/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:08:01,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:08:01,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:08:01,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:08:01,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:08:01,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:08:01,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:08:01,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:08:01,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:08:01,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:08:01,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:08:01,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:08:01,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:08:01,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:08:01,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:08:01,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:08:01,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:08:01,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:08:01,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:08:01,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:08:01,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:08:01,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:08:01,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:08:01,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:08:01,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:08:01,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:08:01,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:08:01,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:08:01,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:08:01,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:08:01,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:08:01,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:08:01,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:08:01,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:08:01,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:08:01,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:08:01,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:08:01,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:08:01,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:08:01,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:08:01,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:08:01,211 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 00:08:01,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:08:01,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:08:01,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:08:01,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:08:01,259 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:08:01,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:08:01,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:08:01,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:08:01,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:08:01,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:08:01,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:08:01,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:08:01,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:08:01,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:08:01,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:08:01,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:08:01,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:08:01,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:08:01,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:08:01,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:08:01,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:08:01,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:08:01,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:08:01,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:08:01,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:08:01,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:08:01,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:08:01,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:08:01,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:08:01,266 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:08:01,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:08:01,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:08:01,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:08:01,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:08:01,733 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:08:01,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 00:08:01,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70759f719/a6070cf527854aef8b83919038b0c4e7/FLAGa2c3afc46 [2020-09-25 00:08:02,453 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:08:02,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 00:08:02,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70759f719/a6070cf527854aef8b83919038b0c4e7/FLAGa2c3afc46 [2020-09-25 00:08:02,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70759f719/a6070cf527854aef8b83919038b0c4e7 [2020-09-25 00:08:02,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:08:02,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:08:02,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:08:02,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:08:02,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:08:02,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:02" (1/1) ... [2020-09-25 00:08:02,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43889371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:02, skipping insertion in model container [2020-09-25 00:08:02,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:02" (1/1) ... [2020-09-25 00:08:02,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:08:02,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:08:03,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:08:03,502 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:08:03,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:08:03,957 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:08:03,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03 WrapperNode [2020-09-25 00:08:03,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:08:03,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:08:03,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:08:03,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:08:03,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:03,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:03,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:03,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:04,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:04,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:04,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (1/1) ... [2020-09-25 00:08:04,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:08:04,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:08:04,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:08:04,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:08:04,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (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 00:08:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:08:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:08:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:08:04,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:08:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:08:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 00:08:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:08:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 00:08:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:08:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:08:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 00:08:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 00:08:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 00:08:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 00:08:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 00:08:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 00:08:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:08:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:08:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:08:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:08:05,978 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:08:05,978 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:08:05,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:05 BoogieIcfgContainer [2020-09-25 00:08:05,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:08:05,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:08:05,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:08:05,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:08:05,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:08:02" (1/3) ... [2020-09-25 00:08:05,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb665ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:05, skipping insertion in model container [2020-09-25 00:08:05,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:03" (2/3) ... [2020-09-25 00:08:05,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb665ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:05, skipping insertion in model container [2020-09-25 00:08:05,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:05" (3/3) ... [2020-09-25 00:08:06,002 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 00:08:06,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:08:06,028 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:08:06,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:08:06,093 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:08:06,094 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:08:06,094 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:08:06,094 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:08:06,094 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:08:06,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:08:06,095 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:08:06,095 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:08:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states. [2020-09-25 00:08:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-25 00:08:06,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:06,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:06,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:06,197 INFO L82 PathProgramCache]: Analyzing trace with hash 752602954, now seen corresponding path program 1 times [2020-09-25 00:08:06,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:06,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806115753] [2020-09-25 00:08:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:07,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:11,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-09-25 00:08:11,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:08:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 00:08:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 00:08:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 00:08:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 00:08:12,800 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 00:08:12,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:12,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:12,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:08:12,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 00:08:12,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:13,503 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 00:08:13,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806115753] [2020-09-25 00:08:13,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:13,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:13,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098788246] [2020-09-25 00:08:13,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:13,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:13,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:13,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:13,550 INFO L87 Difference]: Start difference. First operand 912 states. Second operand 5 states. [2020-09-25 00:08:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:20,187 INFO L93 Difference]: Finished difference Result 2298 states and 3017 transitions. [2020-09-25 00:08:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:08:20,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-09-25 00:08:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:20,221 INFO L225 Difference]: With dead ends: 2298 [2020-09-25 00:08:20,222 INFO L226 Difference]: Without dead ends: 1409 [2020-09-25 00:08:20,232 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 00:08:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2020-09-25 00:08:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1407. [2020-09-25 00:08:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2020-09-25 00:08:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1703 transitions. [2020-09-25 00:08:20,380 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1703 transitions. Word has length 460 [2020-09-25 00:08:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:20,382 INFO L479 AbstractCegarLoop]: Abstraction has 1407 states and 1703 transitions. [2020-09-25 00:08:20,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1703 transitions. [2020-09-25 00:08:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-09-25 00:08:20,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:20,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:20,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:08:20,396 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1881384942, now seen corresponding path program 1 times [2020-09-25 00:08:20,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:20,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574555770] [2020-09-25 00:08:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:21,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:21,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:22,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:25,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-09-25 00:08:25,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:08:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 00:08:25,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-25 00:08:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 00:08:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:25,963 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 00:08:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:26,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:26,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:08:26,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 00:08:26,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:26,612 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 00:08:26,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574555770] [2020-09-25 00:08:26,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:26,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:26,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123175802] [2020-09-25 00:08:26,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:26,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:26,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:26,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:26,622 INFO L87 Difference]: Start difference. First operand 1407 states and 1703 transitions. Second operand 5 states. [2020-09-25 00:08:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:31,328 INFO L93 Difference]: Finished difference Result 3770 states and 4621 transitions. [2020-09-25 00:08:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:08:31,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 461 [2020-09-25 00:08:31,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:31,349 INFO L225 Difference]: With dead ends: 3770 [2020-09-25 00:08:31,349 INFO L226 Difference]: Without dead ends: 2549 [2020-09-25 00:08:31,357 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 00:08:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2020-09-25 00:08:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2547. [2020-09-25 00:08:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2547 states. [2020-09-25 00:08:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3094 transitions. [2020-09-25 00:08:31,475 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3094 transitions. Word has length 461 [2020-09-25 00:08:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:31,479 INFO L479 AbstractCegarLoop]: Abstraction has 2547 states and 3094 transitions. [2020-09-25 00:08:31,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3094 transitions. [2020-09-25 00:08:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-09-25 00:08:31,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:31,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:31,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:08:31,495 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:31,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:31,496 INFO L82 PathProgramCache]: Analyzing trace with hash 887221220, now seen corresponding path program 1 times [2020-09-25 00:08:31,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:31,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867549492] [2020-09-25 00:08:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:36,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:36,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-09-25 00:08:36,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:08:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-25 00:08:36,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-25 00:08:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 00:08:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:08:37,241 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 00:08:37,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:37,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:08:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 00:08:37,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:37,581 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 00:08:37,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867549492] [2020-09-25 00:08:37,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:37,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:37,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019824974] [2020-09-25 00:08:37,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:37,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:37,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:37,585 INFO L87 Difference]: Start difference. First operand 2547 states and 3094 transitions. Second operand 5 states. [2020-09-25 00:08:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:42,598 INFO L93 Difference]: Finished difference Result 6975 states and 8504 transitions. [2020-09-25 00:08:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:08:42,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 462 [2020-09-25 00:08:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:42,624 INFO L225 Difference]: With dead ends: 6975 [2020-09-25 00:08:42,625 INFO L226 Difference]: Without dead ends: 4709 [2020-09-25 00:08:42,631 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 00:08:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2020-09-25 00:08:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4707. [2020-09-25 00:08:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2020-09-25 00:08:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 5704 transitions. [2020-09-25 00:08:42,873 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 5704 transitions. Word has length 462 [2020-09-25 00:08:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:42,875 INFO L479 AbstractCegarLoop]: Abstraction has 4707 states and 5704 transitions. [2020-09-25 00:08:42,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 5704 transitions. [2020-09-25 00:08:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-09-25 00:08:42,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:42,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:42,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:08:42,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash -970660380, now seen corresponding path program 1 times [2020-09-25 00:08:42,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:42,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928733406] [2020-09-25 00:08:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:43,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:43,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:48,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:48,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-09-25 00:08:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:08:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-09-25 00:08:48,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-25 00:08:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 00:08:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:08:48,531 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 00:08:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:48,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:08:48,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 00:08:48,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:08:48,988 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 00:08:48,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928733406] [2020-09-25 00:08:48,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:48,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:48,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868381016] [2020-09-25 00:08:48,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:48,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:48,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:48,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:48,991 INFO L87 Difference]: Start difference. First operand 4707 states and 5704 transitions. Second operand 5 states.