/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=BIGGEST --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 [2020-09-24 20:44:58,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:44:58,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:44:59,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:44:59,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:44:59,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:44:59,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:44:59,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:44:59,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:44:59,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:44:59,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:44:59,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:44:59,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:44:59,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:44:59,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:44:59,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:44:59,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:44:59,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:44:59,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:44:59,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:44:59,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:44:59,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:44:59,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:44:59,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:44:59,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:44:59,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:44:59,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:44:59,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:44:59,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:44:59,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:44:59,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:44:59,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:44:59,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:44:59,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:44:59,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:44:59,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:44:59,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:44:59,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:44:59,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:44:59,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:44:59,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:44:59,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:44:59,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:44:59,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:44:59,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:44:59,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:44:59,098 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:44:59,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:44:59,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:44:59,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:44:59,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:44:59,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:44:59,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:44:59,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:44:59,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:44:59,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:44:59,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:44:59,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:44:59,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:44:59,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:44:59,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:44:59,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:44:59,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:44:59,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:44:59,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:44:59,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:44:59,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:44:59,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:44:59,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:44:59,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:44:59,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:44:59,105 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:44:59,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:44:59,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:44:59,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:44:59,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:44:59,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:44:59,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 20:44:59,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81d02f1a/2e11f844b8ac4c0ab05e038a53274801/FLAG5487e0273 [2020-09-24 20:45:00,347 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:45:00,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 20:45:00,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81d02f1a/2e11f844b8ac4c0ab05e038a53274801/FLAG5487e0273 [2020-09-24 20:45:00,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81d02f1a/2e11f844b8ac4c0ab05e038a53274801 [2020-09-24 20:45:00,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:45:00,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:45:00,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:45:00,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:45:00,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:45:00,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:00" (1/1) ... [2020-09-24 20:45:00,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c20215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:00, skipping insertion in model container [2020-09-24 20:45:00,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:00" (1/1) ... [2020-09-24 20:45:00,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:45:00,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:45:01,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:45:01,276 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:45:01,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:45:01,482 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:45:01,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01 WrapperNode [2020-09-24 20:45:01,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:45:01,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:45:01,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:45:01,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:45:01,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... [2020-09-24 20:45:01,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... [2020-09-24 20:45:01,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... [2020-09-24 20:45:01,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... [2020-09-24 20:45:01,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... [2020-09-24 20:45:01,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... [2020-09-24 20:45:01,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... [2020-09-24 20:45:01,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:45:01,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:45:01,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:45:01,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:45:01,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:45:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:45:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:45:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:45:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:45:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:45:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:45:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 20:45:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:45:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 20:45:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:45:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:45:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 20:45:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 20:45:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 20:45:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 20:45:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 20:45:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 20:45:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:45:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:45:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:45:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:45:03,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:45:03,434 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:45:03,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:03 BoogieIcfgContainer [2020-09-24 20:45:03,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:45:03,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:45:03,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:45:03,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:45:03,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:45:00" (1/3) ... [2020-09-24 20:45:03,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2099acda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:03, skipping insertion in model container [2020-09-24 20:45:03,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:01" (2/3) ... [2020-09-24 20:45:03,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2099acda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:03, skipping insertion in model container [2020-09-24 20:45:03,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:03" (3/3) ... [2020-09-24 20:45:03,455 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 20:45:03,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:45:03,478 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:45:03,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:45:03,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:45:03,537 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:45:03,537 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:45:03,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:45:03,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:45:03,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:45:03,538 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:45:03,538 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:45:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-24 20:45:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-24 20:45:03,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:03,605 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] [2020-09-24 20:45:03,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:03,615 INFO L82 PathProgramCache]: Analyzing trace with hash -361300248, now seen corresponding path program 1 times [2020-09-24 20:45:03,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:03,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99835993] [2020-09-24 20:45:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:09,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-09-24 20:45:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:45:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 20:45:09,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-09-24 20:45:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 20:45:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:45:10,053 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-24 20:45:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:45:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:45:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:45:10,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99835993] [2020-09-24 20:45:10,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:10,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:10,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168871300] [2020-09-24 20:45:10,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:10,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:10,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:10,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:10,695 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-24 20:45:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:16,857 INFO L93 Difference]: Finished difference Result 2027 states and 2695 transitions. [2020-09-24 20:45:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:45:16,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-09-24 20:45:16,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:16,902 INFO L225 Difference]: With dead ends: 2027 [2020-09-24 20:45:16,902 INFO L226 Difference]: Without dead ends: 1221 [2020-09-24 20:45:16,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:16,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-09-24 20:45:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1219. [2020-09-24 20:45:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2020-09-24 20:45:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1482 transitions. [2020-09-24 20:45:17,069 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1482 transitions. Word has length 407 [2020-09-24 20:45:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:17,071 INFO L479 AbstractCegarLoop]: Abstraction has 1219 states and 1482 transitions. [2020-09-24 20:45:17,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1482 transitions. [2020-09-24 20:45:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-24 20:45:17,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:17,080 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] [2020-09-24 20:45:17,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:45:17,081 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:17,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1191916941, now seen corresponding path program 1 times [2020-09-24 20:45:17,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:17,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790125944] [2020-09-24 20:45:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:20,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-09-24 20:45:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:45:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 20:45:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-24 20:45:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 20:45:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:22,599 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-24 20:45:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:22,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:22,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:45:22,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 20:45:22,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:45:23,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790125944] [2020-09-24 20:45:23,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:23,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:23,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750121961] [2020-09-24 20:45:23,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:23,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:23,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:23,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:23,214 INFO L87 Difference]: Start difference. First operand 1219 states and 1482 transitions. Second operand 5 states. [2020-09-24 20:45:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:28,355 INFO L93 Difference]: Finished difference Result 3023 states and 3729 transitions. [2020-09-24 20:45:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:45:28,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 408 [2020-09-24 20:45:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:28,373 INFO L225 Difference]: With dead ends: 3023 [2020-09-24 20:45:28,374 INFO L226 Difference]: Without dead ends: 2185 [2020-09-24 20:45:28,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2020-09-24 20:45:28,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2183. [2020-09-24 20:45:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-24 20:45:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2667 transitions. [2020-09-24 20:45:28,494 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2667 transitions. Word has length 408 [2020-09-24 20:45:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:28,496 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 2667 transitions. [2020-09-24 20:45:28,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2667 transitions. [2020-09-24 20:45:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-24 20:45:28,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:28,509 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] [2020-09-24 20:45:28,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:45:28,509 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash 198264028, now seen corresponding path program 1 times [2020-09-24 20:45:28,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:28,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369817077] [2020-09-24 20:45:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:30,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:33,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:33,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-09-24 20:45:33,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:45:33,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-24 20:45:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-24 20:45:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 20:45:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:34,026 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-24 20:45:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:34,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:34,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:45:34,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 20:45:34,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:45:34,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369817077] [2020-09-24 20:45:34,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:34,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:34,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136236204] [2020-09-24 20:45:34,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:34,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:34,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:34,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:34,385 INFO L87 Difference]: Start difference. First operand 2183 states and 2667 transitions. Second operand 5 states. [2020-09-24 20:45:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:39,110 INFO L93 Difference]: Finished difference Result 6088 states and 7495 transitions. [2020-09-24 20:45:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:45:39,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-09-24 20:45:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:39,131 INFO L225 Difference]: With dead ends: 6088 [2020-09-24 20:45:39,132 INFO L226 Difference]: Without dead ends: 4072 [2020-09-24 20:45:39,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2020-09-24 20:45:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 4070. [2020-09-24 20:45:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4070 states. [2020-09-24 20:45:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 4971 transitions. [2020-09-24 20:45:39,315 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 4971 transitions. Word has length 409 [2020-09-24 20:45:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:39,318 INFO L479 AbstractCegarLoop]: Abstraction has 4070 states and 4971 transitions. [2020-09-24 20:45:39,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 4971 transitions. [2020-09-24 20:45:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-09-24 20:45:39,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:39,336 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] [2020-09-24 20:45:39,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:45:39,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:39,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1818192453, now seen corresponding path program 1 times [2020-09-24 20:45:39,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:39,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968528843] [2020-09-24 20:45:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:44,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:44,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-09-24 20:45:44,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:45:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 20:45:44,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-09-24 20:45:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 20:45:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:44,840 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-24 20:45:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:44,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:44,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:45:44,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:44,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 20:45:44,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:45:45,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968528843] [2020-09-24 20:45:45,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:45,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:45,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27213427] [2020-09-24 20:45:45,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:45,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:45,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:45,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:45,137 INFO L87 Difference]: Start difference. First operand 4070 states and 4971 transitions. Second operand 5 states.