/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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:30:40,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:30:40,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:30:40,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:30:40,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:30:40,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:30:40,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:30:40,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:30:40,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:30:40,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:30:40,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:30:40,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:30:40,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:30:40,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:30:40,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:30:40,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:30:40,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:30:40,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:30:40,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:30:40,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:30:40,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:30:40,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:30:40,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:30:40,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:30:40,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:30:40,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:30:40,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:30:40,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:30:40,946 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 00:30:40,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:30:40,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:30:41,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:30:41,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:30:41,001 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:30:41,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:30:41,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:30:41,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:30:41,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:30:41,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:30:41,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:30:41,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:30:41,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:30:41,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:30:41,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:30:41,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:30:41,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:30:41,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:30:41,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:30:41,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:30:41,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:30:41,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:30:41,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:30:41,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:30:41,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:30:41,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:30:41,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:30:41,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:30:41,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:30:41,012 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 00:30:41,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:30:41,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:30:41,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:30:41,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:30:41,390 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:30:41,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-19 00:30:41,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ccbd541/e5faa807331048fd857831c48ff27432/FLAGb092988e4 [2020-08-19 00:30:42,137 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:30:42,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-19 00:30:42,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ccbd541/e5faa807331048fd857831c48ff27432/FLAGb092988e4 [2020-08-19 00:30:42,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ccbd541/e5faa807331048fd857831c48ff27432 [2020-08-19 00:30:42,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:30:42,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:30:42,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:30:42,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:30:42,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:30:42,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:30:42" (1/1) ... [2020-08-19 00:30:42,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:42, skipping insertion in model container [2020-08-19 00:30:42,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:30:42" (1/1) ... [2020-08-19 00:30:42,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:30:42,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:30:43,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:30:43,529 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:30:44,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:30:44,067 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:30:44,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44 WrapperNode [2020-08-19 00:30:44,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:30:44,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:30:44,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:30:44,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:30:44,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (1/1) ... [2020-08-19 00:30:44,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (1/1) ... [2020-08-19 00:30:44,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (1/1) ... [2020-08-19 00:30:44,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (1/1) ... [2020-08-19 00:30:44,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (1/1) ... [2020-08-19 00:30:44,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (1/1) ... [2020-08-19 00:30:44,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (1/1) ... [2020-08-19 00:30:44,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:30:44,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:30:44,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:30:44,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:30:44,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (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 00:30:44,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:30:44,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:30:44,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:30:44,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:30:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:30:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 00:30:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-19 00:30:44,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 00:30:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 00:30:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:30:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:30:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 00:30:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 00:30:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-19 00:30:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-19 00:30:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-19 00:30:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-19 00:30:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 00:30:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 00:30:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:30:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:30:44,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:30:47,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:30:47,180 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 00:30:47,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:30:47 BoogieIcfgContainer [2020-08-19 00:30:47,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:30:47,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:30:47,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:30:47,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:30:47,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:30:42" (1/3) ... [2020-08-19 00:30:47,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130df5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:30:47, skipping insertion in model container [2020-08-19 00:30:47,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:30:44" (2/3) ... [2020-08-19 00:30:47,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130df5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:30:47, skipping insertion in model container [2020-08-19 00:30:47,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:30:47" (3/3) ... [2020-08-19 00:30:47,208 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-08-19 00:30:47,219 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:30:47,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:30:47,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:30:47,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:30:47,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:30:47,277 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:30:47,277 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:30:47,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:30:47,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:30:47,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:30:47,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:30:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2020-08-19 00:30:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-19 00:30:47,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:30:47,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:30:47,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:30:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:30:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash 578636414, now seen corresponding path program 1 times [2020-08-19 00:30:47,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:30:47,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861538996] [2020-08-19 00:30:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:30:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:30:49,078 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-19 00:30:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:30:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:30:49,338 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 00:30:49,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861538996] [2020-08-19 00:30:49,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:30:49,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:30:49,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96659810] [2020-08-19 00:30:49,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:30:49,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:30:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:30:49,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:30:49,370 INFO L87 Difference]: Start difference. First operand 796 states. Second operand 4 states. [2020-08-19 00:30:49,940 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-19 00:30:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:30:55,206 INFO L93 Difference]: Finished difference Result 1515 states and 2659 transitions. [2020-08-19 00:30:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:30:55,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-19 00:30:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:30:55,236 INFO L225 Difference]: With dead ends: 1515 [2020-08-19 00:30:55,237 INFO L226 Difference]: Without dead ends: 1299 [2020-08-19 00:30:55,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:30:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-08-19 00:30:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1297. [2020-08-19 00:30:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2020-08-19 00:30:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2028 transitions. [2020-08-19 00:30:55,382 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2028 transitions. Word has length 318 [2020-08-19 00:30:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:30:55,388 INFO L479 AbstractCegarLoop]: Abstraction has 1297 states and 2028 transitions. [2020-08-19 00:30:55,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:30:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2028 transitions. [2020-08-19 00:30:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-19 00:30:55,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:30:55,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:30:55,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:30:55,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:30:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:30:55,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1367796252, now seen corresponding path program 1 times [2020-08-19 00:30:55,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:30:55,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997546384] [2020-08-19 00:30:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:30:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:30:56,505 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-19 00:30:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:30:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:30:56,660 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 00:30:56,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997546384] [2020-08-19 00:30:56,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:30:56,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:30:56,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648464912] [2020-08-19 00:30:56,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:30:56,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:30:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:30:56,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:30:56,665 INFO L87 Difference]: Start difference. First operand 1297 states and 2028 transitions. Second operand 4 states. [2020-08-19 00:30:57,240 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-19 00:31:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:01,793 INFO L93 Difference]: Finished difference Result 2671 states and 4201 transitions. [2020-08-19 00:31:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:31:01,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-19 00:31:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:01,811 INFO L225 Difference]: With dead ends: 2671 [2020-08-19 00:31:01,812 INFO L226 Difference]: Without dead ends: 2289 [2020-08-19 00:31:01,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:31:01,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-08-19 00:31:01,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2020-08-19 00:31:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-08-19 00:31:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3564 transitions. [2020-08-19 00:31:01,920 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3564 transitions. Word has length 318 [2020-08-19 00:31:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:01,921 INFO L479 AbstractCegarLoop]: Abstraction has 2287 states and 3564 transitions. [2020-08-19 00:31:01,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3564 transitions. [2020-08-19 00:31:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-19 00:31:01,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:01,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:01,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:31:01,932 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:01,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1797025293, now seen corresponding path program 1 times [2020-08-19 00:31:01,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:01,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213183108] [2020-08-19 00:31:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:03,019 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-19 00:31:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:03,233 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 00:31:03,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213183108] [2020-08-19 00:31:03,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:03,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:31:03,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002616849] [2020-08-19 00:31:03,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:31:03,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:03,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:31:03,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:03,238 INFO L87 Difference]: Start difference. First operand 2287 states and 3564 transitions. Second operand 4 states. [2020-08-19 00:31:03,840 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-19 00:31:09,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:09,187 INFO L93 Difference]: Finished difference Result 4943 states and 7762 transitions. [2020-08-19 00:31:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:31:09,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-19 00:31:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:09,208 INFO L225 Difference]: With dead ends: 4943 [2020-08-19 00:31:09,208 INFO L226 Difference]: Without dead ends: 4229 [2020-08-19 00:31:09,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:31:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2020-08-19 00:31:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 4227. [2020-08-19 00:31:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-08-19 00:31:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 6568 transitions. [2020-08-19 00:31:09,339 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 6568 transitions. Word has length 318 [2020-08-19 00:31:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:09,340 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 6568 transitions. [2020-08-19 00:31:09,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 6568 transitions. [2020-08-19 00:31:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-19 00:31:09,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:09,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:09,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:31:09,350 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:09,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1914723175, now seen corresponding path program 1 times [2020-08-19 00:31:09,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:09,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515634963] [2020-08-19 00:31:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:10,522 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-19 00:31:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:10,762 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 00:31:10,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515634963] [2020-08-19 00:31:10,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:10,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:31:10,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089401188] [2020-08-19 00:31:10,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:31:10,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:10,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:31:10,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:10,767 INFO L87 Difference]: Start difference. First operand 4227 states and 6568 transitions. Second operand 4 states. [2020-08-19 00:31:11,373 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-08-19 00:31:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:15,644 INFO L93 Difference]: Finished difference Result 9359 states and 14670 transitions. [2020-08-19 00:31:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:31:15,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-08-19 00:31:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:15,683 INFO L225 Difference]: With dead ends: 9359 [2020-08-19 00:31:15,684 INFO L226 Difference]: Without dead ends: 8029 [2020-08-19 00:31:15,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:31:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2020-08-19 00:31:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 8027. [2020-08-19 00:31:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8027 states. [2020-08-19 00:31:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 12440 transitions. [2020-08-19 00:31:16,020 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 12440 transitions. Word has length 318 [2020-08-19 00:31:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:16,022 INFO L479 AbstractCegarLoop]: Abstraction has 8027 states and 12440 transitions. [2020-08-19 00:31:16,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 12440 transitions. [2020-08-19 00:31:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-19 00:31:16,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:16,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:16,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:31:16,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:16,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:16,041 INFO L82 PathProgramCache]: Analyzing trace with hash 769893352, now seen corresponding path program 1 times [2020-08-19 00:31:16,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:16,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923881293] [2020-08-19 00:31:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:17,102 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-19 00:31:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:17,259 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 00:31:17,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923881293] [2020-08-19 00:31:17,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:17,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:31:17,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869303137] [2020-08-19 00:31:17,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:31:17,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:17,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:31:17,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:31:17,262 INFO L87 Difference]: Start difference. First operand 8027 states and 12440 transitions. Second operand 5 states. [2020-08-19 00:31:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:24,554 INFO L93 Difference]: Finished difference Result 23754 states and 36777 transitions. [2020-08-19 00:31:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:31:24,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-08-19 00:31:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:24,630 INFO L225 Difference]: With dead ends: 23754 [2020-08-19 00:31:24,630 INFO L226 Difference]: Without dead ends: 15742 [2020-08-19 00:31:24,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:31:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15742 states. [2020-08-19 00:31:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15742 to 15740. [2020-08-19 00:31:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15740 states. [2020-08-19 00:31:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15740 states to 15740 states and 24254 transitions. [2020-08-19 00:31:25,143 INFO L78 Accepts]: Start accepts. Automaton has 15740 states and 24254 transitions. Word has length 318 [2020-08-19 00:31:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:25,144 INFO L479 AbstractCegarLoop]: Abstraction has 15740 states and 24254 transitions. [2020-08-19 00:31:25,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:31:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 15740 states and 24254 transitions. [2020-08-19 00:31:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-19 00:31:25,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:25,172 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] [2020-08-19 00:31:25,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:31:25,176 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:25,177 INFO L82 PathProgramCache]: Analyzing trace with hash -685152901, now seen corresponding path program 1 times [2020-08-19 00:31:25,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:25,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131667263] [2020-08-19 00:31:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:26,103 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-08-19 00:31:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:31:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:31:26,242 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 00:31:26,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131667263] [2020-08-19 00:31:26,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:31:26,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:31:26,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401180610] [2020-08-19 00:31:26,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:31:26,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:31:26,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:31:26,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:31:26,253 INFO L87 Difference]: Start difference. First operand 15740 states and 24254 transitions. Second operand 4 states. [2020-08-19 00:31:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:31:34,575 INFO L93 Difference]: Finished difference Result 46481 states and 71518 transitions. [2020-08-19 00:31:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:31:34,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-08-19 00:31:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:31:34,652 INFO L225 Difference]: With dead ends: 46481 [2020-08-19 00:31:34,653 INFO L226 Difference]: Without dead ends: 30870 [2020-08-19 00:31:34,688 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 00:31:34,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30870 states. [2020-08-19 00:31:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30870 to 30868. [2020-08-19 00:31:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30868 states. [2020-08-19 00:31:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30868 states to 30868 states and 47285 transitions. [2020-08-19 00:31:36,560 INFO L78 Accepts]: Start accepts. Automaton has 30868 states and 47285 transitions. Word has length 320 [2020-08-19 00:31:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:31:36,560 INFO L479 AbstractCegarLoop]: Abstraction has 30868 states and 47285 transitions. [2020-08-19 00:31:36,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:31:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 30868 states and 47285 transitions. [2020-08-19 00:31:36,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-19 00:31:36,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:31:36,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:31:36,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:31:36,615 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:31:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:31:36,615 INFO L82 PathProgramCache]: Analyzing trace with hash -810813248, now seen corresponding path program 1 times [2020-08-19 00:31:36,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:31:36,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423929793] [2020-08-19 00:31:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:31:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat