/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:13:32,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:13:32,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:13:32,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:13:32,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:13:32,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:13:32,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:13:32,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:13:32,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:13:32,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:13:32,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:13:32,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:13:32,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:13:32,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:13:32,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:13:32,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:13:32,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:13:32,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:13:32,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:13:32,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:13:32,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:13:32,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:13:32,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:13:32,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:13:32,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:13:32,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:13:32,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:13:32,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:13:32,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:13:32,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:13:32,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:13:32,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:13:32,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:13:32,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:13:32,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:13:32,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:13:32,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:13:32,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:13:32,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:13:32,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:13:32,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:13:32,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:13:32,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:13:32,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:13:32,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:13:32,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:13:32,765 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:13:32,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:13:32,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:13:32,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:13:32,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:13:32,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:13:32,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:13:32,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:13:32,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:13:32,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:13:32,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:13:32,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:13:32,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:13:32,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:13:32,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:13:32,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:13:32,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:13:32,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:13:32,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:13:32,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:13:32,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:13:32,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:13:32,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:13:32,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:13:32,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:13:32,772 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:13:33,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:13:33,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:13:33,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:13:33,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:13:33,236 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:13:33,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 16:13:33,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5db9f36a/a372c02a890144b1be8a544cf5e44f74/FLAGf8a1fe48b [2020-09-24 16:13:34,069 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:13:34,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 16:13:34,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5db9f36a/a372c02a890144b1be8a544cf5e44f74/FLAGf8a1fe48b [2020-09-24 16:13:34,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5db9f36a/a372c02a890144b1be8a544cf5e44f74 [2020-09-24 16:13:34,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:13:34,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:13:34,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:13:34,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:13:34,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:13:34,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:34" (1/1) ... [2020-09-24 16:13:34,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d70581e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:34, skipping insertion in model container [2020-09-24 16:13:34,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:34" (1/1) ... [2020-09-24 16:13:34,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:13:34,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:13:36,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:13:36,112 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:13:37,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:13:37,767 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:13:37,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37 WrapperNode [2020-09-24 16:13:37,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:13:37,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:13:37,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:13:37,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:13:37,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... [2020-09-24 16:13:37,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... [2020-09-24 16:13:37,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... [2020-09-24 16:13:37,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... [2020-09-24 16:13:37,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... [2020-09-24 16:13:37,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... [2020-09-24 16:13:37,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... [2020-09-24 16:13:38,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:13:38,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:13:38,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:13:38,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:13:38,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:13:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:13:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:13:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:13:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:13:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:13:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 16:13:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 16:13:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 16:13:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 16:13:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:13:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:13:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 16:13:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 16:13:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 16:13:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 16:13:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 16:13:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 16:13:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-24 16:13:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 16:13:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 16:13:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:13:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:13:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:13:42,859 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:13:42,860 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 16:13:42,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:42 BoogieIcfgContainer [2020-09-24 16:13:42,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:13:42,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:13:42,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:13:42,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:13:42,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:13:34" (1/3) ... [2020-09-24 16:13:42,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786ca1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:42, skipping insertion in model container [2020-09-24 16:13:42,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:37" (2/3) ... [2020-09-24 16:13:42,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786ca1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:42, skipping insertion in model container [2020-09-24 16:13:42,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:42" (3/3) ... [2020-09-24 16:13:42,890 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 16:13:42,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:13:42,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-24 16:13:42,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-24 16:13:43,002 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:13:43,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:13:43,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:13:43,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:13:43,003 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:13:43,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:13:43,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:13:43,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:13:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states. [2020-09-24 16:13:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1325 [2020-09-24 16:13:43,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:13:43,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:13:43,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:13:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:13:43,242 INFO L82 PathProgramCache]: Analyzing trace with hash 328574873, now seen corresponding path program 1 times [2020-09-24 16:13:43,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:13:43,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564558391] [2020-09-24 16:13:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:13:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:45,693 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:45,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:45,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:45,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1331 [2020-09-24 16:13:45,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:45,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 16:13:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:13:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-09-24 16:13:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-09-24 16:13:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:13:47,942 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-09-24 16:13:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:13:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:47,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:47,962 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:47,962 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:47,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 16:13:47,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:13:47,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:13:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:13:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:13:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:13:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:13:49,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564558391] [2020-09-24 16:13:49,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:13:49,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:13:49,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156051366] [2020-09-24 16:13:49,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:13:49,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:13:49,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:13:49,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:13:49,265 INFO L87 Difference]: Start difference. First operand 3352 states. Second operand 5 states. [2020-09-24 16:14:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:18,290 INFO L93 Difference]: Finished difference Result 9093 states and 12435 transitions. [2020-09-24 16:14:18,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:14:18,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1324 [2020-09-24 16:14:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:18,354 INFO L225 Difference]: With dead ends: 9093 [2020-09-24 16:14:18,354 INFO L226 Difference]: Without dead ends: 5720 [2020-09-24 16:14:18,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:14:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2020-09-24 16:14:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5567. [2020-09-24 16:14:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5567 states. [2020-09-24 16:14:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5567 states to 5567 states and 7277 transitions. [2020-09-24 16:14:18,680 INFO L78 Accepts]: Start accepts. Automaton has 5567 states and 7277 transitions. Word has length 1324 [2020-09-24 16:14:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:18,685 INFO L479 AbstractCegarLoop]: Abstraction has 5567 states and 7277 transitions. [2020-09-24 16:14:18,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:14:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5567 states and 7277 transitions. [2020-09-24 16:14:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2020-09-24 16:14:18,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:18,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:14:18,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:14:18,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:18,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1216254756, now seen corresponding path program 1 times [2020-09-24 16:14:18,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:18,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967022537] [2020-09-24 16:14:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:19,362 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:19,363 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:19,363 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:19,364 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:19,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1333 [2020-09-24 16:14:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:14:19,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:14:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-09-24 16:14:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-09-24 16:14:19,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:14:21,852 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 385 [2020-09-24 16:14:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:21,871 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:21,871 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:21,872 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:21,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:21,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 16:14:21,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:14:21,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:14:23,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967022537] [2020-09-24 16:14:23,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:23,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:14:23,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144038593] [2020-09-24 16:14:23,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:14:23,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:23,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:14:23,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:23,139 INFO L87 Difference]: Start difference. First operand 5567 states and 7277 transitions. Second operand 4 states.