/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:12:44,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:12:44,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:12:44,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:12:44,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:12:44,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:12:44,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:12:44,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:12:44,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:12:44,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:12:44,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:12:44,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:12:44,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:12:44,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:12:44,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:12:44,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:12:44,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:12:44,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:12:44,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:12:44,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:12:44,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:12:44,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:12:44,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:12:44,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:12:44,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:12:44,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:12:44,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:12:44,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:12:44,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:12:44,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 03:12:44,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:12:44,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:12:44,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:12:44,575 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 [2020-08-22 03:12:44,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:12:44,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:12:44,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:12:44,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:12:44,614 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:12:44,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:12:44,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:12:44,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:12:44,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:12:44,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:12:44,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:12:44,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:12:44,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:12:44,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:12:44,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:12:44,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:12:44,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:12:44,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:12:44,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:12:44,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:12:44,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:12:44,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:12:44,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:12:44,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:12:44,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:12:44,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:12:44,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:12:44,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:12:44,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:12:44,620 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 03:12:44,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:12:44,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:12:44,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:12:44,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:12:44,948 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:12:44,949 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 03:12:45,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fa5b509f/3b3dab1e488744a8a45f2c1f7d2570ea/FLAG9c3bf86e0 [2020-08-22 03:12:45,617 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:12:45,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 03:12:45,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fa5b509f/3b3dab1e488744a8a45f2c1f7d2570ea/FLAG9c3bf86e0 [2020-08-22 03:12:45,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fa5b509f/3b3dab1e488744a8a45f2c1f7d2570ea [2020-08-22 03:12:45,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:12:45,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:12:45,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:12:45,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:12:45,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:12:45,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:12:45" (1/1) ... [2020-08-22 03:12:45,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4625cee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:45, skipping insertion in model container [2020-08-22 03:12:45,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:12:45" (1/1) ... [2020-08-22 03:12:45,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:12:45,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:12:46,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:12:46,570 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:12:47,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:12:47,119 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:12:47,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47 WrapperNode [2020-08-22 03:12:47,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:12:47,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:12:47,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:12:47,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:12:47,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (1/1) ... [2020-08-22 03:12:47,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (1/1) ... [2020-08-22 03:12:47,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (1/1) ... [2020-08-22 03:12:47,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (1/1) ... [2020-08-22 03:12:47,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (1/1) ... [2020-08-22 03:12:47,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (1/1) ... [2020-08-22 03:12:47,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (1/1) ... [2020-08-22 03:12:47,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:12:47,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:12:47,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:12:47,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:12:47,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (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 [2020-08-22 03:12:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:12:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:12:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:12:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:12:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:12:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 03:12:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 03:12:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 03:12:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:12:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:12:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 03:12:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 03:12:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 03:12:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 03:12:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 03:12:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 03:12:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 03:12:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:12:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:12:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:12:49,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:12:49,090 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 03:12:49,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:12:49 BoogieIcfgContainer [2020-08-22 03:12:49,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:12:49,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:12:49,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:12:49,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:12:49,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:12:45" (1/3) ... [2020-08-22 03:12:49,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669f8bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:12:49, skipping insertion in model container [2020-08-22 03:12:49,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:12:47" (2/3) ... [2020-08-22 03:12:49,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669f8bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:12:49, skipping insertion in model container [2020-08-22 03:12:49,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:12:49" (3/3) ... [2020-08-22 03:12:49,108 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 03:12:49,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:12:49,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-22 03:12:49,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-22 03:12:49,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:12:49,181 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:12:49,182 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:12:49,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:12:49,182 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:12:49,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:12:49,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:12:49,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:12:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-22 03:12:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 03:12:49,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:49,265 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] [2020-08-22 03:12:49,266 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:49,273 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-22 03:12:49,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:49,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563750631] [2020-08-22 03:12:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:50,388 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:12:50,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:12:50,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563750631] [2020-08-22 03:12:50,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:50,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:12:50,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100208149] [2020-08-22 03:12:50,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:12:50,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:50,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:12:50,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:12:50,547 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-22 03:12:50,877 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 03:12:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:53,686 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-22 03:12:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:12:53,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 03:12:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:53,710 INFO L225 Difference]: With dead ends: 754 [2020-08-22 03:12:53,711 INFO L226 Difference]: Without dead ends: 593 [2020-08-22 03:12:53,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:12:53,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-22 03:12:53,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-22 03:12:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-22 03:12:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-22 03:12:53,813 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-22 03:12:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:53,814 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-22 03:12:53,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:12:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-22 03:12:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 03:12:53,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:53,819 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] [2020-08-22 03:12:53,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:12:53,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-22 03:12:53,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:53,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359731016] [2020-08-22 03:12:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:54,231 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:12:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:12:54,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359731016] [2020-08-22 03:12:54,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:54,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:12:54,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390668772] [2020-08-22 03:12:54,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:12:54,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:54,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:12:54,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:12:54,289 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-22 03:12:54,598 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 03:12:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:12:56,720 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-22 03:12:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:12:56,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 03:12:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:12:56,728 INFO L225 Difference]: With dead ends: 1190 [2020-08-22 03:12:56,729 INFO L226 Difference]: Without dead ends: 961 [2020-08-22 03:12:56,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:12:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-22 03:12:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-22 03:12:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-22 03:12:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-22 03:12:56,793 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-22 03:12:56,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:12:56,794 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-22 03:12:56,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:12:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-22 03:12:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 03:12:56,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:12:56,804 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] [2020-08-22 03:12:56,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:12:56,806 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:12:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:12:56,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-22 03:12:56,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:12:56,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006432385] [2020-08-22 03:12:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:12:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:57,365 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:12:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:12:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:12:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:12:57,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006432385] [2020-08-22 03:12:57,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:12:57,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:12:57,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372528648] [2020-08-22 03:12:57,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:12:57,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:12:57,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:12:57,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:12:57,470 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-22 03:12:57,835 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 03:13:00,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:00,088 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-22 03:13:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:13:00,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 03:13:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:00,101 INFO L225 Difference]: With dead ends: 2090 [2020-08-22 03:13:00,102 INFO L226 Difference]: Without dead ends: 1701 [2020-08-22 03:13:00,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:13:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-22 03:13:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-22 03:13:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-22 03:13:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-22 03:13:00,200 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-22 03:13:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:00,200 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-22 03:13:00,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:13:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-22 03:13:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 03:13:00,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:00,210 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] [2020-08-22 03:13:00,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:13:00,211 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:00,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-22 03:13:00,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:00,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046575297] [2020-08-22 03:13:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:00,888 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:00,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:00,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046575297] [2020-08-22 03:13:00,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:00,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:13:00,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006804806] [2020-08-22 03:13:00,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:13:00,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:13:00,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:13:00,942 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-22 03:13:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:04,298 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-22 03:13:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:13:04,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 03:13:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:04,316 INFO L225 Difference]: With dead ends: 4967 [2020-08-22 03:13:04,316 INFO L226 Difference]: Without dead ends: 3281 [2020-08-22 03:13:04,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:13:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-22 03:13:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-22 03:13:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-22 03:13:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-22 03:13:04,526 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-22 03:13:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:04,527 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-22 03:13:04,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:13:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-22 03:13:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 03:13:04,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:04,533 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] [2020-08-22 03:13:04,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:13:04,536 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:04,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-22 03:13:04,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:04,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087464460] [2020-08-22 03:13:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:04,847 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:04,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087464460] [2020-08-22 03:13:04,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:04,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:13:04,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777645973] [2020-08-22 03:13:04,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:13:04,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:04,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:13:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:04,888 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-22 03:13:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:07,191 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-22 03:13:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:13:07,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-22 03:13:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:07,231 INFO L225 Difference]: With dead ends: 9659 [2020-08-22 03:13:07,231 INFO L226 Difference]: Without dead ends: 6456 [2020-08-22 03:13:07,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-22 03:13:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-22 03:13:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-22 03:13:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-22 03:13:07,453 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-22 03:13:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:07,453 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-22 03:13:07,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:13:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-22 03:13:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 03:13:07,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:07,459 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] [2020-08-22 03:13:07,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:13:07,460 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:07,463 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-22 03:13:07,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:07,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59791485] [2020-08-22 03:13:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:07,990 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:08,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59791485] [2020-08-22 03:13:08,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:08,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:13:08,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009522801] [2020-08-22 03:13:08,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:13:08,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:08,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:13:08,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:13:08,089 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-22 03:13:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:11,371 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-22 03:13:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:13:11,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-22 03:13:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:11,398 INFO L225 Difference]: With dead ends: 9441 [2020-08-22 03:13:11,398 INFO L226 Difference]: Without dead ends: 6238 [2020-08-22 03:13:11,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:13:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-22 03:13:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-22 03:13:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-22 03:13:11,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-22 03:13:11,675 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-22 03:13:11,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:11,676 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-22 03:13:11,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:13:11,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-22 03:13:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 03:13:11,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:11,688 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] [2020-08-22 03:13:11,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:13:11,689 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:11,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:11,689 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-22 03:13:11,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:11,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339968391] [2020-08-22 03:13:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:12,014 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:12,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339968391] [2020-08-22 03:13:12,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:12,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:13:12,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776700951] [2020-08-22 03:13:12,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:13:12,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:12,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:13:12,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:12,068 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-22 03:13:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:15,750 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-22 03:13:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:13:15,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-22 03:13:15,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:15,795 INFO L225 Difference]: With dead ends: 18492 [2020-08-22 03:13:15,795 INFO L226 Difference]: Without dead ends: 12348 [2020-08-22 03:13:15,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-22 03:13:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-22 03:13:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-22 03:13:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-22 03:13:16,126 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-22 03:13:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:16,127 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-22 03:13:16,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:13:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-22 03:13:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 03:13:16,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:16,137 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] [2020-08-22 03:13:16,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:13:16,137 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:16,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-22 03:13:16,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:16,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725817564] [2020-08-22 03:13:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:16,443 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:16,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725817564] [2020-08-22 03:13:16,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:16,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:13:16,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324264936] [2020-08-22 03:13:16,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:13:16,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:16,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:13:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:16,509 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-22 03:13:19,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:19,902 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-22 03:13:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:13:19,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-22 03:13:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:19,926 INFO L225 Difference]: With dead ends: 16495 [2020-08-22 03:13:19,927 INFO L226 Difference]: Without dead ends: 10615 [2020-08-22 03:13:19,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-22 03:13:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-22 03:13:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 03:13:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-22 03:13:20,487 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-22 03:13:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:20,487 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-22 03:13:20,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:13:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-22 03:13:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 03:13:20,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:20,503 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] [2020-08-22 03:13:20,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:13:20,504 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:20,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:20,504 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-22 03:13:20,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:20,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893119888] [2020-08-22 03:13:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:20,851 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:20,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893119888] [2020-08-22 03:13:20,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:20,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:13:20,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614865445] [2020-08-22 03:13:20,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:13:20,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:13:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:13:20,893 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-22 03:13:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:23,324 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-22 03:13:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:13:23,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 03:13:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:23,347 INFO L225 Difference]: With dead ends: 21564 [2020-08-22 03:13:23,347 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 03:13:23,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:13:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 03:13:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-22 03:13:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-22 03:13:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-22 03:13:23,816 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-22 03:13:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:23,816 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-22 03:13:23,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:13:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-22 03:13:23,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 03:13:23,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:23,831 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] [2020-08-22 03:13:23,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:13:23,831 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-22 03:13:23,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:23,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151047934] [2020-08-22 03:13:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:24,183 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:24,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:24,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151047934] [2020-08-22 03:13:24,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:24,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:13:24,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082585000] [2020-08-22 03:13:24,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:13:24,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:24,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:13:24,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:13:24,442 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-22 03:13:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:27,594 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-22 03:13:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:13:27,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 03:13:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:28,120 INFO L225 Difference]: With dead ends: 15230 [2020-08-22 03:13:28,120 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 03:13:28,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:13:28,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 03:13:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-22 03:13:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 03:13:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-22 03:13:28,573 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-22 03:13:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:28,573 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-22 03:13:28,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:13:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-22 03:13:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 03:13:28,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:28,586 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] [2020-08-22 03:13:28,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:13:28,586 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:28,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-22 03:13:28,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:28,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895427767] [2020-08-22 03:13:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:28,864 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:28,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:28,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895427767] [2020-08-22 03:13:28,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:28,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:13:28,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787361036] [2020-08-22 03:13:28,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:13:28,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:28,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:13:28,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:28,899 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-22 03:13:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:32,597 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-22 03:13:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:13:32,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-22 03:13:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:32,627 INFO L225 Difference]: With dead ends: 25409 [2020-08-22 03:13:32,627 INFO L226 Difference]: Without dead ends: 21030 [2020-08-22 03:13:32,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:13:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-22 03:13:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-22 03:13:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-22 03:13:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-22 03:13:33,301 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-22 03:13:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:33,301 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-22 03:13:33,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:13:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-22 03:13:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 03:13:33,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:33,312 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] [2020-08-22 03:13:33,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:13:33,313 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-22 03:13:33,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:33,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007880224] [2020-08-22 03:13:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:33,650 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:33,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:33,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007880224] [2020-08-22 03:13:33,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:33,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:13:33,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901482570] [2020-08-22 03:13:33,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:13:33,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:13:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:13:33,701 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-22 03:13:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:36,858 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-22 03:13:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:13:36,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 03:13:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:36,883 INFO L225 Difference]: With dead ends: 30843 [2020-08-22 03:13:36,884 INFO L226 Difference]: Without dead ends: 20313 [2020-08-22 03:13:36,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:13:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-22 03:13:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-22 03:13:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-22 03:13:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-22 03:13:37,838 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-22 03:13:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:13:37,838 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-22 03:13:37,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:13:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-22 03:13:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 03:13:37,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:13:37,853 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] [2020-08-22 03:13:37,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 03:13:37,854 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:13:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:13:37,854 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-22 03:13:37,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:13:37,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81832476] [2020-08-22 03:13:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:13:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:38,294 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 03:13:38,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:13:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:13:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:13:38,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81832476] [2020-08-22 03:13:38,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:13:38,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:13:38,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205353028] [2020-08-22 03:13:38,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:13:38,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:13:38,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:13:38,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:13:38,381 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states. [2020-08-22 03:13:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:13:42,657 INFO L93 Difference]: Finished difference Result 54646 states and 77842 transitions. [2020-08-22 03:13:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:13:42,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 03:13:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:13:42,690 INFO L225 Difference]: With dead ends: 54646 [2020-08-22 03:13:42,690 INFO L226 Difference]: Without dead ends: 34484 [2020-08-22 03:13:42,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:13:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states.