/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_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:45:21,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:45:21,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:45:21,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:45:21,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:45:21,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:45:21,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:45:21,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:45:21,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:45:21,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:45:21,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:45:21,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:45:21,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:45:21,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:45:21,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:45:21,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:45:21,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:45:21,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:45:21,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:45:21,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:45:21,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:45:21,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:45:21,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:45:21,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:45:21,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:45:21,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:45:21,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:45:21,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:45:21,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:45:21,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:45:21,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:45:21,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:45:21,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:45:21,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:45:21,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:45:21,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:45:21,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:45:21,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:45:21,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:45:21,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:45:21,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:45:21,494 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 20:45:21,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:45:21,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:45:21,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:45:21,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:45:21,532 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:45:21,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:45:21,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:45:21,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:45:21,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:45:21,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:45:21,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:45:21,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:45:21,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:45:21,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:45:21,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:45:21,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:45:21,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:45:21,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:45:21,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:45:21,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:45:21,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:45:21,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:45:21,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:45:21,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:45:21,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:45:21,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:45:21,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:45:21,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:45:21,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:45:21,537 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 20:45:22,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:45:22,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:45:22,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:45:22,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:45:22,076 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:45:22,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-24 20:45:22,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/754c7d370/c3f307fca7ca4460b0321a8cd2f38f7f/FLAGb8613cf2f [2020-09-24 20:45:22,854 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:45:22,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-24 20:45:22,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/754c7d370/c3f307fca7ca4460b0321a8cd2f38f7f/FLAGb8613cf2f [2020-09-24 20:45:23,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/754c7d370/c3f307fca7ca4460b0321a8cd2f38f7f [2020-09-24 20:45:23,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:45:23,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:45:23,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:45:23,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:45:23,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:45:23,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:23" (1/1) ... [2020-09-24 20:45:23,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41357e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:23, skipping insertion in model container [2020-09-24 20:45:23,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:23" (1/1) ... [2020-09-24 20:45:23,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:45:23,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:45:23,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:45:23,827 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:45:24,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:45:24,291 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:45:24,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24 WrapperNode [2020-09-24 20:45:24,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:45:24,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:45:24,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:45:24,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:45:24,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (1/1) ... [2020-09-24 20:45:24,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (1/1) ... [2020-09-24 20:45:24,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (1/1) ... [2020-09-24 20:45:24,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (1/1) ... [2020-09-24 20:45:24,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (1/1) ... [2020-09-24 20:45:24,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (1/1) ... [2020-09-24 20:45:24,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (1/1) ... [2020-09-24 20:45:24,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:45:24,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:45:24,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:45:24,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:45:24,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (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 20:45:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:45:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:45:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:45:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:45:24,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:45:24,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:45:24,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:45:24,520 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 20:45:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:45:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:45:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 20:45:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 20:45:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 20:45:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 20:45:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 20:45:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 20:45:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:45:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:45:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:45:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:45:26,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:45:26,215 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:45:26,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:26 BoogieIcfgContainer [2020-09-24 20:45:26,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:45:26,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:45:26,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:45:26,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:45:26,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:45:23" (1/3) ... [2020-09-24 20:45:26,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f924a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:26, skipping insertion in model container [2020-09-24 20:45:26,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:24" (2/3) ... [2020-09-24 20:45:26,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f924a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:26, skipping insertion in model container [2020-09-24 20:45:26,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:26" (3/3) ... [2020-09-24 20:45:26,238 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-24 20:45:26,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:45:26,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:45:26,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:45:26,330 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:45:26,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:45:26,331 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:45:26,331 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:45:26,331 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:45:26,331 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:45:26,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:45:26,332 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:45:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states. [2020-09-24 20:45:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-24 20:45:26,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:26,419 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] [2020-09-24 20:45:26,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:26,428 INFO L82 PathProgramCache]: Analyzing trace with hash 752602954, now seen corresponding path program 1 times [2020-09-24 20:45:26,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:26,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474788260] [2020-09-24 20:45:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:27,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:32,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-09-24 20:45:32,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:45:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 20:45:32,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-24 20:45:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 20:45:32,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:45:33,012 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-24 20:45:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:33,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:33,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:45:33,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:45:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:33,834 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 20:45:33,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474788260] [2020-09-24 20:45:33,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:33,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:33,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665698312] [2020-09-24 20:45:33,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:33,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:33,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:33,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:33,871 INFO L87 Difference]: Start difference. First operand 912 states. Second operand 5 states. [2020-09-24 20:45:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:40,377 INFO L93 Difference]: Finished difference Result 2316 states and 3042 transitions. [2020-09-24 20:45:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:45:40,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-09-24 20:45:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:40,422 INFO L225 Difference]: With dead ends: 2316 [2020-09-24 20:45:40,422 INFO L226 Difference]: Without dead ends: 1411 [2020-09-24 20:45:40,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-09-24 20:45:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1409. [2020-09-24 20:45:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2020-09-24 20:45:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1706 transitions. [2020-09-24 20:45:40,633 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1706 transitions. Word has length 460 [2020-09-24 20:45:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:40,635 INFO L479 AbstractCegarLoop]: Abstraction has 1409 states and 1706 transitions. [2020-09-24 20:45:40,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1706 transitions. [2020-09-24 20:45:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-09-24 20:45:40,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:40,651 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] [2020-09-24 20:45:40,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:45:40,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:40,653 INFO L82 PathProgramCache]: Analyzing trace with hash 936467372, now seen corresponding path program 1 times [2020-09-24 20:45:40,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:40,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854731162] [2020-09-24 20:45:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:40,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:41,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:42,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:45,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-09-24 20:45:45,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:45:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 20:45:45,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-24 20:45:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 20:45:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:46,231 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-24 20:45:46,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:45:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 20:45:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:46,762 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 20:45:46,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854731162] [2020-09-24 20:45:46,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:46,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:46,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283807455] [2020-09-24 20:45:46,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:46,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:46,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:46,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:46,770 INFO L87 Difference]: Start difference. First operand 1409 states and 1706 transitions. Second operand 5 states. [2020-09-24 20:45:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:52,018 INFO L93 Difference]: Finished difference Result 3690 states and 4510 transitions. [2020-09-24 20:45:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:45:52,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 461 [2020-09-24 20:45:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:52,034 INFO L225 Difference]: With dead ends: 3690 [2020-09-24 20:45:52,034 INFO L226 Difference]: Without dead ends: 2522 [2020-09-24 20:45:52,037 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 [2020-09-24 20:45:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2020-09-24 20:45:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2520. [2020-09-24 20:45:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2520 states. [2020-09-24 20:45:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3056 transitions. [2020-09-24 20:45:52,142 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3056 transitions. Word has length 461 [2020-09-24 20:45:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:52,143 INFO L479 AbstractCegarLoop]: Abstraction has 2520 states and 3056 transitions. [2020-09-24 20:45:52,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3056 transitions. [2020-09-24 20:45:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-09-24 20:45:52,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:52,152 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] [2020-09-24 20:45:52,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:45:52,152 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash -653502158, now seen corresponding path program 1 times [2020-09-24 20:45:52,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:52,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103569458] [2020-09-24 20:45:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-09-24 20:45:57,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:45:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-24 20:45:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-24 20:45:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 20:45:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:57,772 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-24 20:45:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:57,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:57,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:45:57,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 20:45:57,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:58,211 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 20:45:58,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103569458] [2020-09-24 20:45:58,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:58,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:58,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034489410] [2020-09-24 20:45:58,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:58,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:58,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:58,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:58,218 INFO L87 Difference]: Start difference. First operand 2520 states and 3056 transitions. Second operand 5 states. [2020-09-24 20:46:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:46:02,588 INFO L93 Difference]: Finished difference Result 6966 states and 8486 transitions. [2020-09-24 20:46:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:46:02,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 462 [2020-09-24 20:46:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:46:02,609 INFO L225 Difference]: With dead ends: 6966 [2020-09-24 20:46:02,609 INFO L226 Difference]: Without dead ends: 4668 [2020-09-24 20:46:02,615 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 20:46:02,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2020-09-24 20:46:02,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 4666. [2020-09-24 20:46:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4666 states. [2020-09-24 20:46:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 5642 transitions. [2020-09-24 20:46:02,780 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 5642 transitions. Word has length 462 [2020-09-24 20:46:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:46:02,781 INFO L479 AbstractCegarLoop]: Abstraction has 4666 states and 5642 transitions. [2020-09-24 20:46:02,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:46:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 5642 transitions. [2020-09-24 20:46:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-09-24 20:46:02,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:46:02,793 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] [2020-09-24 20:46:02,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:46:02,794 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:46:02,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:46:02,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2109296704, now seen corresponding path program 1 times [2020-09-24 20:46:02,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:46:02,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135243147] [2020-09-24 20:46:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:46:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:46:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:07,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:46:07,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-09-24 20:46:07,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:46:07,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:46:07,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:46:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:46:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-24 20:46:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 20:46:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:46:08,301 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-24 20:46:08,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:46:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:46:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:08,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:46:08,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:46:08,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:46:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 20:46:08,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:46:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:46:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:46:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:46:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:46:08,600 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 20:46:08,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135243147] [2020-09-24 20:46:08,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:46:08,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:46:08,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017789258] [2020-09-24 20:46:08,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:46:08,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:46:08,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:46:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:46:08,604 INFO L87 Difference]: Start difference. First operand 4666 states and 5642 transitions. Second operand 5 states.