/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=LOWLEXORDER --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 [2020-09-24 21:53:59,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:53:59,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:53:59,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:53:59,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:53:59,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:53:59,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:53:59,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:53:59,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:53:59,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:53:59,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:53:59,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:53:59,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:53:59,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:53:59,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:53:59,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:53:59,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:53:59,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:53:59,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:53:59,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:53:59,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:53:59,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:53:59,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:53:59,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:53:59,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:53:59,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:53:59,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:53:59,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:53:59,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:53:59,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:53:59,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:53:59,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:53:59,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:53:59,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:53:59,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:53:59,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:53:59,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:53:59,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:53:59,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:53:59,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:53:59,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:53:59,738 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 21:53:59,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:53:59,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:53:59,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:53:59,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:53:59,767 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:53:59,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:53:59,768 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:53:59,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:53:59,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:53:59,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:53:59,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:53:59,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:53:59,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:53:59,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:53:59,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:53:59,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:53:59,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:53:59,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:53:59,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:53:59,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:53:59,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:53:59,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:53:59,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:53:59,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:53:59,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:53:59,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:53:59,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:53:59,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:53:59,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:53:59,773 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:54:00,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:54:00,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:54:00,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:54:00,293 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:54:00,294 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:54:00,295 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 21:54:00,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dee9951c8/f0a0d84b72924b43afd302a5cad15869/FLAG139008bfe [2020-09-24 21:54:01,094 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:54:01,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 21:54:01,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dee9951c8/f0a0d84b72924b43afd302a5cad15869/FLAG139008bfe [2020-09-24 21:54:01,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dee9951c8/f0a0d84b72924b43afd302a5cad15869 [2020-09-24 21:54:01,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:54:01,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:54:01,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:54:01,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:54:01,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:54:01,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:54:01" (1/1) ... [2020-09-24 21:54:01,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212db271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:01, skipping insertion in model container [2020-09-24 21:54:01,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:54:01" (1/1) ... [2020-09-24 21:54:01,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:54:01,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:54:02,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:54:02,280 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:54:02,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:54:02,701 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:54:02,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02 WrapperNode [2020-09-24 21:54:02,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:54:02,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:54:02,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:54:02,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:54:02,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (1/1) ... [2020-09-24 21:54:02,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (1/1) ... [2020-09-24 21:54:02,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (1/1) ... [2020-09-24 21:54:02,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (1/1) ... [2020-09-24 21:54:02,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (1/1) ... [2020-09-24 21:54:02,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (1/1) ... [2020-09-24 21:54:02,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (1/1) ... [2020-09-24 21:54:02,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:54:02,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:54:02,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:54:02,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:54:02,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (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 21:54:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:54:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:54:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:54:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:54:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:54:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 21:54:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 21:54:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 21:54:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:54:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:54:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 21:54:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 21:54:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 21:54:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 21:54:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 21:54:02,955 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 21:54:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 21:54:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:54:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:54:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:54:05,114 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:54:05,114 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:54:05,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:54:05 BoogieIcfgContainer [2020-09-24 21:54:05,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:54:05,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:54:05,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:54:05,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:54:05,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:54:01" (1/3) ... [2020-09-24 21:54:05,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fb0d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:54:05, skipping insertion in model container [2020-09-24 21:54:05,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:54:02" (2/3) ... [2020-09-24 21:54:05,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fb0d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:54:05, skipping insertion in model container [2020-09-24 21:54:05,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:54:05" (3/3) ... [2020-09-24 21:54:05,138 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 21:54:05,151 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:54:05,162 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 21:54:05,185 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 21:54:05,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:54:05,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:54:05,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:54:05,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:54:05,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:54:05,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:54:05,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:54:05,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:54:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-24 21:54:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-24 21:54:05,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:05,306 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] [2020-09-24 21:54:05,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:05,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-24 21:54:05,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:05,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552210748] [2020-09-24 21:54:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:10,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:10,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-09-24 21:54:10,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:54:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-24 21:54:10,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:54:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-09-24 21:54:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 21:54:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:54:11,623 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 21:54:11,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:54:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:11,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:11,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:54:11,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:54:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:54:11,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:54:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:54:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:54:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:54:12,172 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 21:54:12,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552210748] [2020-09-24 21:54:12,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:54:12,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:54:12,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778005953] [2020-09-24 21:54:12,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:54:12,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:54:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:54:12,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:54:12,226 INFO L87 Difference]: Start difference. First operand 1237 states. Second operand 5 states. [2020-09-24 21:54:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:21,525 INFO L93 Difference]: Finished difference Result 3246 states and 4159 transitions. [2020-09-24 21:54:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:54:21,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-09-24 21:54:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:21,569 INFO L225 Difference]: With dead ends: 3246 [2020-09-24 21:54:21,569 INFO L226 Difference]: Without dead ends: 1961 [2020-09-24 21:54:21,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2020-09-24 21:54:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1834. [2020-09-24 21:54:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1834 states. [2020-09-24 21:54:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2171 transitions. [2020-09-24 21:54:21,742 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2171 transitions. Word has length 465 [2020-09-24 21:54:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:21,744 INFO L479 AbstractCegarLoop]: Abstraction has 1834 states and 2171 transitions. [2020-09-24 21:54:21,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2171 transitions. [2020-09-24 21:54:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-24 21:54:21,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:21,759 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] [2020-09-24 21:54:21,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:54:21,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1171018046, now seen corresponding path program 1 times [2020-09-24 21:54:21,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:21,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598075773] [2020-09-24 21:54:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:22,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:26,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:26,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-09-24 21:54:26,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:54:26,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 21:54:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:54:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-24 21:54:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:54:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:27,431 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 21:54:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:54:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:27,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:27,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:54:27,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:54:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 21:54:27,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:54:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:54:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:54:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:28,060 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 21:54:28,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598075773] [2020-09-24 21:54:28,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:54:28,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:54:28,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775276843] [2020-09-24 21:54:28,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:54:28,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:54:28,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:54:28,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:54:28,069 INFO L87 Difference]: Start difference. First operand 1834 states and 2171 transitions. Second operand 5 states. [2020-09-24 21:54:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:35,788 INFO L93 Difference]: Finished difference Result 4982 states and 5939 transitions. [2020-09-24 21:54:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:54:35,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-09-24 21:54:35,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:35,808 INFO L225 Difference]: With dead ends: 4982 [2020-09-24 21:54:35,808 INFO L226 Difference]: Without dead ends: 3376 [2020-09-24 21:54:35,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2020-09-24 21:54:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3261. [2020-09-24 21:54:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3261 states. [2020-09-24 21:54:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 3884 transitions. [2020-09-24 21:54:35,945 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 3884 transitions. Word has length 466 [2020-09-24 21:54:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:35,946 INFO L479 AbstractCegarLoop]: Abstraction has 3261 states and 3884 transitions. [2020-09-24 21:54:35,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 3884 transitions. [2020-09-24 21:54:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-09-24 21:54:35,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:35,956 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] [2020-09-24 21:54:35,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:54:35,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:35,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1744253298, now seen corresponding path program 1 times [2020-09-24 21:54:35,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:35,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606120969] [2020-09-24 21:54:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:36,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:41,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-09-24 21:54:41,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:54:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-09-24 21:54:41,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:54:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-24 21:54:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:54:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:41,572 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 21:54:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:54:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:41,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:41,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:54:41,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:54:41,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 21:54:41,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:54:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:54:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:54:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:41,963 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 21:54:41,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606120969] [2020-09-24 21:54:41,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:54:41,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:54:41,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850964803] [2020-09-24 21:54:41,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:54:41,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:54:41,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:54:41,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:54:41,967 INFO L87 Difference]: Start difference. First operand 3261 states and 3884 transitions. Second operand 5 states. [2020-09-24 21:54:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:48,821 INFO L93 Difference]: Finished difference Result 9121 states and 10884 transitions. [2020-09-24 21:54:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:54:48,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2020-09-24 21:54:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:48,852 INFO L225 Difference]: With dead ends: 9121 [2020-09-24 21:54:48,852 INFO L226 Difference]: Without dead ends: 6121 [2020-09-24 21:54:48,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2020-09-24 21:54:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 5987. [2020-09-24 21:54:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5987 states. [2020-09-24 21:54:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 7128 transitions. [2020-09-24 21:54:49,087 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 7128 transitions. Word has length 467 [2020-09-24 21:54:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:49,087 INFO L479 AbstractCegarLoop]: Abstraction has 5987 states and 7128 transitions. [2020-09-24 21:54:49,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 7128 transitions. [2020-09-24 21:54:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-09-24 21:54:49,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:49,103 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] [2020-09-24 21:54:49,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:54:49,103 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:49,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:49,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1593495664, now seen corresponding path program 1 times [2020-09-24 21:54:49,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:49,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291263866] [2020-09-24 21:54:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking...