ends: 160343 [2020-09-04 14:14:47,044 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 [2020-09-04 14:14:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160343 states. [2020-09-04 14:14:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160343 to 160339. [2020-09-04 14:14:53,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160339 states. [2020-09-04 14:14:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160339 states to 160339 states and 266233 transitions. [2020-09-04 14:14:54,144 INFO L78 Accepts]: Start accepts. Automaton has 160339 states and 266233 transitions. Word has length 422 [2020-09-04 14:14:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:14:54,145 INFO L479 AbstractCegarLoop]: Abstraction has 160339 states and 266233 transitions. [2020-09-04 14:14:54,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:14:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 160339 states and 266233 transitions. [2020-09-04 14:14:54,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-09-04 14:14:54,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:14:54,243 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] [2020-09-04 14:14:54,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 14:14:54,243 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:14:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:14:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash -986262280, now seen corresponding path program 1 times [2020-09-04 14:14:54,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:14:54,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179286701] [2020-09-04 14:14:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:14:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:14:55,632 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:14:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:14:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:14:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:14:56,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179286701] [2020-09-04 14:14:56,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:14:56,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:14:56,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849594572] [2020-09-04 14:14:56,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:14:56,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:14:56,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:14:56,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:14:56,430 INFO L87 Difference]: Start difference. First operand 160339 states and 266233 transitions. Second operand 4 states. [2020-09-04 14:14:57,588 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 413 [2020-09-04 14:15:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:15:34,285 INFO L93 Difference]: Finished difference Result 298271 states and 495971 transitions. [2020-09-04 14:15:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:15:34,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2020-09-04 14:15:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:15:34,501 INFO L225 Difference]: With dead ends: 298271 [2020-09-04 14:15:34,502 INFO L226 Difference]: Without dead ends: 214942 [2020-09-04 14:15:34,576 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 [2020-09-04 14:15:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214942 states. [2020-09-04 14:15:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214942 to 214938. [2020-09-04 14:15:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214938 states. [2020-09-04 14:15:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214938 states to 214938 states and 356165 transitions. [2020-09-04 14:15:42,473 INFO L78 Accepts]: Start accepts. Automaton has 214938 states and 356165 transitions. Word has length 427 [2020-09-04 14:15:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:15:42,474 INFO L479 AbstractCegarLoop]: Abstraction has 214938 states and 356165 transitions. [2020-09-04 14:15:42,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:15:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 214938 states and 356165 transitions. [2020-09-04 14:15:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-09-04 14:15:42,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:15:42,599 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] [2020-09-04 14:15:42,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 14:15:42,599 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:15:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:15:42,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1162904133, now seen corresponding path program 1 times [2020-09-04 14:15:42,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:15:42,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924510172] [2020-09-04 14:15:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:15:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:15:44,088 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:15:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:15:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:15:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:15:44,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924510172] [2020-09-04 14:15:44,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:15:44,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 14:15:44,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30094835] [2020-09-04 14:15:44,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 14:15:44,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:15:44,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 14:15:44,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 14:15:44,909 INFO L87 Difference]: Start difference. First operand 214938 states and 356165 transitions. Second operand 8 states. [2020-09-04 14:15:46,111 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 417 [2020-09-04 14:17:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:17:17,653 INFO L93 Difference]: Finished difference Result 1123724 states and 1865902 transitions. [2020-09-04 14:17:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 14:17:17,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-09-04 14:17:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:17:18,941 INFO L225 Difference]: With dead ends: 1123724 [2020-09-04 14:17:18,941 INFO L226 Difference]: Without dead ends: 909492 [2020-09-04 14:17:19,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-09-04 14:17:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909492 states. [2020-09-04 14:17:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909492 to 427813. [2020-09-04 14:17:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427813 states. [2020-09-04 14:17:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427813 states to 427813 states and 706031 transitions. [2020-09-04 14:17:49,742 INFO L78 Accepts]: Start accepts. Automaton has 427813 states and 706031 transitions. Word has length 431 [2020-09-04 14:17:49,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:17:49,743 INFO L479 AbstractCegarLoop]: Abstraction has 427813 states and 706031 transitions. [2020-09-04 14:17:49,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 14:17:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 427813 states and 706031 transitions. [2020-09-04 14:17:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-09-04 14:17:50,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:17:50,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 14:17:50,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 14:17:50,035 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:17:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:17:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash -657666499, now seen corresponding path program 1 times [2020-09-04 14:17:50,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:17:50,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236745527] [2020-09-04 14:17:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:17:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:17:51,855 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:17:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:17:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:17:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:17:51,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236745527] [2020-09-04 14:17:51,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:17:51,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:17:51,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544898044] [2020-09-04 14:17:51,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:17:51,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:17:51,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:17:51,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:17:51,993 INFO L87 Difference]: Start difference. First operand 427813 states and 706031 transitions. Second operand 5 states. [2020-09-04 14:17:53,215 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 413 [2020-09-04 14:18:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:18:54,933 INFO L93 Difference]: Finished difference Result 1272473 states and 2107267 transitions. [2020-09-04 14:18:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 14:18:54,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2020-09-04 14:18:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:18:56,162 INFO L225 Difference]: With dead ends: 1272473 [2020-09-04 14:18:56,162 INFO L226 Difference]: Without dead ends: 845366 [2020-09-04 14:18:56,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-04 14:18:57,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845366 states. [2020-09-04 14:19:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845366 to 705994. [2020-09-04 14:19:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705994 states. [2020-09-04 14:19:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705994 states to 705994 states and 1165461 transitions. [2020-09-04 14:19:53,616 INFO L78 Accepts]: Start accepts. Automaton has 705994 states and 1165461 transitions. Word has length 433 [2020-09-04 14:19:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:19:53,616 INFO L479 AbstractCegarLoop]: Abstraction has 705994 states and 1165461 transitions. [2020-09-04 14:19:53,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:19:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 705994 states and 1165461 transitions. [2020-09-04 14:19:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-09-04 14:19:55,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:19:55,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 14:19:55,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 14:19:55,136 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:19:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:19:55,137 INFO L82 PathProgramCache]: Analyzing trace with hash -628885910, now seen corresponding path program 1 times [2020-09-04 14:19:55,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:19:55,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864861484] [2020-09-04 14:19:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:19:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:19:56,648 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-04 14:19:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:19:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:19:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:19:56,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864861484] [2020-09-04 14:19:56,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:19:56,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:19:56,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830545567] [2020-09-04 14:19:56,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:19:56,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:19:56,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:19:56,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:19:56,800 INFO L87 Difference]: Start difference. First operand 705994 states and 1165461 transitions. Second operand 5 states. [2020-09-04 14:19:58,665 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 413