/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:34:25,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:34:25,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:34:25,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:34:25,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:34:25,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:34:25,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:34:25,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:34:25,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:34:25,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:34:25,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:34:25,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:34:25,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:34:25,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:34:25,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:34:25,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:34:25,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:34:25,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:34:25,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:34:25,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:34:25,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:34:25,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:34:25,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:34:25,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:34:25,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:34:25,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:34:25,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:34:25,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:34:25,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:34:25,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:34:25,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:34:25,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:34:25,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:34:25,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:34:25,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:34:25,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:34:25,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:34:25,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:34:25,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:34:25,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:34:25,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:34:25,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:34:25,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:34:25,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:34:25,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:34:25,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:34:25,262 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:34:25,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:34:25,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:34:25,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:34:25,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:34:25,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:34:25,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:34:25,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:34:25,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:34:25,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:34:25,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:34:25,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:34:25,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:34:25,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:34:25,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:34:25,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:34:25,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:34:25,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:34:25,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:34:25,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:34:25,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:34:25,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:34:25,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:34:25,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:34:25,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:34:25,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:34:25,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:34:25,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:34:25,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:34:25,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:34:25,766 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:34:25,767 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 12:34:25,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b09686d1/d179048b004c4de89d2dc34e0ee19dc5/FLAG56eb7000f [2020-09-25 12:34:26,443 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:34:26,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 12:34:26,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b09686d1/d179048b004c4de89d2dc34e0ee19dc5/FLAG56eb7000f [2020-09-25 12:34:26,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b09686d1/d179048b004c4de89d2dc34e0ee19dc5 [2020-09-25 12:34:26,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:34:26,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:34:26,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:34:26,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:34:26,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:34:26,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:34:26" (1/1) ... [2020-09-25 12:34:26,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c4011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:26, skipping insertion in model container [2020-09-25 12:34:26,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:34:26" (1/1) ... [2020-09-25 12:34:26,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:34:26,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:34:27,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:34:27,344 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:34:27,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:34:27,670 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:34:27,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27 WrapperNode [2020-09-25 12:34:27,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:34:27,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:34:27,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:34:27,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:34:27,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... [2020-09-25 12:34:27,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... [2020-09-25 12:34:27,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... [2020-09-25 12:34:27,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... [2020-09-25 12:34:27,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... [2020-09-25 12:34:27,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... [2020-09-25 12:34:27,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... [2020-09-25 12:34:27,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:34:27,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:34:27,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:34:27,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:34:27,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:34:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:34:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:34:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:34:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:34:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:34:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 12:34:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 12:34:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 12:34:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 12:34:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:34:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:34:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 12:34:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 12:34:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 12:34:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 12:34:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 12:34:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 12:34:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 12:34:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:34:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:34:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:34:29,764 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:34:29,764 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:34:29,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:34:29 BoogieIcfgContainer [2020-09-25 12:34:29,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:34:29,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:34:29,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:34:29,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:34:29,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:34:26" (1/3) ... [2020-09-25 12:34:29,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beac813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:34:29, skipping insertion in model container [2020-09-25 12:34:29,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:34:27" (2/3) ... [2020-09-25 12:34:29,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beac813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:34:29, skipping insertion in model container [2020-09-25 12:34:29,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:34:29" (3/3) ... [2020-09-25 12:34:29,799 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 12:34:29,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:34:29,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:34:29,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:34:29,878 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:34:29,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:34:29,878 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:34:29,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:34:29,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:34:29,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:34:29,878 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:34:29,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:34:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 12:34:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-25 12:34:29,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:34:29,948 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] [2020-09-25 12:34:29,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:34:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:34:29,958 INFO L82 PathProgramCache]: Analyzing trace with hash -361300248, now seen corresponding path program 1 times [2020-09-25 12:34:29,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:34:29,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824155802] [2020-09-25 12:34:29,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:34:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:34:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:35,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:34:35,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-09-25 12:34:35,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:34:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 12:34:35,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:34:35,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:34:35,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:34:35,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-09-25 12:34:35,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:34:35,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:34:36,240 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 12:34:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:34:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:34:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:34:36,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:34:36,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:34:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 12:34:36,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:34:36,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:34:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:34:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:34:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:34:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:34:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:34:36,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824155802] [2020-09-25 12:34:36,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:34:36,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:34:36,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069730157] [2020-09-25 12:34:36,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:34:36,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:34:36,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:34:36,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:34:36,922 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 12:34:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:34:42,851 INFO L93 Difference]: Finished difference Result 2027 states and 2695 transitions. [2020-09-25 12:34:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:34:42,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-09-25 12:34:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:34:42,891 INFO L225 Difference]: With dead ends: 2027 [2020-09-25 12:34:42,891 INFO L226 Difference]: Without dead ends: 1221 [2020-09-25 12:34:42,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:34:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-09-25 12:34:43,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1219. [2020-09-25 12:34:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2020-09-25 12:34:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1482 transitions. [2020-09-25 12:34:43,049 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1482 transitions. Word has length 407 [2020-09-25 12:34:43,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:34:43,054 INFO L479 AbstractCegarLoop]: Abstraction has 1219 states and 1482 transitions. [2020-09-25 12:34:43,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:34:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1482 transitions. [2020-09-25 12:34:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-25 12:34:43,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:34:43,068 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] [2020-09-25 12:34:43,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:34:43,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:34:43,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:34:43,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1191916941, now seen corresponding path program 1 times [2020-09-25 12:34:43,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:34:43,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407748995] [2020-09-25 12:34:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:34:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:34:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:43,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:34:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-09-25 12:34:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:34:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-09-25 12:34:48,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:34:48,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:34:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:34:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 12:34:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:34:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 12:34:48,686 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 12:34:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:34:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:34:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:48,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:34:48,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:34:48,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:34:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:34:48,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:34:48,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:34:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:34:48,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:34:48,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:34:48,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:34:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:34:49,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407748995] [2020-09-25 12:34:49,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:34:49,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:34:49,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181585311] [2020-09-25 12:34:49,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:34:49,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:34:49,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:34:49,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:34:49,227 INFO L87 Difference]: Start difference. First operand 1219 states and 1482 transitions. Second operand 5 states. [2020-09-25 12:34:54,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:34:54,306 INFO L93 Difference]: Finished difference Result 3023 states and 3729 transitions. [2020-09-25 12:34:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:34:54,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 408 [2020-09-25 12:34:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:34:54,319 INFO L225 Difference]: With dead ends: 3023 [2020-09-25 12:34:54,319 INFO L226 Difference]: Without dead ends: 2185 [2020-09-25 12:34:54,323 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 12:34:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2020-09-25 12:34:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2183. [2020-09-25 12:34:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-25 12:34:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2667 transitions. [2020-09-25 12:34:54,447 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2667 transitions. Word has length 408 [2020-09-25 12:34:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:34:54,448 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 2667 transitions. [2020-09-25 12:34:54,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:34:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2667 transitions. [2020-09-25 12:34:54,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-25 12:34:54,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:34:54,466 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] [2020-09-25 12:34:54,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:34:54,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:34:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:34:54,467 INFO L82 PathProgramCache]: Analyzing trace with hash 198264028, now seen corresponding path program 1 times [2020-09-25 12:34:54,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:34:54,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484610818] [2020-09-25 12:34:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:34:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:34:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:34:59,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:34:59,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-09-25 12:34:59,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:34:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:34:59,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:34:59,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:34:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:34:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-09-25 12:34:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-25 12:34:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:34:59,989 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 12:34:59,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:34:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:00,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:35:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:35:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:35:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:35:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:35:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:35:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:35:00,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484610818] [2020-09-25 12:35:00,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:35:00,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:35:00,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804356400] [2020-09-25 12:35:00,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:35:00,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:35:00,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:35:00,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:35:00,379 INFO L87 Difference]: Start difference. First operand 2183 states and 2667 transitions. Second operand 5 states. [2020-09-25 12:35:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:35:05,205 INFO L93 Difference]: Finished difference Result 5911 states and 7280 transitions. [2020-09-25 12:35:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:35:05,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-09-25 12:35:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:35:05,226 INFO L225 Difference]: With dead ends: 5911 [2020-09-25 12:35:05,226 INFO L226 Difference]: Without dead ends: 4075 [2020-09-25 12:35:05,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:35:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-09-25 12:35:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4073. [2020-09-25 12:35:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4073 states. [2020-09-25 12:35:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 4976 transitions. [2020-09-25 12:35:05,437 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 4976 transitions. Word has length 409 [2020-09-25 12:35:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:35:05,442 INFO L479 AbstractCegarLoop]: Abstraction has 4073 states and 4976 transitions. [2020-09-25 12:35:05,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:35:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 4976 transitions. [2020-09-25 12:35:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-09-25 12:35:05,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:35:05,456 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] [2020-09-25 12:35:05,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:35:05,457 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:35:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:35:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash 701650925, now seen corresponding path program 1 times [2020-09-25 12:35:05,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:35:05,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511050567] [2020-09-25 12:35:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:35:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:10,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-09-25 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:35:10,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:10,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:35:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 12:35:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 12:35:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:10,913 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 12:35:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:35:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:35:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:35:10,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:35:10,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:35:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:35:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:35:10,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:35:10,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:35:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:35:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:35:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:35:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:35:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:35:11,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511050567] [2020-09-25 12:35:11,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:35:11,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:35:11,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362103976] [2020-09-25 12:35:11,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:35:11,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:35:11,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:35:11,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:35:11,202 INFO L87 Difference]: Start difference. First operand 4073 states and 4976 transitions. Second operand 5 states.