/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=WIDEST --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.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:21:08,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:21:08,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:21:08,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:21:08,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:21:08,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:21:08,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:21:08,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:21:08,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:21:08,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:21:08,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:21:08,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:21:08,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:21:08,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:21:08,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:21:08,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:21:08,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:21:08,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:21:08,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:21:08,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:21:08,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:21:08,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:21:08,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:21:08,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:21:08,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:21:08,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:21:08,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:21:08,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:21:08,761 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 [2020-08-21 22:21:08,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:21:08,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:21:08,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:21:08,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:21:08,818 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:21:08,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:21:08,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:21:08,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:21:08,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:21:08,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:21:08,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:21:08,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:21:08,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:21:08,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:21:08,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:21:08,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:21:08,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:21:08,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:21:08,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:21:08,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:21:08,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:21:08,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:21:08,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:21:08,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:21:08,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:21:08,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:21:08,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:21:08,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:21:08,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:21:08,826 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:21:09,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:21:09,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:21:09,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:21:09,170 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:21:09,170 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:21:09,176 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 22:21:09,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec1813e3/ffb74ce0189442a69eefa628c8333d0c/FLAG3825fe10e [2020-08-21 22:21:09,866 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:21:09,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 22:21:09,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec1813e3/ffb74ce0189442a69eefa628c8333d0c/FLAG3825fe10e [2020-08-21 22:21:10,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec1813e3/ffb74ce0189442a69eefa628c8333d0c [2020-08-21 22:21:10,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:21:10,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:21:10,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:21:10,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:21:10,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:21:10,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:21:10" (1/1) ... [2020-08-21 22:21:10,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a52991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:10, skipping insertion in model container [2020-08-21 22:21:10,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:21:10" (1/1) ... [2020-08-21 22:21:10,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:21:10,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:21:11,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:21:11,820 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:21:12,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:21:12,855 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:21:12,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12 WrapperNode [2020-08-21 22:21:12,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:21:12,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:21:12,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:21:12,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:21:12,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (1/1) ... [2020-08-21 22:21:12,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (1/1) ... [2020-08-21 22:21:12,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (1/1) ... [2020-08-21 22:21:12,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (1/1) ... [2020-08-21 22:21:13,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (1/1) ... [2020-08-21 22:21:13,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (1/1) ... [2020-08-21 22:21:13,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (1/1) ... [2020-08-21 22:21:13,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:21:13,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:21:13,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:21:13,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:21:13,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (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 [2020-08-21 22:21:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:21:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:21:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 22:21:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:21:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:21:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 22:21:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-21 22:21:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 22:21:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 22:21:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:21:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 22:21:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 22:21:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 22:21:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-21 22:21:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-21 22:21:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-21 22:21:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-21 22:21:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 22:21:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 22:21:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:21:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:21:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:21:16,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:21:16,383 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 22:21:16,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:21:16 BoogieIcfgContainer [2020-08-21 22:21:16,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:21:16,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:21:16,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:21:16,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:21:16,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:21:10" (1/3) ... [2020-08-21 22:21:16,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f46df31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:21:16, skipping insertion in model container [2020-08-21 22:21:16,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:21:12" (2/3) ... [2020-08-21 22:21:16,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f46df31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:21:16, skipping insertion in model container [2020-08-21 22:21:16,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:21:16" (3/3) ... [2020-08-21 22:21:16,402 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 22:21:16,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:21:16,424 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-08-21 22:21:16,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-08-21 22:21:16,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:21:16,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:21:16,469 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:21:16,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:21:16,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:21:16,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:21:16,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:21:16,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:21:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-08-21 22:21:16,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-21 22:21:16,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:21:16,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:21:16,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:21:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:21:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-08-21 22:21:16,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:21:16,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534101590] [2020-08-21 22:21:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:21:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:18,647 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 22:21:18,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:21:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:21:18,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534101590] [2020-08-21 22:21:18,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:21:18,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:21:18,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612168798] [2020-08-21 22:21:18,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:21:18,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:21:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:21:18,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:21:18,859 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-08-21 22:21:19,475 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-08-21 22:21:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:21:26,978 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-08-21 22:21:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:21:26,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-08-21 22:21:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:21:27,008 INFO L225 Difference]: With dead ends: 1776 [2020-08-21 22:21:27,009 INFO L226 Difference]: Without dead ends: 1481 [2020-08-21 22:21:27,015 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 [2020-08-21 22:21:27,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-08-21 22:21:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-08-21 22:21:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-08-21 22:21:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-08-21 22:21:27,169 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-08-21 22:21:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:21:27,175 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-08-21 22:21:27,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:21:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-08-21 22:21:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-21 22:21:27,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:21:27,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:21:27,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:21:27,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:21:27,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:21:27,190 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-08-21 22:21:27,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:21:27,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341946997] [2020-08-21 22:21:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:21:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:28,624 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 22:21:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:21:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:21:28,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341946997] [2020-08-21 22:21:28,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:21:28,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:21:28,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721171780] [2020-08-21 22:21:28,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:21:28,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:21:28,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:21:28,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:21:28,959 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2020-08-21 22:21:29,582 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-08-21 22:21:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:21:35,835 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-08-21 22:21:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:21:35,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-08-21 22:21:35,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:21:35,854 INFO L225 Difference]: With dead ends: 2852 [2020-08-21 22:21:35,855 INFO L226 Difference]: Without dead ends: 2439 [2020-08-21 22:21:35,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:21:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-08-21 22:21:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-08-21 22:21:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-08-21 22:21:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-08-21 22:21:35,946 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-08-21 22:21:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:21:35,948 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-08-21 22:21:35,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:21:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-08-21 22:21:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-21 22:21:35,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:21:35,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:21:35,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:21:35,963 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:21:35,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:21:35,964 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-08-21 22:21:35,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:21:35,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073520220] [2020-08-21 22:21:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:21:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:37,156 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 22:21:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:21:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:21:37,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073520220] [2020-08-21 22:21:37,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:21:37,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:21:37,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992940799] [2020-08-21 22:21:37,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:21:37,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:21:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:21:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:21:37,475 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2020-08-21 22:21:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:21:46,533 INFO L93 Difference]: Finished difference Result 7199 states and 11086 transitions. [2020-08-21 22:21:46,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:21:46,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-08-21 22:21:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:21:46,562 INFO L225 Difference]: With dead ends: 7199 [2020-08-21 22:21:46,563 INFO L226 Difference]: Without dead ends: 4777 [2020-08-21 22:21:46,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:21:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-08-21 22:21:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2020-08-21 22:21:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2020-08-21 22:21:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7163 transitions. [2020-08-21 22:21:46,750 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7163 transitions. Word has length 324 [2020-08-21 22:21:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:21:46,751 INFO L479 AbstractCegarLoop]: Abstraction has 4653 states and 7163 transitions. [2020-08-21 22:21:46,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:21:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7163 transitions. [2020-08-21 22:21:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-21 22:21:46,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:21:46,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:21:46,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:21:46,769 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:21:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:21:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash 76253758, now seen corresponding path program 1 times [2020-08-21 22:21:46,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:21:46,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749418002] [2020-08-21 22:21:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:21:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:47,596 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 22:21:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:21:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:21:47,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749418002] [2020-08-21 22:21:47,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:21:47,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:21:47,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028105006] [2020-08-21 22:21:47,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:21:47,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:21:47,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:21:47,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:21:47,815 INFO L87 Difference]: Start difference. First operand 4653 states and 7163 transitions. Second operand 4 states. [2020-08-21 22:21:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:21:58,791 INFO L93 Difference]: Finished difference Result 13649 states and 20959 transitions. [2020-08-21 22:21:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:21:58,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-21 22:21:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:21:58,835 INFO L225 Difference]: With dead ends: 13649 [2020-08-21 22:21:58,836 INFO L226 Difference]: Without dead ends: 9125 [2020-08-21 22:21:58,844 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 [2020-08-21 22:21:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2020-08-21 22:21:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9001. [2020-08-21 22:21:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-08-21 22:21:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 13804 transitions. [2020-08-21 22:21:59,128 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 13804 transitions. Word has length 326 [2020-08-21 22:21:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:21:59,129 INFO L479 AbstractCegarLoop]: Abstraction has 9001 states and 13804 transitions. [2020-08-21 22:21:59,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:21:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 13804 transitions. [2020-08-21 22:21:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-21 22:21:59,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:21:59,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:21:59,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:21:59,148 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:21:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:21:59,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1985882685, now seen corresponding path program 1 times [2020-08-21 22:21:59,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:21:59,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187436721] [2020-08-21 22:21:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:21:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:59,831 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 22:21:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:21:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:21:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:21:59,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187436721] [2020-08-21 22:21:59,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:21:59,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:21:59,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995024975] [2020-08-21 22:21:59,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:21:59,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:21:59,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:21:59,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:21:59,927 INFO L87 Difference]: Start difference. First operand 9001 states and 13804 transitions. Second operand 4 states. [2020-08-21 22:22:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:22:10,641 INFO L93 Difference]: Finished difference Result 26928 states and 41288 transitions. [2020-08-21 22:22:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:22:10,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-21 22:22:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:22:10,699 INFO L225 Difference]: With dead ends: 26928 [2020-08-21 22:22:10,699 INFO L226 Difference]: Without dead ends: 17969 [2020-08-21 22:22:10,716 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 [2020-08-21 22:22:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17969 states. [2020-08-21 22:22:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17969 to 9020. [2020-08-21 22:22:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9020 states. [2020-08-21 22:22:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 13832 transitions. [2020-08-21 22:22:11,164 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 13832 transitions. Word has length 326 [2020-08-21 22:22:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:22:11,165 INFO L479 AbstractCegarLoop]: Abstraction has 9020 states and 13832 transitions. [2020-08-21 22:22:11,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:22:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 13832 transitions. [2020-08-21 22:22:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-21 22:22:11,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:22:11,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:22:11,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:22:11,184 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:22:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:22:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1229480868, now seen corresponding path program 1 times [2020-08-21 22:22:11,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:22:11,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79504617] [2020-08-21 22:22:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:22:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat