/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:30:43,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:30:43,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:30:43,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:30:43,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:30:43,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:30:43,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:30:43,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:30:43,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:30:43,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:30:43,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:30:43,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:30:43,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:30:43,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:30:43,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:30:43,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:30:43,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:30:43,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:30:43,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:30:43,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:30:43,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:30:43,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:30:43,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:30:43,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:30:43,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:30:43,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:30:43,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:30:43,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:30:43,926 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 [2020-08-19 00:30:43,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:30:43,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:30:43,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:30:43,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:30:43,951 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:30:43,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:30:43,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:30:43,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:30:43,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:30:43,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:30:43,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:30:43,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:30:43,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:30:43,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:30:43,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:30:43,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:30:43,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:30:43,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:30:43,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:30:43,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:30:43,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:30:43,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:30:43,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:30:43,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:30:43,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:30:43,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:30:43,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:30:43,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:30:43,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:30:43,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:30:44,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:30:44,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:30:44,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:30:44,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:30:44,278 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:30:44,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-08-19 00:30:44,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6fc94d3/377863406e3c47e89d9831033e1344c6/FLAGa87a36245 [2020-08-19 00:30:44,972 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:30:44,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-08-19 00:30:44,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6fc94d3/377863406e3c47e89d9831033e1344c6/FLAGa87a36245 [2020-08-19 00:30:45,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6fc94d3/377863406e3c47e89d9831033e1344c6 [2020-08-19 00:30:45,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:30:45,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:30:45,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:30:45,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:30:45,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:30:45,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:30:45" (1/1) ... [2020-08-19 00:30:45,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c05dbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:45, skipping insertion in model container [2020-08-19 00:30:45,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:30:45" (1/1) ... [2020-08-19 00:30:45,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:30:45,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:30:46,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:30:46,464 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:30:46,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:30:47,014 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:30:47,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47 WrapperNode [2020-08-19 00:30:47,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:30:47,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:30:47,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:30:47,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:30:47,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (1/1) ... [2020-08-19 00:30:47,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (1/1) ... [2020-08-19 00:30:47,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (1/1) ... [2020-08-19 00:30:47,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (1/1) ... [2020-08-19 00:30:47,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (1/1) ... [2020-08-19 00:30:47,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (1/1) ... [2020-08-19 00:30:47,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (1/1) ... [2020-08-19 00:30:47,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:30:47,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:30:47,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:30:47,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:30:47,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (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 [2020-08-19 00:30:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:30:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:30:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:30:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:30:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:30:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 00:30:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 00:30:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 00:30:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:30:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:30:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 00:30:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 00:30:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-19 00:30:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-19 00:30:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-19 00:30:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-19 00:30:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 00:30:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 00:30:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:30:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:30:49,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:30:49,975 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 00:30:49,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:30:49 BoogieIcfgContainer [2020-08-19 00:30:49,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:30:49,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:30:49,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:30:49,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:30:49,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:30:45" (1/3) ... [2020-08-19 00:30:49,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fd9993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:30:49, skipping insertion in model container [2020-08-19 00:30:49,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:47" (2/3) ... [2020-08-19 00:30:49,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fd9993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:30:49, skipping insertion in model container [2020-08-19 00:30:49,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:30:49" (3/3) ... [2020-08-19 00:30:50,001 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-08-19 00:30:50,011 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:30:50,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:30:50,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:30:50,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:30:50,073 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:30:50,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:30:50,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:30:50,074 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:30:50,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:30:50,074 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:30:50,074 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:30:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states. [2020-08-19 00:30:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-19 00:30:50,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:30:50,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:30:50,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:30:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:30:50,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2046950044, now seen corresponding path program 1 times [2020-08-19 00:30:50,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:30:50,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335184264] [2020-08-19 00:30:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:30:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:30:52,491 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-19 00:30:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:30:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:30:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:30:52,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335184264] [2020-08-19 00:30:52,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:30:52,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:30:52,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188326001] [2020-08-19 00:30:52,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:30:52,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:30:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:30:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:30:52,847 INFO L87 Difference]: Start difference. First operand 795 states. Second operand 5 states. [2020-08-19 00:31:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:01,071 INFO L93 Difference]: Finished difference Result 2333 states and 4147 transitions. [2020-08-19 00:31:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:31:01,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-08-19 00:31:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:01,105 INFO L225 Difference]: With dead ends: 2333 [2020-08-19 00:31:01,105 INFO L226 Difference]: Without dead ends: 1545 [2020-08-19 00:31:01,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:31:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-08-19 00:31:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1543. [2020-08-19 00:31:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-08-19 00:31:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2401 transitions. [2020-08-19 00:31:01,281 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2401 transitions. Word has length 324 [2020-08-19 00:31:01,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:01,282 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 2401 transitions. [2020-08-19 00:31:01,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:31:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2401 transitions. [2020-08-19 00:31:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-19 00:31:01,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:01,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:01,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:31:01,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:01,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:01,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1516440759, now seen corresponding path program 1 times [2020-08-19 00:31:01,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:01,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663941047] [2020-08-19 00:31:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:02,135 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-19 00:31:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:31:02,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663941047] [2020-08-19 00:31:02,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:02,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:31:02,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466741976] [2020-08-19 00:31:02,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:31:02,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:02,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:31:02,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:02,559 INFO L87 Difference]: Start difference. First operand 1543 states and 2401 transitions. Second operand 4 states. [2020-08-19 00:31:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:10,841 INFO L93 Difference]: Finished difference Result 4438 states and 6875 transitions. [2020-08-19 00:31:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:31:10,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-19 00:31:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:10,858 INFO L225 Difference]: With dead ends: 4438 [2020-08-19 00:31:10,858 INFO L226 Difference]: Without dead ends: 3024 [2020-08-19 00:31:10,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2020-08-19 00:31:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2020-08-19 00:31:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3022 states. [2020-08-19 00:31:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4679 transitions. [2020-08-19 00:31:10,988 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4679 transitions. Word has length 326 [2020-08-19 00:31:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:10,989 INFO L479 AbstractCegarLoop]: Abstraction has 3022 states and 4679 transitions. [2020-08-19 00:31:10,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4679 transitions. [2020-08-19 00:31:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-19 00:31:10,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:11,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:11,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:31:11,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash -545695684, now seen corresponding path program 1 times [2020-08-19 00:31:11,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:11,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670818328] [2020-08-19 00:31:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:11,603 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-19 00:31:11,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:31:11,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670818328] [2020-08-19 00:31:11,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:11,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:31:11,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591066274] [2020-08-19 00:31:11,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:31:11,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:11,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:31:11,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:11,758 INFO L87 Difference]: Start difference. First operand 3022 states and 4679 transitions. Second operand 4 states. [2020-08-19 00:31:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:19,800 INFO L93 Difference]: Finished difference Result 8991 states and 13913 transitions. [2020-08-19 00:31:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:31:19,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-19 00:31:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:19,829 INFO L225 Difference]: With dead ends: 8991 [2020-08-19 00:31:19,829 INFO L226 Difference]: Without dead ends: 6011 [2020-08-19 00:31:19,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2020-08-19 00:31:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3041. [2020-08-19 00:31:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3041 states. [2020-08-19 00:31:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4707 transitions. [2020-08-19 00:31:19,993 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4707 transitions. Word has length 326 [2020-08-19 00:31:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:19,994 INFO L479 AbstractCegarLoop]: Abstraction has 3041 states and 4707 transitions. [2020-08-19 00:31:19,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4707 transitions. [2020-08-19 00:31:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-19 00:31:20,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:20,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:20,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:31:20,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:20,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:20,004 INFO L82 PathProgramCache]: Analyzing trace with hash -441096328, now seen corresponding path program 1 times [2020-08-19 00:31:20,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:20,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352557964] [2020-08-19 00:31:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:20,609 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-19 00:31:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:31:20,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352557964] [2020-08-19 00:31:20,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:20,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:31:20,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741260879] [2020-08-19 00:31:20,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:31:20,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:20,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:31:20,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:20,717 INFO L87 Difference]: Start difference. First operand 3041 states and 4707 transitions. Second operand 4 states. [2020-08-19 00:31:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:29,005 INFO L93 Difference]: Finished difference Result 9010 states and 13934 transitions. [2020-08-19 00:31:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:31:29,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-08-19 00:31:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:29,033 INFO L225 Difference]: With dead ends: 9010 [2020-08-19 00:31:29,033 INFO L226 Difference]: Without dead ends: 6029 [2020-08-19 00:31:29,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2020-08-19 00:31:29,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 3059. [2020-08-19 00:31:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3059 states. [2020-08-19 00:31:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4728 transitions. [2020-08-19 00:31:29,200 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4728 transitions. Word has length 327 [2020-08-19 00:31:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:29,200 INFO L479 AbstractCegarLoop]: Abstraction has 3059 states and 4728 transitions. [2020-08-19 00:31:29,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4728 transitions. [2020-08-19 00:31:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-08-19 00:31:29,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:29,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:29,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:31:29,212 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:29,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:29,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1648776142, now seen corresponding path program 1 times [2020-08-19 00:31:29,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:29,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302650631] [2020-08-19 00:31:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:29,938 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-19 00:31:29,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:31:30,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302650631] [2020-08-19 00:31:30,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:30,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:31:30,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578314008] [2020-08-19 00:31:30,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:31:30,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:30,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:31:30,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:30,184 INFO L87 Difference]: Start difference. First operand 3059 states and 4728 transitions. Second operand 4 states. [2020-08-19 00:31:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:38,158 INFO L93 Difference]: Finished difference Result 8718 states and 13409 transitions. [2020-08-19 00:31:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:31:38,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-08-19 00:31:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:38,189 INFO L225 Difference]: With dead ends: 8718 [2020-08-19 00:31:38,189 INFO L226 Difference]: Without dead ends: 5904 [2020-08-19 00:31:38,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:38,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2020-08-19 00:31:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 5902. [2020-08-19 00:31:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5902 states. [2020-08-19 00:31:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 9056 transitions. [2020-08-19 00:31:38,449 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 9056 transitions. Word has length 328 [2020-08-19 00:31:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:38,451 INFO L479 AbstractCegarLoop]: Abstraction has 5902 states and 9056 transitions. [2020-08-19 00:31:38,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 9056 transitions. [2020-08-19 00:31:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-08-19 00:31:38,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:38,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:38,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:31:38,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:38,462 INFO L82 PathProgramCache]: Analyzing trace with hash 157244175, now seen corresponding path program 1 times [2020-08-19 00:31:38,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:38,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001854576] [2020-08-19 00:31:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:39,389 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-08-19 00:31:39,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:31:39,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001854576] [2020-08-19 00:31:39,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:39,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:31:39,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856530579] [2020-08-19 00:31:39,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:31:39,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:39,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:31:39,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:31:39,507 INFO L87 Difference]: Start difference. First operand 5902 states and 9056 transitions. Second operand 5 states. [2020-08-19 00:31:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:45,201 INFO L93 Difference]: Finished difference Result 13189 states and 20201 transitions. [2020-08-19 00:31:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:31:45,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-08-19 00:31:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:45,228 INFO L225 Difference]: With dead ends: 13189 [2020-08-19 00:31:45,228 INFO L226 Difference]: Without dead ends: 6775 [2020-08-19 00:31:45,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:31:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2020-08-19 00:31:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6773. [2020-08-19 00:31:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6773 states. [2020-08-19 00:31:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 10350 transitions. [2020-08-19 00:31:45,481 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 10350 transitions. Word has length 328 [2020-08-19 00:31:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:45,482 INFO L479 AbstractCegarLoop]: Abstraction has 6773 states and 10350 transitions. [2020-08-19 00:31:45,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:31:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 10350 transitions. [2020-08-19 00:31:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-19 00:31:45,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:45,493 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] [2020-08-19 00:31:45,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:31:45,494 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:45,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1619567406, now seen corresponding path program 1 times [2020-08-19 00:31:45,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:45,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931582281] [2020-08-19 00:31:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat