/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:55:09,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:55:09,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:55:10,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:55:10,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:55:10,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:55:10,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:55:10,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:55:10,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:55:10,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:55:10,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:55:10,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:55:10,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:55:10,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:55:10,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:55:10,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:55:10,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:55:10,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:55:10,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:55:10,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:55:10,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:55:10,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:55:10,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:55:10,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:55:10,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:55:10,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:55:10,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:55:10,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:55:10,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:55:10,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:55:10,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:55:10,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:55:10,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:55:10,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:55:10,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:55:10,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:55:10,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:55:10,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:55:10,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:55:10,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:55:10,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:55:10,101 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 06:55:10,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:55:10,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:55:10,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:55:10,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:55:10,146 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:55:10,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:55:10,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:55:10,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:55:10,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:55:10,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:55:10,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:55:10,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:55:10,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:55:10,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:55:10,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:55:10,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:55:10,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:55:10,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:55:10,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:55:10,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:55:10,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:55:10,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:55:10,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:55:10,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:55:10,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:55:10,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:55:10,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:55:10,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:55:10,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:55:10,152 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:55:10,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:55:10,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:55:10,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:55:10,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:55:10,618 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:55:10,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 06:55:10,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/960e3bcbf/40bc94ccf1e84bdc8f218e9c216a74e3/FLAGf853f22da [2020-09-25 06:55:11,385 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:55:11,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 06:55:11,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/960e3bcbf/40bc94ccf1e84bdc8f218e9c216a74e3/FLAGf853f22da [2020-09-25 06:55:11,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/960e3bcbf/40bc94ccf1e84bdc8f218e9c216a74e3 [2020-09-25 06:55:11,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:55:11,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:55:11,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:55:11,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:55:11,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:55:11,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:55:11" (1/1) ... [2020-09-25 06:55:11,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:11, skipping insertion in model container [2020-09-25 06:55:11,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:55:11" (1/1) ... [2020-09-25 06:55:11,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:55:11,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:55:12,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:55:12,415 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:55:12,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:55:12,639 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:55:12,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12 WrapperNode [2020-09-25 06:55:12,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:55:12,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:55:12,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:55:12,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:55:12,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... [2020-09-25 06:55:12,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... [2020-09-25 06:55:12,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... [2020-09-25 06:55:12,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... [2020-09-25 06:55:12,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... [2020-09-25 06:55:12,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... [2020-09-25 06:55:12,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... [2020-09-25 06:55:12,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:55:12,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:55:12,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:55:12,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:55:12,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:55:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:55:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:55:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 06:55:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 06:55:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 06:55:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 06:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 06:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 06:55:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 06:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 06:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 06:55:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 06:55:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 06:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 06:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 06:55:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:55:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:55:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:55:15,046 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:55:15,046 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:55:15,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:55:15 BoogieIcfgContainer [2020-09-25 06:55:15,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:55:15,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:55:15,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:55:15,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:55:15,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:55:11" (1/3) ... [2020-09-25 06:55:15,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca74d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:55:15, skipping insertion in model container [2020-09-25 06:55:15,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:12" (2/3) ... [2020-09-25 06:55:15,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca74d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:55:15, skipping insertion in model container [2020-09-25 06:55:15,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:55:15" (3/3) ... [2020-09-25 06:55:15,076 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 06:55:15,088 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:55:15,103 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 06:55:15,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 06:55:15,154 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:55:15,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:55:15,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:55:15,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:55:15,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:55:15,155 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:55:15,155 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:55:15,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:55:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-25 06:55:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 06:55:15,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:55:15,245 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] [2020-09-25 06:55:15,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:55:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:55:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-25 06:55:15,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:55:15,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293270459] [2020-09-25 06:55:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:55:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:17,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:17,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:20,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:20,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 06:55:20,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:55:20,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 06:55:20,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:20,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:55:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-25 06:55:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 06:55:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:55:21,551 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 06:55:21,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:55:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:21,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:21,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:55:21,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:55:21,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:21,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:21,962 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 06:55:21,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293270459] [2020-09-25 06:55:21,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:55:21,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:55:21,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141792516] [2020-09-25 06:55:21,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:55:21,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:55:22,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:55:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:55:22,011 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-25 06:55:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:55:26,418 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-25 06:55:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:55:26,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-25 06:55:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:55:26,453 INFO L225 Difference]: With dead ends: 1830 [2020-09-25 06:55:26,453 INFO L226 Difference]: Without dead ends: 1312 [2020-09-25 06:55:26,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:55:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-25 06:55:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-25 06:55:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 06:55:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-25 06:55:26,617 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-25 06:55:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:55:26,623 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-25 06:55:26,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:55:26,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-25 06:55:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 06:55:26,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:55:26,638 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] [2020-09-25 06:55:26,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:55:26,639 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:55:26,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:55:26,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-25 06:55:26,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:55:26,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262121122] [2020-09-25 06:55:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:55:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:31,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:31,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 06:55:31,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:55:31,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 06:55:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:31,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:55:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 06:55:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 06:55:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:55:32,501 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 06:55:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:55:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:32,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:32,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:32,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:55:32,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:55:32,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:32,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:33,131 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 06:55:33,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262121122] [2020-09-25 06:55:33,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:55:33,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:55:33,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515066645] [2020-09-25 06:55:33,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:55:33,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:55:33,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:55:33,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:55:33,139 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-25 06:55:40,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:55:40,602 INFO L93 Difference]: Finished difference Result 3464 states and 4203 transitions. [2020-09-25 06:55:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:55:40,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-25 06:55:40,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:55:40,619 INFO L225 Difference]: With dead ends: 3464 [2020-09-25 06:55:40,619 INFO L226 Difference]: Without dead ends: 2371 [2020-09-25 06:55:40,628 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 [2020-09-25 06:55:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-09-25 06:55:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2246. [2020-09-25 06:55:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2246 states. [2020-09-25 06:55:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 2730 transitions. [2020-09-25 06:55:40,736 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 2730 transitions. Word has length 414 [2020-09-25 06:55:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:55:40,737 INFO L479 AbstractCegarLoop]: Abstraction has 2246 states and 2730 transitions. [2020-09-25 06:55:40,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:55:40,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 2730 transitions. [2020-09-25 06:55:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 06:55:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:55:40,748 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] [2020-09-25 06:55:40,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:55:40,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:55:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:55:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1512250717, now seen corresponding path program 1 times [2020-09-25 06:55:40,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:55:40,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951580394] [2020-09-25 06:55:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:55:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:41,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:42,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:44,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:45,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:45,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-25 06:55:45,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:55:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-09-25 06:55:45,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:45,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:55:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 06:55:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 06:55:45,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:46,323 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 06:55:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:55:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:55:46,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:55:46,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:46,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:46,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:46,704 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 06:55:46,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951580394] [2020-09-25 06:55:46,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:55:46,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:55:46,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973039412] [2020-09-25 06:55:46,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:55:46,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:55:46,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:55:46,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:55:46,710 INFO L87 Difference]: Start difference. First operand 2246 states and 2730 transitions. Second operand 5 states. [2020-09-25 06:55:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:55:52,869 INFO L93 Difference]: Finished difference Result 6208 states and 7594 transitions. [2020-09-25 06:55:52,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:55:52,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-25 06:55:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:55:52,889 INFO L225 Difference]: With dead ends: 6208 [2020-09-25 06:55:52,889 INFO L226 Difference]: Without dead ends: 4164 [2020-09-25 06:55:52,894 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 [2020-09-25 06:55:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2020-09-25 06:55:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4056. [2020-09-25 06:55:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4056 states. [2020-09-25 06:55:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4949 transitions. [2020-09-25 06:55:53,041 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4949 transitions. Word has length 415 [2020-09-25 06:55:53,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:55:53,043 INFO L479 AbstractCegarLoop]: Abstraction has 4056 states and 4949 transitions. [2020-09-25 06:55:53,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:55:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4949 transitions. [2020-09-25 06:55:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-25 06:55:53,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:55:53,058 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] [2020-09-25 06:55:53,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:55:53,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:55:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:55:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1711630169, now seen corresponding path program 1 times [2020-09-25 06:55:53,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:55:53,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445904598] [2020-09-25 06:55:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:55:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:54,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:58,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:58,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-25 06:55:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:55:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 06:55:58,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:58,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:55:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-25 06:55:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 06:55:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4