/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:34:56,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:34:56,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:34:56,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:34:56,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:34:56,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:34:56,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:34:56,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:34:56,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:34:56,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:34:56,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:34:56,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:34:56,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:34:56,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:34:56,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:34:56,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:34:56,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:34:56,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:34:56,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:34:57,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:34:57,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:34:57,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:34:57,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:34:57,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:34:57,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:34:57,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:34:57,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:34:57,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:34:57,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:34:57,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:34:57,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:34:57,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:34:57,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:34:57,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:34:57,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:34:57,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:34:57,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:34:57,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:34:57,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:34:57,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:34:57,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:34:57,018 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 [2020-09-25 12:34:57,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:34:57,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:34:57,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:34:57,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:34:57,047 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:34:57,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:34:57,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:34:57,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:34:57,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:34:57,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:34:57,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:34:57,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:34:57,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:34:57,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:34:57,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:34:57,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:34:57,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:34:57,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:34:57,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:34:57,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:34:57,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:34:57,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:34:57,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:34:57,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:34:57,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:34:57,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:34:57,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:34:57,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:34:57,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:34:57,052 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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:34:57,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:34:57,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:34:57,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:34:57,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:34:57,579 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:34:57,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 12:34:57,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daee003a0/fa3931ec8b2840678d50fb969226d57d/FLAGa4230778e [2020-09-25 12:34:58,362 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:34:58,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 12:34:58,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daee003a0/fa3931ec8b2840678d50fb969226d57d/FLAGa4230778e [2020-09-25 12:34:58,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daee003a0/fa3931ec8b2840678d50fb969226d57d [2020-09-25 12:34:58,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:34:58,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:34:58,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:34:58,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:34:58,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:34:58,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:34:58" (1/1) ... [2020-09-25 12:34:58,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:58, skipping insertion in model container [2020-09-25 12:34:58,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:34:58" (1/1) ... [2020-09-25 12:34:58,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:34:58,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:34:59,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:34:59,464 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:34:59,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:35:00,019 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:35:00,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00 WrapperNode [2020-09-25 12:35:00,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:35:00,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:35:00,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:35:00,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:35:00,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (1/1) ... [2020-09-25 12:35:00,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (1/1) ... [2020-09-25 12:35:00,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (1/1) ... [2020-09-25 12:35:00,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (1/1) ... [2020-09-25 12:35:00,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (1/1) ... [2020-09-25 12:35:00,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (1/1) ... [2020-09-25 12:35:00,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (1/1) ... [2020-09-25 12:35:00,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:35:00,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:35:00,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:35:00,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:35:00,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (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 [2020-09-25 12:35:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:35:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:35:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:35:00,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:35:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:35:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 12:35:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 12:35:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 12:35:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:35:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:35:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 12:35:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 12:35:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 12:35:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 12:35:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 12:35:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 12:35:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 12:35:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:35:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:35:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:35:02,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:35:02,422 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:35:02,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:35:02 BoogieIcfgContainer [2020-09-25 12:35:02,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:35:02,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:35:02,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:35:02,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:35:02,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:34:58" (1/3) ... [2020-09-25 12:35:02,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3876123d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:35:02, skipping insertion in model container [2020-09-25 12:35:02,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:35:00" (2/3) ... [2020-09-25 12:35:02,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3876123d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:35:02, skipping insertion in model container [2020-09-25 12:35:02,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:35:02" (3/3) ... [2020-09-25 12:35:02,455 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 12:35:02,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:35:02,481 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 12:35:02,503 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 12:35:02,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:35:02,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:35:02,541 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:35:02,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:35:02,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:35:02,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:35:02,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:35:02,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:35:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-25 12:35:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 12:35:02,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:35:02,627 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] [2020-09-25 12:35:02,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:35:02,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:35:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-25 12:35:02,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:35:02,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804302946] [2020-09-25 12:35:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:35:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:08,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 12:35:08,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:35:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 12:35:08,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:08,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:35:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-09-25 12:35:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 12:35:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:35:09,030 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 12:35:09,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:35:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:09,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:09,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:35:09,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:35:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 12:35:09,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:09,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:35:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:35:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:35:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:35:09,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804302946] [2020-09-25 12:35:09,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:35:09,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:35:09,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308391170] [2020-09-25 12:35:09,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:35:09,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:35:09,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:35:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:35:09,470 INFO L87 Difference]: Start difference. First operand 1237 states. Second operand 4 states. [2020-09-25 12:35:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:35:14,053 INFO L93 Difference]: Finished difference Result 2024 states and 2590 transitions. [2020-09-25 12:35:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:35:14,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-09-25 12:35:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:35:14,105 INFO L225 Difference]: With dead ends: 2024 [2020-09-25 12:35:14,105 INFO L226 Difference]: Without dead ends: 1455 [2020-09-25 12:35:14,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:35:14,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-09-25 12:35:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1448. [2020-09-25 12:35:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-09-25 12:35:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1727 transitions. [2020-09-25 12:35:14,241 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1727 transitions. Word has length 465 [2020-09-25 12:35:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:35:14,247 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 1727 transitions. [2020-09-25 12:35:14,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:35:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1727 transitions. [2020-09-25 12:35:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 12:35:14,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:35:14,261 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] [2020-09-25 12:35:14,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:35:14,263 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:35:14,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:35:14,263 INFO L82 PathProgramCache]: Analyzing trace with hash 888544568, now seen corresponding path program 1 times [2020-09-25 12:35:14,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:35:14,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989816526] [2020-09-25 12:35:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:35:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:15,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:15,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:18,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:19,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:19,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-25 12:35:19,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:35:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:35:19,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:19,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:35:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 12:35:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 12:35:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:20,017 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 12:35:20,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:35:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:20,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:20,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:35:20,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:35:20,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:35:20,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:20,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:35:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:35:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:35:20,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:35:20,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989816526] [2020-09-25 12:35:20,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:35:20,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:35:20,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624106038] [2020-09-25 12:35:20,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:35:20,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:35:20,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:35:20,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:35:20,451 INFO L87 Difference]: Start difference. First operand 1448 states and 1727 transitions. Second operand 5 states. [2020-09-25 12:35:27,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:35:27,789 INFO L93 Difference]: Finished difference Result 3758 states and 4526 transitions. [2020-09-25 12:35:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:35:27,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-09-25 12:35:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:35:27,804 INFO L225 Difference]: With dead ends: 3758 [2020-09-25 12:35:27,804 INFO L226 Difference]: Without dead ends: 2632 [2020-09-25 12:35:27,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:35:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-09-25 12:35:27,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2505. [2020-09-25 12:35:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2505 states. [2020-09-25 12:35:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3021 transitions. [2020-09-25 12:35:27,901 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3021 transitions. Word has length 465 [2020-09-25 12:35:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:35:27,902 INFO L479 AbstractCegarLoop]: Abstraction has 2505 states and 3021 transitions. [2020-09-25 12:35:27,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:35:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3021 transitions. [2020-09-25 12:35:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-25 12:35:27,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:35:27,909 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] [2020-09-25 12:35:27,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:35:27,909 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:35:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:35:27,910 INFO L82 PathProgramCache]: Analyzing trace with hash 187069046, now seen corresponding path program 1 times [2020-09-25 12:35:27,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:35:27,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569691208] [2020-09-25 12:35:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:35:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:29,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:32,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:33,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:33,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-09-25 12:35:33,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:35:33,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 12:35:33,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:33,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:35:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-09-25 12:35:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 12:35:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:33,624 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-25 12:35:33,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:35:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:33,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:33,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:35:33,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:35:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 12:35:33,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:33,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:35:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:35:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:35:33,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:35:34,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569691208] [2020-09-25 12:35:34,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:35:34,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:35:34,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528994565] [2020-09-25 12:35:34,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:35:34,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:35:34,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:35:34,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:35:34,035 INFO L87 Difference]: Start difference. First operand 2505 states and 3021 transitions. Second operand 5 states. [2020-09-25 12:35:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:35:41,078 INFO L93 Difference]: Finished difference Result 6744 states and 8175 transitions. [2020-09-25 12:35:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:35:41,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-09-25 12:35:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:35:41,099 INFO L225 Difference]: With dead ends: 6744 [2020-09-25 12:35:41,099 INFO L226 Difference]: Without dead ends: 4687 [2020-09-25 12:35:41,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:35:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2020-09-25 12:35:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4560. [2020-09-25 12:35:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2020-09-25 12:35:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 5523 transitions. [2020-09-25 12:35:41,278 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 5523 transitions. Word has length 466 [2020-09-25 12:35:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:35:41,279 INFO L479 AbstractCegarLoop]: Abstraction has 4560 states and 5523 transitions. [2020-09-25 12:35:41,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:35:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 5523 transitions. [2020-09-25 12:35:41,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-09-25 12:35:41,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:35:41,289 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] [2020-09-25 12:35:41,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:35:41,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:35:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:35:41,290 INFO L82 PathProgramCache]: Analyzing trace with hash -658511710, now seen corresponding path program 1 times [2020-09-25 12:35:41,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:35:41,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677555094] [2020-09-25 12:35:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:35:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:43,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking...